Welding test system and method based on multi-specification test plates

Abstract

The invention provides a welding test system and method based on multi-specification test plates. The welding test system comprises a welding power source, an electrical control system, an automatic welding system, a multi-channel welding system, a stacking tool and a plurality of welding tools. The multi-channel welding system comprises a plurality of wire feeders and a plurality of welding guns; the electric control system is electrically communicated with the welding power source and the multi-channel welding system, the automatic welding system is electrically connected with the electric control system and is connected with each welding gun, the stacking and covering tool is configured to adjustably support a test plate, each welding tool is provided with a reversible deformation support, and the reversible deformation support is used for supporting the test plate. When the automatic welding system controls the welding gun to weld the multiple test plates in the first state, the reversible deformation support adjusts the reversible deformation angles of the test plates. According to the test system provided by the invention, the same welding power supply and tool design are used in a matched manner, test plates of different specifications can be welded and tested without changing welding parameters, the welding stability and consistency are ensured, and the welding precision and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the field of welding testing, and in particular to a welding testing system and testing method based on test plates of multiple specifications. Background Art

[0002] In pipeline construction, welding wire testing is an important means to ensure the qualified rate of pipeline on-site construction. Traditional welding wire testing is mainly manual welding. Usually, in order to meet the time schedule, multiple welding power supplies need to be used at the same time, and each welding power supply often needs to be independently equipped with a wire feeder, a welding gun and a specification of welding wire. This testing method has many defects. Manual welding cannot guarantee stability. When the welding results deviate from expectations, it is impossible to determine whether it is a manual operation problem or a welding wire problem; the welding power supply is not uniform, making it difficult to determine the root cause of the welding problem; during the welding process, the specifications and dimensions of the test plate change, and the manual anti-deformation control accuracy is poor. At the same time, the welding parameters cannot adapt to the changes in the specifications and dimensions of the test plate, affecting the weld formation and quality. Summary of the invention

[0003] In response to the above problems, the present invention provides a welding test system and test method based on test plates of multiple specifications, which can provide a stable welding trajectory for welding wire testing, and use the same welding power supply and mechanical tooling design. Test plates of different specifications can be welded without changing welding parameters, thereby ensuring the stability and consistency of welding, improving the accuracy and efficiency of welding, reducing labor costs, and improving the working environment.

[0004] The technical solution of the present invention is:

[0005] A first aspect of the present invention provides a welding test system based on a multi-specification test plate, comprising a welding power source, an electrical control system, an automatic welding system, a multi-channel welding system, a stacking tool and a plurality of welding tools;

[0006] The multi-channel welding system includes a plurality of wire feeders and a plurality of welding guns, each of the wire feeders is connected to each of the welding guns in a one-to-one correspondence, and each of the wire feeders is equipped with welding wires of different specifications; wherein,

[0007] The electrical control system is electrically connected to the welding power source and the multi-channel welding system respectively, so as to control the plurality of welding guns to weld the welding wires of corresponding specifications to the plurality of test plates of different specifications under different welding conditions; wherein the plurality of test plates of different specifications are respectively fixed on the plurality of welding fixtures; and,

[0008] The automatic welding system is electrically connected to the electrical control system and to each of the welding guns to automatically control each of the welding guns to move with preset welding parameters;

[0009] Wherein, the cladding tool is configured to adjustably support the test plate, so that the automatic welding system controls the welding gun to clad the end surfaces to be welded of the plurality of test plates to a first state;

[0010] Wherein, each of the welding tools is provided with an anti-deformation support, and the anti-deformation support is configured to adjust the anti-deformation angle of the test plate when the automatic welding system controls the welding gun to weld the plurality of test plates in the first state.

[0011] Optionally, the welding conditions include at least one of welding current, welding voltage and wire feeding speed; the welding parameters include at least one of welding speed, welding direction, welding distance, welding angle and welding trajectory.

[0012] Optionally, the stacking tool comprises:

[0013] A base, for placing on an operating table;

[0014] A support seat, located above the base, for supporting at least one of the test panels;

[0015] A lifting mechanism, with upper and lower ends respectively connected to the base and the support seat;

[0016] A lead screw, a support rod sleeved on the outer periphery, and a movable rod connected to the transmission;

[0017] A hand wheel connected to the end of the lead screw to apply a rotational torque to rotate the lead screw, thereby driving the movable rod to reciprocate along the axial direction of the lead screw;

[0018] Wherein, the lifting mechanism is hinged to the movable rod and the support rod respectively; when the movable rod moves toward the direction close to the hand wheel, the lifting mechanism drives the support seat to rise, and when the movable rod moves toward the direction away from the hand wheel, the lifting mechanism drives the support seat to descend.

