Welding device

Abstract

The invention provides a welding device, which relates to the technical field of welding and comprises a welding gun, a wire feeding mechanism, a first lifting mechanism, a second lifting mechanism, a first synchronizing wheel, a second synchronizing wheel, a first base body, a second base body, a mounting plate, a first screw rod and a second screw rod, the first base body and the second base body are fixed to the mounting plate, a first lead screw is rotationally arranged on the first base body, the welding gun is connected with the first lead screw through a first lifting mechanism, a second lead screw is rotationally arranged on the second base body, the wire feeding mechanism is connected with the second lead screw through a second lifting mechanism, and one end of the first lead screw is sleeved with a first synchronous wheel. And one end of the second lead screw is sleeved with a second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected through a wheel belt. The welding quality can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and more particularly, to a welding device. Background Art

[0002] In the field of automated welding, welding technology has been widely applied due to its high-quality weld formation and wide material adaptability. In particular, the hot wire tungsten inert gas (TIG) welding technology significantly improves the welding efficiency and deposition rate by preheating the welding wire, and plays a key role in many industrial manufacturing scenarios, such as the fields of aerospace and shipbuilding where strict welding quality requirements are imposed.

[0003] However, during the welding process, since the wire feeding device is fixedly connected to the gun body of the welding torch, the up and down movement of the welding torch will cause corresponding changes in the height position of the end of the welding wire, resulting in continuous changes in the relative position between the welding wire and the molten pool, which affects the welding quality. Summary of the Invention

[0004] The problem solved by the present invention is how to improve the welding quality.

[0005] To solve the above problems, the present invention provides a welding device.

[0006] In a first aspect, the present invention provides a welding device, including a welding torch, a wire feeding mechanism, a first lifting mechanism, a second lifting mechanism, a first synchronous pulley, a second synchronous pulley, a first base body, a second base body, and a mounting plate, as well as a first lead screw and a second lead screw with opposite thread directions. The first base body and the second base body are respectively fixed on the mounting plate. The first lead screw is rotatably provided on the first base body. The welding torch is connected to the first lead screw through the first lifting mechanism. The first lifting mechanism is configured to move along the axial direction of the first lead screw when the first lead screw rotates. The second lead screw is rotatably provided on the second base body. The wire feeding mechanism is connected to the second lead screw through the second lifting mechanism. The second lifting mechanism is configured to move along the axial direction of the second lead screw when the second lead screw rotates. One end of the first lead screw is sleeved with the first synchronous pulley, and one end of the second lead screw is sleeved with the second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by a belt.

[0007] Optionally, the first base body includes a first fixing plate, a second fixing plate, and a third fixing plate. One side of the first fixing plate is fixedly connected to the mounting plate. The second fixing plate and the third fixing plate are respectively arranged at two opposite ends of the first fixing plate. One end of the first lead screw passes through the second fixing plate and is rotatably connected to the third fixing plate. A first synchronous pulley is sleeved on the first lead screw on the side of the second fixing plate away from the third fixing plate. The first lifting mechanism is threadedly connected to the first lead screw between the second fixing plate and the third fixing plate.

[0008] Optionally, the first lifting mechanism includes a first lead screw nut, a first slider, and a first sliding plate. A first slide rail parallel to the first lead screw is arranged between the second fixing plate and the third fixing plate. The first lead screw nut is sleeved on the first lead screw. The first sliding plate is connected to the first lead screw nut through the first slider. The first slider is slidably connected to the first slide rail. The welding torch is fixed on the side of the first sliding plate away from the first lead screw.

[0009] Optionally, the welding device further includes a motor and a motor base. The motor is connected to the side of the second baffle away from the first baffle through the motor base. The first synchronous pulley is arranged inside the motor base. The transmission shaft of the motor and the first lead screw are connected inside the motor base.

[0010] Optionally, the welding device further includes a coupling. The transmission shaft of the motor and the first lead screw are connected through the coupling.

[0011] Optionally, the welding device further includes a first bearing and a second bearing. The first lead screw is rotatably connected to the second fixing plate through the first bearing arranged on the second fixing plate. The first lead screw is rotatably connected to the third fixing plate through the second bearing arranged on the third fixing plate.

[0012] Optionally, the second base body includes a fourth fixing plate, a fifth fixing plate, and a sixth fixing plate. One side of the fourth fixing plate is fixedly connected to the mounting plate. The fifth fixing plate and the sixth fixing plate are respectively arranged at two opposite ends of the fourth fixing plate. One end of the second lead screw passes through the fifth fixing plate and is rotatably connected to the sixth fixing plate. A second synchronous pulley is sleeved on the second lead screw on the side of the fifth fixing plate away from the sixth fixing plate. The second lifting mechanism is threadedly connected to the second lead screw between the fifth fixing plate and the sixth fixing plate.

[0013] Optionally, the second lifting mechanism includes a second lead screw nut, a second slider, and a second slide plate. A second slide rail parallel to the second lead screw is provided between the fourth fixed plate and the fifth fixed plate. The second lead screw nut is sleeved on the second lead screw. The second slide plate is connected to the second lead screw nut through the second slider, and the second slider is slidably connected to the second slide rail. The wire feeding mechanism is provided on the side of the second slide plate away from the second lead screw.

