Multi-shaft welding mechanical arm for chassis forming machining

Abstract

The invention belongs to the technical field of welding mechanical arms, and discloses a multi-shaft welding mechanical arm for chassis forming machining, which comprises a welding mechanical arm body, a wire supply mechanism and a wire feeding mechanism, the wire supply mechanism is installed below the back of the welding mechanical arm body, and the wire feeding mechanism is arranged on the welding mechanical arm body. The wire supply mechanism comprises a wire supply box, the wire supply box is connected with the welding mechanical arm body, a plurality of wire supply bins are arranged in the wire supply box, hexagonal sleeve rods driven by a motor are movably installed in the wire supply bins, the hexagonal sleeve rods are sleeved with wire reels, a dustproof cover is hinged to the upper portion of the wire supply box, and the dustproof cover is hinged to the lower portion of the wire supply box. And one side of the wire supply box is connected with wire feeding hoses I of which the number is the same as that of the wire supply bins. Therefore, welding wires of different models can be automatically replaced, the application range of the multi-axis welding mechanical arm is widened, manual operation is not needed, and the working effect and the wire replacing efficiency of the multi-axis welding mechanical arm are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding mechanical arms, in particular to a multi-axis welding mechanical arm for chassis forming processing. Background Art

[0002] Multi-axis welding robotic arms are used in the processing of automobile chassis. Existing multi-axis welding robotic arms usually use laser welding technology. Welding fillers are required in some welding scenarios. At this time, laser welding needs to increase welding wire filling. At present, welding wire is usually supplied by a wire reel in conjunction with a wire feeder. However, different welding wire types are used for welding different workpieces. Traditional multi-axis welding robotic arms automatically switch between different types of welding wires according to the welding scenarios. Usually, manual replacement of welding wires is required. In this process, different wire reels need to be disassembled and replaced, and the robotic arm cannot work at the same time, which reduces the application scope of the welding robotic arm and thus reduces the welding efficiency of the welding robotic arm.

[0003] Therefore, a multi-axis welding robot arm for chassis forming processing is proposed to solve the above problems. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a multi-axis welding robot arm for chassis forming processing.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-axis welding robot arm for chassis forming processing, comprising a welding robot arm body, a wire supply mechanism and a wire feeding mechanism;

[0006] The wire supply mechanism is installed below the back of the welding robot arm body, and the wire feeding mechanism is arranged on the welding robot arm body;

[0007] The wire feeding mechanism comprises a wire feeding box, which is connected to the welding robot arm body, and a plurality of wire feeding bins are arranged inside the wire feeding box, and a hexagonal sleeve rod driven by a motor is movably installed inside the wire feeding bin, and a welding wire reel is sleeved on the outside of the hexagonal sleeve rod, and a dust cover is hinged on the top of the wire feeding box, and a wire feeding hose having the same number as the wire feeding bins is connected to one side of the wire feeding box;

[0008] The wire feeding mechanism includes a wire feeding box, which is installed on the welding robot arm body, the wire feeding box is internally installed with a fixed plate, the fixed plate is provided with wire holes with the same number as the wire feeding hose 1, the other end of the wire feeding hose 1 is connected to the wire feeding box, the wire feeding box is provided with a conveying component 1 with the same number, and the fixed plate is provided with a conveying component 2 with the same number as the conveying component 1, a limiting rod located on the outer side of the fixed plate is installed in the wire feeding box, a movable block is slidably installed on the limiting rod, the movable block is provided with a wire hole, the threaded rod is threadedly sleeved with a threaded rod movably installed in the wire feeding box, the threaded rod is driven by a motor, the external fixed sleeve of the welding gun of the welding robot arm body is provided with a fixed frame 1, the fixed frame 1 is fixedly sleeved with a wire supply sleeve, and a wire feeding hose 2 is connected between the movable block and the wire supply sleeve.

[0009] Preferably, the conveying component 1 includes a motor control box 1, which is installed in a wire feeding box. The motor control box 1 is driven and connected to a group of conveying wheels 1, and the motor control box 1 is driven and connected to a group of conveying wheels 2 below the conveying wheel 1.

[0010] Preferably, the conveying component 2 includes a motor control box 2, which is installed on a fixed plate, and the motor control box 2 is driven and connected to a group of conveying wheels 3, and the motor control box 2 is driven and connected to a group of conveying wheels 4 below the conveying wheels 3, and the conveying wheel 3 is connected to a rough wheel.

[0011] Preferably, the wire feeding box is installed with a limit frame with the same number as the conveying component, a slider is installed on the limit frame, a wheel frame is connected below the slider, a top support wheel is movably installed in the wheel frame, and a heat conductive ring is fixedly sleeved on the outside of the top support wheel.