[0019] Optionally, the lifting mechanism includes two telescopic components arranged opposite to each other, each of the telescopic components includes two symmetrically crossed and transversely placed V-shaped rods, a closed end of one of the V-shaped rods is hinged to the movable rod, a closed end of the other V-shaped rod is hinged to the support rod, and the intersection of the two V-shaped rods is hinged;

[0020] Wherein, sliding grooves are provided on the side walls of the base and the support seat, and two end portions corresponding to the open end of the V-shaped rod hinged to the movable rod are movably located in the sliding grooves respectively.

[0021] Optionally, at least one clamp is provided on the support seat, each of the clamps has a trapezoidal space, and the trapezoidal space is used to clamp the test plate.

[0022] Optionally, each of the welding tools further comprises two positioning plates which are symmetrically arranged at intervals, and the two positioning plates are used to abut against one side of the two test plates respectively;

[0023] Wherein, the anti-deformation support is located between the two positioning plates, and is used to abut against the end faces to be welded of the two test plates at the same time;

[0024] Wherein, the height of the anti-deformation support is greater than the height of the positioning plate to offset the deformation angle of the test plate during the welding process.

[0025] Optionally, each of the positioning plates is provided with at least one positioning groove, and a positioning pin is inserted into each of the positioning grooves; wherein the positioning grooves extend from one side of the positioning plate toward the direction of the anti-deformation support.

[0026] Optionally, each of the welding tools further comprises a positioning ruler.

[0027] Optionally, fixing grooves are provided on opposite sides of the anti-deformation support, and each of the fixing grooves is used to clamp the end face to be welded of the corresponding test plate.

[0028] Compared with the prior art, this application has the following advantages:

[0029] The welding test system based on the multi-specification test plate proposed in the embodiment of the present invention includes a welding power supply, an electrical control system, an automatic welding system, a multi-channel welding system, a cladding tool and a plurality of welding tools; the multi-channel welding system includes a plurality of wire feeders and a plurality of welding guns, each of the wire feeders is connected to each of the welding guns in a one-to-one correspondence, and each of the wire feeders is equipped with welding wires of different specifications; wherein the electrical control system is electrically connected to the welding power supply and the multi-channel welding system respectively, so as to control the plurality of welding guns to weld the welding wires of corresponding specifications to a plurality of test plates of different specifications under different welding conditions; wherein the plurality of test plates of different specifications They are respectively fixed on a plurality of the welding fixtures; and the automatic welding system is electrically connected to the electrical control system and to each of the welding guns to automatically control each of the welding guns to move with preset welding parameters; wherein the cladding fixture is configured to adjustably support the test plate so that the automatic welding system controls the welding gun to clad the end faces to be welded of the plurality of test plates to a first state; wherein each of the welding fixtures is provided with an anti-deformation support, and the anti-deformation support is configured to adjust the anti-deformation angle of the test plate during the process in which the automatic welding system controls the welding gun to weld the plurality of test plates in the first state.

[0030] Through the multifunctional welding system and electrical control system provided by the embodiment of the present invention, each wire feeder is equipped with different welding wires and corresponding welding guns, so that one welding power source can be used to weld test plates of various specifications separately at the same time, thereby avoiding the influence of inconsistent welding power sources on the welding wire test results, and welding wire tests can be performed on test plates of various specifications in the same time period without replacing the conductive nozzle of the welding gun, thereby improving the timeliness of welding work and the welding test efficiency;

[0031] The automatic welding system and the stacking tooling provided by the embodiment of the present invention solve the problems of welding stability and point accuracy, thereby avoiding the influence of human factors on the welding test results during manual welding tests. At the same time, the stacking tooling adopts a lifting method to accurately control the cross-sectional height of the test plate to be stacked, and uses the same welding procedure without changing welding parameters, thereby reducing costs.

[0032] By using the matching welding tooling provided in the embodiment of the present invention, the height of the anti-deformation support is adjusted for multiple test plates of different widths to counteract the deformation angles of test plates of different specifications. While achieving the anti-deformation effect, there is no need to change the welding parameters. By using the same welding procedure, a qualified welding effect can be achieved, thereby ensuring welding reliability and consistency.

[0033] The second aspect of the present invention further provides a testing method for welding multi-specification test plates, which uses the welding testing system based on multi-specification test plates provided by the first aspect of the present invention to perform welding.

[0034] The advantages of the testing method and the welding testing system described above over the prior art are the same and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1 It is a working principle diagram of the welding test system based on multi-specification test plates described in this application;

[0037] Figure 2 It is a front view structural diagram of the stacking tooling described in one embodiment of the present application;

[0038] Figure 3 It is a schematic diagram of the overall structure of a welding tool according to another embodiment of the present application;

[0039] Figure 4 This is a top view of the welding tool described in another embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1. Hand wheel; 2. Lead screw; 3. Movable rod; 4. Support rod; 5. Support seat; 6. Base; 7. Telescopic assembly; 8. Slide; 9. Anti-deformation support; 10. Positioning plate; 11. Positioning groove; 12. Test plate; 13. Positioning pin; 121. End face to be welded. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] It should be noted that in the welding quality and safety test, welding wire is the main filling material in the welding process, and its quality directly affects the strength, sealing and corrosion resistance of the welded joint. The welding wire test can detect the quality and performance of the welding wire to ensure the welding quality and safety. The welding wire test has a variety of test items, including mechanical property testing and chemical analysis of the welding wire before welding, and verification testing before actual pipeline welding. In the present invention, a welding joint is formed by welding the welding wire to the welded substrate, and the performance of the welding joint is tested to simulate the performance of the welding wire in the actual welding process.

