A quick-switching welding mode adjustment robot

Abstract

This utility model belongs to the field of welding technology and discloses an adjustment robot for quickly switching welding modes. It includes a base, with a robotic arm fixedly connected to the upper end of the base, and a welding mechanism fixedly installed on the outside of the robotic arm. Through a uniquely designed switching component, utilizing the cooperation between a steel ball inside the quick-connect box's perforated tube and a slot in the quick-connect box, as well as the control of the steel ball's extension and retraction by a spring and piston tube, the welding torch assembly can be quickly engaged and disengaged. Compared to the complex and time-consuming welding torch replacement structure of existing welding robots, this adjustment robot can complete the welding torch replacement in a short time, greatly shortening the welding mode switching time and significantly improving production efficiency when frequently switching welding modes in welding special items. Through the inflation component, the stability of the connection after welding torch replacement can be ensured during welding mode switching, effectively preventing the welding torch from falling off during welding, thus improving the practicality of the welding robot.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, specifically to an adjustment robot that can quickly switch welding modes. Background Technology

[0002] Welding robots are industrial robots that achieve automated welding operations through precise control via preset programs. They play an irreplaceable role in fields such as automobile manufacturing, construction machinery, and aerospace.

[0003] In the actual operation of a robotic welding system, automatic switching of welding modes is a key link to ensure the flexibility and adaptability of welding operations. This process usually involves the coordinated adjustment of multiple dimensions such as welding process, parameters, welding torch type and motion trajectory. However, as modern industry continues to increase its requirements for welding quality and production efficiency, when welding some special items (such as parts with complex structures, special materials or high precision requirements), a single welding method is often insufficient to meet the needs, and multiple different welding methods need to be used frequently. This requires welding robots to have the ability to quickly change welding modes in order to adapt to diverse welding tasks and improve overall production efficiency.

[0004] However, the welding robots currently available on the market cannot quickly change the welding torch when changing modes. They lack efficient and fast positioning and locking devices, which makes the welding torch replacement time-consuming and thus results in low efficiency in switching welding modes.

[0005] Based on this, this utility model designs an adjustment robot that can quickly switch welding modes to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides an adjustment robot for quickly switching welding modes.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An adjustable robot for rapidly switching welding modes includes a base, a robotic arm fixedly connected to the upper end of the base, a welding mechanism fixedly installed on the outside of the robotic arm, the welding mechanism including multiple hoses, an inflation component fixedly connected to the outer surfaces of the multiple hoses, a switching component fixedly connected to the outer surfaces of the multiple hoses, a connecting component fixedly connected to the switching component by bolts, and a welding torch component engaging with the outside of the switching component.

[0009] Furthermore, the inflation component includes a positioning block, the inner surface of which is fixedly connected to the outer surface of the robotic arm, an mounting plate fixedly connected to the upper end of the positioning block, two air pumps fixedly connected to the upper end of the mounting plate, an air outlet pipe fixedly connected to the front end of each of the two air pumps, an air extraction pipe fixedly connected to the front end of each of the two air pumps, and a solenoid valve provided on the outer surface of both the air outlet pipe and the outer surface of the air extraction pipe.

[0010] Furthermore, the connecting component includes a connecting ring, a connecting block is fixedly connected to the lower end of the connecting ring, and a connecting plate is fixedly connected to the lower end of the connecting block;

[0011] Furthermore, the switching assembly includes a quick-connect box 1, with a perforated tube fixedly connected to its lower end. Several steel balls are slidably connected to the inner cavity of the perforated tube. Air holes 1 and 2 are provided at both ends of the quick-connect box 1. Two connecting tubes are fixedly connected to both ends of the quick-connect box 1. A socket is fixedly connected to the rear end of the quick-connect box 1. The steel balls play a crucial positioning and locking role when switching welding torches. Air holes 1 and 2 are used for gas input and output, respectively, facilitating the connection or disconnection of quick-connect box 1 and quick-connect box 2.

[0012] Furthermore, the switching assembly also includes a spring, the upper end of which is fixedly connected to the top wall of the inner cavity of the quick-connect box, and the lower end of which is fixedly connected to a piston tube. The outer surface of the piston tube is slidably connected to the inner cavity of the quick-connect box, and the piston tube can slide up and down in the inner cavity of the quick-connect box. By adjusting the gas pressure, the movement of the piston tube can be controlled, and the extension and retraction of the steel ball can be adjusted to achieve rapid engagement and disengagement of the welding torch assembly.

