Auxiliary device for CMT automatic welding

Abstract

The invention relates to the technical field of CMT automatic welding application, and discloses an auxiliary device for CMT automatic welding, which comprises a base and a rotating frame rotatably arranged on the base, a first station and a second station for clamping workpieces are formed on two sides of the rotating frame, and a CMT welding robot is fixedly arranged on one side of the rotating frame; supporting plates are installed on the first station and the second station of the rotating frame, fixing assemblies used for fixing workpieces are installed on the supporting plates, each fixing assembly comprises a positioning base, an adjusting base, a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are rotationally installed on the adjusting base, a first pressing arm is installed on the first rotating shaft, and a second pressing arm is installed on the second rotating shaft. The multiple sets of fixing assemblies are arranged, the positioning base and the adjusting base are installed on the supporting plate in a sliding mode, the supporting plate is provided with a first fixing piece used for fixing the positioning base, and the supporting plate is provided with a second fixing piece used for fixing the adjusting base. The fixing mode of the workpiece can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of CMT automatic welding applications, and in particular to a fixing bracket for CMT automatic welding. Background Art

[0002] CMT is a cold metal transfer welding technology with the advantages of low heat input, ultra-low spatter, and good weld formation. In order to enable CMT automatic welding to weld workpieces smoothly, auxiliary devices are generally used.

[0003] At present, the auxiliary device for assisting CMT automatic welding is described in the utility model with announcement number CN213945481U, which includes a base and a rotating frame rotatably arranged on the base, the rotating frame is formed with a first station and a second station for clamping the workpiece on both sides thereof, and a first welding robot and a second welding robot are fixedly arranged on the rotating frame; the welding technology adopted by the first welding robot and the second welding robot is the CMT automatic welding technology. The auxiliary device also includes an active turntable seat and a driven turntable seat arranged in pairs on the rotating frame, the active turntable seat and the driven turntable seat are arranged relative to each other to form the first station or the second station, the active turntable seat and the driven turntable seat have a rotatable flange, and a roughly L-shaped quick fixing device is detachably connected to the flange, and the quick fixing device mainly uses two clamping blocks to clamp or release the workpiece.

[0004] With respect to the above-mentioned related technologies, the auxiliary device has a relatively simple method of fixing the workpiece. Summary of the invention

[0005] In order to increase the fixing methods for workpieces, the present application provides an auxiliary device for CMT automatic welding.

[0006] The present application provides a CMT automatic welding auxiliary device, which adopts the following technical solution: A CMT automatic welding auxiliary device comprises a base and a rotating frame rotatably arranged on the base, the rotating frame is formed with a first station and a second station for clamping a workpiece on both sides, and a CMT welding robot is fixedly arranged on one side of the rotating frame; a support plate is installed on the first station and the second station of the rotating frame, and a fixing component for fixing the workpiece is installed on the supporting plate, and the fixing component comprises a positioning seat, an adjustment base, and a first rotating shaft and a second rotating shaft rotatably installed on the adjustment base, and the positioning seat is distributed with a plurality of them, the first rotating shaft and the second rotating shaft are arranged in parallel, the first rotating shaft is installed with a first pressing arm, and the second rotating shaft is installed with a second pressing arm, the first pressing arm is arranged at intervals along the length direction of the first rotating shaft, and the second pressing arm is arranged at intervals along the length direction of the second rotating shaft, the first pressing arm and the second pressing arm are staggered, and a spacing is left between adjacent first pressing arms and second pressing arms; The adjusting base is provided with a first driving source for driving the first rotating shaft to rotate, and the first pressing arm presses or releases the workpiece as the first rotating shaft rotates. The adjusting base is provided with a second driving source for driving the second rotating shaft to rotate, and the second pressing arm presses or releases the workpiece as the first rotating shaft rotates. There are multiple groups of fixing components, the first rotating shafts between two adjacent fixing components are parallel or perpendicular to each other, the positioning seat and the adjustment base are slidably installed on the support plate, the sliding direction of the adjustment base and the length direction of the first rotating shaft are perpendicular to each other, the support plate is provided with a first fixing member for fixing the positioning seat, and the support plate is provided with a second fixing member for fixing the adjustment base.

[0007] By adopting the above technical solution, the rotating frame can drive the first station or the second station to approach the CMT welding robot. When the CMT welding robot welds the workpiece on the first station, the worker can install the workpiece on the second station or remove the workpiece from the second station, thereby increasing the welding efficiency of the workpiece. The first pressing arm and the second pressing arm in the fixing assembly are staggeredly distributed, and can flexibly press or release the workpiece, thereby ensuring the stability and accuracy of the workpiece during the welding process; and during the welding process, when the first pressing arm presses the workpiece, the second pressing arm releases the workpiece, and the first pressing arm can be bypassed during welding. After welding is completed, the second pressing arm presses the workpiece, and the first pressing arm releases the workpiece, and the second pressing arm is bypassed again during welding. After two weldings are completed, the fixing method of the fixing assembly can still enable the part of the workpiece that needs to be welded to generate a complete weld seam; the positions of multiple groups of fixing assemblies can be adjusted, and they can be flexibly fixed according to the size of the workpiece, which also increases the adaptability and fixing method of the fixing assembly.