[0044] It can be understood that the test plate 12 mentioned herein is the base material to be welded. During the welding wire test, the specifications of the test plate 12 change, that is, the width of the test plate 12 is shortened as the number of tests increases. Therefore, in actual tests, it is often necessary to use test plates 12 of different specifications for welding wire testing.

[0045] In actual testing, there are at least four deficiencies:

[0046] 1. Manual welding is easily affected by factors such as the operator's skill level and operating experience, resulting in instability in welding quality. The uneven welds, pores, slag inclusions, cracks and other defects shown in the welded joints cannot be directly determined as quality and performance problems of the welding wire;

[0047] 2. Test plates 12 of different specifications usually need to match welding wires, welding currents and / or voltages of different specifications. Therefore, each specification of test plate 12 corresponds to specific welding requirements, and the welding power source needs to be adjusted according to the welding requirements. However, a welding power source can only output a fixed current and voltage in the same period of time to power a wire feeder. A wire feeder can only output welding wire of one specification. Therefore, for welding wire tests of test plates 12 of different specifications, matching multiple welding power sources cannot ensure the uniformity of welding conditions, which is easy to misjudge the quality and performance of the welding wire;

[0048] 3. Thermal stress and thermal strain will be generated during the welding process, causing deformation such as warping, twisting, and shrinkage of the test plate 12. The anti-deformation effect is poor if the operator's welding experience is used to control the anti-deformation, which affects the quality and performance of the welding wire.

[0049] 4. The welding conditions and welding parameters required for test plates 12 of different specifications need to be changed accordingly, but the welding parameters of the robot are fixed, and it is impossible to accurately and stably control the movement trajectory of the welding gun to adapt to the specifications of different test plates 12, resulting in positional deviation of the welding joint or unstable welding quality.

[0050] In view of this, in order to solve the above-mentioned deficiencies, refer to Figure 1 As shown, Figure 1 The schematic diagram of the overall structure of the automated material warehouse of the access node instrument shown in the present invention. An embodiment of the present invention provides a welding test system based on a multi-specification test plate 12, including a welding power supply, an electrical control system, an automatic welding system, a multi-channel welding system, a cladding tooling, and a plurality of welding tools; the multi-channel welding system includes a plurality of wire feeders and a plurality of welding guns, each of the wire feeders is connected to each of the welding guns in a one-to-one correspondence, and each of the wire feeders is equipped with welding wires of different specifications; wherein the electrical control system is electrically connected to the welding power supply and the multi-channel welding system, respectively, to control the plurality of welding guns to weld the welding wires of corresponding specifications to a plurality of test plates 12 of different specifications under different welding conditions; wherein the plurality of test plates 12 of different specifications are respectively It should be fixed on multiple welding fixtures; and the automatic welding system is electrically connected to the electrical control system and to each of the welding guns to automatically control each of the welding guns to move with preset welding parameters; wherein the cladding fixture is configured to adjustably support the test plate 12, so that the automatic welding system controls the welding gun to clad the end faces 121 to be welded of multiple test plates 12 to a first state; wherein each welding fixture is provided with an anti-deformation support 9, and the anti-deformation support 9 is configured to adjust the anti-deformation angle of the test plate 12 during the process of the automatic welding system controlling the welding gun to weld the multiple test plates 12 in the first state.

[0051] Specifically, the welding test system is assembled by a welding power supply, an electrical control system, an automatic welding system, a multi-channel welding system, a stacking tool and a plurality of welding tools. As an integral system, it can simultaneously handle welding wires of various specifications and welding conditions and the setting of welding parameters. The welding power supply can be understood as a device that provides stable current and voltage, which is used to enable the welding gun to excite the arc and melt the welding wire. The wire feeder is a device that controls the feeding speed and direction of the welding wire, and is responsible for feeding the welding wire from a reel or a box into the welding gun. The welding gun is a component that connects the power supply and the welding wire. During the welding process, the welding wire is melted by the electric arc and applied to the groove, thereby fusing with the groove of the test plate 12 to form a welded joint.

[0052] Specifically, the welding power source can be connected to the wire feeder and the welding gun through different cables. The wire feeder and the welding gun can be connected through a hose containing welding wire, shielding gas and cables. The wire feeder feeds the welding wire from the reel into the hose, and then transports it to the conductive nozzle of the welding gun through the hose. Each wire feeder is equipped with a specification of welding wire, and multiple wire feeders can feed welding wires of multiple specifications to multiple welding guns.