[0012] Preferably, one side of the wheel frame is connected to a mounting frame, one side of the top of the mounting frame is connected to a magnetic block, the wire feeding box is installed with the same number of electromagnetic components as the conveying component one, the electromagnetic components can be magnetically attracted to the magnetic block, and a group of movable rods are movablely sleeved on one side of the interior of the mounting frame, one end of the movable rod is connected to spring 2 located in the mounting frame, the other end of the spring 2 is connected to the inner wall of the mounting frame, and the other end of the movable rod is connected to an extrusion plate.

[0013] Preferably, a heat-conducting strip is provided in the fixed sleeve inside the slider, one end of the heat-conducting strip is connected to the radiator located on the slider, the other end of the heat-conducting strip extends into the wheel frame and can contact the heat-conducting ring, and a plurality of groups of heat-dissipating holes are opened above the inside of the wire feeding box.

[0014] Preferably, it also includes a cooling mechanism, which is movably installed on the welding robot arm body, and the cooling mechanism includes a movable box, which is movably installed on the welding robot arm body, a liquid outlet cavity is opened in the movable box, and welding coolant is contained at the bottom of the movable box, a fixed pipe that can communicate with the liquid outlet cavity is connected to the movable box, a cotton loop is sleeved inside the movable box, and a connecting frame is movably sleeved inside the movable box, an electric push rod is installed at the bottom of the movable box, and the output end of the electric push rod extends into the movable box and is connected to the connecting frame, and a water receiving box sleeved on the outside of the fixed pipe is connected above the connecting frame, and a mesh plate abutting against the cotton loop is installed above the inside of the water receiving box.

[0015] Preferably, the outside of the welding robot arm body is connected to a second fixing frame, the internal fixing sleeve of the second fixing frame is provided with a water outlet pipe movably installed in the liquid outlet cavity, the internal fixing sleeve of the first fixing frame is provided with a second fixing pipe between the welding robot arm body and the wire supply sleeve, one end of the second fixing pipe faces the second fixing frame, the other end of the second fixing pipe is connected to a solenoid valve, and the other end of the water outlet pipe is connected to the solenoid valve.

[0016] Preferably, the internal movable sleeves on both sides of the hexagonal sleeve rod are provided with arc-shaped blocks that are clamped in the welding wire reel, the other side of the arc-shaped blocks is connected to a spring 1, the other end of the spring 1 is connected to the inner wall of the hexagonal sleeve rod, and the front surface of the hexagonal sleeve rod is threadedly sleeved with a threaded sleeve that can abut against the welding wire reel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a fixed plate and a movable block. When the wire needs to be changed, the control end controls the motor to drive the threaded rod to rotate, so that the movable block moves along the limit rod and moves to the welding wire that needs to be used, so that the wire hole in the movable block is connected to the wire hole position of the welding wire on the fixed plate, and the control end starts the corresponding motor to drive the hexagonal sleeve rod to rotate. Due to the rotation of the hexagonal sleeve rod, the welding wire reel is driven to rotate and release the wire. At the same time, the motor control box 1 drives the conveying wheel 1 and the conveying wheel 2 to rotate, and the motor control box 2 drives the conveying wheel 3 and the conveying wheel 4 to rotate, and the welding wire is pulled and conveyed into the wire hole in the movable block and is sent out from the wire supply sleeve through the wire feeding hose 2, so that different types of welding wires can be automatically replaced, thereby improving the application range of the multi-axis welding robot arm, without the need for manual operation, and thus improving the working effect and wire changing efficiency of the multi-axis welding robot arm.

[0019] The present invention arranges a mounting frame and an extrusion plate, and the control end controls the electromagnetic component to change the magnetic pole and generate magnetic repulsion to the magnetic block, thereby pushing the magnetic block, the mounting frame, the wheel frame and the sliding block to rise along the limit frame, so that the extrusion plate abuts against the rough surface wheel. The control end controls the motor control box 2 to drive the conveying wheel 3 and the conveying wheel 4 to rotate in the opposite direction, so that the welding wire in the wire supply sleeve and the wire feeding hose 2 shrinks back, finally escapes from the wire hole in the movable block, and shrinks into the wire hole in the fixed plate, thereby completing the wire withdrawal. Due to the rotation of the conveying wheel 3, the rough surface wheel can be driven to rotate at the same time, and the extrusion plate, the wire feeding hose 2, and the supporting wheel are driven to move upward along the limit frame under the action of friction force, so that the withdrawn welding wire is supported by the supporting wheel and the heat conductive ring, and the movable range of the withdrawn welding wire is limited, which has a regular effect on the welding wire, thereby avoiding entanglement between the welding wires, and at the same time avoiding the excessively high temperature welding wire from contacting the components in the wire feeding box, thereby avoiding damage to the components.

