Solid wire automatic butt joint device and butt joint method

Abstract

The application discloses a solid welding wire automatic butt joint device and butt joint method, which comprises a base; a welding wire calibration device comprises a calibration base; the calibration base is provided with a calibration groove penetrating through the calibration base and used for forming a welding wire butt joint position; a first camera opposite to the calibration groove is connected to a first side of the calibration base, and the first camera can upload a welding wire image to a controller in real time; a laser head for emitting a laser beam towards a center of the calibration groove is connected to a second side of the calibration base, and the center of the calibration groove forms a laser welding center; the automatic alignment device comprises a driving position three-axis moving platform and a driven position three-axis moving platform which are symmetrically connected to two sides of the calibration base; and the controller controls the driving position three-axis moving platform and the driven position three-axis moving platform to relatively move along an X axis, a Y axis and a Z axis of the base according to image information, so that a welding head of the welding wire moves to the calibration groove to focus on the laser welding center and realize alignment of end portions of the welding heads of the two welding wires.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding wire butt joint, and particularly relates to a solid welding wire automatic butt joint device and butt joint method. BACKGROUND

[0002] The diameter of welding wire becomes smaller in the actual drawing production process. Because the large shaft does not affect the speed of continuous production, the welding wire is wound on a large shaft after continuous up and down drawing. Because the welding wire is wound on a large shaft, the volume, height and weight are large, so that the subsequent manual carrying is difficult, and the welding wire wound on the large shaft is only preliminarily arranged. In order to realize standardized production, the welding wire wound on the large shaft needs to be further finely divided and wound on multiple small shafts in parallel.

[0003] However, there are problems in this process. For example, if a 20kg welding wire coil is required to be wound on each small shaft, the welding wire coil on the last small shaft will be less than 20kg in weight. Therefore, in order to finely divide each welding wire coil to 20kg to meet the factory requirements, the welding wire of the next large shaft needs to be butt jointed with the welding wire of the welding wire coil on the small shaft to make up the weight to 20kg. However, in the traditional welding wire butt joint process, manual alignment is usually used. The commonly used welding wire diameter is 0.8mm, so the welding wire diameter size is very small, which makes it difficult to observe the subtle changes with the naked eye. Therefore, it is very difficult to manually align the welding wire. If the welding wire cannot be butt jointed in place, precise winding cannot be achieved.

[0004] Moreover, there is also a welding wire butt joint device in the prior art, but the existing welding wire butt joint device will still exist during use. The clamps clamping the welding wires are manually pushed to align, which leads to alignment deviation of the two welding wires during butt joint. Secondly, the existing welding wire butt joint device usually adopts the method of passing the welding wires on both sides into electrodes, and then using a butt welding machine and a grinding machine to process respectively. Specifically, first, the welding wires on both sides are passed into electrodes. In order to form a current passing between the welding wires on both sides, the welding wire ends of the welding wires on both sides need to be manually extruded before welding. The first problem is that manual alignment does not achieve accurate alignment, but only approximate alignment, which leads to deviation of the butt joint of the welding wires. The second problem is that the welding wire ends of the welding wires on both sides need to be extruded, and then the extrusion position is welded by a welding machine, which leads to the formation of a large bump-shaped welding nodule at the welding joint position of the welding wires. Moreover, the welding wire ends will melt quickly after the welding wires are electrified, and the two welding wires are not accurately aligned but only approximately aligned, which leads to the formation of a large bump at the welding joint position of the welding wires during welding. The traditional method of using a butt welding machine is actually to compensate for the inaccurate alignment. The butt welding machine is used to establish a connection between the two welding wires, and the large bump-shaped welding nodule formed during the connection process is polished by an additional grinding machine. Therefore, the existing welding wire butt joint device not only needs to use a butt welding machine to compensate for the inaccurate alignment, but also needs to increase a grinding machine to eliminate the large bump and polish the welding joint position of the welding wire to make the diameter of the welding joint position the same as that of the welding wires on both sides. If the diameter of the welding wire is very small, for example, when the welding wires of 0.8 mm are butt jointed, the grinding machine needs to polish the position of the large bump to a diameter of 0.8 mm. During the polishing process, the welding wire joint position needs to be manually held and rotated along the polishing cutter, which leads to a decrease in the polishing accuracy of the welding wire and further affects the welding accuracy of the welding joint position of the welding wire. Moreover, after welding and polishing, the welding joint position of the welding wire is prone to cracking, and the metal dust and particles generated by polishing are easily left at the welding wire end. During subsequent welding of the welding wire, these non-metallic impurities will be brought into the molten pool to form slag. At the same time, the dust may absorb moisture or oil stains, which may produce gas during welding to form pores, seriously reducing the density and mechanical properties of the weld, and is a potential crack source. Therefore, the welding wire butt joint device in the prior art not only increases the structural complexity of the device, but also further reduces the welding efficiency and welding quality of the welding wire. SUMMARY

[0005] This application provides an automatic welding wire butt welding device and method to solve the above-mentioned technical problem that in the welding wire butt welding device, in order to facilitate the smooth energization between the welding wires, the ends of the welding wires need to be squeezed before welding with a welding machine. This not only leads to the appearance of large lumps of welding nodules at the joint of the welding wires, but also requires additional grinding equipment for grinding. This not only increases the structural complexity, but also further reduces the welding efficiency and welding quality of the welding wires.

[0006] The technical solution adopted in this application is as follows:

[0007] An automatic solid welding wire docking device includes:

[0008] Base;

[0009] A welding wire calibration device includes a calibration base; the calibration base has a calibration groove extending through the calibration base for forming a welding wire mating position; a first camera facing the calibration groove is connected to a first side of the calibration base, the first camera being able to upload welding wire images to a controller in real time; a laser head emitting a laser beam toward the center of the calibration groove to achieve welding wire mating is connected to a second side of the calibration base, the center of the calibration groove forming a laser welding center;

[0010] The automatic alignment device includes an active three-axis moving platform and a driven three-axis moving platform symmetrically connected to both sides of the calibration base. The controller controls the active and driven three-axis moving platforms to move relative to each other along the X, Y, and Z axes of the base according to the image information, so that the welding head of the welding wire moves to the focusing laser welding center in the calibration groove to align the welding head ends of the two welding wires.

[0011] The welding wire calibration device is provided, the calibration groove is arranged in the calibration base, the calibration groove can be used as a welding wire butt joint position to align the welding joints of two welding wires in the welding wire butt joint position to complete butt joint, the first side of the calibration base is connected with the first camera, the image information of the welding wire can be captured in real time and uploaded to the controller, the position of the welding wire in the welding wire butt joint position and the deviation from the laser welding center are obtained by processing and analyzing the image of the welding wire through the controller, and the driving position three-axis moving platform and the driven position three-axis moving platform of the automatic alignment device are controlled to move along the X-axis, Y-axis and Z-axis directions. The image information of the welding wire of the driving position three-axis moving platform and the driven position three-axis moving platform captured by the first camera is uploaded to the controller, the position and deviation of the welding wire are analyzed and judged according to the image information, and the position of the welding wire is automatically adjusted by controlling the driving position three-axis moving platform and the driven position three-axis moving platform. In actual application, the driven position three-axis moving platform can be used as a reference and no longer be moved after the welding wire is adjusted to the focus laser welding center in the calibration groove, and the driving position three-axis moving platform is used to actively focus the welding joint of the welding wire of the driven position three-axis moving platform, so that the welding wires on both sides are focused on the laser welding center and aligned with the welding joint end of the welding wire of the driven position three-axis moving platform, thereby realizing the rapid, automatic and accurate alignment of the welding wire.