[0053] In this embodiment, the welding power supply and multiple wire feeders are respectively connected to the electrical control system, allowing one welding power supply to control the welding conditions for multiple wire feeders at the same time, adapting to the welding wire testing requirements of test plates 12 of different specifications, and making multiple specifications of welding wires be correctly melted and evenly coated on the grooves of test plates 12 of various specifications within the same time period.

[0054] In some embodiments, the electrical control system is connected to a display screen, and the electrical control system can switch to a corresponding working mode according to the operator's selection on the display screen. At the same time, the welding process is monitored and controlled, and various parameters of the welding process, such as current, voltage, temperature, pressure, etc., are measured and displayed through the electrical control system.

[0055] Specifically, the appropriate specifications and types of welding wire can be determined first according to the test plate parameters such as the specifications, materials, groove form, weld arrangement, etc. of the test plate 12, and a wire feeder equipped with welding wire of corresponding specifications can be selected; the electrical control system automatically adjusts the welding conditions according to the input test plate parameters and welding wire parameters such as the specifications, composition, and performance of the welding wire to adapt to the welding needs of test plates 12 of different specifications; wherein the welding conditions include welding current, welding voltage, wire feeding speed, and shielding gas, etc., that is, the electrical control system controls multiple wire feeders at different wire feeding speeds and multiple welding guns at different welding currents and welding voltages for test plates 12 of different specifications to melt welding wires and test plates 12 of corresponding specifications.

[0056] It can be understood that the test plate 12 and the welding wire of the present invention have the same parameters except for the specifications.

[0057] For example, Figure 1 As shown, Figure 1 The working principle diagram of the welding test system based on the multi-specification test plate 12 shown in the present invention. The multi-channel welding system includes a wire feeder No. 1, a wire feeder No. 2, a wire feeder No. 3, a welding gun No. 1, a welding gun No. 2 and a welding gun No. 3, and the wire feeder No. 1 is connected to the welding gun No. 1, the wire feeder No. 2 is connected to the welding gun No. 2, and the wire feeder No. 3 is connected to the welding gun No. 3. The welding gun No. 1 corresponds to the welding tool No. 1, the welding gun No. 2 corresponds to the welding tool No. 2, and the welding gun No. 3 corresponds to the welding tool No. 3; the welding tool No. 1 can place a 240mm wide test plate 12, the welding tool No. 2 can place a 280mm wide test plate 12, and the welding tool No. 3 can place a 300mm wide test plate 12. The welding power supply, the three wire feeders and the three welding guns are respectively connected to the electrical control system, and the electrical control system determines the working modes of the three wire feeders and the corresponding welding guns according to the use conditions.

[0058] Therefore, during the welding wire test, after selecting the position of the welding tooling to be used, the test plate specifications and the welding wire specifications on the display screen, the electrical control system switches to the corresponding wire feeder. Among them, it can be set to call only any one of the wire feeders to work, any two of the wire feeders can be called to work, or three wire feeders can be called to work. Each wire feeder is equipped with different welding wires and corresponding welding guns, and one welding power supply can be used to weld test plates 12 of various specifications separately at the same time, avoiding the influence of inconsistent welding power supplies on the welding wire test results, and can perform welding wire tests on test plates 12 of various specifications in the same time period, without changing the conductive nozzle of the welding gun, thereby improving the timeliness of welding work and the efficiency of welding testing.

[0059] More specifically, when the electrical control system calls the wire feeder and the corresponding welding gun to start or stop welding, the automatic welding system automatically controls the action of the welding gun according to the preset welding program and parameters, replacing the operator to complete the welding, thus eliminating the need for manual intervention and achieving efficient and stable automatic welding. This solves the problems of welding stability and point accuracy, thereby avoiding the influence of human factors on the welding test results during manual welding tests.

[0060] Specifically, the automatic welding system can be an automatic welding robot. A robot refers to a mechanical device with multiple degrees of freedom, programmable and repeatable motion, which can imitate human arms and fingers to perform welding operations. The robot is connected to a welding gun and an electrical control system respectively. Usually, the end effector of the robot clamps the welding gun. The electrical control system serves as a control cabinet of the robot to control the welding parameters of the robot, so that the welding gun moves along the preset welding parameters during the welding process. The welding parameters include at least one of welding speed, welding direction, welding distance, welding angle and welding trajectory.

[0061] It should be understood that robot welding is a common welding operation mode. Through pre-programmed welding procedures and path planning, combined with feedback information from sensors and electrical control systems, the welding gun is controlled to move at the groove of the test plate 12 according to a set trajectory, speed and posture.

[0062] As a specific explanation, the robot executes the walking trajectory, controls the robot's positioning accuracy and trajectory accuracy within ±0.05, and determines the welding path through manual programming. The robot moves and operates along a specific trajectory in the work area according to the pre-programmed path and action plan. The welding trajectory can be a straight line, curve or a complex multi-segment path. The robot executes stably in three-dimensional space, solving the problems of welding speed stability and point accuracy, improving test efficiency and quality, and reducing labor costs.