[0013] Furthermore, the welding gun assembly includes a second quick-connect box, the inner cavity of which is provided with a slot, and the second quick-connect box is fixedly connected to a second connecting plate by bolts, and the lower end of the second connecting plate is fixedly connected to the welding gun body.

[0014] Furthermore, the quick-connect box is fixedly connected to the connecting plate by bolts, and the inner surface of the connecting ring is fixedly connected to the inside of the robotic arm;

[0015] Furthermore, the inner surface of the suction pipe is fixedly connected to the outer surface of the hose, the inner surface of the exhaust pipe is fixedly connected to the outer surface of the hose, and the inner surface of the connecting pipe is fixedly connected to the outer surface of the hose.

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] (1) This solution uses a uniquely designed switching component to utilize the cooperation between the steel ball in the first opening tube of the quick-connect box and the second slot of the quick-connect box, as well as the control of the extension and retraction of the steel ball by the spring and piston tube, to achieve the quick engagement and disengagement of the welding gun assembly. Compared with the complex and time-consuming welding gun replacement structure of the existing welding robot, this adjustment robot can complete the welding gun replacement in a short time, which greatly shortens the welding mode switching time, significantly improves the production efficiency when frequently switching welding modes in the welding of special items, and enhances the practicality of the welding robot.

[0018] (2) This solution, through the coordinated operation of two air pumps, air outlet pipe, air extraction pipe and solenoid valve in the air filling component, can ensure the stability of the connection after the welding gun is replaced when switching welding modes, and can effectively prevent the welding gun from falling off during the welding process.

[0019] (3) This solution adopts a modular design. The components, such as the inflation component, switching component, connecting component and welding gun component, are connected by bolts or snap-fit. The structure is clear. When a component fails, it can be quickly disassembled and replaced, reducing maintenance difficulty and cost. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the welding mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the inflatable component of this utility model;

[0024] Figure 4 This is a schematic diagram of the connection component of this utility model;

[0025] Figure 5 This is a schematic diagram of the switching component of this utility model;

[0026] Figure 6 This is a schematic diagram of the welding torch assembly of this utility model.

[0027] The labels in the diagram represent:

[0028] 1. Base; 2. Robotic arm; 3. Welding mechanism; 31. Hose; 32. Inflation assembly; 321. Positioning block; 322. Mounting plate; 323. Air pump; 324. Air outlet pipe; 325. Air extraction pipe; 326. Solenoid valve; 33. Switching assembly; 331. Quick-connect box one; 332. Opening pipe; 333. Steel ball; 334. Spring; 335. Piston pipe; 336. Air hole one; 337. Air hole two; 338. Connecting pipe; 339. Socket; 34. Connecting assembly; 341. Connecting ring; 342. Connecting block; 343. Connecting plate one; 35. Welding torch assembly; 351. Quick-connect box two; 352. Slot; 353. Connecting plate two; 354. Welding torch body. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-6 A rapid switching welding mode adjustment robot includes a base 1, a robotic arm 2 fixedly connected to the upper end of the base 1, a welding mechanism 3 fixedly installed on the outside of the robotic arm 2, the welding mechanism 3 includes multiple hoses 31, an inflation component 32 fixedly connected to the outer surface of the multiple hoses 31, a switching component 33 fixedly connected to the outer surface of the multiple hoses 31, a connecting component 34 fixedly connected to the switching component 33 by bolts, and a welding gun component 35 snapped onto the outside of the switching component 33.

[0032] Robotic arm 2 uses an ABBIRB6700 series industrial robot with 6 degrees of freedom, a maximum load of 150kg, and a repeatability of ±0.05mm. In automotive chassis welding, robotic arm 2 can quickly move the welding gun assembly 35 to the welding position according to a preset program. At the same time, during welding gun replacement, it can accurately grasp and install different types of welding gun assemblies 35, ensuring the efficient completion of welding tasks.

[0033] In this embodiment of the utility model, the welding robot is installed on the workstation via the base 1 for installation. The multi-axis movement of the robotic arm 2, in conjunction with the welding torch assembly 35, enables the welding robot to complete different welding tasks. The air inflation assembly 32, in conjunction with the switching assembly 33, controls the connection and separation of the switching assembly 33 and the welding torch assembly 35 by inflation and deflation. Different welding torch assemblies 35 can be selected for connection according to different welding requirements, thus completing the switching of different welding torches required in different welding modes.