[0012] Compared with the traditional manual adjustment of the distance between the welding wires, the application can reduce the precision error caused by manual adjustment, avoid the increase of labor, the extension of processing period and the decline of production efficiency caused by manual alignment, further improve the automation degree and positioning accuracy, thereby reducing the labor intensity and improving the production efficiency and product quality control. Furthermore, the traditional alignment method is to first manually align, then pass electricity through the welding wires on both sides, and in order to realize the electricity passing between the welding wires on both sides so as to facilitate the subsequent welding of the welding joints of the two welding wires by the butt welding machine, the welding joint ends of the welding wires on both sides need to be extruded to each other, which leads to the following problems. First, the two welding wires are not precisely aligned during the manual alignment, but only roughly aligned, and then the butt welding machine establishes a connection between the two roughly aligned welding wires. In order to realize the electricity passing between the welding wires on both sides, the welding joint ends of the welding wires need to be extruded to each other, and then a large bump shape is formed after welding by the butt welding machine. In order to eliminate the existence of the large bump, an additional device, i.e. a grinder, is needed to further trim by the grinder. Therefore, the welding is not pure welding, but further alignment is completed, which is to compensate for the initial inaccurate alignment by welding, so that the two welding wires are first connected in a welding manner, and then the welding nodule of the welding wire in the form of a large bump needs to be polished by the additional polishing device. Since the electricity passing between the welding wires on both sides is needed to facilitate the welding, the welding wires on both sides are extruded, so that a large bump, i.e. a large welding nodule, is naturally formed during the welding process, and then the position where the connection is first established is polished by the grinder to realize the radial end flat alignment of the two welding wires. In the application, manual rough alignment and the method of first connecting and then polishing by the butt welding machine are not needed, which can reduce the error of manual alignment and the use of the butt welding machine and the grinder, and after realizing the high-precision alignment, the laser beam focuses on the joint position of the welding wires on both sides, without the need to pass current through the welding wires on both sides. Only the welding joint ends of the welding wires on both sides are melted by the laser beam, and then the welding butt joint is performed. During the welding process, no large bump is formed, so there is no need to use the additional grinder for reprocessing and polishing, thereby further shortening the processing period and improving the butt joint precision and product quality.

[0013] Moreover, the traditional welded and polished joint position is prone to cracking, and the metal dust and particles generated by polishing are extremely easy to remain on the end of the welding wire. During welding, these non-metallic impurities will be brought into the molten pool, forming slag. At the same time, the dust may absorb moisture or oil stains, causing gas to be produced during welding, forming pores, and seriously reducing the density and mechanical properties (such as strength and toughness) of the weld, which is a potential crack source. The present application does not need to use a polisher, and the welding wire automatically completes high-precision alignment in the welding wire calibration device. On the basis of alignment, rapid welding is realized, and there is no deviation between the welding wires, which will not form excess melting and will not cause large nodules to appear. Therefore, not only the precision and quality of the butt joint are improved, but the use of additional equipment is also further reduced.

[0014] As a preferred embodiment, the active three-axis moving platform comprises a bottom platform, a first linear motor, a middle platform, a second linear motor, a top platform and a lifting mechanism; the bottom platform is connected with the first linear motor in the X-axis direction, used to push the bottom platform to move along the X-axis direction of the base; the middle platform is slidingly connected above the bottom platform, and the middle platform is connected with the second linear motor in the Y-axis direction, used to drive the middle platform to move along the Y-axis direction of the bottom platform; the top platform is slidingly connected above the middle platform, and the middle platform is further connected with the lifting mechanism on one side, used to drive the top platform to make lifting movement along the Z-axis relative to the middle platform.

[0015] The bottom platform of the active three-axis moving platform can move along the X-axis direction of the base, so that the welding wire can move along the X-axis direction to focus on the laser welding center in the calibration groove; the middle platform can move along the Y-axis direction of the bottom platform, so that the welding wire can move along the Y-axis direction to focus on the laser welding center in the calibration groove; the top platform is slidingly connected above the middle platform, so that the welding wire can move along the Z-axis direction to focus on the laser welding center in the calibration groove. After the six-axis robot clamps and transports the welding wire to the active three-axis moving platform, the welding wire can be accurately moved to the calibration groove to align the laser welding center by setting the active three-axis moving platform, which facilitates the accurate alignment of the welding wire in the calibration groove between the active three-axis moving platform and the driven three-axis moving platform.

[0016] As a preferred embodiment, the active three-axis moving platform is connected with a first clamping device; the first clamping device comprises a first finger air cylinder and a first clamp; the first finger air cylinder has a first sliding block and a second sliding block that move relative to each other; the first clamp comprises a first clamping jaw and a second clamping jaw; the first sliding block is connected with the first clamping jaw, and the second sliding block is connected with the second clamping jaw; the first clamping jaw and the second clamping jaw can move relative to each other to tightly hold welding wires of different diameters.

[0017] The first clamping device is arranged on the active three-axis moving platform, the first clamping device is provided with the first clamping claw and the second clamping claw that move relatively, the first clamping claw and the second clamping claw are similar to the structure of fingers and can realize cross movement, so that different diameter welding wires can be clamped, the circumferential close clamping of different diameter welding wires can be realized, the welding wires can be stably butt-jointed, the welding wires are prevented from being excessively clamped to cause the welding wires to be inclined, and the efficiency and accuracy of the welding wire butt joint are further improved.

[0018] As a preferred embodiment, the driven three-axis moving platform comprises a bottom platform, a linear motor one, a middle platform, a linear motor two, a top platform and a lifting assembly; the bottom platform is connected with the linear motor one in the X-axis direction, and is used for pushing the bottom platform to move along the X-axis direction of the base; the middle platform is slidingly connected above the bottom platform, the middle platform is connected with the linear motor two in the Y-axis direction, and is used for driving the middle platform to move along the Y-axis direction of the bottom platform; the top platform is slidingly connected above the middle platform, and the middle platform is further connected with the lifting assembly on one side, and is used for driving the top platform to make lifting movement along the Z-axis relative to the middle platform.

[0019] In actual use, the driven three-axis moving platform and the active three-axis moving platform have the same structure, after the welding wire of the driven three-axis moving platform is focused on the laser welding center, the driven three-axis moving platform can be used as a reference and no longer be moved, the active three-axis moving platform is moved, so that the welding wire of the active three-axis moving platform is actively focused on the welding wire of the driven three-axis moving platform; or after the welding wire of the active three-axis moving platform is focused on the laser welding center, the active three-axis moving platform can be used as a reference and no longer be moved, the driven three-axis moving platform is moved, so that the welding wire of the driven three-axis moving platform is actively focused on the welding wire of the active three-axis moving platform; or the active three-axis moving platform and the driven three-axis moving platform are respectively focused on the laser welding center and then fine-tuned, which is specifically determined according to actual needs and is not limited.

[0020] The driven three-axis moving platform and the active three-axis moving platform are arranged, so that automatic alignment and accurate positioning of two welding wires can be realized, the first camera of the calibration base is used to upload images of the welding wires on the active three-axis moving platform and the driven three-axis moving platform in real time, the controller judges the positions of the welding wires according to the image information, so as to control the active three-axis moving platform and the driven three-axis moving platform to move freely along the X-axis, the Y-axis and the Z-axis, so that the two welding wires are accurately focused on the laser welding center and accurately aligned.