[0063] As a specific explanation, the robot can be configured with a positioning function, and the accuracy of the positioning function is within ±0.05mm. The positioning function enables the robot to automatically identify and locate the test plate 12 in the working scene, thereby adjusting its own posture and position. After manual programming, the dry extension length may not be very accurate. Through the configured positioning function, the dry extension length of the welding wire can be guaranteed to be accurate. With accurate dry extension length, the actual current and voltage of welding can be stable, ensuring the heat input of the weld is stable (heat input affects welding deformation) and dimensional stability.

[0064] It can be known that the welding trajectory of the robot is usually fixed. When the specifications of the test plate 12 change, it directly affects the welding parameters such as the welding trajectory and welding speed of the robot during the welding process. If the welding parameters of the robot need to be changed, the programming of the robot needs to be adjusted.

[0065] The embodiment of the present invention is provided with a cladding tool to facilitate the welding gun to clad the test plate 12. Specifically, the change in the specification of the test plate 12 means that the width of the test plate 12 is shortened as the number of welding times is performed, while the length and thickness of the test plate 12 are usually fixed. Therefore, for the test plate 12 with shortened width, for example, for the test plate 12 with a width of 240mm-300mm, it is at different heights on the cladding tool during the cladding process, and the welding trajectory of the robot is fixed, so the cladding position of the test plate 12 will deviate. Through the adjustable characteristics of the cladding tool, the test plates 12 of different widths are at the same height on the cladding tool to adapt to the welding trajectory of the robot.

[0066] It can be understood that the cladding can strengthen and repair the end face 121 to be welded of the test plate 12, so that it has better wear resistance, heat resistance, corrosion resistance, etc. in the subsequent welding process. The end face 121 to be welded refers to the side of the test plate 12 where the welding groove is formed. Usually, the end face 121 to be welded of the test plate 12 is an inclined surface, so that a V-shaped groove is formed when the two test plates 12 are arranged relative to each other, and the welding wire melts and fills in the V-shaped groove to form a welded joint.

[0067] The test plate 12 is usually placed vertically on the cladding tooling, and the end surface 121 to be welded is located at the top as the top surface, which is convenient for robot cladding. Due to the different widths of the test plates 12, the heights of the test plates 12 are different when placed vertically, and the end surfaces 121 to be welded of multiple test plates 12 are at different horizontal heights. For test plates 12 with different widths, the cladding tooling is improved, wherein the cladding tooling includes:

[0068] The base 6, as the bearing part of the whole device, is used to support various components and at least one test plate 12 to be clad. The support seat 5 is located above the base 6 and is connected to the base 6 through a lifting mechanism. Through the lifting and lowering movement of the lifting mechanism, the support seat 5 is raised when the distance between the support seat 5 and the base 6 increases, and is lowered when the distance between the support seat 5 and the base 6 decreases, thereby realizing the height adjustment of the support seat 5.

[0069] For example, if the support seat 5 is in an unraised state, the robot's welding parameters are suitable for welding a 300mm wide test plate 12. Therefore, when a 240mm wide test plate 12 needs to be clad, the 240mm wide test plate 12 can be placed vertically on the support seat 5, and the support seat 5 is raised to increase the height of the test plate 12 until the top surface of the 240mm wide test plate 12 is consistent with the top surface of the 300mm wide test plate 12; when the 240mm wide test plate 12 is clad, the corresponding test plate 12 can be removed and the 260mm wide test plate 12 can be replaced. At this time, the support seat 5 is appropriately lowered to reduce the height of the test plate 12 until the top surface of the 260mm wide test plate 12 is consistent with the top surface of the 300mm wide test plate 12.

[0070] A test plate 12 of the same specification should be placed on the support seat 5 for each cladding operation.

[0071] For further information, see Figure 2 , Figure 2 The front view of the stacking tooling of the present invention is shown in FIG. The lifting mechanism is connected to the lead screw 2 through the support rod 4 and the movable rod 3. A hand wheel 1 is arranged at the end of the lead screw 2. The lead screw 2 is driven to rotate by manually rotating the hand wheel 1. The outer periphery of the lead screw 2 is provided with the movable rod 3. The two form a ball screw 2 mechanism. The rotational motion of the lead screw 2 is converted into the axial motion of the movable rod 3, so that the movable rod 3 slides on the lead screw 2.

[0072] Specifically, the lifting mechanism includes two telescopic components 7 arranged opposite to each other, each of the telescopic components 7 includes two symmetrically crossed and horizontally placed V-shaped rods, a closed end of the V-shaped rod is hinged to the movable rod 3, and the closed end of the other V-shaped rod is hinged to the support rod 4, and the intersection of the two V-shaped rods is hinged; wherein, a slide groove 8 is opened on the side walls of the base 6 and the support seat 5, and the two end portions corresponding to the open end of the V-shaped rod hinged to the movable rod 3 are respectively movably located in the slide groove 8.