[0014] Optionally, the welding device further includes a third bearing and a fourth bearing. The second lead screw is rotatably connected to the fifth fixed plate through the third bearing provided on the fifth fixed plate, and the second lead screw is rotatably connected to the third fixed plate through the fourth bearing provided on the sixth fixed plate.

[0015] Optionally, the wire feeding mechanism includes a connecting rod and a clamping portion. The side arm of the connecting rod is connected to the side of the second slide plate away from the second lead screw, and the lower end of the connecting rod is rotatably connected to the clamping portion. The clamping portion is used for clamping the welding wire.

[0016] The beneficial effects of the welding device of the present invention are as follows: The welding torch and the wire feeding mechanism are respectively connected to the first lead screw and the second lead screw with opposite thread directions. When the first lead screw rotates, the first synchronous pulley drives the second synchronous pulley to rotate synchronously through the belt, and then drives the second lead screw to rotate synchronously. Since the thread directions of the first lead screw and the second lead screw are opposite, the welding torch and the wire feeding mechanism are respectively driven by the first lifting mechanism and the second lifting mechanism, resulting in linear motions in opposite directions. During the welding process, when the welding torch is adjusted up and down to adapt to different welding positions, workpiece shapes, and process requirements, if the wire feeding mechanism is not adjusted, the relative position between the welding wire and the molten pool will change, affecting the welding quality, and will also cause changes in the length and shape of the welding arc, making it difficult to stabilize the wire feeding speed. By adjusting the wire feeding mechanism in the opposite direction, it can ensure that when the position of the welding torch changes, the distance and angle between the tip of the welding wire and the molten pool are maintained within a suitable range, keeping the relative position stable, enabling the welding wire to continuously fill the molten pool with metal at a uniform and precise speed and position, ensuring the stability of the molten pool metal composition, reducing the deviation of the weld chemical composition caused by uneven filling, and reducing the performance defects caused by composition differences, thereby improving the welding quality. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a welding device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the welding torch transmission mechanism according to an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of the wire feeding transmission mechanism according to an embodiment of the present invention.

[0020] Description of the reference numerals:

[0021] 01 - welding torch; 02 - wire feeding mechanism; 021 - connecting rod; 022 - clamping part; 03 - first lifting mechanism; 031 - first lead screw nut; 032 - first slider; 033 - first slide plate; 04 - second lifting mechanism; 041 - second lead screw nut; 042 - second slider; 043 - second slide plate; 05 - first synchronous pulley; 06 - second synchronous pulley; 07 - first base; 071 - first fixing plate; 072 - second fixing plate; 073 - third fixing plate; 074 - first slide rail; 08 - second base; 081 - fourth fixing plate; 082 - fifth fixing plate; 083 - sixth fixing plate; 084 - second slide rail; 09 - mounting plate; 10 - first lead screw; 11 - second lead screw; 12 - motor; 13 - motor base; 14 - first bearing; 15 - second bearing; 16 - third bearing; 17 - fourth bearing; 18 - coupling; 19 - molten pool; 20 - welding wire. Detailed implementation manners

[0022] To make the above - mentioned objects, features and advantages of the present invention more obvious and understandable, the following detailed description will be given to the specific embodiments of the present invention with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0023] It should be understood that the steps recorded in the method implementation manners of the present invention can be executed in different orders and / or executed in parallel. In addition, the method implementation manners may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this regard.

[0024] As used herein, the term "including" and its variants are open - ended, that is, "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiment". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0025] It should be noted that the modification of "one" and "multiple" mentioned in the present invention is illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise clearly specified in the context, it should be understood as "one or more".

[0026] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only for illustrative purposes and are not used to limit the scope of these messages or information.

[0027] In the related art, in automated TIG welding, the wire feeding device is usually fixedly connected to the welding torch. Due to the action of arc voltage tracking, the welding torch will be adjusted up and down, resulting in the adjustment of the position of the wire end, thereby causing the relative position between the wire and the molten pool to change. For example, during additive manufacturing, the relative position between the wire and the molten pool is unstable, resulting in inaccurate wire feeding, restricting the forming accuracy and quality of the product, increasing the scrap rate, and hindering the application of additive manufacturing technology.

[0028] In view of the problems existing in the above-mentioned related art, this embodiment provides a welding device.

[0029] As Figures 1 to 3 shown, a welding device provided by an embodiment of the present invention includes a welding torch 01, a wire feeding mechanism 02, a first lifting mechanism 03, a second lifting mechanism 04, a first synchronous pulley 05, a second synchronous pulley 06, a first base body 07, a second base body 08 and a mounting plate 09, as well as a first lead screw 10 and a second lead screw 11 with opposite thread directions. The first base body 07 and the second base body 08 are respectively fixed on the mounting plate 09. The first lead screw 10 is rotatably arranged on the first base body 07. The welding torch 01 is connected to the first lead screw 10 through the first lifting mechanism 03. The first lifting mechanism 03 is configured to move along the axial direction of the first lead screw 10 when the first lead screw 10 rotates. The second lead screw 11 is rotatably arranged on the second base body 08. The wire feeding mechanism 02 is connected to the second lead screw 11 through the second lifting mechanism 04. The second lifting mechanism 04 is configured to move along the axial direction of the second lead screw 11 when the second lead screw 11 rotates. One end of the first lead screw 10 is sleeved with the first synchronous pulley 05, and one end of the second lead screw 11 is sleeved with the second synchronous pulley 06. The first synchronous pulley 05 and the second synchronous pulley 06 are connected by a belt.

