Laser equipment for automatic butt welding of straight slits
Technical Field
The invention relates to the field of laser welding, in particular to laser equipment for straight seam automatic butt welding.
Background
In modern industrial manufacturing, the welding technology is widely applied to a plurality of fields such as machinery, aviation, automobiles, ships and the like, and particularly, straight seam butt welding is used as a common welding mode and plays an important role in processing workpieces such as pipes, plates and the like. However, the conventional welding device still has a plurality of defects in terms of automation level, welding precision, stability and adaptability, and limits the application of the conventional welding device in the field of high-precision welding.
Conventional welding equipment generally relies on manual operation, and manual intervention is required in the processes of positioning, clamping, moving and the like of workpieces. The operation mode has high requirements on the skills of operators, is easy to cause unstable welding precision due to personal errors, and has low efficiency of manual operation, difficult accurate workpiece positioning, poor welding effect and higher reworking rate especially under the condition of high-precision butt welding. In addition, the adaptability of traditional equipment to workpieces of different sizes and shapes is poor, and the workpieces are required to be frequently replaced or manually adjusted, so that the production efficiency is affected.
During welding, the fixing and stability of the workpiece directly affect the welding quality. The traditional workpiece clamping device generally adopts a simple mechanical clamp, and can not automatically adjust clamping force according to the specific size and shape of a workpiece, so that the workpiece can be loosened or stressed too much in the welding process, and the quality of a welding seam is affected. In addition, if the heat generated during the welding process is not effectively removed, the equipment may overheat, thereby affecting the welding quality and the service life of the equipment. Traditional heat dissipation measures are often simple in design and cannot fully cope with long-time high-strength welding work.
To solve these problems, there is a growing market for automated welding equipment that improves the automation of the welding process to some extent, reducing the burden on the operator. However, most of the existing automation devices still have limitations in structural design, such as insufficient multi-axis movement precision, low level of intelligence of the clamping device, limited capability of adapting to different workpiece sizes, imperfect heat dissipation system, and the like. With the rapid development of industrial automation and precision manufacturing technologies, there is an increasing market demand for high-precision, high-efficiency automated welding equipment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides laser equipment for straight joint automatic butt welding, which solves the problems of low welding precision, unstable workpiece clamping, insufficient automation level, low heat dissipation efficiency and the like of the traditional welding equipment.
In order to achieve the purpose, the invention is realized by the following technical scheme that the laser device for automatic butt welding of straight slits comprises:
the welding machine comprises a machine case, wherein a supporting table and an observation window for observing the welding operation process are arranged in the machine case, and a supporting frame for fixing and supporting is arranged at the bottom of the machine case;
The multi-axis moving mechanism is used for guiding the laser welding head to accurately move along X, Y, Z three directions;
The laser welding head is fixedly arranged on a moving seat of the multi-axis moving mechanism, can move along the multi-axis direction and is used for realizing straight seam butt welding of workpieces to be welded;
The mobile station is connected in the case in a sliding manner and can move along the X-axis direction and is used for bearing and moving the workpiece to be welded;
The fixture is installed on the mobile station for the work piece that treats the welding is stable to be centre gripping, the fixture includes:
The clamping assembly is symmetrically arranged and comprises a clamping plate I, a clamping plate II and an arc-shaped outer shell, wherein the clamping plate II is hinged with rotating plates at two ends of the arc-shaped outer shell through a rotating shaft, the clamping plate I and the clamping plate II are arranged at the inner side of the arc-shaped outer shell and used for clamping a workpiece to be welded, a soft sliding plate is arranged between the clamping plate I and the clamping plate II, one section of the soft sliding plate is fixedly connected to the clamping plate I, and the other end of the soft sliding plate is sliding in the clamping plate II;
the elastic adjusting device is arranged in the clamping assembly and comprises a first spring and a second spring, and is used for automatically adjusting the clamping force according to the shape and the size change of the workpiece;
the support assembly comprises a support rod and a sliding column, one end of the sliding column is fixed on one side of the clamping plate I, and the other end of the sliding column slides in the arc-shaped outer shell;
the output end of the hydraulic push rod is connected with the clamping assembly and is used for controlling the lifting height of the clamping assembly;
And the moving assembly is used for adjusting the interval between the clamping assemblies.