[0021] As a preferred implementation manner, the driven three-axis moving platform is connected with a second clamping device; the second clamping device comprises a second finger air cylinder and a second clamp; the second finger air cylinder has a first slider and a second slider that move relative to each other; the first clamp comprises a first clamping jaw and a second clamping jaw; the first slider is connected with the first clamping jaw, and the second slider is connected with the second clamping jaw; the first clamping jaw and the second clamping jaw can move relative to each other to tightly hold welding wires of different diameters.

[0022] The second clamping device is arranged on the driven three-axis moving platform, the first clamping jaw and the second clamping jaw in the second clamping device move relative to each other, the first clamping jaw and the second clamping jaw are similar to fingers in shape, and the first clamping jaw and the second clamping jaw can move relative to each other to tightly hold welding wires of different diameters in a circumferential direction, which can effectively hold the welding wires to prevent the welding wires from moving away, effectively control the moving positions of the welding wires, avoid over-tightening of the welding wires to cause the welding wires to bend or skew, and further ensure subsequent high-precision alignment, thereby further improving production efficiency and product quality.

[0023] As a preferred implementation manner, the first side of the calibration base is provided with a first mounting hole, a second mounting hole and a third mounting hole that communicate with the calibration groove; the first mounting hole is arranged with a first camera, the second mounting hole is arranged with a first illuminating lamp, and the third mounting hole is arranged with a second camera.

[0024] The first side of the calibration base is provided with the first mounting hole, the second mounting hole and the third mounting hole for respectively mounting the first camera, the first illuminating lamp and the second camera; the first camera and the second camera are respectively used for shooting images of the welding wires on both sides and uploading image information to a controller in real time, so that the controller can judge the positions of the welding wires according to the image information and control the driven three-axis moving platform and the driven three-axis moving platform to move the welding wires, thereby focusing the laser welding center; the first illuminating lamp provides a light source for shooting of the first camera and the second camera, and is beneficial to shooting of high-definition image information.

[0025] As a preferred implementation manner, the first mounting hole, the second mounting hole and the third mounting hole are distributed in a radial manner around the calibration groove, the first mounting hole is arranged above the second mounting hole, and the second mounting hole is arranged above the third mounting hole.

[0026] The first mounting hole, the second mounting hole and the third mounting hole are radially distributed along one side of the length direction of the calibration base with the calibration groove as the center, and the axis direction of the first mounting hole, the second mounting hole and the third mounting hole can extend to the center of the calibration groove, that is, the laser welding center; so that the shooting focal point of the first camera in the first mounting hole is directly opposite the center of the calibration groove, that is, the laser welding center; the irradiation position of the first illuminating lamp in the second mounting hole is directly opposite the center of the calibration groove, and the shooting focal point of the second camera in the third mounting hole is directly opposite the center of the calibration groove, that is, the laser welding center; the first camera and the second camera are respectively arranged in the obliquely upper side and the obliquely lower side of the welding wire, and can clearly capture the light formed by the laser stripe on the welding wire on both sides, so as to shoot the high-definition image information in real time, can shoot the image information of the welding wire from all directions in the upper and lower directions, which is beneficial to the controller to accurately analyze the position of the welding wire and measure the deviation of the welding wire, so as to control the accurate movement of the active three-axis moving platform and the driven three-axis moving platform.

[0027] As a preferred embodiment, the second side of the calibration base is further provided with a first connecting hole, a second connecting hole and a third connecting hole communicated with the calibration groove; a second illuminating lamp is installed in the first connecting hole, a laser head is installed in the second connecting hole, and a third illuminating lamp is connected in the third connecting hole.

[0028] The second side of the calibration base is arranged opposite to the first side, and the second side of the calibration base is provided with the first connecting hole, the second connecting hole and the third connecting hole, which are respectively used for installing the second illuminating lamp, the laser head and the third illuminating lamp. The laser head is arranged on the second side, which is used for being separated from the first camera and the second camera on the first side. If the first camera, the second camera and the laser head are arranged on the same side, the lens will be directly opposite the extremely strong laser, which will cause the laser line area in the camera picture to be seriously overexposed and become a white bright spot without details, so that the butt joint position of the welding wire cannot be observed, and the welding seam groove and the working surface condition of the butt joint of the welding wire on both sides cannot be clearly observed. Therefore, the laser head and the first camera and the second camera are separated on the two sides of the calibration base, avoiding the strong direct laser, and forming a clear view without interference and overexposure in the calibration groove.

[0029] As a preferred embodiment, the first connecting hole, the second connecting hole and the third connecting hole are radially distributed with the calibration groove as the center, the first connecting hole is arranged above the second connecting hole, and the third connecting hole is arranged below the second connecting hole.

[0030] The first connecting hole is arranged above the second connecting hole, that is, the second illuminating lamp is arranged above the laser head, the third connecting hole is arranged below the second connecting hole, that is, the third illuminating lamp is arranged below the laser head, the first connecting hole, the second connecting hole and the third connecting hole are distributed radially around the calibration groove, so that the axes of the first connecting hole, the second connecting hole and the third connecting hole extend to the center of the calibration groove, so that the second illuminating lamp, the laser head and the third illuminating lamp can irradiate to the center of the calibration groove from the oblique upper side and the oblique lower side of the laser head on the second side, the first illuminating lamp on the first side irradiates from the middle to the calibration groove, thereby forming three orientation irradiations of upper, middle and lower, forming omnidirectional irradiation of the welding wires on both sides, which is more conducive to omnidirectional shooting of the welding wires on both sides by the first camera and the second camera, so that the collected image data is more accurate.

[0031] The application also relates to a solid welding wire automatic butt joint method based on the above-mentioned solid welding wire automatic butt joint device, and specific steps include:

[0032] S1: one welding wire is clamped to the driving three-axis moving platform by the six-axis robot, and then another welding wire is clamped to the driven three-axis moving platform;

[0033] S2: the first camera is started, and the first camera is used for shooting the welding wire in the calibration groove;

[0034] S3: the driven three-axis moving platform is moved towards the welding wire calibration device by the controller, the welding wire image shot by the first camera is uploaded to the controller in real time, the controller judges the position deviation of the welding wire relative to the laser welding center according to the image information, and the driven three-axis moving platform is moved to move the welding head of the welding wire to the position of the focusing laser welding center in the calibration groove;

[0035] S4: the driving three-axis moving platform is moved towards the welding wire calibration device by the controller, and the driving three-axis moving platform is moved relative to the driven three-axis moving platform along the X-axis, Y-axis and Z-axis directions to make the welding head of the welding wire of the driving three-axis moving platform correspond to the welding head of the driven three-axis moving platform, so that the welding head ends of the two welding wires are aligned.

[0036] The welding wire automatic butt joint method of the present application is realized based on the welding wire automatic butt joint device of the present application. First, the clamping of welding wires with different diameters is realized through the driving three-axis moving platform and the driven three-axis moving platform, which can realize the initial positioning of the welding wire, avoid the problem that the welding wire cannot be clamped closely in the ordinary clamping mechanism, and cannot be effectively and closely clamped for welding wires with different diameters. The present application can wrap the welding wires with different diameters, without damaging the surface of the welding wire and causing the welding wire to bend, and can realize the free and accurate movement of the welding wire along the X-axis, Y-axis and Z-axis directions following the driving three-axis moving platform and the driven three-axis moving platform. Through the laser welding center of the calibration slot of the alignment welding wire calibration device, the accurate positioning reference of the welding wire butt joint position is realized, and through the first camera and the second camera, the welding wires on both sides can be shot in all directions in the upper and lower regions, and uploaded to the controller in real time, realizing the accurate measurement and accurate judgment of the position of the welding wires on both sides by the controller. The controller controls the driving three-axis moving platform and the driven three-axis moving platform to realize the focusing of the welding wires on both sides on the laser welding center of the calibration slot, thereby realizing the automatic alignment of the welding wires on both sides, without the need to use the power supply of the welding wires on both sides, and without the need to cause the welding wire end to be squeezed by the power supply of the welding wires to form large nodules during the welding process of the welding wire, and without the need to use a grinder to polish the nodules. The present application can realize the automatic alignment of the welding wires, and can realize the welding of the welding wires by a welding machine to form a butt joint welding wire with the same diameter. Without the need to use a grinder to polish the welding position, the welding wires can be directly welded after accurate alignment.