[0030] Specifically, with the mounting plate 09 as the basic support component, the first base body 07 and the second base body 08 are respectively fixed on the mounting plate 09, serving as the support bases for the installation and rotation of the first lead screw 10 and the second lead screw 11 respectively, ensuring the stability of the first lead screw 10 and the second lead screw 11 during operation. The first lead screw 10 is rotatably connected to the first base body 07. A first synchronous pulley 05 is sleeved on the upper end of the first lead screw 10. The first synchronous pulley 05 is tightly connected to the first lead screw 10 and rotates with the rotation of the first lead screw 10, enabling effective transmission of power. That is, when the first lead screw 10 rotates, it can drive the first synchronous pulley 05 to rotate synchronously. The first lifting mechanism 03 and the first lead screw 10 can be threadedly connected through a lead screw nut, that is, the nut inside the first lifting mechanism 03 matches the thread of the first lead screw 10. In this way, when the first lead screw 10 rotates, the nut moves along the axial direction of the lead screw under the action of the thread, thereby driving the welding torch 01 connected to the nut to perform a lifting motion, realizing the movement of the welding torch 01 in the vertical direction.

[0031] Furthermore, the second lead screw 11 is installed on the second base body 08 and rotatably connected thereto. A second synchronous pulley 06 is sleeved on the upper end of the second lead screw 11. Similarly, the second synchronous pulley 06 is tightly connected to the second lead screw 11. The first synchronous pulley 05 and the second synchronous pulley 06 are connected by a belt. That is, when the first synchronous pulley 05 rotates, it can drive the second synchronous pulley 06 to rotate synchronously through the belt. The second lifting mechanism 04 and the second lead screw 11 can also be connected by a lead screw nut. When the second lead screw 11 rotates, the second lifting mechanism 04 can move along the axial direction of the second lead screw 11, thereby driving the wire feeding mechanism 02 connected to the second lifting mechanism 04 to move in the vertical direction, enabling the wire feeding mechanism 02 to accurately feed the welding wire 20 to the welding area. Since the first synchronous pulley 05 and the second synchronous pulley 06 are connected by a belt, the function of the belt is to transmit the rotation of the first synchronous pulley 05 to the second synchronous pulley 06, realizing the synchronous rotation of the two lead screws. Since the thread directions of the first lead screw 10 and the second lead screw 11 are opposite, when the two lead screws rotate synchronously, the welding torch 01 and the wire feeding mechanism 02 will move in opposite directions. That is, when the welding torch 01 moves upward along the axial direction of the first lead screw 10, the wire feeding mechanism 02 moves downward, and when the welding torch 01 moves downward along the axial direction of the first lead screw 10, the wire feeding mechanism 02 moves upward.

[0032] Exemplarily, during the welding process, when the position of the welding torch 01 moves axially along the first lead screw 10 due to welding requirements through the first lifting mechanism 03, since the first synchronous pulley 05 and the second synchronous pulley 06 are connected by a belt, and the thread directions of the first lead screw 10 and the second lead screw 11 are opposite, this will cause the wire feeding mechanism 02 to move in the opposite direction axially along the second lead screw 11 through the second lifting mechanism 04. During welding, the arc will generate a certain pressure of its own. When the welding torch 01 moves up and down, the arc length changes, and the arc voltage will also change accordingly. By making the wire feeding mechanism 02 move in the opposite direction to the welding torch 01, the relative position between the welding wire 20 and the molten pool 19 and the wire feeding speed can be adjusted to a certain extent, so as to adapt to the change of the arc voltage and maintain the stable combustion of the arc. For example, when the welding torch 01 rises and the arc length increases, the arc voltage may change. At this time, the wire feeding mechanism 02 moves downward to increase the wire feeding speed, so that the welding wire 20 can be timely replenished into the arc, maintaining the stability of the arc to cope with the change of the arc voltage and ensuring the welding quality.

[0033] In this embodiment, the welding torch 01 and the wire feeding mechanism 02 are respectively connected to the first lead screw 10 and the second lead screw 11 with opposite thread directions. When the first lead screw 10 rotates, the first synchronous pulley 05 drives the second synchronous pulley 06 to rotate synchronously through the belt, and then drives the second lead screw 11 to rotate synchronously. Since the thread directions of the first lead screw 10 and the second lead screw 11 are opposite, the first lifting mechanism 03 and the second lifting mechanism 04 drive the welding torch 01 and the wire feeding mechanism 02 respectively, resulting in linear motions in opposite directions for the two. During the welding process, when the welding torch 01 is adjusted up and down to adapt to different welding positions, workpiece shapes and process requirements, if the wire feeding mechanism 02 is not adjusted, the relative position between the welding wire 20 and the molten pool 19 will change, affecting the welding quality, and will also cause changes in the welding arc length and shape, making it difficult to stabilize the wire feeding speed. However, through the reverse adjustment of the wire feeding mechanism 02, it can be ensured that when the position of the welding torch 01 changes, the distance and angle between the tip of the welding wire 20 and the molten pool 19 are maintained within a suitable range, keeping the relative position stable, enabling the welding wire 20 to continuously fill the molten pool 19 with metal at a uniform and precise speed and position, ensuring the stability of the metal composition in the molten pool 19, reducing the deviation of the weld chemical composition caused by uneven filling, and reducing the performance defects caused by composition differences, thereby improving the welding quality.