Preferably, a fan is arranged at the top of the case, and the fan is used for discharging smoke dust and heat in the welding process.
Preferably, the moving assembly comprises a double-headed motor, an outer shell body and a threaded rod, wherein the double-headed motor is meshed with the threaded rod, the surface of the threaded rod is in threaded connection with the moving block, the moving block moves along the threaded rod, the supporting rod is fixedly connected to the upper surface of the moving block, and the position of the clamping assembly is adjusted along with the movement of the moving block.
Preferably, the multi-axis moving mechanism comprises an X-axis linear guide rail, a Y-axis linear guide rail and a Z-axis linear guide rail, wherein the X-axis linear guide rail is positioned on the upper surface of the supporting table, the Y-axis linear guide rail slides on the surface of the X-axis linear guide rail, the Z-axis linear guide rail slides on the surface of the Y-axis linear guide rail, the surface of the Z-axis linear guide rail is connected with a moving seat in a sliding manner, and the laser welding head is fixed at the bottom of the moving seat.
Preferably, the lower surface of the mobile station is fixedly connected with a second bearing seat, an electric sliding rail is arranged on the lower surface of the mobile station, and the second bearing seat slides on the electric sliding rail.
Preferably, an electric rail is arranged on one side of the upper surface of the mobile station, the hydraulic push rod moves on the electric rail in a Z-axis manner through a moving plate on one side of the bearing seat, and a guide bar is fixedly connected to the other side of the mobile station and used for stabilizing the moving direction.
Preferably, the first spring is sleeved on the outer surface of the sliding column, and the second spring is sleeved on the outer surface of the connecting column.
Preferably, a fan is arranged at the top of the case and used for discharging generated smoke dust and heat in the welding process.
Preferably, a plurality of honeycomb nets are arranged on the rear side of the case, a metal shell is attached to the rear side of the honeycomb net, a circulating pipe is arranged in the metal shell and is connected with an output end and an input end of a circulating pump respectively, a refrigerating box is arranged at the output and input end of the circulating pipe, and the refrigerating boxes are fixed on two sides of the case.
Preferably, the refrigeration box is connected with the inside of the welding equipment through a circulating pipe, and a heat absorption fin and a heat dissipation hole are arranged in the refrigeration box and used for cooling heat generated in the welding process.
The working principle is that firstly, the case is used as a main supporting structure of equipment, an observation window is arranged at the top of the case so that an operator can monitor the welding process in real time, and stable structural support is provided through a support frame at the bottom, so that vibration of the equipment is avoided during working. The multi-axis moving mechanism of the device consists of an X-axis linear guide rail, a Y-axis linear guide rail and a Z-axis linear guide rail, which are used for coacting to guide the laser welding head to move accurately along three directions. The X-axis guide rail is positioned above the supporting table and allows the welding head to move in the horizontal direction, the Y-axis guide rail is vertically arranged and controls the displacement of the welding head in the up-down direction, and the Z-axis guide rail is positioned on the Y-axis guide rail and realizes the movement in the front-back direction. This three-dimensional movement ensures that the laser welding head is able to reach each weld point of the workpiece and perform the straight seam welding operation with precise control. The laser welding head is a core welding element of the equipment and is connected with the multi-axis moving mechanism through a moving seat arranged on a Z-axis guide rail. The laser welding head melts the contact surface of the workpiece by a high-energy laser beam to realize butt welding. The triaxial movement of the mobile carriage enables the welding head to be adjusted according to the different positions of the workpiece to ensure accurate positioning of each welding point. The automatic focusing function of the system can be adjusted according to the thickness and the material difference of the workpiece, and the consistency and the high quality of the welding process are ensured. The workpiece is fixed on a moving table, and the moving table is arranged on a supporting table through an electric sliding rail and can move along the X-axis direction for adjusting the position of the workpiece. The electric sliding rail has the function of ensuring that the mobile station can stably slide in the welding process and ensuring the accurate positioning of the workpiece in the welding process. And a second bearing seat is arranged below