[0020] The present invention provides a cotton ring and a mesh plate, and the operation of the electric push rod can push the connecting frame to move upward, and at the same time drive the water receiving box and the mesh plate to push the cotton ring, so that the cotton ring is squeezed, and the squeezed welding coolant falls into the water receiving box, and flows into the water outlet pipe through the fixed tube one and the liquid outlet cavity. The control end opens the solenoid valve, and the welding coolant flows through the fixed tube two to the end of the welding wire extending from the wire supply sleeve, and cools the end of the welding wire to solidify it from a molten state. Since the welding wire is still in a molten state before welding, the design can solidify the welding wire before withdrawing, thereby avoiding contamination of the wire supply sleeve and the inside of the wire feeding hose two during the withdrawing process. At the same time, since the welding coolant is squeezed out through the cotton ring, the amount of welding coolant that finally flows out of the fixed tube two can be less, thereby avoiding a large amount of welding coolant flowing in and causing the end of the welding wire to crack due to thermal stress when the temperature drops rapidly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure inside the wire feeding box of the present invention;

[0023] Figure 3 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0024] Figure 4 It is a cross-sectional structural schematic diagram of the wire feeding box of the present invention;

[0025] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0026] Figure 6 It is a schematic cross-sectional structural diagram of a welding wire reel of the present invention;

[0027] Figure 7 for Figure 6 A schematic diagram of the local enlarged structure at C in the middle;

[0028] Figure 8 It is a schematic cross-sectional structural diagram of the wire feeding box of the present invention;

[0029] Fig. 9 It is a schematic cross-sectional structural diagram of the mounting frame of the present invention;

[0030] Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at D in the middle;

[0031] Fig.11 It is a structural schematic diagram of the wheel frame of the present invention;

[0032] Fig.12 It is a schematic cross-sectional structural diagram of the slider of the present invention;

[0033] Fig.13 for Fig.12 A schematic diagram of the local enlarged structure at E in the middle;

[0034] Fig.14 It is a schematic cross-sectional structural diagram of the movable block of the present invention;

[0035] Fig.15 It is a cross-sectional structural schematic diagram of the cooling mechanism of the present invention;

[0036] Fig.16 for Fig.15 A schematic diagram of the local enlarged structure at F in the middle;

[0037] Fig.17 It is a cross-sectional structural schematic diagram of the movable box of the present invention;

[0038] Fig.18 for Fig.17 Schematic diagram of the local enlarged structure at G in the middle.

[0039] In the figure: 1. welding robot arm body; 2. wire feeding mechanism; 21. wire feeding box; 22. wire feeding bin; 23. hexagonal sleeve rod; 24. welding wire reel; 25. arc block; 26. spring 1; 27. wire feeding hose 1; 28. dust cover; 29. ​​threaded sleeve; 3. wire feeding mechanism; 31. wire feeding box; 32. conveying assembly 1; 3201. motor control box 1; 3202. conveying wheel 1; 3203. conveying wheel 2; 33. conveying assembly 2; 3301. motor control box 2; 3302. conveying wheel 3; 3303. conveying wheel 4; 3304. rough surface wheel; 34. movable block; 35. limit rod; 36. threaded rod; 37. wire feeding hose 2; 38. Fixed frame one; 39, wire supply sleeve; 310, limit frame; 311, slider; 312, wheel frame; 313, top support wheel; 314, heat transfer ring; 315, heat transfer strip; 316, radiator; 317, mounting frame; 318, magnet; 319, electromagnetic assembly; 320, movable rod; 321, extrusion plate; 322, spring two; 323, fixed plate; 324, heat dissipation hole; 4, cooling mechanism; 41, movable box; 42, liquid outlet cavity; 43, cotton ring; 44, fixed pipe one; 45, water receiving box; 46, mesh plate; 47, electric push rod; 48, connecting frame; 49, fixed frame two; 410, water outlet pipe; 411, solenoid valve; 412, fixed pipe two. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 18 As shown, the present invention provides a multi-axis welding robot arm for chassis forming processing, comprising a welding robot arm body 1, a wire supply mechanism 2 and a wire feeding mechanism 3;

[0042] The wire supply mechanism 2 is installed at the lower part of the back of the welding robot arm body 1, and the wire feeding mechanism 3 is arranged on the welding robot arm body 1;

[0043] The wire feeding mechanism 2 includes a wire feeding box 21, which is connected to the welding robot body 1. A plurality of wire feeding bins 22 are arranged inside the wire feeding box 21. A hexagonal sleeve rod 23 driven by a motor is movably installed inside the wire feeding bin 22. A welding wire reel 24 is sleeved outside the hexagonal sleeve rod 23. A dust cover 28 is hinged on the top of the wire feeding box 21. One side of the wire feeding box 21 is connected to a wire feeding hose 27 having the same number as the wire feeding bin 22.