[0037] Due to the adoption of the above technical solutions, the present application has the following beneficial effects:

[0038] The welding wire calibration device is used for precise alignment of the welding wire in the welding wire calibration device. The automatic alignment device is used for precise alignment of the welding wire in the welding wire calibration device. The welding wire calibration device comprises a calibration base. The automatic alignment device comprises a driving three-axis moving platform and a driven three-axis moving platform symmetrically connected to two sides of the calibration base. The calibration base has a calibration groove penetrating the calibration base for forming a welding wire butt joint position. The calibration groove can be used as the welding wire butt joint position to realize alignment of the welding joint of two welding wires in the welding wire butt joint position to complete butt joint. The first side of the calibration base is connected with a first camera opposite to the calibration groove. The first camera can upload the welding wire image to the controller in real time. The second side of the calibration base is connected with a laser head emitting a laser beam towards the calibration groove. The center of the calibration groove can correspond to the laser beam to form a laser welding center for focusing the welding wire. The controller processes, analyzes and judges the position of the welding wire and the deviation between the position of the laser welding center to control the driving three-axis moving platform and the driven three-axis moving platform of the automatic alignment device to move along the X-axis, Y-axis and Z-axis directions. The image information of the welding wire of the driving three-axis moving platform and the driven three-axis moving platform captured by the first camera is uploaded to the controller. The controller analyzes and judges the position and deviation of the welding wire according to the image information. The position of the welding wire is automatically adjusted by controlling the driving three-axis moving platform and the driven three-axis moving platform. In actual application, the driven three-axis moving platform can be used as a reference and no longer be moved after the welding wire is adjusted to the calibration groove and focused on the laser welding center. The driving three-axis moving platform actively focuses the welding joint of the welding wire of the driven three-axis moving platform, so that the welding wires on both sides are focused on the laser welding center and aligned with the welding joint end of the welding wire of the driven three-axis moving platform, thereby realizing rapid automatic precise alignment of the welding wire.

[0039] Compared with the traditional manual adjustment of the distance between the welding wires, the application can reduce the precision error caused by manual adjustment, avoid the increase of labor, the prolongation of processing period and the decline of production efficiency caused by manual alignment, further improve the automation degree and positioning accuracy, thereby reducing the labor intensity, improving the production efficiency and product quality control; Furthermore, the traditional alignment method is to first manually align, then pass current to the welding wires on both sides, in order to make the welding wires on both sides connect with each other, the welding head ends of the two welding wires need to be pressed against each other, and then the welding heads of the two welding wires are welded by the butt welding machine, which results in that the two welding wires are not accurately aligned during the manual alignment, but only roughly aligned, and then the welding head ends of the welding wires are pressed against each other, so that a large bump is formed after welding by the butt welding machine, and the bump needs to be further polished by a polisher. Therefore, in the traditional production method and structure layout, the welding not only completes the butt joint, but also compensates for the inaccurate alignment at the beginning, that is, the two welding wires are connected by welding, and a large bump is naturally formed during the welding process due to the pressing for current, and then the position where the two welding wires are connected is polished by the polisher to realize the flat alignment of the radial ends of the two welding wires. In the application, manual rough alignment and butt welding machine are not needed to complete the alignment by connecting first and then polishing, and the welding head end of the welding wire is melted by the laser beam, the welding wire does not need to be connected to the electrode, and the welding wire does not need to be pressed against each other, so that a large bump is not formed during the welding process of the welding wire. The application can not only reduce the error caused by manual alignment, but also reduce the use of the butt welding machine and the polisher, because the prior art actually uses the butt welding machine to further complete the alignment. In the alignment process of the application, the welding method is not needed, the welding wire is focused on the joint position by the laser beam, the welding wire does not need to be connected to the electrode, and the welding wire does not need to be pressed against each other, which not only realizes the high-precision alignment before welding, but also ensures that no large bump is formed during the welding process, so that the polisher is not needed, and the polishing process is not needed. The quality problem of the welding wire caused by polishing is avoided, thereby further shortening the processing period and improving the butt joint accuracy and product quality. BRIEF DESCRIPTION OF DRAWINGS

[0040] The drawings described herein are used to provide further understanding of the application, constitute a part of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitation on the application. In the drawings:

[0041] Figure 1 It is a front view of a solid welding wire automatic butt joint device according to an embodiment of the application.

[0042] Figure 2 is Figure 1 a cross-sectional view of A-A in the middle;

[0043] Figure 3 is a structure diagram of a driving three-axis moving platform of a solid wire automatic butt joint device according to an embodiment of the present application;

[0044] Figure 4 is a left view of a solid wire automatic butt joint device according to an embodiment of the present application;

[0045] Figure 5 is Figure 4 a cross-sectional view of B-B in the middle;

[0046] Figure 6 is a structure diagram of a first clamping device of a solid wire automatic butt joint device according to an embodiment of the present application;

[0047] in the figure,

[0048] 1, base; 2, welding wire calibration device; 21, calibration base; 3, automatic alignment device; 31, driving three-axis moving platform; 311, bottom platform; 312, middle platform; 313, top platform; 32, driven three-axis moving platform; 321, bottom layer platform; 322, middle layer platform; 323, top layer platform; 4, first clamping device; 41, first finger cylinder; 411, first sliding block; 412, second sliding block; 42, first clamp; 421, first clamping claw; 422, second clamping claw; 5, second clamping device; 51, second finger cylinder; 52, second clamp; 6, first mounting hole; 7, second mounting hole; 8, third mounting hole; 9, first camera; 10, first illuminating lamp; 11, second camera; 12, first connecting hole; 13, second connecting hole; 14, third connecting hole; 15, second illuminating lamp; 16, laser head; 17, third illuminating lamp; 18, welding wire; 19, calibration groove; C-welding wire butt joint weld position. DETAILED DESCRIPTION

[0049] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0050] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0051] In addition, in the description of the present application, it needs to be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be communicated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "embodiment", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] Embodiment 1

[0055] The present application relates to a solid wire automatic butt joint device, as shown in Figures 1-6 comprising:

[0056] a base 1;

[0057] a wire calibration device 2, comprising a calibration base 21; the calibration base 21 has a calibration groove 19 penetrating through the calibration base 21 for forming a butt joint position of the welding wire 18; a first camera 9 opposite to the calibration groove 19 is connected to a first side of the calibration base 21, and the first camera 9 can upload the image of the welding wire 18 to the controller in real time; a laser head 16 for emitting a laser beam towards the center of the calibration groove 19 to realize the butt joint of the welding wire 18 is connected to a second side of the calibration base 21; and the center of the calibration groove 19 forms a laser welding center;

[0058] The automatic alignment device 3 comprises a main three-axis mobile platform 31 and a driven three-axis mobile platform 32 symmetrically connected to both sides of the calibration base 21; the controller controls the relative movement of the main three-axis mobile platform 31 and the driven three-axis mobile platform 32 along the X-axis, Y-axis and Z-axis of the base 1 according to the image information, so that the welding heads of the two welding wires 18 are aligned at the end of the welding head of the welding wire 18 in the calibration groove 19.