the mobile station, and the workpiece is kept stable through the sliding device. The clamping mechanism equipped with the device is used for firmly fixing the workpiece to be welded, so that the workpiece is ensured to be stable in the welding process. The clamping mechanism comprises a clamping plate I and a clamping plate II which are symmetrically arranged, and the clamping plate I and the clamping plate II are connected with the arc-shaped shell body through a rotating shaft to form a hinge structure, so that the clamping force can be adjusted by the clamping plate according to the size and the position of a workpiece. the inner side of the clamping plate is provided with a soft sliding plate, so that the surface of a workpiece can be protected from being damaged by clamping force. The hydraulic push rod is connected to the clamping assembly and used for controlling lifting of the clamping mechanism, and the height of the clamping assembly is adjusted through the hydraulic system so as to adapt to workpieces with different heights. This ensures that the work pieces do not interfere with the welding effect during the welding process due to vibration or instability. To further enhance the clamping ability, the device is provided with elastic adjustment, comprising a first spring and a second spring, mounted on the outer surfaces of the sliding column and the connecting column of the clamping plate, respectively. The spring device can automatically adjust clamping force according to the size change of the workpiece, so that the clamping force is moderate in the welding process, and the excessive loosening or tightening of clamping is prevented. the moving assembly adjusts the distance between the clamping mechanisms through the double-headed motor and the threaded rod. The double-end motor drives the moving block to axially move along the threaded rod through the threaded rod, so that the distance between the clamping assemblies is changed, workpieces with different widths are adapted, and stable clamping of the workpieces in the welding process is ensured. In order to ensure long-time operation of the equipment, heat and smoke dust generated in the welding process are discharged through a fan positioned at the top of the case, and the temperature and air circulation inside the equipment are maintained. The refrigerating box is connected with the inside of the welding equipment through the circulating pipe, and heat absorption and dissipation are carried out by utilizing the heat absorption fins and the heat dissipation holes, so that the equipment is prevented from being overheated due to long-time welding.
The invention provides laser equipment for automatic butt welding of straight slits. The beneficial effects are as follows:
1. According to the invention, the accurate movement in the X, Y, Z triaxial directions is realized through the multiaxial movement mechanism, the laser welding head can be accurately adjusted according to the position of the workpiece, and the high-precision operation in the welding process is ensured. The welding method is particularly suitable for a butt welding scene, can effectively improve the flatness and precision of the welding seam, and reduces errors and rework rate.
2. According to the clamping mechanism, the clamping force can be automatically adjusted according to the shape and the size of the workpiece by combining the elastic adjusting device and the hydraulic push rod through the clamping plate I and the clamping plate II which are symmetrically arranged, so that the workpiece is ensured to be stable and not to move in the welding process. The flexibility of the clamping plate is improved by stretching the soft sliding plate, and the integrity and the attractiveness of the workpiece are further ensured.
3. The invention is equipped with multiple heat dissipation and refrigeration measures such as a fan, a refrigeration box, a honeycomb net and the like, can effectively discharge heat in the welding process, and ensures the stability and safety of equipment in long-term operation. The refrigeration system can effectively cool the core component of the welding equipment through the matching of the circulating pipe and the heat absorption fins, and the influence of overheating on welding quality is prevented.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a rear perspective view of the present invention;
FIG. 3 is a schematic diagram of the internal structure of the chassis according to the present invention;
FIG. 4 is a schematic diagram of a mobile station according to the present invention;
FIG. 5 is a schematic view of a support table according to the present invention;
FIG. 6 is a schematic view of an electric sliding rail according to the present invention;
FIG. 7 is a schematic view of an outer housing of the present invention;
FIG. 8 is a schematic cross-sectional view of an outer housing of the present invention;
FIG. 9 is a right side schematic view of the chassis of the present invention;
FIG. 10 is a schematic view of a circulation tube of the present invention.