[0044] The wire feeding mechanism 3 includes a wire feeding box 31, which is mounted on the welding robot arm body 1. The wire feeding box 31 is internally mounted with a fixing plate 323, and the fixing plate 323 is provided with wire holes having the same number as the wire feeding hose 27. The other end of the wire feeding hose 27 is connected to the wire feeding box 31. The wire feeding box 31 is provided with a conveying assembly 32 having the same number as the conveying assembly 217. The fixing plate 323 is provided with a conveying assembly 2 33 having the same number as the conveying assembly 32. The wire feeding box 31 is provided with a conveying assembly 32 having the same number as the conveying assembly 32. 1 is installed with a limit rod 35 located outside the fixed plate 323, and a movable block 34 is slidably installed on the limit rod 35. The movable block 34 is provided with a wire hole, and a threaded rod 36 is internally threadedly sleeved with a threaded rod 36 movably installed in the wire feeding box 31. The threaded rod 36 is driven by a motor. A fixed frame 1 38 is fixedly sleeved on the outside of the welding gun of the welding robot body 1, and a wire supply sleeve 39 is fixedly sleeved in the fixed frame 1 38. A wire feeding hose 2 37 is connected between the movable block 34 and the wire supply sleeve 39.

[0045] The above scheme is adopted: the control end controls the motor to drive the threaded rod 36 to rotate, so that the movable block 34 moves along the limit rod 35 and moves to the welding wire required to be used, so that the wire hole in the movable block 34 is connected to the wire hole position of the welding wire on the fixed plate 323, and the control end starts the corresponding motor to drive the hexagonal sleeve rod 23 to rotate. Due to the rotation of the hexagonal sleeve rod 23, the welding wire reel 24 will be driven to rotate and release the wire. At the same time, the motor control box 1 3201 drives the conveying wheel 1 3202 and the conveying wheel 2 3203 to rotate, and the motor control box 2 3301 drives the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate, and the welding wire is pulled and conveyed into the wire hole in the movable block 34, and is sent out from the wire supply sleeve 39 through the wire feeding hose 2 37, so that different types of welding wires can be automatically replaced.

[0046] like Figures 7 to 9 As shown, the conveying component 32 includes a motor control box 3201, which is installed in the wire feeding box 31. The motor control box 3201 is driven and connected to a group of conveying wheels 3202, and the motor control box 3201 is driven and connected to a group of conveying wheels 3203 below the conveying wheels 3202.

[0047] The above scheme is adopted: the motor drives the hexagonal sleeve rod 23 to rotate, and the rotation of the hexagonal sleeve rod 23 will drive the wire reel 24 to rotate to release the wire. At the same time, the motor control box 1 3201 drives the conveying wheel 1 3202 and the conveying wheel 2 3203 to rotate, and the motor control box 2 3301 drives the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate, pulling the conveying welding wire into the wire hole in the movable block 34, and sent out from the wire supply sleeve 39 through the wire feeding hose 2 37.

[0048] like Figures 7 to 9As shown, the conveying component 2 33 includes a motor control box 2 3301, which is installed on the fixed plate 323, and the motor control box 2 3301 is driven and connected to a group of conveying wheels 3 3302, and the motor control box 2 3301 is driven and connected to a group of conveying wheels 4 3303 below the conveying wheels 3 3302, and the conveying wheels 3 3302 are connected to a rough surface wheel 3304.

[0049] The above scheme is adopted: the control end controls the motor control box 2 3301 to drive the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate in the opposite direction, so that the welding wire in the wire supply sleeve 39 and the wire feeding hose 2 37 shrinks back, and finally detaches from the wire hole in the movable block 34, and shrinks into the wire hole in the fixed plate 323, thereby completing the wire withdrawal.

[0050] like Figures 8 to 13 As shown, the wire feeding box 31 is installed with a limit frame 310 of the same number as the conveying component 1 32, a slider 311 is installed on the limit frame 310, a wheel frame 312 is connected below the slider 311, a top support wheel 313 is movably installed in the wheel frame 312, and a heat conductive ring 314 is fixedly sleeved on the outside of the top support wheel 313.