[0008] Optionally, the first pressure arm includes a first pressure rod and a first connecting rod, the first pressure rod and the first connecting rod are connected, the first connecting rod is fixedly connected with a first sleeve, the first sleeve is sleeved on the first rotating shaft, and the first sleeve is slidably or rotatably installed on the first rotating shaft; the second pressure arm includes a second pressure rod and a second connecting rod, the second pressure rod and the second connecting rod are connected, the second connecting rod is fixedly connected with a second sleeve, the second sleeve is sleeved on the second rotating shaft, and the auxiliary device also includes a fastening assembly for fixing the first sleeve and the second sleeve.

[0009] By adopting the above technical solution, by refining the structures of the first pressure arm and the second pressure arm, they are designed as a combination of the first pressure rod and the first connecting rod, the second pressure rod and the second connecting rod, respectively, and are sleeved on the first rotating shaft and the second rotating shaft through the first sleeve and the second sleeve, and there is also a fastening assembly, so that the position and angle of the first pressure arm on the first rotating shaft can be adjusted, and the position and angle of the second pressure arm on the second rotating shaft can also be adjusted, so that when the workpiece is placed on the support plate, the first pressure arm and the second pressure arm can increase the pressing method against the workpiece.

[0010] Optionally, the fastening assembly includes a guide bar, a plurality of connecting blocks slidably mounted on the guide bar, the connecting block is fixedly connected to a sliding rod, the sliding rod passes through the guide bar and is fixedly connected to a limiting block, the sliding rod is threadedly connected to a fastening nut, and the fastening nut is used to fix the connecting block on the guide bar; the first rotating shaft and the second rotating shaft are both provided with a receiving groove for accommodating the guide bar, the guide bar is fixedly mounted in the receiving groove, and the limiting block slides along the inner wall of the receiving groove.

[0011] By adopting the above technical solution, the specific design of the fastening assembly, including components such as guide bars, connecting blocks, sliding rods, limit blocks and fastening nuts, allows the first rotating shaft and the second rotating shaft to be installed and fixed more stably; the cooperation between the guide bar and the receiving groove, and the sliding of the limit block on the inner wall of the receiving groove, all increase the stability and durability of the device.

[0012] Optionally, a baffle is installed on the support plate, and the baffle is located between the adjustment base and the positioning seat.

[0013] By adopting the above technical solution, the setting of the baffle can shield the arc generated during the welding process and provide a more comfortable working environment for the workshop staff.

[0014] Optionally, the baffle plate and the support plate maintain a vertical relationship, and the side wall of the baffle plate facing away from the support plate is connected to a limiting rod, and multiple limiting rods are arranged at intervals along the baffle plate. The first sleeve and the second sleeve are both provided with slots for inserting the limiting rods, and the slots are distributed along the circumferential direction of the first sleeve. When the first pressing arm presses the workpiece, one end wall of the slot is in contact with the limiting rod.

[0015] By adopting the above technical solution, the relationship between the baffle and the limiting rod enables the baffle to maintain a good shielding state and not easily fall off the support plate when the first pressing arm and the second pressing arm fix the workpiece.

[0016] Optionally, the limiting rod is fixedly connected to an insertion rod, the first sleeve and the second sleeve are both provided with a clearance groove for inserting the insertion rod, and the inner groove wall of the slot is provided with a sliding groove for sliding connection of the insertion rod.

[0017] By adopting the above technical solution, the connection relationship between the limit rod and the first sleeve and the second sleeve is further increased.

[0018] Optionally, the baffles are spliced ​​and arranged, and the baffles correspond to the limiting rods one by one.

[0019] By adopting the above technical solution, the baffles are spliced ​​and arranged, and correspond one to one with the limit rods. This design can be flexibly adjusted according to the size and shape of different workpieces.

[0020] Optionally, the first fixing member is a screw, one end of which is fixedly connected to the positioning seat, the other end of which passes through the support plate and is threadedly connected to a nut, and the support plate is provided with a through groove for the screw to slide.

[0021] By adopting the above technical solution, the positioning seat can be firmly fixed on the support plate, and the positioning seat can be fine-tuned by adjusting the position of the screw.

[0022] Optionally, the second fixing member is a telescopic rod and a fixing bolt for fixing the telescopic rod, one end of the telescopic rod is fixedly connected to a positioning seat close to the adjustment base, and the other end of the telescopic rod is fixedly connected to the adjustment base.