[0059] The present application sets the welding wire calibration device 2, which is provided with a calibration groove 19 penetrating the calibration base 21, and the welding wire 18 butt joint position is formed in the calibration groove 19. The center of the calibration groove 19 is the focusing center of the laser beam, that is, the laser welding center, which can realize the alignment of the welding heads of the two welding wires 18 in the welding wire butt joint position to complete the butt joint, and the center of the calibration groove 19 on both sides of the welding wire is the laser welding center, which realizes the end alignment. The first camera 9 is connected to the first side of the calibration base 21, which can capture the image information of the welding wire 18 in real time and upload it to the controller. The position of the welding wire 18 and the deviation from the laser welding center are obtained by processing and analyzing the image of the welding wire 18 by the controller, so as to control the corresponding movement of the main three-axis mobile platform 31 and the driven three-axis mobile platform 32 of the automatic alignment device 3 along the X-axis, Y-axis and Z-axis. In actual application, the driven three-axis mobile platform 32 can be used as a reference after the welding wire 18 is adjusted to the focusing laser welding center in the calibration groove 19 and no longer moves, and the main three-axis mobile platform 31 actively focuses the welding head of the welding wire 18 of the driven three-axis mobile platform 32, so that the two welding wires 18 are focused on the laser welding center and aligned with the welding head end of the welding wire 18 of the driven three-axis mobile platform 32, thereby realizing the rapid automatic and accurate alignment of the welding wire 18.

[0060] Compared with the traditional manual adjustment of the distance between the welding wires 18, the application can reduce the precision error caused by manual adjustment, avoid the increase of labor, the prolongation of processing period and the decline of production efficiency caused by manual alignment, further improve the degree of automation and positioning accuracy, thereby reducing the labor intensity and improving the production efficiency and product quality control; Furthermore, the traditional alignment method is to first manually align, then pass electricity through the welding wires on both sides, and in order to realize the electricity passing between the welding wires on both sides so as to facilitate the subsequent welding of the welding joints of the two welding wires by the butt welding machine, the welding joint ends of the welding wires on both sides need to be extruded with each other, which leads to the following problems: firstly, the two welding wires are not precisely aligned in the manual alignment process, but only roughly aligned, and then the butt welding machine is used to connect the two roughly aligned welding wires, and the two welding wires 18 are not precisely aligned and need to be extruded with each other in the process of passing electricity, and after being welded by the butt welding machine, a large bump shape is formed, and in order to eliminate the existence of the large bump, an additional device, i.e. a grinder, is needed to further trim by the grinder; Therefore, in the traditional production method and structural layout, the welding not only completes the butt joint but also has the purpose of compensating for the initial inaccurate alignment by welding, that is, the two welding wires are first connected by welding, and since electricity needs to be passed between the welding wires on both sides to facilitate the completion of the welding, the welding wires on both sides are extruded, so a large bump, i.e. a large welding nodule, is naturally formed in the welding process, and then the grinder is used to grind the position where the connection is first established to realize the radial end alignment of the two welding wires. In the application, manual rough alignment and the method of first connecting and then grinding by the butt welding machine are not needed, which can not only reduce the error of manual alignment but also reduce the use of the butt welding machine and the grinder, and after high-precision alignment, the laser beam is focused, the laser beam can melt a little bit of the welding joint ends of the welding wires on both sides, and then the welding butt joint is performed, and no large bump is formed in the welding process. It should be noted that the laser beam is not emitted during the welding butt joint of the welding wires, and after the welding wires on both sides are precisely aligned with the laser welding center in the calibration groove, the laser beam is emitted and directly faces the laser welding center, which can melt a little bit of the welding joint ends of the welding wires to realize efficient and rapid welding, and no large bump is formed, so no additional grinder is needed, and no grinding treatment by the grinder is needed, thereby further shortening the processing period and improving the butt joint precision and product quality of the product. Because the joint position of the welding wire is prone to cracking after welding and grinding, the metal dust and particles generated by grinding are easily left on the welding wire end. During welding, these non-metallic impurities will be brought into the molten pool to form slag. At the same time, the dust may absorb moisture or oil stains, which may produce gas during welding to form pores, thereby seriously reducing the density and mechanical properties (such as strength and toughness) of the weld, and is a potential crack source.The application does not need to use a grinding machine, and the welding wire is automatically aligned with high precision in the welding wire calibration device. On the basis of alignment, rapid welding is realized. The deviation of the end of the welding wire does not form excess melting and does not cause the appearance of large nodules. Therefore, not only the precision and quality of the butt joint are improved, but the use of additional equipment is further reduced. Thus, the processing cycle is further shortened, and the butt joint precision and product quality of the product are improved.

[0061] More accurately, the laser welding center is the center position of the calibration groove in the width direction and the length direction. The laser welding center is formed at the center position of the calibration groove, that is, the focusing position of the two side welding wires and the focusing position of the laser beam. The two side welding wires can be aligned with the laser welding center to achieve alignment. The laser beam emitted by the laser head can be aligned with the laser welding center to melt the end of the welding head of the two side welding wires, which is convenient for subsequent welding.

[0062] As a preferred embodiment, the active three-axis moving platform 31 comprises a bottom platform 311, a first linear motor, a middle platform 312, a second linear motor, a top platform 313 and a lifting mechanism. The first linear motor is connected to the bottom platform 311 in the X-axis direction, used to push the bottom platform 311 to move along the X-axis direction of the base 1. The middle platform 312 is slidingly connected above the bottom platform 311. The second linear motor is connected to the middle platform 312 in the Y-axis direction, used to drive the middle platform 312 to move along the Y-axis direction of the bottom platform 311. The top platform 313 is slidingly connected above the middle platform 312. The middle platform 312 is further connected with the lifting mechanism on one side, used to drive the top platform 313 to make lifting movement along the Z-axis relative to the middle platform 312.

[0063] The lifting mechanism is symmetrically connected to both sides of the middle platform 312, and can realize stable upward movement of the top platform 313 relative to the middle platform 312; the lifting mechanism comprises a linear drive motor I and a first eccentric wheel connected to the same side of the middle platform 312, the first eccentric wheel is rotationally connected to the middle platform 312, and the first eccentric wheel is separated from the linear drive motor I by a preset distance, which can ensure that the linear drive motor I can drive the first eccentric wheel to rotate, the linear drive motor I is connected to one side of the middle platform 312 and its drive rod can move along a straight line, so that the movement of the drive rod of the linear drive motor I relative to the first eccentric wheel can drive the first eccentric wheel to rotate, since the top platform 313 is vertically slidingly connected to the middle platform 312, when the first eccentric wheel moves, the height of the first eccentric wheel can change to drive the top platform 313 to move up and down relative to the middle platform 312, the linear drive motor I has a scale, and the linear movement distance of the linear drive motor I has a preset relationship with the rotation angle of the first eccentric wheel, so that the rotation angle of the first eccentric wheel can be adjusted according to the adjustment of the movement distance of the linear drive motor I, and then the height of the top platform 313 relative to the middle platform 312 is adjusted, and then the height of the welding wire 18 is adjusted.