[0051] Adopting the above scheme: when the slider 311 moves upward along the limit frame 310, the wheel frame 312, the supporting wheel 313 and the thermal conductive ring 314 will rise together, and at the same time, the returned welding wire will be supported by the supporting wheel 313 and the thermal conductive ring 314 to limit the range of movement of the returned welding wire.

[0052] like Figures 8 to 13 As shown, one side of the wheel frame 312 is connected to a mounting frame 317, one side of the top of the mounting frame 317 is connected to a magnetic block 318, and the wire feeding box 31 is installed with the same number of electromagnetic components 319 as the conveying component 1 32, and the electromagnetic components 319 can be magnetically attracted to the magnetic block 318, and a group of movable rods 320 are movably sleeved on one side of the interior of the mounting frame 317, one end of the movable rod 320 is connected to a spring 2 322 located in the mounting frame 317, and the other end of the spring 2 322 is connected to the inner wall of the mounting frame 317, and the other end of the movable rod 320 is connected to an extrusion plate 321.

[0053] The above scheme is adopted: the control end controls the electromagnetic component 319 to change the magnetic pole and generate magnetic repulsion to the magnetic block 318, pushing the magnetic block 318, the mounting frame 317, the wheel frame 312 and the slider 311 to rise along the limit frame 310, so that the thermal conductive ring 314 contacts the welding wire, and at the same time makes the extrusion plate 321 abut against the rough wheel 3304, and under the extrusion action of the rough wheel 3304, the extrusion plate 321 and the movable rod 320 shrink into the mounting frame 317, at this time, the spring 2 322 is compressed, and due to the elastic recovery effect of the spring 2 322, the abutment force between the extrusion plate 321 and the rough wheel 3304 can be increased, thereby increasing the friction between the rough wheel 3304 and the extrusion plate 321.

[0054] like Figures 8 to 13 As shown, a heat-conducting strip 315 is fixedly sleeved inside the slider 311, one end of the heat-conducting strip 315 is connected to a heat sink 316 located on the slider 311, and the other end of the heat-conducting strip 315 extends into the wheel frame 312 and can contact the heat-conducting ring 314, and a plurality of groups of heat-dissipating holes 324 are opened on the upper part of the wire feeding box 31.

[0055] By adopting the above solution, when the slider 311 rises, the radiator 316 can be driven to rise at the same time and extend from the heat dissipation hole 324 to the outside. At this time, the heat conduction ring 314 can conduct the heat of the welding wire to the radiator 316 through the heat conduction bar 315, so that the welding wire can exchange heat and cool down with the outside while preventing dust.

[0056] like Figure 3 , Figures 15 to 18 As shown, it also includes a cooling mechanism 4, which is movably installed on the welding robot arm body 1. The cooling mechanism 4 includes a movable box 41, which is movably installed on the welding robot arm body 1. A liquid outlet cavity 42 is opened in the movable box 41, and welding coolant is contained at the bottom of the movable box 41. A fixed pipe 44 that can communicate with the liquid outlet cavity 42 is connected to the movable box 41. A cotton ring 43 is sleeved inside the movable box 41. A connecting frame 48 is movably sleeved inside the movable box 41. An electric push rod 47 is installed at the bottom of the movable box 41. The output end of the electric push rod 47 extends into the movable box 41 and is connected to the connecting frame 48. A water receiving box 45 sleeved on the outside of the fixed pipe 44 is connected above the connecting frame 48. A mesh plate 46 abutting against the cotton ring 43 is installed above the inside of the water receiving box 45.

[0057] By adopting the above scheme: the cotton ring 43 will absorb the welding coolant inside the movable box 41 upwards through capillary action, so that the cotton ring 43 is soaked with the welding coolant. When the welding wire needs to be replaced, the operation of the electric push rod 47 can push the connecting frame 48 to move upward, and at the same time drive the water receiving box 45 and the mesh plate 46 to push the cotton ring 43, so that the cotton ring 43 is squeezed, and the squeezed welding coolant falls into the water receiving box 45, and then flows into the water outlet pipe 410 through the fixed pipe 44 and the liquid outlet cavity 42.

[0058] like Figure 3 , Figures 15 to 18 As shown, the outside of the welding robot body 1 is connected to a fixing frame 49, the internal fixing sleeve of the fixing frame 49 is provided with a water outlet pipe 410 movably installed in the liquid outlet cavity 42, the internal fixing sleeve of the fixing frame 38 is provided with a fixing pipe 412 between the welding robot body 1 and the wire supply sleeve 39, one end of the fixing pipe 412 faces the fixing frame 49, the other end of the fixing pipe 412 is connected to the solenoid valve 411, and the other end of the water outlet pipe 410 is connected to the solenoid valve 411.