[0023] By adopting the above technical solution, the adjustable base can be extended and adjusted as needed. This design not only increases the flexibility and adaptability of the device, but also makes the installation and adjustment process more convenient and quick for users.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. Through the design of double-station clamping, fixed components and independent drive source control, multi-angle fixation and flexible adjustment of the workpiece are achieved, thereby improving the flexibility and efficiency of welding; 2. By adopting designs such as adjustable fixing components, spliced ​​baffles and telescopic second fixing parts, the device can be flexibly adjusted according to the size and shape of different workpieces, thereby improving the versatility and flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the overall structure of one of the workstations in the embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of point A; Figure 4 is a schematic structural diagram of a first fixing member in an embodiment of the present application; Figure 5 is a cross-sectional view of an embodiment of the present application showing that a fastening assembly is installed on a first rotating shaft; Figure 6 is a schematic structural diagram of a fastening assembly installed on a first rotating shaft in an embodiment of the present application; Figure 7 This is a fixing method of the fixing component of the embodiment of the present application to fix the workpiece; Figure 8 This is a schematic diagram of the structure after the baffle is installed on the support plate according to an embodiment of the present application; Fig. 9 is a cross-sectional view of an embodiment of the present application after the baffle is installed; Fig.10 yes Fig. 9 An enlarged schematic diagram of point B; Fig.11 It is a schematic diagram of the structure of an embodiment of the present application in which a limit rod and an insertion rod are installed in a second sleeve.

[0026] Description of reference numerals: 1. CMT welding robot; 100. base; 200. rotating frame; 210. first station; 220. second station; 230. support plate; 231. through slot; 240. active seat; 250. driven seat; 300. fixing assembly; 310. positioning seat; 311. screw; 320. adjusting base; 321. telescopic rod; 322. fixing bolt; 330. first rotating shaft; 340. second rotating shaft; 350. first pressing arm; 351. first pressing rod; 352. first connecting rod; 3 53. Pressure block; 354. First sleeve; 360. Second pressure arm; 361. Second pressure rod; 362. Second connecting rod; 363. Second sleeve; 370. Slot; 380. Clearance groove; 390. Slide groove; 400. Fastening assembly; 410. Guide strip; 411. Guide groove; 420. Connecting block; 421. Slide rod; 422. Limiting block; 430. Fastening nut; 440. Fastening bolt; 500. Baffle; 510. Limiting rod; 520. Inserting rod; 10. First workpiece; 20. Second workpiece. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-11 This application is described in further detail.

[0028] The present application discloses an auxiliary device for CMT automatic welding. Figure 1 A CMT automatic welding auxiliary device includes a base 100 and a rotating frame 200 rotatably arranged on the base 100, and the rotating shaft between the rotating frame 200 and the base 100 is not shown in the figure. The rotating frame 200 is formed with a first station 210 and a second station 220 for clamping workpieces on both sides, and a CMT welding robot 1 is fixedly arranged on one side of the rotating frame 200. When the rotating frame 200 rotates, the CMT welding robot 1 approaches the first station 210 or the second station 220. The rotation relationship between the CMT welding robot 1, the rotating frame 200 and the base 100 is not improved in the embodiment of the present application, and will not be elaborated.

[0029] Reference Figure 2 Specifically, the first station 210 and the second station 220 are both rotatably mounted with a support plate 230, and the first station 210 and the second station 220 are both rotatably mounted with an active seat 240 and a driven seat 250, and a motor (not shown in the figure) for driving the active seat 240 to rotate is installed on the rotating frame 200. One end of the support plate 230 is fixedly connected to the active seat 240, and the other end of the support plate 230 is fixedly connected to the driven seat 250. The motor drives the support plate 230 to rotate into a horizontal state, so that the workpiece can be placed horizontally to facilitate the CMT welding robot 1 to perform welding work; the motor can also drive the support plate 230 to rotate into an inclined state, which is convenient for the staff to take and place the workpiece.

[0030] Reference Figure 3 and Figure 4 Furthermore, a fixing assembly 300 for fixing the workpiece is installed on the support plate 230. The fixing assembly 300 includes a positioning seat 310 for determining the position of the workpiece. The positioning seat 310 is slidably arranged along the X-axis and Y-axis directions of the support plate 230. A first fixing member for fixing the positioning seat 310 is arranged on the support plate 230. The first fixing member is a screw 311. One end of the screw 311 is fixedly connected to the positioning seat 310. The other end of the screw 311 passes through the support plate 230 and is threadedly connected to a nut. A through slot 231 for the screw 311 to slide is provided on the support plate 230. According to the shape and size of the workpiece, the corresponding positioning seat 310 is slid to the specified position so that the positioning seat 310 can clamp and fix the workpiece.