[0064] The bottom platform 311 of the active three-axis moving platform 31 of the present application can move along the X-axis direction of the base, so that the welding wire 18 can move along the X-axis direction to focus on the laser welding center in the calibration groove 19; the middle platform 312 can move along the Y-axis direction of the bottom platform 311, so that the welding wire 18 can move along the Y-axis direction to focus on the laser welding center in the calibration groove 19; the top platform 313 is slidingly connected above the middle platform 312, so that the welding wire 18 can move along the Z-axis direction to focus on the laser welding center of the calibration groove 19. After the six-axis robot clamps the welding wire 18 and transports it to the active three-axis moving platform 31, the active three-axis moving platform 31 is arranged to realize that the welding wire 18 can be accurately moved to the center position of the calibration groove 19, i.e., the laser welding center, so as to facilitate accurate alignment of the welding wire 18 in the calibration groove 19 with the passive three-axis moving platform 32 later.

[0065] As a preferred embodiment, the active three-axis moving platform 31 is connected with a first clamping device 4; the first clamping device 4 comprises a first finger air cylinder 41 and a first clamp 42; the first finger air cylinder 41 has oppositely moving first and second sliding blocks 411 and 412; the first clamp 42 comprises first and second clamping jaws 421 and 422; the first sliding block 411 is connected with the first clamping jaw 421, the second sliding block 412 is connected with the second clamping jaw 422, and the first and second clamping jaws 421 and 422 can oppositely cross to tightly hold welding wires 18 of different diameters.

[0066] The first clamping device 4 is arranged on the active three-axis moving platform 31, the first clamping device 4 is provided with the first clamping jaw 421 and the second clamping jaw 422 which move relative to each other, and the first clamping jaw 421 and the second clamping jaw 422 are similar to the structure of fingers and can realize cross movement, so that the welding wire 18 with different diameters can be clamped, the circumferential fit clamping of the welding wire 18 with different diameters can be realized, the welding wire 18 can be stably butt-jointed, and the welding wire 18 is prevented from being excessively clamped to cause the welding wire 18 to be inclined, so that the efficiency and accuracy of butt-joint of the welding wire 18 are further improved.

[0067] As a preferred embodiment, the driven three-axis moving platform 32 comprises a bottom platform 321, a linear motor one, a middle platform 322, a linear motor two, a top platform 323 and a lifting assembly; the bottom platform 321 is connected with the linear motor one in the X-axis direction, and is used for pushing the bottom platform 321 to move along the X-axis direction of the base 1; the middle platform 322 is slidingly connected above the bottom platform 321, and the middle platform 322 is connected with the linear motor two in the Y-axis direction, and is used for driving the middle platform 322 to move along the Y-axis direction of the bottom platform 321; the top platform 323 is slidingly connected above the middle platform 322, and the middle platform 322 is further connected with the lifting assembly on one side, and is used for driving the top platform 323 to make lifting motion along the Z-axis relative to the middle platform 322.

[0068] The lifting assembly is symmetrically connected to the two sides of the middle platform 322, and is used for realizing the stable lifting motion of the middle platform 322 relative to the bottom platform 321; the lifting assembly comprises the linear driving motor two and the second eccentric wheel which are connected to the same side of the middle platform 322, the second eccentric wheel is rotationally connected to the middle platform 322, the second eccentric wheel is separated from the linear driving motor two by a preset distance, the distance can ensure that the linear driving motor two can drive the second eccentric wheel to rotate, the linear driving motor two is connected to one side of the middle platform 322 and the driving rod thereof can move along a straight line, so that the movement of the driving rod of the linear driving motor two relative to the second eccentric wheel can push the second eccentric wheel to rotate, since the top platform 323 is vertically slidingly connected to the middle platform 322, when the second eccentric wheel moves, the height direction of the second eccentric wheel can change to drive the top platform 323 to move up and down relative to the middle platform 322, the linear driving motor two has a scale, and the linear movement distance thereof has a preset relationship with the rotation angle of the second eccentric wheel, so that the rotation angle of the second eccentric wheel can be adjusted according to the adjustment of the movement distance of the linear driving motor two, and then the height of the top platform 323 relative to the middle platform 322 is adjusted, and then the height of the welding wire 18 is adjusted.

[0069] In actual use, the driven three-axis mobile platform 32 has the same structure as the active three-axis mobile platform 31, and after the welding wire 18 of the driven three-axis mobile platform 32 is focused on the laser welding center, the driven three-axis mobile platform 32 can no longer move as a reference, and the active three-axis mobile platform 31 is moved so that the welding wire 18 of the active three-axis mobile platform 31 actively focuses on the welding wire 18 of the driven three-axis mobile platform 32; or after the welding wire 18 of the active three-axis mobile platform 31 is focused on the laser welding center, the active three-axis mobile platform 31 can no longer move as a reference, and the driven three-axis mobile platform 32 is moved so that the welding wire 18 of the driven three-axis mobile platform 32 actively focuses on the welding wire 18 of the active three-axis mobile platform 31; or the active three-axis mobile platform 31 and the driven three-axis mobile platform 32 are respectively focused on the laser welding center and then fine-tuned, which is specifically determined according to actual needs and is not specifically limited.

[0070] By setting the driven three-axis mobile platform 32 and the active three-axis mobile platform 31, automatic alignment and accurate positioning of the two welding wires 18 can be achieved. The first camera 9 of the calibration base 21 uploads images of the welding wires 18 on the active three-axis mobile platform 31 and the driven three-axis mobile platform 32 in real time, and the controller controls the active three-axis mobile platform 31 and the driven three-axis mobile platform 32 to move freely along the X-axis, Y-axis and Z-axis directions, so as to achieve accurate focusing of the two welding wires 18 on the laser welding center and accurate alignment between the two welding wires 18.

[0071] As a preferred embodiment, the driven three-axis mobile platform 32 is connected with a second clamping device 5; the second clamping device 5 includes a second finger air cylinder 51 and a second clamp 52; the second finger air cylinder 51 has a first slider and a second slider that move relative to each other; the first clamp 42 includes a first clamping jaw and a second clamping jaw; the first slider is connected with the first clamping jaw, and the second slider is connected with the second clamping jaw; the first clamping jaw and the second clamping jaw can move relative to each other to tightly hold welding wires 18 of different diameters.

[0072] By setting the second clamping device 5 on the driven three-axis mobile platform 32, the second clamping device 5 includes first and second clamping jaws that move relative to each other, and the first and second clamping jaws have a shape similar to fingers. The first and second clamping jaws can move relative to each other to tightly hold welding wires 18 of different diameters, which can effectively hold the welding wires 18 to prevent the welding wires 18 from moving away, thereby effectively controlling the moving position of the welding wires 18, and can also avoid excessive clamping of the welding wires 18 to cause the welding wires 18 to bend or deviate, thereby further ensuring high-precision alignment in the subsequent process and further improving production efficiency and product quality.

[0073] As a preferred embodiment, the first side of the calibration base 21 is provided with a first mounting hole 6, a second mounting hole 7 and a third mounting hole 8 which are in communication with the calibration groove 19; the first mounting hole 6 is provided with the first camera 9, the second mounting hole 7 is provided with the first illuminating lamp 10, and the third mounting hole 8 is provided with the second camera 11.

[0074] The first side of the calibration base 21 is provided with the first mounting hole 6, the second mounting hole 7 and the third mounting hole 8 which are used for mounting the first camera 9, the first illuminating lamp 10 and the second camera 11 respectively; the first camera 9 and the second camera 11 are used for shooting the images of the two sides of the welding wire 18 and uploading the image information to the controller in real time, so that the controller can determine the position of the welding wire 18 according to the image information and control the corresponding active three-axis moving platform 31 and driven three-axis moving platform 32 to move the welding wire 18, thereby realizing the focusing of the laser welding center; the first illuminating lamp 10 is provided to provide light source for the shooting of the first camera 9 and the second camera 11, which is beneficial to shooting high-definition image information.