[0059] The above scheme is adopted: the control end opens the solenoid valve 411, and the welding coolant flows through the fixed pipe 412 to the end of the welding wire extending from the wire supply sleeve 39, and cools the end of the welding wire, so that the end of the welding wire solidifies from the molten state.

[0060] like Figure 2 , Figures 4 to 7 As shown, the internal movable sleeves on both sides of the hexagonal sleeve rod 23 are provided with arc-shaped blocks 25 that are clamped in the welding wire reel 24, and the other side of the arc-shaped blocks 25 is connected to a spring 26, and the other end of the spring 26 is connected to the inner wall of the hexagonal sleeve rod 23. The front surface of the hexagonal sleeve rod 23 is threadedly sleeved with a threaded sleeve 29 that can abut against the welding wire reel 24.

[0061] The above scheme is adopted: open the dust cover 28, put different welding wire reels 24 into the wire supply bin 22 respectively, and push the welding wire reel 24 into the hexagonal sleeve rod 23. In the process of pushing the hexagonal sleeve rod 23, the arc-shaped clamping block 25 will be squeezed and retracted into the hexagonal sleeve rod 23, and the spring 1 26 will be compressed. After the welding wire reel 24 is completely put on, due to the elastic recovery effect of the spring 1 26, the arc-shaped clamping block 25 will be pushed to be clamped in the welding wire reel 24 and fixed. Then the threaded sleeve 29 is screwed onto the hexagonal sleeve rod 23 and tightened until it abuts against the welding wire reel 24, thereby realizing the installation and fixation of the welding wire reel 24.

[0062] The working principle and use process of the present invention:

[0063] Open the dust cover 28, put different welding wire reels 24 into the wire supply bin 22 respectively, and push the welding wire reel 24 into the hexagonal sleeve rod 23. In the process of pushing the hexagonal sleeve rod 23, the arc block 25 will be squeezed and retracted into the hexagonal sleeve rod 23, and the spring 1 26 will be compressed. After the welding wire reel 24 is completely put on, due to the elastic recovery effect of the spring 1 26, the arc block 25 will be pushed to be clamped in the welding wire reel 24 and fixed. Then the threaded sleeve 29 is screwed onto the hexagonal sleeve rod 23 and tightened until it abuts against the welding wire reel 24. The welding wire in the welding wire reel 24 passes through the wire supply box 21 and the wire feeding hose 1 27 and extends into the wire feeding box 31, passes through the conveying wheel 1 3202 and the conveying wheel 2 3203, passes through the wheel frame 312 and extends between the conveying wheel 3 3302 and the conveying wheel 4 3303, and enters the wire hole in the fixed plate 323.

[0064] When in use, the corresponding motor drives the hexagonal sleeve rod 23 to rotate. Due to the rotation of the hexagonal sleeve rod 23, the wire reel 24 is driven to rotate to release the wire. At the same time, the motor control box 1 3201 drives the conveying wheel 1 3202 and the conveying wheel 2 3203 to rotate, and the motor control box 2 3301 drives the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate, pulling the conveying welding wire into the wire hole in the movable block 34, and sent out from the wire supply sleeve 39 through the wire feeding hose 2 37.

[0065] The cotton ring 43 will absorb the welding coolant inside the movable box 41 upwards through capillary action, so that the cotton ring 43 is soaked with the welding coolant. When the welding wire needs to be replaced, the operation of the electric push rod 47 can push the connecting frame 48 to move upward, and at the same time drive the water receiving box 45 and the mesh plate 46 to push the cotton ring 43, so that the cotton ring 43 is squeezed, and the squeezed welding coolant falls into the water receiving box 45, and flows into the water outlet pipe 410 through the fixed pipe 1 44 and the liquid outlet cavity 42. The control end opens the solenoid valve 411, and the welding coolant flows through the fixed pipe 2 412 to the end of the welding wire extending from the wire supply sleeve 39, and cools the end of the welding wire to solidify it from a molten state.