[0034] Optionally, as Figures 1 to 3As shown, the first base body 07 includes a first fixing plate 071, a second fixing plate 072 and a third fixing plate 073. One side of the first fixing plate 071 is fixedly connected to the mounting plate 09. The second fixing plate 072 and the third fixing plate 073 are respectively arranged at opposite ends of the first fixing plate 071. One end of the first lead screw 10 passes through the second fixing plate 072 and is rotatably connected to the third fixing plate 073. A first synchronous pulley 05 is sleeved on the first lead screw 10 on the side of the second fixing plate 072 away from the third fixing plate 073. The first lifting mechanism 03 is threadedly connected to the first lead screw 10 between the second fixing plate 072 and the third fixing plate 073.

[0035] In this alternative embodiment, the first base body 07 serves as a support structure, including a first fixing plate 071, a second fixing plate 072, and a third fixing plate 073. Among them, one side of the first fixing plate 071 is fixedly connected to the mounting plate 09. For example, reliable connection methods such as bolt fastening and welding can be used to achieve the fixed connection, firmly mounting the first base body 07 on the mounting plate 09, ensuring that the first base body 07 does not displace or shake during the operation of the device, providing a stable prerequisite for the precise operation of subsequent components. At the opposite ends of the first fixing plate 071, the second fixing plate 072 and the third fixing plate 073 are respectively vertically connected. That is, the second fixing plate 072 is vertically connected to the upper end of the first fixing plate 071, and the third fixing plate 073 is vertically connected to the opposite lower end. Through this vertical connection method, a stable frame structure is formed, effectively enhancing the overall strength and stability of the first base body 07. One end of the first lead screw 10 passes through the second fixing plate 072 and is rotatably connected to the third fixing plate 073 through rotating connection components such as bearings. Similarly, the first lead screw 10 can also be rotatably connected to the second fixing plate 072 through bearings. This design enables the first lead screw 10 to rotate freely within the first base body 07, while the second fixing plate 072 and the third fixing plate 073 provide reliable support for the lead screw, ensuring the stability and accuracy of the lead screw movement. A first synchronous pulley 05 is sleeved on the first lead screw 10 on the side away from the third fixing plate 073 of the second fixing plate 072. That is, the part of the first lead screw 10 extending out of the first base body 07 at the upper end is sleeved with the first synchronous pulley 05. The first synchronous pulley 05 and the first lead screw 10 can be tightly connected through key connection or other suitable fastening methods, ensuring that when the external power source drives the first lead screw 10 to rotate, the power can be efficiently and stably transmitted to the first synchronous pulley 05, driving the first synchronous pulley 05 to rotate synchronously. The first lifting mechanism 03 is threadedly connected to the first lead screw 10 located between the second fixing plate 072 and the third fixing plate 073. When the first lead screw 10 rotates, the first lifting mechanism 03 that is threadedly engaged with it will generate displacement along the axial direction of the lead screw. Since the second fixing plate 072 and the third fixing plate 073 limit the degrees of freedom of the first lifting mechanism 03 in other directions, the first lifting mechanism 03 can only move linearly along the axial direction of the lead screw, thereby driving the welding torch 01 connected to the first lifting mechanism 03 to achieve precise position adjustment in the vertical direction, meeting the diverse requirements of different welding processes for the position of components.

[0036] Optionally, as Figures 1 to 3As shown in the figure, the first lifting mechanism 03 includes a first lead screw nut 031, a first slider 032 and a first slide plate 033. A first slide rail 074 parallel to the first lead screw 10 is provided between the second fixing plate 072 and the third fixing plate 073. The first lead screw nut 031 is sleeved on the first lead screw 10. The first slide plate 033 is connected to the first lead screw nut 031 through the first slider 032. The first slider 032 is slidably connected to the first slide rail 074. The welding torch 01 is fixed to the side of the first slide plate 033 away from the first lead screw 10.

[0037] In this alternative embodiment, the first lifting mechanism 03, as a key part for realizing the vertical position adjustment of the welding torch 01, is composed of a first lead screw nut 031, a first slider 032 and a first slide plate 033. Between the second fixing plate 072 and the third fixing plate 073, a first slide rail 074 parallel to the first lead screw 10 is installed. The setting of the first slide rail 074 provides precise guidance for the movement of the first lifting mechanism 03. The first lead screw nut 031 is sleeved on the first lead screw 10. When the first lead screw 10 rotates, according to the principle of the lead screw nut pair, the lead screw nut will move along the axial direction of the lead screw. The first slide plate 033 is connected to the first lead screw nut 031 through the first slider 032, thereby transmitting the linear motion of the lead screw nut to the first slide plate 033. At the same time, through the sliding connection between the first slider 032 and the first slide rail 074, the first slide rail 074 plays a constraining role on the first slider 032, restricting it to move only along the direction of the slide rail, so as to ensure that the first slide plate 033 and the components connected thereto can only perform linear motion in the direction parallel to the first lead screw 10, avoiding displacement deviation in other directions. The welding torch 01 is fixed to the side of the first slide plate 033 away from the first lead screw 10. When the rotation of the first lead screw 10 causes the first lead screw nut 031 to move, it drives the connected first slide plate 033 and the welding torch 01 to perform vertical position adjustment along the direction of the first slide rail 074, so that the welding torch 01 can be accurately positioned at the positions required by different welding processes, effectively improving the accuracy and stability of the welding operation and meeting the requirements for the position adjustment of the welding torch 01 in various welding tasks.