[0075] The first camera includes a first camera body and a first protective sleeve; the first camera body is connected to the first protective sleeve in a sleeved manner, the first mounting hole is provided with an internal thread, the outer side of the first protective sleeve is provided with an external thread, and the first protective sleeve and the first mounting hole are connected through the threads, so that the first camera can move along the first mounting hole. Similarly, the first illuminating lamp and the second camera are connected to the calibration base through the same structure and threads.

[0076] As a preferred embodiment, the first mounting hole 6, the second mounting hole 7 and the third mounting hole 8 are distributed radially around the calibration groove 19, the first mounting hole 6 is arranged above the second mounting hole 7, and the second mounting hole 7 is arranged above the third mounting hole 8.

[0077] The first mounting hole 6, the second mounting hole 7 and the third mounting hole 8 are radially distributed along one side of the length direction of the calibration base 21 and centered on the calibration groove 19, and the axis direction of the first mounting hole 6, the second mounting hole 7 and the third mounting hole 8 can extend to the center of the calibration groove 19, that is, the laser welding center; so that the shooting focal point of the first camera 9 in the first mounting hole 6 is directly opposite the center of the calibration groove 19, that is, the laser welding center; the irradiation position of the first illuminating lamp 10 in the second mounting hole 7 is directly opposite the center of the calibration groove 19, that is, the laser welding center; and the shooting focal point of the second camera 11 in the third mounting hole 8 is directly opposite the center of the calibration groove 19, the first camera 9 and the second camera 11 are respectively arranged obliquely above and below the welding wire 18, and can clearly capture the light formed by the laser stripe on the welding wire 18 on both sides, so as to shoot high-definition image information in real time, and can shoot image information of the welding wire 18 from all directions from the top and bottom, which is beneficial to the controller to accurately analyze the position of the welding wire 18 and measure the deviation of the welding wire 18, so as to control the accurate movement of the active three-axis moving platform 31 and the driven three-axis moving platform 32.

[0078] As a preferred embodiment, the second side of the calibration base 21 is also provided with a first connecting hole 12, a second connecting hole 13 and a third connecting hole 14 which are in communication with the calibration groove 19; the second illuminating lamp 15 is installed in the first connecting hole 12, the laser head 16 is installed in the second connecting hole 13, and the third illuminating lamp 17 is connected in the third connecting hole 14.

[0079] The second side of the calibration base 21 is arranged opposite to the first side, and the first connecting hole 12, the second connecting hole 13 and the third connecting hole 14 are arranged on the second side of the calibration base 21, which are respectively used for installing the second illuminating lamp 15, the laser head 16 and the third illuminating lamp 17. The laser head 16 is arranged on the second side, which is used for being separated from the first camera 9 and the second camera 11 on the first side. If the first camera 9, the second camera 11 and the laser head 16 are arranged on the same side, the lens will be directly opposite the extremely strong laser, which will cause the laser line area in the camera picture to be seriously overexposed and become a white bright spot without details, so that the butt joint position of the welding wire 18 cannot be observed, and the welding seam groove and the working surface condition of the butt joint of the welding wire 18 on both sides cannot be clearly observed. Therefore, the laser head 16 and the first camera 9 and the second camera 11 are separated on the two sides of the calibration base 21, avoiding the strong direct laser, and forming a clear and non-overexposed view in the calibration groove 19.

[0080] The second illuminating lamp 15 adopts a second illuminating lamp body and a first positioning sleeve, the second illuminating lamp body is connected in the first positioning sleeve, an outer thread is arranged outside the first positioning sleeve, and an inner thread is arranged in the first connecting hole 12, so that the second illuminating lamp 15 is threadedly connected in the first connecting hole 12. Similarly, the laser head and the third illuminating lamp are threadedly connected in the calibration base in the same structure.

[0081] As a preferred embodiment, the first connecting hole 12, the second connecting hole 13 and the third connecting hole 14 are radially distributed around the calibration groove 19, the first connecting hole 12 is arranged above the second connecting hole 13, and the third connecting hole 14 is arranged below the second connecting hole 13.

[0082] The first connecting hole 12 is arranged above the second connecting hole 13, that is, the second illuminating lamp 15 is arranged above the laser head 16, the third connecting hole 14 is arranged below the second connecting hole 13, that is, the third illuminating lamp 17 is arranged below the laser head 16, and the first connecting hole 12, the second connecting hole 13 and the third connecting hole 14 are radially distributed around the calibration groove 19, so that the axes of the first connecting hole 12, the second connecting hole 13 and the third connecting hole 14 extend to the center of the calibration groove 19, so that the second illuminating lamp 15, the laser head 16 and the third illuminating lamp 17 can irradiate to the center of the calibration groove 19 from the oblique upper side and the oblique lower side of the laser head 16 on the second side, and the first illuminating lamp 10 on the first side irradiates from the middle to the calibration groove 19, thereby forming three orientation irradiations of upper, middle and lower, forming omnidirectional irradiation of the welding wires 18 on both sides, which is more conducive to omnidirectional shooting of the welding wires 18 on both sides by the first camera 9 and the second camera 11, so that the collected image data is more accurate.

[0083] Embodiment 2

[0084] The application also relates to a solid welding wire automatic butt joint method based on the above-mentioned solid welding wire automatic butt joint device, and specific steps include:

[0085] S1: One welding wire 18 is clamped to the driving three-axis moving platform 31 by the six-axis robot, and then another welding wire 18 is clamped to the driven three-axis moving platform 32;

[0086] S2: The first camera 9 is started, and the first camera 9 is used for shooting the welding wire in the calibration groove 19;

[0087] S3: The driven three-axis moving platform 32 is controlled to move towards the welding wire calibration device 2 by the controller, the welding wire 18 image shot by the first camera 9 is uploaded to the controller in real time, the controller judges the position deviation of the welding wire 18 relative to the laser welding center according to the image information, and the driven three-axis moving platform 32 is controlled to move so that the welding head of the welding wire 18 is moved to the position of the focus laser welding center in the calibration groove 19.

[0088] S4: The controller controls the active three-axis mobile platform 31 to move towards the welding wire calibration device 2, and controls the active three-axis mobile platform 31 to move along the X-axis, Y-axis and Z-axis directions relative to the driven three-axis mobile platform 32, so that the welding head of the welding wire 18 of the active three-axis mobile platform 31 corresponds to the welding head of the driven three-axis mobile platform 32, so that the welding head ends of the two welding wires 18 are aligned.