Wherein, 1, a machine case, 2, an observation window, 3, a support frame, 4, a support table, 5, an X-axis linear guide rail, 6, a Y-axis linear guide rail, 7, a Z-axis linear guide rail, 8, a movable seat, 9, a laser welding head, 10, a movable table, 11, an electric rail, 12, a first bearing seat, 13, a guide bar, 14, a movable plate, 15, a second bearing seat, 16, an electric slide rail, 17, a hydraulic push rod, 18, an outer shell, 19, a double-headed motor, 20, a threaded rod, 21, a movable block, 22, a support rod, 23, an arc-shaped outer shell, 24, a sliding column, 25, a first spring, 26, a rotating plate, 27, a connecting column, 28, a second spring, 29, a rotating shaft, 30, a clamping plate, 31, a second clamping plate, 32, a flexible sliding plate, 33, a fan, 34, a refrigerating box, 35, a metal shell, 36, 37, a heat dissipation hole, 38, a heat absorption fin, 39, a circulating pump, 40 and a honeycomb net.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, an embodiment of the present invention provides a laser apparatus for automatic butt welding of straight slits, including:
In this embodiment, the main body of the device is the chassis 1, and the chassis not only provides an integral supporting structure of the device, but also plays a role in protection and isolation. The internal structure of the chassis is reasonable in design, and a supporting table 4 for supporting other key components is arranged, and is mainly used for bearing core components of welding operation, such as a multi-axis moving mechanism, a laser welding head and the like. Meanwhile, the transparent observation window 2 is designed at the front part of the case, so that an operator can observe the progress of internal welding clearly, and the operator can adjust the position of a workpiece and the operation parameters of equipment at any time in the welding process. The external structure of the case is reinforced by the support frame 3, and the support frame has the function of firmly fixing the case on the worktable surface, so that workpiece displacement or welding errors caused by vibration generated by equipment in the welding process are avoided. The stable supporting structure is helpful for ensuring the overall operation stability of the equipment and improving the welding precision and quality.
During the running process of the equipment, an operator can monitor the whole welding operation process in real time through the observation window 2, and timely adjust and optimize welding parameters. This not only improves the efficiency of the welding, but also avoids the problem of possible welding defects. The arrangement of the observation window also improves the operation safety, and can effectively monitor the operation of the equipment and reduce the operation risk of the equipment under the condition that an operator does not need to directly contact the equipment.
In this embodiment, the welding accuracy of the apparatus is achieved by a multi-axis moving mechanism. The core components of the multi-axis movement mechanism include an X-axis linear guide 5, a Y-axis linear guide 6, and a Z-axis linear guide 7. Wherein an X-axis linear guide 5 is mounted on the surface of the support table 4 and is stationary, which provides a basic support for the movement of the welding head in the horizontal direction. The Y-axis linear guide 6 is slidably mounted above the X-axis linear guide to allow lateral movement along the X-axis to provide vertical movement control of the apparatus in the Y-axis direction. The Z-axis linear guide 7 is attached to the upper part of the Y-axis guide, and can slide to move in the front-rear direction, that is, in the Z-axis direction. Therefore, the three guide rails are mutually matched, and the full-direction movement of the laser welding head 9 in X, Y, Z three dimensions is realized through sliding movement. The design can ensure that the equipment has high flexibility and freedom degree in the welding process, so that the welding head can be accurately adjusted to each point position to be welded according to different workpiece positions and welding requirements.
Through triaxial removal, laser welding head 9 not only can accurately remove on the horizontal plane, can also adjust the position in the vertical direction, realizes the location adjustment of fore-and-aft direction simultaneously. The three-dimensional movement design not only improves the welding precision of the equipment, but also enhances the adaptability of the equipment when processing complex welding workpieces. For example, when the shape of the workpiece is complex or a plurality of welding operations at different positions are required, the system can flexibly cope with, and the butt joint and the sewing of different welding points are completed by automatically adjusting the position of the welding head 9. Meanwhile, the accurate control of the three-axis linkage can ensure the high precision of each welding point, realize a smooth welding path, improve the quality of welding seams and avoid errors caused by manual adjustment.
In a specific operation process, the welding head is fixedly connected through a movable seat 8 on the Z-axis linear guide rail 7, so that the welding head can move in the front-back direction accurately along the Z-axis guide rail. The laser welding head 9 serves as a core welding element for performing precise welding by emitting a high-energy laser beam to melt the contact surface of the workpiece. The welding head is combined with the guide rail system, and the position of the welding head in the three-dimensional space can be freely adjusted, so that accurate welding of different positions of a workpiece is realized.
In this embodiment, the laser welding head 9 is a core welding unit of the apparatus, and melts the contact surface of the workpiece by a high-energy laser beam to realize straight seam butt welding. The laser welding head is connected with the multi-axis moving mechanism through a moving seat 8 arranged on a Z-axis linear guide rail 7, and the moving seat enables the welding head to accurately move to different welding positions according to the control of the three-axis guide rail. In the welding process, the laser beam of the welding head automatically focuses according to the material and thickness of the workpiece, so that the consistency of the welding effect is ensured, and a high-quality welding seam can be ensured.