[0038] Optionally, as Figures 1 to 3 shown, the welding device further includes a motor 12 and a motor seat 13. The motor 12 is connected to the side of the second baffle away from the first baffle through the motor seat 13. The first synchronous pulley 05 is arranged in the motor seat 13. The transmission shaft of the motor 12 and the first lead screw 10 are connected in the motor seat 13.

[0039] Optionally, as Figures 1 to 3 shown, the welding device further includes a coupling 18. The transmission shaft of the motor 12 and the first lead screw 10 are connected through the coupling 18.

[0040] Specifically, the wire feeding device is powered by the motor 12 and the motor base 13. The motor 12 is firmly connected to the side of the second baffle away from the first baffle through the motor base 13, that is, the motor 12 is fixed on the upper surface of the second baffle through the motor base 13. The motor base 13 can be set as a central control structure with four struts. The motor base 13 of this central control structure not only provides installation support for the motor 12, but also accommodates the first lead screw 10 located above the second baffle and the first synchronous pulley 05 sleeved on the first lead screw 10 through its internal hollow structure, so that the transmission shaft of the motor 12 and the first lead screw 10 can be connected in the cavity inside the motor base 13. When the motor 12 starts to operate, the power generated by it is transmitted to the first lead screw 10 through the transmission shaft. Since the first synchronous pulley 05 is sleeved at one end of the first lead screw 10, during the power transmission process, the rotation of the first lead screw 10 will drive the first synchronous pulley 05 to rotate synchronously, and the first synchronous pulley 05 is connected to the second synchronous pulley 06 through a belt, and then the power is transmitted to the second lead screw 11 in sequence. In this way, the power generated by the motor 12 can be efficiently and stably conducted in the whole device, driving the first lead screw 10 and the second lead screw 11 to rotate synchronously, prompting the first lifting mechanism 03 connected thereto to drive the welding torch 01 and the second lifting mechanism 04 to drive the wire feeding mechanism 02 to make precise position adjustments according to the design requirements, meeting the requirements of different welding processes for the relative positions and movements of the welding torch 01 and the wire feeding mechanism 02, and ensuring the smooth progress of the welding work and the improvement of the welding quality.

[0041] Optionally, as Figures 1 to 3 shown, the welding device further includes a first bearing 14 and a second bearing 15. The first lead screw 10 is rotatably connected to the second fixing plate 072 through the first bearing 14 provided on the second fixing plate 072, and the first lead screw 10 is rotatably connected to the third fixing plate 073 through the second bearing 15 provided on the third fixing plate 073.

[0042] In this alternative embodiment, the first lead screw 10 is rotatably connected to the second fixing plate 072 through a first bearing 14 provided on the second fixing plate 072. The inner ring of the first bearing 14 is tightly sleeved on the first lead screw 10, and the outer ring is firmly installed in a preset mounting hole position of the second fixing plate 072, thereby reducing the frictional resistance between the first lead screw 10 and the second fixing plate 072 when the first lead screw 10 rotates, enabling the first lead screw 10 to rotate flexibly and smoothly on the second fixing plate 072. At the same time, the first bearing 14 can also effectively bear the radial force generated during the rotation of the first lead screw 10, ensuring that the first lead screw 10 does not undergo radial displacement during rotation and maintaining the stability and accuracy of its rotation. Similarly, the first lead screw 10 is rotatably connected to the third fixing plate 073 through a second bearing 15 provided on the third fixing plate 073. The second bearing 15, in the same manner, has its inner ring sleeved on the first lead screw 10 and its outer ring fixed to the third fixing plate 073, providing stable support on the other side for the first lead screw 10. The second bearing 15 can also reduce the friction between the first lead screw 10 and the third fixing plate 073. While bearing the radial force, it cooperates with the first bearing 14 to ensure that the first lead screw 10 maintains good coaxiality throughout the rotation process, avoiding tilting or wobbling, thereby ensuring that the first lead screw 10 can stably and efficiently convert the power transmitted by the motor 12 into the linear motion of the first lifting mechanism 03, ultimately achieving precise adjustment of the position of the welding torch 01 and meeting the strict requirements of the welding process.

[0043] Optionally, as Figures 1 to 3 shown, the second base 08 includes a fourth fixing plate 081, a fifth fixing plate 082, and a sixth fixing plate 083. One side of the fourth fixing plate 081 is fixedly connected to the mounting plate 09. The fifth fixing plate 082 and the sixth fixing plate 083 are respectively provided at opposite ends of the fourth fixing plate 081. One end of the second lead screw 11 passes through the fifth fixing plate 082 and is rotatably connected to the sixth fixing plate 083. A second synchronous pulley 06 is sleeved on the second lead screw 11 on the side of the fifth fixing plate 082 away from the sixth fixing plate 083. The second lifting mechanism 04 is threadedly connected to the second lead screw 11 between the fifth fixing plate 082 and the sixth fixing plate 083.