[0066] The control end controls the electromagnetic assembly 319 to change the magnetic pole and generate magnetic repulsion to the magnetic block 318, pushing the magnetic block 318, the mounting frame 317, the wheel frame 312 and the slider 311 to rise along the limit frame 310, so that the heat conductive ring 314 contacts the welding wire, and at the same time, the extrusion plate 321 abuts against the rough surface wheel 3304, and under the extrusion of the rough surface wheel 3304, the extrusion plate 321 and the movable rod 320 are retracted into the mounting frame 317, and the spring 322 is compressed at this time. Due to the elastic recovery effect of the spring 322, the abutment force between the extrusion plate 321 and the rough surface wheel 3304 can be increased, thereby increasing the friction between the rough surface wheel 3304 and the extrusion plate 321. Friction, the control end controls the motor control box 2 3301 to drive the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate in the opposite direction, so that the welding wire in the wire supply sleeve 39 and the wire feeding hose 2 37 shrinks back, and finally detaches from the wire hole in the movable block 34, and shrinks into the wire hole in the fixed plate 323, thereby completing the wire withdrawal. Due to the rotation of the conveying wheel 3302, the rough surface wheel 3304 can be driven to rotate at the same time, and under the action of friction, the extrusion plate 321, the wire feeding hose 2 37, and the supporting wheel 313 are driven to move upward along the limit frame 310, so that the withdrawn welding wire is supported by the supporting wheel 313 and the heat conductive ring 314, thereby limiting the movable range of the withdrawn welding wire.

[0067] When the slider 311 rises, the radiator 316 can be driven to rise at the same time and extend from the heat dissipation hole 324 to the outside. At this time, the heat conduction ring 314 can conduct the heat of the welding wire to the radiator 316 through the heat conduction bar 315, so that the welding wire can exchange heat with the outside world while preventing dust.

[0068] The control end controls the motor to drive the threaded rod 36 to rotate, so that the movable block 34 moves along the limit rod 35 and moves to the welding wire required to be used, so that the wire hole in the movable block 34 is connected to the wire hole position of the welding wire on the fixed plate 323, and the control end starts the corresponding motor to drive the hexagonal sleeve rod 23 to rotate. Due to the rotation of the hexagonal sleeve rod 23, the welding wire reel 24 will be driven to rotate and release the wire. At the same time, the motor control box 1 3201 drives the conveying wheel 1 3202 and the conveying wheel 2 3203 to rotate, and the motor control box 2 3301 drives the conveying wheel 3 3302 and the conveying wheel 4 3303 to rotate, and the welding wire is pulled and conveyed into the wire hole in the movable block 34, and is sent out from the wire supply sleeve 39 through the wire feeding hose 2 37, so that different types of welding wires can be automatically replaced.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-axis welding robot arm for chassis forming processing, characterized in that: It comprises a welding robot arm body (1), a wire supply mechanism (2) and a wire feeding mechanism (3); The wire supply mechanism (2) is installed below the back of the welding robot arm body (1), and the wire feeding mechanism (3) is arranged on the welding robot arm body (1); The wire feeding mechanism (2) comprises a wire feeding box (21), the wire feeding box (21) is connected to the welding robot arm body (1), a plurality of wire feeding bins (22) are arranged inside the wire feeding box (21), a hexagonal sleeve rod (23) driven by a motor is movably installed inside the wire feeding bin (22), a welding wire reel (24) is sleeved on the outside of the hexagonal sleeve rod (23), a dust cover (28) is hinged on the top of the wire feeding box (21), and one side of the wire feeding box (21) is connected to a wire feeding hose (27) having the same number as the wire feeding bins (22); The wire feeding mechanism (3) comprises a wire feeding box (31), the wire feeding box (31) is mounted on the welding robot arm body (1), the interior of the wire feeding box (31) is mounted with a fixing plate (323), the fixing plate (323) is provided with wire holes having the same number as the wire feeding hose (27), the other end of the wire feeding hose (27) is connected to the wire feeding box (31), the wire feeding box (31) is installed with the same number of conveying components (32) as (217), the fixing plate (323) is installed with the same number of conveying components (33) as the conveying components (32), the wire feeding box ( A limiting rod (35) located outside the fixing plate (323) is installed in the welding robot arm body (1), a movable block (34) is slidably installed on the limiting rod (35), a thread hole is provided on the movable block (34), the threaded rod (36) is internally threadedly sleeved with a threaded rod (36) movably installed in the wire feeding box (31), the threaded rod (36) is driven by a motor, the welding gun of the welding robot arm body (1) is externally fixedly sleeved with a fixing frame 1 (38), a wire supply sleeve (39) is fixedly sleeved in the fixing frame 1 (38), and a wire feeding hose 2 (37) is connected between the movable block (34) and the wire supply sleeve (39).

2. The multi-axis welding robot arm for chassis forming processing according to claim 1, characterized in that: The conveying component 1 (32) includes a motor control box 1 (3201), and the motor control box 1 (3201) is installed in the wire feeding box (31). The motor control box 1 (3201) is driven and connected to a group of conveying wheels 1 (3202), and the motor control box 1 (3201) is driven and connected to a group of conveying wheels 2 (3203) below the conveying wheel 1 (3202).