[0073] Among them, two oppositely arranged telescopic components 7 are respectively hinged on the opposite sides of the support rod 4 and the movable rod 3, and the telescopic components 7 on the same side form a cross-hinged structure. The openings of the two V-shaped rods face each other, and the opening direction extends horizontally. Each V-shaped rod includes two angled support rods, one end of the two support rods of one V-shaped rod is hinged on the movable rod 3, and the two support rods of the other V-shaped rod are respectively hinged on the support rod 4. The free ends of the two support rods hinged to the movable rod 3 are respectively movably connected to the base 6 and the support seat 5, and the free ends of the two support rods hinged to the support rod 4 are respectively fixedly connected to the base 6 and the support seat 5.

[0074] Since the two ends of the V-shaped rod are supported on the base 6 and the support seat 5 respectively, when the movable rod 3 moves close to the support rod 4, the two ends of a V-shaped rod slide forward in the slide groove 8 of the base 6 and the support seat 5, the two ends of the two V-shaped rods are stressed, and the closed end of the V-shaped rod has a hinge point, so that the angle between the two supporting rods forming the V-shaped rod increases, that is, the opening of the V-shaped rod gradually increases, so that the distance between the base 6 and the support seat 5 increases, thereby increasing the height of the support seat 5. Conversely, when the movable rod 3 moves away from the support rod 4, the two ends of a V-shaped rod slide reversely in the slide groove 8 of the base 6 and the support seat 5 respectively, the two ends of the two V-shaped rods are stressed, and the closed end of the V-shaped rod has a hinge point, so that the angle between the two supporting rods forming the V-shaped rod decreases, that is, the opening of the V-shaped rod gradually decreases, so that the distance between the base 6 and the support seat 5 decreases, thereby reducing the height of the support seat 5.

[0075] Wherein, the intersection of the two V-shaped rods is provided with a hinge point so that the two V-shaped rods move synchronously. In some embodiments, the two relatively arranged telescopic assemblies 7 can be connected as a whole by a plurality of fixed rods. For example, the intersection of the two V-shaped rods on the same side is hinged to one end of a fixed rod, and the intersection of the two V-shaped rods on the other side is hinged to the other end of the fixed rod. In some embodiments, the V-shaped rods sliding on both sides of the base 6 are connected by a fixed rod. In some embodiments, the V-shaped rods sliding on both sides of the support seat 5 are connected by a fixed rod.

[0076] At least one clamp is arranged on the support seat 5, and each of the clamps has a trapezoidal space, and the trapezoidal space is used to clamp the test plate 12. In this embodiment, the clamp is composed of two clamps arranged opposite to each other, one of which is gradually inclined toward the other clamp to form a trapezoidal space with a larger bottom and a smaller top. The test plate 12 is placed vertically in the trapezoidal space, and the end face 121 to be welded is located at the top. Since the end face 121 to be welded of each test plate 12 is an inclined surface, which is at an angle to the horizontal plane, and the welding trajectory of the robot is usually horizontal cladding, a clamp is arranged on the support seat 5. When the test plate 12 is installed in the trapezoidal space, the test plate 12 is at a certain angle to the horizontal plane of the support seat 5, so that the end face 121 to be welded of the test plate 12 is flush with the horizontal plane, so as to realize the horizontal cladding of the robot.

[0077] Preferably, a scale can be provided on the stacking tool to calibrate the placement height of the test plate 12 .

[0078] During specific implementation, when the handwheel 1 rotates clockwise, the screw 2 is driven to rotate, and the movable rod 3 moves forward along the spiral direction of the screw 2, and the movable rod 3 moves forward along the spiral direction of the threaded rod, pushing the angle of the V-shaped rod along the hinge point to increase, causing the support seat 5 to rise, so that the test plate 12 is raised; when the movable rod 3 rotates counterclockwise, the movable rod 3 moves backward along the spiral direction of the screw 2, pushing the angle of the V-shaped rod along the hinge point to decrease, causing the support seat 5 to descend, so that the test plate 12 is lowered.

[0079] In this way, the stacking tool adopts a lifting method to accurately control the cross-sectional height of the test plate 12 to be stacked. When the same stacking procedure is used to place test plates 12 of different widths, the height of the stacking tool can be adjusted. Compared with the method of adjusting the welding procedure to adapt to test plates 12 of different widths, which has many welding procedures, high power consumption, and poor stability, the stacking tool adjusts the height of the support seat 5 to keep the end faces 121 to be welded of the test plates 12 of different widths at the same height, which can facilitate the robot to use the same welding procedure to melt the test plates 12 of different widths in batches, simplify the programming and control of the robot, and reduce costs and maintenance.

[0080] See also Figure 3 and Figure 4 , Figure 3 and Figure 4 They are respectively an axonometric view and a top view of the welding tooling shown in the present invention.