[0034] In some embodiments, such as Figure 2-6 As shown, in a preferred embodiment of the present invention, the inflation component 32 includes a positioning block 321. The inner surface of the positioning block 321 is fixedly connected to the outer surface of the robotic arm 2. An mounting plate 322 is fixedly connected to the upper end of the positioning block 321. Two air pumps 323 are fixedly connected to the upper end of the mounting plate 322. The front ends of the two air pumps 323 are fixedly connected to and connected to an air outlet pipe 324. The inner surface of the air outlet pipe 324 is fixedly connected to the outer surface of the hose 31. The front ends of the two air pumps 323 are fixedly connected to and connected to an air extraction pipe 325. The inner surface of the air extraction pipe 325 is fixedly connected to the outer surface of the hose 31. Solenoid valves 326 are provided on the outer surfaces of the air outlet pipe 324 and the outer surfaces of the air extraction pipe 325.

[0035] The air pump 323 uses the SMC brand VP7-8F series air pump. This model of air pump has a high flow output capability, with a maximum exhaust volume of 280L / min, a pressure range of 0.1-0.7MPa, and a response time of less than 0.2 seconds. In MIG welding mode, the air pump 323 supplies air to the quick-connect box 331 at a pressure of 0.3MPa through the air outlet pipe 324, ensuring a stable connection between the welding torch assembly 35 and the switching assembly 33. When switching modes, it can quickly switch to the air extraction state, reducing the pressure inside the quick-connect box 331 to 0.05MPa within 1 second, thereby enabling rapid unlocking of the welding torch.

[0036] Solenoid valve 326 is a FESTO VUVG series solenoid valve, characterized by low power consumption and high switching frequency (up to 10Hz), operating voltage DC24V, and maximum pressure resistance of 1.0MPa. This solenoid valve can precisely control the gas path opening and closing. During welding mode switching, it works with air pump 323 to quickly open or close the outlet pipe 324 and the extraction pipe 325, ensuring stable regulation of gas flow and pressure.

[0037] The connecting component 34 includes a connecting ring 341, the inner surface of which is fixedly connected to the inside of the robotic arm 2, a connecting block 342 fixedly connected to the lower end of the connecting ring 341, and a connecting plate 343 fixedly connected to the lower end of the connecting block 342.

[0038] The switching component 33 includes a quick-connect box 331, which is fixedly connected to a connecting plate 343 by bolts. A perforated tube 332 is fixedly connected to the lower end of the quick-connect box 331. Several steel balls 333 are slidably connected to the inner cavity of the perforated tube 332. Air holes 336 and 337 are opened at both ends of the quick-connect box 331. Two connecting tubes 338 are fixedly connected to both ends of the quick-connect box 331. The inner surface of the connecting tubes 338 is fixedly connected to the outer surface of the hose 31. A socket 339 is fixedly connected to the rear end of the quick-connect box 331.

[0039] The switching assembly 33 also includes a spring 334. The upper end of the spring 334 is fixedly connected to the top wall of the inner cavity of the quick-connect box 331, and the lower end of the spring 334 is fixedly connected to a piston tube 335. The outer surface of the piston tube 335 is slidably connected to the inner cavity of the quick-connect box 331.

[0040] The welding torch assembly 35 includes a quick-connect box 351, the inner cavity of which has a slot 352. The quick-connect box 351 is fixedly connected to a connecting plate 353 by bolts, and the lower end of the connecting plate 353 is fixedly connected to the welding torch body 354.

[0041] In this embodiment of the present invention, when welding is required, a suitable welding torch assembly 35 is first selected according to the welding task. Then, quick-connect box one 331 is aligned with quick-connect box two 351, and quick-connect box one 331 is inserted into quick-connect box two 351. The steel ball 333 in the perforated tube 332 will shrink inward under the pressure of quick-connect box two 351. At this time, although the two are in close contact, the connection is unstable. It is necessary to start two air pumps 323 and control them to be in the inflation state. Control the two solenoid valves 326 connected to the two air outlets 324 to open. The air pumps 323 fill the quick-connect box one 331 with gas through the hose 31 and the connecting tube 338 from the two air holes one 336. The gas pushes the piston tube 335 to move downward, pushing the steel ball 333 outward. The steel ball 333 pops out and is stuck into the slot 352 under the action of the piston tube 335, completing the quick engagement connection between the welding torch assembly 35 and the switching assembly 33.