3. The multi-axis welding robot arm for chassis forming processing according to claim 2, characterized in that: The conveying component 2 (33) includes a motor control box 2 (3301), which is installed on a fixed plate (323). The motor control box 2 (3301) is driven and connected to a group of conveying wheels 3 (3302). The motor control box 2 (3301) is driven and connected to a group of conveying wheels 4 (3303) below the conveying wheels 3 (3302), and the conveying wheels 3 (3302) are connected to a rough surface wheel (3304).

4. The multi-axis welding robot arm for chassis forming processing according to claim 1, characterized in that: The wire feeding box (31) is provided with a limit frame (310) having the same number as the conveying assembly (32), a slider (311) is provided on the limit frame (310), a wheel frame (312) is connected below the slider (311), a top support wheel (313) is movably provided in the wheel frame (312), and a heat conducting ring (314) is fixedly sleeved on the outside of the top support wheel (313).

5. The multi-axis welding robot arm for chassis forming processing according to claim 4, characterized in that: One side of the wheel frame (312) is connected to a mounting frame (317), and one side of the top of the mounting frame (317) is connected to a magnetic block (318). The wire feeding box (31) is installed with the same number of electromagnetic components (319) as the conveying component one (32), and the electromagnetic components (319) can be magnetically attracted to the magnetic block (318). One side of the interior of the mounting frame (317) is movably sleeved with a group of movable rods (320), and one end of the movable rod (320) is connected to a spring two (322) located in the mounting frame (317), and the other end of the spring two (322) is connected to the inner wall of the mounting frame (317), and the other end of the movable rod (320) is connected to an extrusion plate (321).

6. The multi-axis welding robot arm for chassis forming processing according to claim 5, characterized in that: A heat-conducting strip (315) is fixedly sleeved inside the slider (311), one end of the heat-conducting strip (315) is connected to a heat sink (316) located on the slider (311), the other end of the heat-conducting strip (315) extends into the wheel frame (312) and can contact the heat-conducting ring (314), and a plurality of groups of heat-dissipating holes (324) are opened on the top of the inside of the wire feeding box (31).

7. The multi-axis welding robot arm for chassis forming processing according to claim 1, characterized in that: The invention also comprises a cooling mechanism (4), wherein the cooling mechanism (4) is movably mounted on the welding robot arm body (1), and the cooling mechanism (4) comprises a movable box (41), wherein the movable box (41) is movably mounted on the welding robot arm body (1), wherein a liquid outlet cavity (42) is provided in the movable box (41), wherein welding coolant is contained at the bottom of the movable box (41), wherein a fixed pipe (44) capable of communicating with the liquid outlet cavity (42) is connected to the movable box (41), and wherein the movable box (41) is provided with a plurality of movable pipes (44) connected to the movable box (41). A cotton ring (43) is sleeved inside the movable box (41), a connecting frame (48) is sleeved inside the movable box (41), an electric push rod (47) is installed below the movable box (41), the output end of the electric push rod (47) extends into the movable box (41) and is connected to the connecting frame (48), a water receiving box (45) sleeved outside the fixed pipe (44) is connected above the connecting frame (48), and a mesh plate (46) abutting against the cotton ring (43) is installed above the inside of the water receiving box (45).

8. The multi-axis welding robot arm for chassis forming processing according to claim 7, characterized in that: The outside of the welding robot arm body (1) is connected to a second fixing frame (49); the internal fixing sleeve of the second fixing frame (49) is provided with a water outlet pipe (410) movably installed in the liquid outlet cavity (42); the internal fixing sleeve of the first fixing frame (38) is provided with a second fixing pipe (412) between the welding robot arm body (1) and the wire supply sleeve (39); one end of the second fixing pipe (412) faces the second fixing frame (49); the other end of the second fixing pipe (412) is connected to an electromagnetic valve (411); and the other end of the water outlet pipe (410) is connected to the electromagnetic valve (411).

9. The multi-axis welding robot arm for chassis forming processing according to claim 1, characterized in that: The internal movable sleeves on both sides of the hexagonal sleeve rod (23) are provided with arc-shaped clamping blocks (25) clamped in the welding wire reel (24); the other side of the arc-shaped clamping block (25) is connected to a spring 1 (26); the other end of the spring 1 (26) is connected to the inner wall of the hexagonal sleeve rod (23); the front surface of the hexagonal sleeve rod (23) is threadedly sleeved with a threaded sleeve (29) capable of abutting against the welding wire reel (24).

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