[0081] In another embodiment, each of the welding fixtures further includes two symmetrically spaced positioning plates 10, the two positioning plates 10 being used to abut against one side of the two test plates 12 respectively; wherein the anti-deformation support 9 is located between the two positioning plates 10, and is used to abut against the end faces 121 to be welded of the two test plates 12 at the same time; wherein the height of the anti-deformation support 9 is greater than the height of the positioning plates 10, so as to offset the deformation angle of the test plates 12 during the welding process. Furthermore, each of the positioning plates 10 is provided with at least one positioning groove 11, and a positioning pin 13 is inserted into each of the positioning grooves 11; wherein the positioning groove 11 extends from one side of the positioning plate 10 toward the direction of the anti-deformation support 9.

[0082] Specifically, during the welding wire test, the test plate 12 will generate thermal stress due to the heat input during the welding process, resulting in welding deformation, and the deformation angles of the test plates 12 of different specifications are also different. The deformation angles of the test plates 12 of different specifications should be less than 5°. Anti-deformation welding control is usually performed based on human experience, while robot welding still requires changing welding parameters to change the size of welding heat input. In this embodiment, an anti-deformation support 9 is provided, and the height of the anti-deformation support 9 is adjusted to counteract the deformation angles of the test plates 12 of different specifications to achieve an anti-deformation effect.

[0083] Specifically, the positioning plate 10 is two test plates 12 that are fixed to form the grooves, and the two positioning plates 10 are arranged one after the other. The end faces 121 to be welded of the two test plates 12 are fixed on the anti-deformation support 9, and the other end faces are placed on the positioning plate 10. The adjacent end faces of the end faces 121 to be welded are in the width direction of the test plate 12. Preferably, fixing grooves are provided on the opposite sides of the anti-deformation support 9, and each of the fixing grooves is used to clamp the end faces 121 to be welded of the corresponding test plate 12, so that the end faces 121 to be welded of the two test plates 12 are stably fixed on the anti-deformation support 9. The positioning plate 10 can control the gap between the two test plates 12, that is, the size of the groove. At the same time, a positioning ruler is provided along the installation direction of the positioning plate 10. The positioning ruler can be fixed on the operating table by bolts. The direction of the positioning ruler is the same as the width direction of the test plate 12, and the positioning accuracy fully meets the welding accuracy requirements.

[0084] After the two test plates 12 are positioned, the positioning pin 13 can be fixedly inserted into the positioning groove 11, so that the positioning pin 13 abuts against the opposite end face of the end face to be welded 121 to ensure the size of the groove during welding. The width of the test plate 12 can be changed between 240-300mm to ensure the position deviation of the center line of the weld, reduce the requirements for personnel proficiency, and improve the test efficiency.

[0085] As a specific explanation of this embodiment, the height of the anti-deformation support 9 can be designed based on practical experience and experimental data.

[0086] Experimental test:

[0087] The embodiment of the present invention selects test plates 12 of different specifications to conduct a series of welding wire tests, and records the deformation angles of the test plates 12 of different widths during welding, as well as the heights of the corresponding anti-deformation supports 9. It should be emphasized that the test plates 12 of different specifications only control the width to vary within the range of 240mm-300mm, and the other parameters of the test plates 12 (test plate thickness, test plate length, material, etc.) are the same, and two groups of tests are conducted on the test plates 12 of the same width to ensure their accuracy.

[0088] According to several groups of experimental data recorded, the experimental data were statistically analyzed to obtain the experimental data table of the test plate width, deformation angle, and anti-deformation support height as shown in Table 1.

[0089] Table 1:

[0090]

[0091] Table 1

[0092] It can be seen from Table 1 that adjusting the height of the anti-deformation support 9 can offset the actual deformation angle of the test plate 12. When the deformation angle of the test plate 12 increases, the height of the anti-deformation support 9 can be increased, so that the anti-deformation angle of the test plate 12 can be adjusted by the anti-deformation support 9. Based on this, according to the experimental data and the experience in actual production, the height of the anti-deformation support 9 of the test plate 12 with a width range of 240mm-300mm under the optimal deformation angle can be obtained, and the test plate 12 of the corresponding width can be placed on the anti-deformation support 9 of the appropriate height in combination with the positioning mark. For example, as shown in Table 1, for a test plate 12 with a width of 280mm, the height of the anti-deformation support 9 can be set to 12mm. Therefore, for multiple test plates 12 with a width of 240mm-300mm, the same welding procedure can be used without changing the welding parameters to achieve a qualified welding effect, thereby ensuring welding reliability and consistency.

[0093] The present invention also provides a test method for welding test plates of multiple specifications, and welding is performed using the welding test system based on the test plates of multiple specifications as described above.

[0094] For the above-mentioned test method embodiment, since it is basically similar to the welding test system embodiment, the description is relatively simple, and the relevant parts refer to the partial description of the welding test system embodiment.