[0044] In this optional embodiment, the second base 08 is composed of a fourth fixing plate 081, a fifth fixing plate 082 and a sixth fixing plate 083, and its structural design is similar to that of the first base 07, which provides important support for the stable operation of the entire welding device. One side of the fourth fixing plate 081 is firmly connected to the mounting plate 09, and the connection method may be bolted, welded, etc., to ensure that the second base 08 is firmly fixed on the mounting plate 09, and no displacement will occur when the device is running, providing a solid foundation for the installation and operation of subsequent components. The opposite ends of the fourth fixing plate 081 are respectively provided with a vertically connected fifth fixing plate 082 and a sixth fixing plate 083, that is, the fifth fixing plate 082 is vertically connected to the upper end of the fourth fixing plate 081, and the sixth fixing plate 083 is vertically connected to the lower end of the fourth fixing plate 081, thereby forming a stable frame, enhancing the overall strength and stability of the second base 08. One end of the second screw rod 11 passes through the fifth fixing plate 082 and is rotatably connected to the sixth fixing plate 083. This connection method allows the second screw rod 11 to rotate freely in the second base 08, and the fifth fixed plate 082 and the sixth fixed plate 083 provide reliable support for the screw rod, effectively preventing radial runout or axial movement of the screw rod during rotation, and ensuring the stability and accuracy of the screw rod rotation. The second screw rod 11 is located on the side of the fifth fixed plate 082 away from the sixth fixed plate 083, and is sleeved with a second synchronous wheel 06. The second synchronous wheel 06 is closely connected to the second screw rod 11. When external power is transmitted to the second synchronous wheel 06 through the wheel belt, it can efficiently drive the second screw rod 11 to rotate synchronously. The second lifting mechanism 04 and the second screw rod 11 between the fifth fixed plate 082 and the sixth fixed plate 083 are connected by threads. When the second screw 11 rotates driven by the second synchronous wheel 06, based on the principle of the screw nut pair, the second lifting mechanism 04 that matches the thread of the second screw 11 will be displaced along the axial direction of the screw, thereby driving the wire feeding mechanism 02 connected to the second lifting mechanism 04 to make precise position adjustments in the vertical direction, so as to meet the diverse requirements for the position of the wire feeding mechanism 02 in the welding process, ensure the accuracy and stability of the wire feeding process, and thus improve the welding quality. It should be noted that the principle of the screw nut pair is based on the spiral transmission mechanism. The surface of the screw has a spiral thread, and the inner surface of the nut also has a matching thread. When the screw rotates, the nut will move linearly along the axial direction of the screw under the action of the thread. This process is like when you turn a screw, the screw will go deeper or withdraw along the screw hole.

[0045] Alternatively, if Figures 1 to 3As shown in the figure, the second lifting mechanism 04 includes a second lead screw nut 041, a second slider 042, and a second slide plate 043. A second slide rail 084 parallel to the second lead screw 11 is provided between the fourth fixed plate 081 and the fifth fixed plate 082. The second lead screw nut 041 is sleeved on the second lead screw 11. The second slide plate 043 is connected to the second lead screw nut 041 through the second slider 042. The second slider 042 is slidably connected to the second slide rail 084. The wire feeding mechanism 02 is provided on the side of the second slide plate 043 away from the second lead screw 11.

[0046] In this alternative embodiment, the second lifting mechanism 04 includes a second lead screw nut 041, a second slider 042, and a second slide plate 043. A second slide rail 084 parallel to the second lead screw 11 is provided between the fourth fixed plate 081 and the fifth fixed plate 082. The second slide rail 084 provides precise guidance for the movement of the second lifting mechanism 04, ensuring that it will not deviate during operation. The second lead screw nut 041 is sleeved on the second lead screw 11. When the second lead screw 11 starts to rotate driven by the second synchronous pulley 06, according to the principle of the lead screw nut pair, the second lead screw nut 041 sleeved on the lead screw will generate displacement along the axial direction of the lead screw. The second slide plate 043 is connected to the second lead screw nut 041 through the second slider 042, enabling the linear motion of the second lead screw nut 041 to be smoothly transmitted to the second slide plate 043. At the same time, the second slider 042 is slidably connected to the second slide rail 084, and the second slide rail 084 plays a constraining role on the second slider 042, restricting its movement to only along the direction of the slide rail. In this way, the second slide plate 043 and the wire feeding mechanism 02 connected thereto can only perform linear motion in a direction parallel to the second lead screw 11, avoiding displacement deviations in other directions. The wire feeding mechanism 02 is provided on the side of the second slide plate 043 away from the second lead screw 11. When the second lead screw 11 rotates to drive the second lead screw nut 041 to move, it drives the connected second slide plate 043 and the wire feeding mechanism 02 to adjust the vertical position along the direction of the second slide rail 084, enabling the wire feeding mechanism 02 to be accurately positioned at the positions required by different welding processes, effectively improving the accuracy and stability of the wire feeding operation, meeting the strict requirements for the position adjustment of the wire feeding mechanism 02 in various welding tasks, and improving the welding quality.

[0047] Optionally, as Figures 1 to 3 shown, the welding device further includes a third bearing 16 and a fourth bearing 17. The second lead screw 11 is rotatably connected to the fifth fixed plate 082 through the third bearing 16 provided on the fifth fixed plate 082. The second lead screw 11 is rotatably connected to the third fixed plate 073 through the fourth bearing 17 provided on the sixth fixed plate 083.