[0042] During this process, the continuous injection of gas increases the amount of gas in the quick-connect box 331, allowing the piston tube 335 to slide downwards along the inner cavity of the quick-connect box 331 and forcing the spring 334 to deform.

[0043] When switching welding modes and replacing the welding torch assembly 35, start the two air pumps 323 and control them to be in suction mode. Control the two solenoid valves 326 connected to the two suction pipes 325 to open. Through the hose 31 and connecting pipe 338, draw gas from the quick-connect box 331 through the two air holes 337. This works together to reduce the internal pressure of the quick-connect box 331, allowing the piston tube 335 to move upward under the action of gas pressure change and spring 334 restoring its deformation. After the piston tube 335 moves upward, the steel ball 333 is no longer restricted and will retract into the opening tube 332, releasing the locking between it and the quick-connect box 351. At this time, the welding torch assembly 35 can be easily separated from the switching assembly 33. Then, select the new welding torch assembly 35 and repeat the above locking steps to quickly complete the switching of welding modes and continue welding operations.

[0044] In the welding of automotive chassis structural components, gas metal arc welding (MIG welding) is used alternately for thick plate splicing and tungsten inert gas welding (TIG welding) for precision component spot welding. Initially, robotic arm 2 needs to be equipped with MIG welding torch assembly 35 (welding torch body 354 is a gas metal arc welding torch). It is locked with quick-connect box 1 331 and switching assembly 33. Steel ball 333 is inserted into slot 352 of quick-connect box 2 351. Air pump 323 maintains the air pressure in quick-connect box 1 331 at 0.3MPa through air outlet pipe 324 to ensure stable connection.

[0045] When switching to TIG welding mode is required, robotic arm 2 moves to the welding torch replacement station, air pump 323 switches to suction mode, solenoid valve 326 of suction pipe 325 opens, and the air pressure in quick-connect box 1 331 drops to 0.05MPa within 1.2 seconds. Piston tube 335 moves upward under the action of spring 334, steel ball 333 retracts into opening tube 332, unlocking the old welding torch. Robotic arm 2 releases the old welding torch to the storage rack, moves to the TIG welding torch storage position, grabs TIG welding torch assembly 35 (welding torch body 354 is a tungsten electrode welding torch), quick-connect box 1 331 is inserted into quick-connect box 2 351, air pump 323 switches to inflation mode, and the air pressure rises to 0.25MPa within 0.8 seconds. Steel ball 333 pops out and engages, completing the locking of the new welding torch.

[0046] It should be noted that the welding torch assembly 35 in this utility model can be of various styles, specifically in the different welding torch body 354 fixed below the connecting plate 2 353. The welding torch body 354 can be a consumable electrode welding torch, a tungsten electrode welding torch, an electric arc welding torch, a laser head, a resistance spot welding torch, and other different welding torches.

[0047] It should be noted that the air pump 323 and solenoid valve 326 in this utility model are powered by a power source and controlled by a controller.

[0048] It should be noted that the specific installation methods, circuit connection methods, and control methods of the air pump 323 and solenoid valve 326 in this utility model are all conventional designs, and will not be described in detail in this utility model.

[0049] Working principle:

[0050] Before welding, use bolts to connect quick-connect box 331 to connecting plate 343. When welding is required, first select the appropriate welding torch assembly 35 according to the welding task. Using the robotic arm 2, control quick-connect box 331 to align with quick-connect box 351, and insert quick-connect box 331 into quick-connect box 351 under the action of the robotic arm 2. The steel ball 333 in the perforated tube 332 will retract inward under the pressure of quick-connect box 351. At this time, although the two are in close contact, the connection is unstable. It is necessary to start two air pumps 323 and control them to be in the inflation state, and control the two solenoid valves 326 connected to the two air outlet pipes 324 to open. The air pumps 323 inject gas into the quick-connect box 331 through the two air holes 336 via the hose 31 and the connecting pipe 338. The gas pushes the piston tube 335 to move downward, pushing the steel ball 333 outward. Under the action of the piston tube 335, the steel ball 333 pops out and is stuck into the slot 352, completing the quick engagement connection between the welding torch assembly 35 and the switching assembly 33.