[0089] The welding wire 18 automatic butt joint method of the present application is realized based on the welding wire 18 automatic butt joint device of the present application. First, the active three-axis mobile platform 31 and the driven three-axis mobile platform 32 are respectively used to clamp welding wires 18 of different diameters, as shown in Figure 5 The active three-axis mobile platform 31 is connected with a welding wire 18, for example, a 0.8mm welding wire 18, and the driven three-axis mobile platform 32 is connected with another welding wire 18 with a diameter of 0.8mm, and the two welding wires 18 are butt jointed in the calibration groove 19, as shown in Figure 5 The letter C position shown in Figure 5 represents the welding wire 18 butt joint seam position. The active three-axis mobile platform 31 and the driven three-axis mobile platform 32 of the present application can realize the initial positioning of the welding wire 18, avoid the problem that the welding wire 18 cannot be clamped closely in the ordinary clamping mechanism, and cannot effectively and closely clamp welding wires 18 of different diameters. The present application can wrap the welding wires 18 of different diameters, without damaging the surface of the welding wire 18 or causing the welding wire 18 to bend, and can realize the free and accurate movement of the welding wire 18 along the X-axis, Y-axis and Z-axis directions following the active three-axis mobile platform and the driven three-axis mobile platform. Through the laser welding center of the calibration groove 19 of the welding wire calibration device 2, the accurate positioning reference of the butt joint position of the welding wire 18 is realized, and through the first camera 9 and the second camera 11, the welding wires 18 on both sides can be shot in all directions in the upper and lower regions, and the real-time uploading to the controller is realized. The controller can accurately measure and accurately judge the position of the welding wires 18 on both sides, and the controller controls the active three-axis mobile platform 31 and the driven three-axis mobile platform 32 to realize the focusing of the welding wires 18 on both sides on the laser welding center of the calibration groove 19, so as to realize the automatic alignment of the welding wires 18 on both sides. Then the laser head is turned on, and the laser beam emitted by the laser head is emitted to the laser welding center, so as to melt a little at the welding head end of the welding wire on both sides, which is beneficial to the next step of welding by the welding machine to form a butt joint welding wire 18 with the same diameter. Without using the traditional method of passing through the electrodes on both sides of the welding wire, in order to realize the electrical connection between the welding wires on both sides, so as to facilitate the subsequent welding of the welding heads of the two welding wires by the butt welding machine, it is necessary to press the welding head ends of the welding wires on both sides to each other, which causes large nodules of welding joints at the welding joint position. Without using the grinding machine to grind the welding nodules at the welding position, the welding is directly formed after accurate alignment.

[0090] The places not mentioned in the application can be realized by using or referring to the existing technology.

[0091] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the difference from other embodiments.

[0092] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A method of automatic butt joining of a solid welding wire, characterized in that Automatic butt joint device based on solid welding wire The automatic butt joint device based on solid welding wire comprises a base, a welding wire calibration device comprising a calibration base, the calibration base having a calibration groove for forming a welding wire butt joint position penetrating through the calibration base, a first camera being connected to a first side of the calibration base and facing the calibration groove, the first camera being capable of uploading a welding wire image to a controller in real time, a laser head being connected to a second side of the calibration base and emitting a laser beam towards the center of the calibration groove to realize welding wire butt joint, the center of the calibration groove forming a laser welding center, the first side of the calibration base being provided with a first mounting hole, a second mounting hole and a third mounting hole communicating with the calibration groove, the first mounting hole, the second mounting hole and the third mounting hole being radially distributed around the calibration groove, the first mounting hole being arranged above the second mounting hole, the second mounting hole being arranged above the third mounting hole, the first mounting hole being provided with the first camera, the second mounting hole being provided with a first illuminating lamp, and the third mounting hole being provided with a second camera, the second side of the calibration base being further provided with a first connecting hole, a second connecting hole and a third connecting hole communicating with the calibration groove, the first connecting hole, the second connecting hole and the third connecting hole being radially distributed around the calibration groove, the first connecting hole being arranged above the second connecting hole, and the third connecting hole being arranged below the second connecting hole, the first connecting hole being provided with a second illuminating lamp, the second connecting hole being provided with the laser head, and the third connecting hole being provided with a third illuminating lamp, the automatic alignment device comprising a driving position three-axis moving platform and a driven position three-axis moving platform being symmetrically connected to two sides of the calibration base, the controller controlling the driving position three-axis moving platform and the driven position three-axis moving platform to relatively move along an X-axis, a Y-axis and a Z-axis of the base according to image information, so that the welding head of the welding wire moves to the laser welding center in the calibration groove to realize alignment of the welding head ends of the two welding wires, the driving position three-axis moving platform comprising a middle platform and a lifting mechanism, the lifting mechanism comprising a linear motor one and a first eccentric wheel being connected to the same side of the middle platform, the moving distance of the linear motor one and the rotation angle of the first eccentric wheel having a preset relationship, thereby adjusting the height of the welding wire The automatic butt joint method of the solid welding wire comprises the following specific steps: S1: one welding wire is clamped to the driving position three-axis moving platform by a six-axis robot, and another welding wire is clamped to the driven position three-axis moving platform; S2: the first camera is turned on, and the first camera is used for shooting the welding wire in the calibration groove; S3: the driven position three-axis moving platform is controlled to move towards the welding wire calibration device by the controller, the welding wire image shot by the first camera is uploaded to the controller in real time, the controller judges the position deviation of the welding wire relative to the laser welding center according to the image information, and the driven position three-axis moving platform is controlled to move so that the welding head of the welding wire moves to the position of the laser welding center in the calibration groove. S4: moving the active three-axis mobile platform towards the welding wire calibration device by the controller, and moving the active three-axis mobile platform along the X-axis, Y-axis and Z-axis directions relative to the driven three-axis mobile platform by the controller, so that the welding heads of the welding wires of the active three-axis mobile platform correspond to the welding heads of the driven three-axis mobile platform, and the welding head ends of the two welding wires are aligned.

2. A method of automatic butt joining of a solid welding wire as claimed in claim 1, characterized in that The active three-axis mobile platform comprises a bottom platform, a first linear motor, a middle platform, a second linear motor, a top platform and a lifting mechanism; The bottom platform is connected with the first linear motor in the X-axis direction, used for pushing the bottom platform to move along the X-axis direction of the base; the middle platform is slidingly connected above the bottom platform, and the middle platform is connected with the second linear motor in the Y-axis direction, used for driving the middle platform to move along the Y-axis direction of the bottom platform; the top platform is slidingly connected above the middle platform, and the middle platform is further connected with the lifting mechanism on one side, used for driving the top platform to make lifting movement along the Z-axis relative to the middle platform.

3. A method of automatic butt joining of a solid welding wire as defined in claim 2, characterized in that The active three-axis mobile platform is connected with the first clamping device; The first clamping device comprises a first finger air cylinder and a first clamp; the first finger air cylinder has first and second sliding blocks that move relative to each other; the first clamp comprises first and second clamping jaws; the first sliding block is connected with the first clamping jaw, and the second sliding block is connected with the second clamping jaw; the first and second clamping jaws can move relative to each other to tightly hold welding wires of different diameters.

4. A method of automatic butt joining of a solid welding wire as defined in claim 1, characterized in that The driven three-axis mobile platform comprises a bottom platform, a linear motor one, a middle platform, a linear motor two, a top platform and a lifting assembly; The bottom platform is connected with the linear motor one in the X-axis direction, used for pushing the bottom platform to move along the X-axis direction of the base; the middle platform is slidingly connected above the bottom platform, and the middle platform is connected with the linear motor two in the Y-axis direction, used for driving the middle platform to move along the Y-axis direction of the bottom platform; the top platform is slidingly connected above the middle platform, and the middle platform is further connected with the lifting assembly on one side, used for driving the top platform to make lifting movement along the Z-axis relative to the middle platform.

5. A method of automatic butt joining of a solid welding wire as defined in claim 4, characterized in that The driven three-axis mobile platform is connected with the second clamping device; The second clamping device comprises a second finger air cylinder and a second clamp; the second finger air cylinder has first and second sliding blocks that move relative to each other; the first clamp comprises first and second clamping jaws; the first sliding block is connected with the first clamping jaw, and the second sliding block is connected with the second clamping jaw; the first and second clamping jaws can move relative to each other to tightly hold welding wires of different diameters.

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