[0048] In this alternative embodiment, the second lead screw 11 is rotatably connected to the fifth fixing plate 082 through a third bearing 16 provided on the fifth fixing plate 082. The inner ring of the third bearing 16 is sleeved on the second lead screw 11, and the outer ring is fixed to the corresponding mounting hole position of the fifth fixing plate 082, thereby reducing the frictional resistance between the second lead screw 11 and the fifth fixing plate 082 when the second lead screw 11 rotates, enabling the second lead screw 11 to rotate flexibly, effectively bearing the radial force during the rotation of the lead screw at the same time, preventing the second lead screw 11 from having radial displacement, and ensuring its rotational stability and accuracy. Similarly, the second lead screw 11 is rotatably connected to the sixth fixing plate 083 through a fourth bearing 17 provided on the sixth fixing plate 083. The fourth bearing 17 is in the same way, with the inner ring closely fitting the second lead screw 11 and the outer ring stably installed on the sixth fixing plate 083, providing stable support for the second lead screw 11 on the other side. The fourth bearing 17 can also reduce friction and work together with the third bearing 16 to ensure that the second lead screw 11 maintains good coaxiality during the entire rotation process, avoiding tilting or shaking. In this way, the second lead screw 11 can stably and efficiently convert power into the linear motion of the second lifting mechanism 04, driving the wire feeding mechanism 02 to accurately adjust its position, meeting the stringent requirements of various welding processes for the position of the wire feeding mechanism 02, and effectively guaranteeing the welding quality.

[0049] Optionally, as Figures 1 to 3 shown, the wire feeding mechanism 02 includes a connecting rod 021 and a clamping portion 022. The side arm of the connecting rod 021 is connected to the side of the second slide plate 043 away from the second lead screw 11. The lower end of the connecting rod 021 is rotatably connected to the clamping portion 022, and the clamping portion 022 is used for clamping the welding wire 20.

[0050] In this alternative embodiment, the wire feeding mechanism 02 is mainly composed of a connecting rod 021 and a clamping part 022, and is connected to the second slide plate 043 in the second lifting mechanism 04. The connecting rod 021 serves as the connection hub of the wire feeding mechanism 02, and its side arm is connected to the side of the second slide plate 043 away from the second lead screw 11 by reliable means such as welding or bolt connection. This connection ensures that the connecting rod 021 can work stably with the second slide plate 043. When the second lifting mechanism 04 moves in a straight line in the vertical direction along the second slide rail 084 driven by the second lead screw 11, the connecting rod 021 can move precisely accordingly, thereby driving the entire wire feeding mechanism 02 to reach the position required by the welding process. The lower end of the connecting rod 021 is connected to the clamping part 022 by a rotational connection. Common rotational connection methods include pin shaft connection, etc. This rotational connection gives the clamping part 022 a certain degree of freedom of movement, enabling the clamping part 022 to flexibly adjust its angle during the movement following the connecting rod 021 according to the actual welding requirements, so as to better adapt to the wire feeding direction of the welding wire 20 in different welding scenarios. The main function of the clamping part 022 is to clamp the welding wire 20. Its internal structure design usually adopts adjustable jaws or similar structures, which can firmly clamp the welding wire 20 to ensure that the welding wire 20 does not loosen or slip during the wire feeding process. At the same time, the clamping force of the clamping part 022 can be appropriately adjusted according to factors such as the material and diameter of the welding wire 20 to meet the feeding requirements of different types of welding wires 20. During the welding operation, as the second lifting mechanism 04 drives the connecting rod 021 and the clamping part 022 to move to a suitable position, the welding wire 20 clamped by the clamping part 022 can be accurately sent to the welding area, providing a stable metal filling material for the welding process, thereby ensuring the welding quality and welding effect.

[0051] Optionally, as Figures 1 to 3 shown, the clamping part 022 includes a clamping plate and bolts. Both ends of the clamping plate are rotationally connected to the lower end of the connecting rod 021 by the bolts, and the welding wire 20 passes through the ring formed by the enclosure of the clamping plate.

[0052] In this alternative embodiment, the clamping portion 022 includes a clamping plate and bolts. The two ends of the clamping plate are rotatably connected to the lower end of the connecting rod 021 by means of bolts. This connection form not only ensures the stable connection between the clamping plate and the connecting rod 021, but also has a certain degree of flexibility. Since it is connected by bolts, in actual operation, if there is an adjustment requirement, the angle of the clamping plate can be finely adjusted by turning the bolts, so that the clamping portion 022 can better meet the requirements for the conveying direction of the welding wire 20 in different welding scenarios. The clamping plates enclose a circular ring structure, and the welding wire 20 passes through it. During the wire feeding process, the circular ring formed by the clamping plates plays a role in restraining and guiding the welding wire 20, ensuring that the welding wire 20 can be stably conveyed along the established path to the welding area. At the same time, the clamping plates connected by bolts can adjust the clamping force on the welding wire 20 by adjusting the tightness of the bolts according to the characteristics of the welding wire 20 such as material and diameter, which can not only ensure that the welding wire 20 will not loosen and slip during the conveying process, but also will not damage the welding wire 20 due to excessive clamping, thereby providing a stable and reliable metal filling material for the welding process and effectively guaranteeing the welding quality and welding effect.

[0053] Although the present invention is disclosed as above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the scope of protection of the present invention.