[0095] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. Based on the above-mentioned embodiments 1 to 5, this application provides some examples of specific implementable embodiments. Each embodiment is not a separate implementable embodiment. Under the premise of not conflicting with each other, the various embodiments can be arbitrarily combined and interact with each other to form an automated material library for the access node instrument of this application.

[0096] It should be understood that although the present specification has described the preferred embodiments of the present invention, those skilled in the art may make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0097] The above is a detailed introduction to a welding test system and test method based on multi-specification test plates provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A welding test system based on multi-specification test plates, characterized in that: It includes a welding power source, an electrical control system, an automatic welding system, a multi-channel welding system, a cladding tool and a plurality of welding tools; the multi-channel welding system includes a plurality of wire feeders and a plurality of welding guns, each of the wire feeders is connected to each of the welding guns in a one-to-one correspondence, and each of the wire feeders is equipped with welding wires of different specifications; wherein, The electrical control system is electrically connected to the welding power source and the multi-channel welding system respectively, so as to control the plurality of welding guns to weld the welding wires of corresponding specifications to the plurality of test plates of different specifications under different welding conditions; wherein the plurality of test plates of different specifications are respectively fixed on the plurality of welding fixtures; and, The automatic welding system is electrically connected to the electrical control system and to each of the welding guns to automatically control each of the welding guns to move with preset welding parameters; Wherein, the cladding tool is configured to adjustably support the test plate, so that the automatic welding system controls the welding gun to clad the end surfaces to be welded of the plurality of test plates to a first state; Wherein, each of the welding tools is provided with an anti-deformation support, and the anti-deformation support is configured to adjust the anti-deformation angle of the test plate when the automatic welding system controls the welding gun to weld the plurality of test plates in the first state.

2. A welding test system based on multi-specification test plates according to claim 1, characterized in that: The welding conditions include at least one of welding current, welding voltage and wire feeding speed; the welding parameters include at least one of welding speed, welding direction, welding distance, welding angle and welding trajectory.

3. A welding test system based on multi-specification test plates according to claim 1, characterized in that: The stacking tooling comprises: A base, for placing on an operating table; A support seat, located above the base, for supporting at least one of the test panels; A lifting mechanism, with upper and lower ends respectively connected to the base and the support seat; A lead screw, a support rod sleeved on the outer periphery, and a movable rod connected to the transmission; A hand wheel connected to the end of the lead screw to apply a rotational torque to rotate the lead screw, thereby driving the movable rod to reciprocate along the axial direction of the lead screw; Wherein, the lifting mechanism is hinged to the movable rod and the support rod respectively; when the movable rod moves toward the direction close to the hand wheel, the lifting mechanism drives the support seat to rise, and when the movable rod moves toward the direction away from the hand wheel, the lifting mechanism drives the support seat to descend.

4. A welding test system based on multi-specification test plates according to claim 3, characterized in that: The lifting mechanism comprises two telescopic assemblies arranged opposite to each other, each of the telescopic assemblies comprises two symmetrically crossed and transversely arranged V-shaped rods, a closed end of one of the V-shaped rods is hinged to the movable rod, a closed end of the other V-shaped rod is hinged to the support rod, and the intersection of the two V-shaped rods is hinged; Wherein, sliding grooves are provided on the side walls of the base and the support seat, and two end portions corresponding to the open end of the V-shaped rod hinged to the movable rod are movably located in the sliding grooves respectively.

5. A welding test system based on multi-specification test plates according to claim 3, characterized in that: At least one clamp is arranged on the support seat, and each of the clamps has a trapezoidal space, and the trapezoidal space is used to clamp the test plate.

6. A welding test system based on multi-specification test plates according to claim 1, characterized in that: Each of the welding tools further comprises two positioning plates which are symmetrically arranged at intervals, and the two positioning plates are used to abut against one side of the two test plates respectively; Wherein, the anti-deformation support is located between the two positioning plates, and is used to abut against the end faces to be welded of the two test plates at the same time; Wherein, the height of the anti-deformation support is greater than the height of the positioning plate to offset the deformation angle of the test plate during the welding process.

7. A welding test system based on multi-specification test plates according to claim 6, characterized in that: Each of the positioning plates is provided with at least one positioning groove, and a positioning pin is inserted into each of the positioning grooves; wherein the positioning grooves extend from one side of the positioning plate toward the direction of the anti-deformation support.

8. A welding test system based on multi-specification test plates according to claim 6, characterized in that: Each of the welding tools also includes a positioning ruler.

9. A welding test system based on multi-specification test plates according to claim 6, characterized in that: The anti-deformation support is provided with fixing grooves on opposite sides, and each of the fixing grooves is used for clamping the end face to be welded of the corresponding test plate.

10. A test method for welding multi-specification test plates, characterized in that: Welding is performed using the welding test system based on multi-specification test plates as described in any one of claims 1 to 9.

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