In this embodiment, the mobile station 10 is used for carrying a workpiece to be welded, and is slidably connected in the chassis. The movable table is connected with the electric slide rail 16, can stably move along the X-axis direction, and ensures that the workpiece can be subjected to position adjustment along with the movement of the welding head in the welding process so as to ensure the accurate positioning of the workpiece. The electric sliding rail is arranged below the mobile station and can provide power for the mobile station so that the mobile station can slide stably. In addition, the second bearing seat 15 is fixedly connected with the lower surface of the mobile station, and the second bearing seat slides on the electric sliding rail, so that the workpiece is stably positioned during welding.
In this embodiment, in order to ensure the stability of the workpiece during welding, the apparatus is provided with a clamping mechanism which is mounted on the mobile station 10. The clamping mechanism comprises a clamping plate I30 and a clamping plate II 31 which are symmetrically arranged, and the clamping plate I and the clamping plate II are hinged with the arc-shaped outer shell 23 through a rotating shaft 29. Through the rotation of pivot, the grip block can be according to its clamping strength of size adjustment of work piece, ensures that the work piece is firmly clamped. At the inboard of grip block, installed soft slide 32, the one end of slide is fixed on grip block one 30, and the other end can slide in the inside of grip block two 31 to provide the buffering protection when the work piece is pressed from both sides tightly, prevent that the clamping force is too big and lead to work piece surface damage.
In this embodiment, the height adjustment of the clamping mechanism is controlled by a hydraulic ram 17. The output end of the hydraulic push rod is connected with the clamping assembly, and the lifting of the clamping assembly is controlled through the hydraulic system, so that the hydraulic push rod is suitable for workpieces with different heights. The hydraulic push rod ensures that the workpiece is kept at a proper height in the welding process, and the reduction of welding precision caused by improper height is avoided.
In this embodiment, the apparatus is further provided with an elastic adjusting means for automatically adjusting the clamping force according to the size and shape change of the workpiece. The elastic adjustment means are composed of a first spring 25 and a second spring 28, which are mounted on the external surfaces of the sliding column 24 and the connecting column 27, respectively. Through the elasticity regulation of spring, fixture can adapt to the work piece of different shapes automatically, ensures the stability of centre gripping, can not damage the work piece because of the clamping strength is too big, also can not lead to the work piece not hard up because of the dynamics is not enough yet.
In this embodiment, the moving assembly of the apparatus is used to adjust the spacing between the clamping assemblies to accommodate workpieces of different widths. The moving assembly is driven by a double-ended motor 19 which, by engaging a threaded rod 20, rotates the latter. The threaded rod is in threaded connection with the moving block 21, and the moving block moves along the threaded rod to drive the supporting rod 22 of the clamping assembly to horizontally adjust, so that the distance between the clamping plates is changed. Through this remove subassembly, the work piece of different width can be adapted to equipment, ensures that the work piece remains stable throughout in the welding process.
In this embodiment, in order to ensure temperature control when the apparatus is operated for a long time, a fan 33 is installed at the top of the cabinet for exhausting smoke and heat generated during welding, and maintaining air circulation inside the apparatus. In addition, the apparatus is equipped with a refrigeration system, cooling being achieved by the refrigeration cassette 34 and the circulation tube 36. The cooling box is internally provided with heat absorption fins 38 and heat dissipation holes 37, the heat absorption fins are used for absorbing redundant heat in the welding process, and the heat dissipation holes dissipate heat through air circulation, so that the equipment is prevented from being overheated due to long-time work. The refrigeration system is connected to the inside of the apparatus by a circulation pump 39 which pushes the refrigerant to flow in the circulation pipe, ensuring that the apparatus maintains a proper operating temperature during the welding process.
In this embodiment, to further enhance the heat dissipation effect, the device is provided with a plurality of cellular networks 40 on the rear side of the chassis, which enhance the heat dissipation performance of the device by increasing the air circulation. In addition, a metal shell 35 is installed at the rear of the honeycomb net, and a circulating pipe is arranged in the metal shell and used for pushing cooling liquid to carry out circulating cooling through a circulating pump. This design further ensures that the device can operate for a long time in a high temperature environment, avoiding the welding quality degradation of the device due to overheating.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.