Claims

1. A welding device, characterized in that: The invention comprises a welding gun (01), a wire feeding mechanism (02), a first lifting mechanism (03), a second lifting mechanism (04), a first synchronous wheel (05), a second synchronous wheel (06), a first base (07), a second base (08) and a mounting plate (09), as well as a first screw rod (10) and a second screw rod (11) having opposite thread directions, wherein the first base (07) and the second base (08) are respectively fixed on the mounting plate (09), the first base (07) is rotatably provided with the first screw rod (10), the welding gun (01) is connected to the first screw rod (10) via the first lifting mechanism (03), and the first lifting mechanism (03) is configured such that when the first screw rod (10) rotates, the first screw rod (11) is rotated. The first lifting mechanism (03) moves along the axial direction of the first screw rod (10); the second screw rod (11) is rotatably arranged on the second base (08); the wire feeding mechanism (02) is connected to the second screw rod (11) through the second lifting mechanism (04); the second lifting mechanism (04) is configured so that when the second screw rod (11) rotates, the second screw rod (11) rotating mechanism runs along the axial direction of the second screw rod (11); one end of the first screw rod (10) is sleeved with the first synchronous wheel (05); one end of the second screw rod (11) is sleeved with the second synchronous wheel (06); the first synchronous wheel (05) and the second synchronous wheel (06) are connected by a belt.

2. The welding device according to claim 1, characterized in that: The first base (07) comprises a first fixing plate (071), a second fixing plate (072) and a third fixing plate (073); one side of the first fixing plate (071) is fixedly connected to the mounting plate (09); the second fixing plate (072) and the third fixing plate (073) are respectively arranged at opposite ends of the first fixing plate (071); one end of the first screw rod (10) passes through the second fixing plate (072) and is rotatably connected to the third fixing plate (073); the first screw rod (10) is located on a side of the second fixing plate (072) away from the third fixing plate (073) and is sleeved with a first synchronous wheel (05); the first lifting mechanism (03) is threadedly connected to the first screw rod (10) between the second fixing plate (072) and the third fixing plate (073).

3. The welding device according to claim 2, characterized in that: The first lifting mechanism (03) comprises a first screw nut (031), a first slider (032) and a first slide plate (033); a first slide rail (074) parallel to the first screw (10) is arranged between the second fixed plate (072) and the third fixed plate (073); the first screw nut (031) is sleeved on the first screw (10); the first slide plate (033) is connected to the first screw nut (031) via the first slider (032); the first slider (032) is slidably connected to the first slide rail (074); and the welding gun (01) is fixed on a side of the first slide plate (033) away from the first screw (10).

4. The welding device according to claim 2, characterized in that: It also includes a motor (12) and a motor seat (13), wherein the motor (12) is connected to a side of the second baffle away from the first baffle via the motor seat (13), the first synchronous wheel (05) is arranged in the motor seat (13), and the transmission shaft of the motor (12) and the first screw rod (10) are connected in the motor seat (13).

5. The welding device according to claim 4, characterized in that: It also includes a coupling (18), through which the transmission shaft of the motor (12) and the first screw rod (10) are connected.

6. The welding device according to claim 2, characterized in that: It also includes a first bearing (14) and a second bearing (15), wherein the first screw rod (10) is rotatably connected to the second fixed plate (072) via the first bearing (14) arranged on the second fixed plate (072), and the first screw rod (10) is rotatably connected to the third fixed plate (073) via the second bearing (15) arranged on the third fixed plate (073).

7. The welding device according to claim 1, characterized in that: The second base (08) comprises a fourth fixing plate (081), a fifth fixing plate (082) and a sixth fixing plate (083); one side of the fourth fixing plate (081) is fixedly connected to the mounting plate (09); the fifth fixing plate (082) and the sixth fixing plate (083) are respectively arranged at opposite ends of the fourth fixing plate (081); one end of the second screw rod (11) passes through the fifth fixing plate (082) and is rotatably connected to the sixth fixing plate (083); the second screw rod (11) is located on a side of the fifth fixing plate (082) away from the sixth fixing plate (083) and is sleeved with a second synchronous wheel (06); the second lifting mechanism (04) is threadedly connected to the second screw rod (11) between the fifth fixing plate (082) and the sixth fixing plate (083).

8. The welding device according to claim 7, characterized in that: The second lifting mechanism (04) comprises a second screw nut (041), a second slider (042) and a second slide plate (043); a second slide rail (084) parallel to the second screw (11) is arranged between the fourth fixed plate (081) and the fifth fixed plate (082); the second screw nut (041) is sleeved on the second screw (11); the second slide plate (043) is connected to the second screw nut (041) via the second slider (042); the second slider (042) is slidably connected to the second slide rail (084); and the wire feeding mechanism (02) is arranged on a side of the second slide plate (043) away from the second screw (11).

9. The welding device according to claim 7, characterized in that: It also includes a third bearing (16) and a fourth bearing (17); the second screw rod (11) is rotatably connected to the fifth fixed plate (082) via the third bearing (16) arranged on the fifth fixed plate (082); and the second screw rod (11) is rotatably connected to the third fixed plate (073) via the fourth bearing (17) arranged on the sixth fixed plate (083).

10. The welding device according to claim 8, characterized in that The wire feeding mechanism (02) comprises a connecting rod (021) and a clamping portion (022), the side arm of the connecting rod (021) is connected to the side of the second slide plate (043) away from the second screw rod (11), the lower end of the connecting rod (021) is rotatably connected to the clamping portion (022), and the clamping portion (022) is used to clamp the welding wire (20).

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