[0051] When it is necessary to switch welding modes and replace the welding torch assembly 35, start the two air pumps 323 and control them to be in the suction state. Control the two solenoid valves 326 connected to the two suction pipes 325 to open. Through the hose 31 and connecting pipe 338, draw gas from the quick-connect box 331 through the two air holes 337. This works together to reduce the internal pressure of the quick-connect box 331, allowing the piston tube 335 to move upward under the action of gas pressure change and spring 334 restoring its deformation. After the piston tube 335 moves upward, the steel ball 333 is no longer restricted and will retract into the opening tube 332, releasing the locking between it and the quick-connect box 351. At this time, the welding torch assembly 35 can be easily separated from the switching assembly 33. Then, using the operation of the robotic arm 2, move the quick-connect box 331 above the quick-connect box 351 of the welding torch assembly 35 to be replaced. Repeat the above locking and connection steps to quickly complete the switching of welding modes and continue welding operations.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustment robot for rapidly switching welding modes, comprising a base (1), characterized in that: A robotic arm (2) is fixedly connected to the upper end of the base (1). A welding mechanism (3) is fixedly installed on the outside of the robotic arm (2). The welding mechanism (3) includes multiple hoses (31). An inflation assembly (32) is fixedly connected to the outer surface of the multiple hoses (31). A switching assembly (33) is fixedly connected to the outer surface of the multiple hoses (31). A connecting assembly (34) is fixedly connected to the switching assembly (33) by bolts. A welding gun assembly (35) is snapped onto the outside of the switching assembly (33).

2. The adjustment robot for rapidly switching welding modes according to claim 1, characterized in that: The inflation component (32) includes a positioning block (321), the inner surface of which is fixedly connected to the outer surface of the robotic arm (2), a mounting plate (322) is fixedly connected to the upper end of the positioning block (321), two air pumps (323) are fixedly connected to the upper end of the mounting plate (322), the front ends of the two air pumps (323) are fixedly connected to and connected to an air outlet pipe (324), the front ends of the two air pumps (323) are fixedly connected to and connected to an air extraction pipe (325), and a solenoid valve (326) is provided on the outer surface of the air outlet pipe (324) and the outer surface of the air extraction pipe (325).

3. The adjustment robot for rapidly switching welding modes according to claim 1, characterized in that: The connecting component (34) includes a connecting ring (341), a connecting block (342) is fixedly connected to the lower end of the connecting ring (341), and a connecting plate (343) is fixedly connected to the lower end of the connecting block (342).

4. The adjustment robot for rapidly switching welding modes according to claim 2, characterized in that: The switching component (33) includes a quick-connect box (331), with a perforated tube (332) fixedly connected to the lower end of the quick-connect box (331). Several steel balls (333) are slidably connected to the inner cavity of the perforated tube (332). Air holes (336) are provided at both the left and right ends of the quick-connect box (331). Air holes (337) are provided at both the left and right ends of the quick-connect box (331). Two connecting tubes (338) are fixedly connected to both the left and right ends of the quick-connect box (331). A socket (339) is fixedly connected to the rear end of the quick-connect box (331).

5. The adjustment robot for rapidly switching welding modes according to claim 3, characterized in that: The switching assembly (33) also includes a spring (334), the upper end of which is fixedly connected to the top wall of the inner cavity of the quick-connect box (331), and the lower end of which is fixedly connected to a piston tube (335), the outer surface of which is slidably connected to the inner cavity of the quick-connect box (331).

6. The adjustment robot for rapidly switching welding modes according to claim 1, characterized in that: The welding torch assembly (35) includes a quick-connect box two (351), the quick-connect box two (351) has a slot (352) in its inner cavity, the quick-connect box two (351) is fixedly connected to a connecting plate two (353) by bolts, and the welding torch body (354) is fixedly connected to the lower end of the connecting plate two (353).

7. The adjustment robot for rapidly switching welding modes according to claim 5, characterized in that: The quick-connect box (331) is fixedly connected to the connecting plate (343) by bolts, and the inner surface of the connecting ring (341) is fixedly connected to the inside of the robotic arm (2).

8. The adjustment robot for rapidly switching welding modes according to claim 4, characterized in that: The inner surface of the suction pipe (325) is fixedly connected to the outer surface of the hose (31), the inner surface of the exhaust pipe (324) is fixedly connected to the outer surface of the hose (31), and the inner surface of the connecting pipe (338) is fixedly connected to the outer surface of the hose (31).

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