[0031] Reference Figure 3 and Figure 4 The fixing assembly 300 also includes an adjustment base 320, and a first rotating shaft 330 and a second rotating shaft 340 installed on the adjustment base 320. The first rotating shaft 330 and the second rotating shaft 340 are arranged in parallel, and the first rotating shaft 330 is higher than the second rotating shaft 340. The adjustment base 320 is equipped with a first driving source for driving the first rotating shaft 330 to rotate, and a second driving source for driving the second rotating shaft 340 to rotate, and the first driving source and the second driving source are both motors. The first rotating shaft 330 is equipped with a first pressing arm 350, and the first pressing arm 350 is arranged at intervals along the length direction of the first rotating shaft 330. The second rotating shaft 340 is equipped with a second pressing arm 360, and the second pressing arm 360 is arranged at intervals along the length direction of the second rotating shaft 340. The first pressing arm 350 and the second pressing arm 360 are staggered, and a spacing is left between the first pressing arm 350 and the second pressing arm 360.

[0032] When two workpieces to be welded are stacked and placed on the support plate 230 of the first station 210, the positioning seat 310 fixes the first workpiece 10, the first rotating shaft 330 rotates, and at the same time drives a row of first pressing arms 350 to press down the second workpiece 20, so that the two workpieces can contact each other, and the second rotating shaft 340 rotates to continue pressing the second workpiece, so that the workpieces to be welded together remain in a fixed state. The rotating seat rotates to make the first station 210 close to the CMT welding robot 1, and then all the first pressing arms 350 of the first rotating shaft 330 rotate away, and the CMT welding robot 1 avoids the position of the second pressing arm 360 to weld the workpiece. After welding, the first pressing arm 350 presses the workpiece again, and the second rotating shaft 340 takes the second pressing arm 360 away, and the CMT welding robot 1 avoids the position of the first pressing arm 350 to weld the workpiece, so that the parts to be welded between the two workpieces can form a complete weld.

[0033] Reference Figure 2, multiple groups of fixing components 300 are provided, and 4 groups are provided in the embodiment of the present application. The 4 groups of fixing components 300 are arranged in a circle, and the first rotating shafts 330 between two adjacent fixing components 300 are parallel to or perpendicular to each other. The adjusting base 320 is slidably mounted on the supporting plate 230, and the sliding direction of the adjusting base 320 and the length direction of the first rotating shaft 330 are perpendicular to each other. The supporting plate 230 is provided with a second fixing member for fixing the adjusting base 320.

[0034] Reference Figure 3 and Figure 4 The second fixing member is a telescopic rod 321 and a fixing bolt 322 for fixing the telescopic rod 321. One end of the telescopic rod 321 is fixedly connected to the positioning seat 310 near the adjustment base 320, and the other end of the telescopic rod 321 is fixedly connected to the adjustment base 320. The fixing bolt 322 is threadedly connected to the outer rod of the telescopic rod 321, and one end of the fixing bolt 322 is tightly pressed against the inner rod of the telescopic rod 321 to keep the telescopic rod 321 at a fixed length. When the position of the positioning block is fixed, the position of the adjustment base 320 can be adjusted or fixed. When the position of the positioning block is adjusted, due to the relationship between the telescopic rod 321, the adjustment base 320 decides whether to move with the positioning block according to demand.

[0035] Reference Figure 4 The first pressing arm 350 includes a first pressing rod 351 and a first connecting rod 352. The first pressing rod 351 is L-shaped, and the first connecting rod 352 is a straight rod, which is vertically arranged. One end of the first pressing rod 351 is fixedly connected to the upper end of the first connecting rod 352, and the other end of the first pressing rod 351 is fixedly connected to a pressing block 353. The lower end of the first connecting rod 352 is fixedly connected to a first sleeve 354, which is sleeved on the first rotating shaft 330. The first sleeve 354 and the first rotating shaft 330 are coaxially arranged. The first sleeve 354 can slide along the first rotating shaft 330 to change the distance between two adjacent first pressing arms 350. The first sleeve 354 can also be rotatably installed on the first rotating shaft 330 to change the angle of the first pressing arm 350. The first rotating shaft 330 is provided with a fastening assembly 400 for fixing the first sleeve 354.

[0036] Reference Figure 4The second pressing arm 360 includes a second pressing rod 361 and a second connecting rod 362. The second pressing rod 361 is also L-shaped. The second connecting rod 362 is also a straight rod and is vertically arranged. One end of the second pressing rod 361 is fixedly connected to the upper end of the second connecting rod 362, and the other end of the second pressing rod 361 is also fixedly connected to the pressing block 353. The lower end of the second connecting rod 362 is fixedly connected to the second sleeve 363, and the second sleeve 363 is sleeved on the second rotating shaft 340. The second sleeve 363 and the second rotating shaft 340 are coaxially arranged. The second sleeve 363 can slide along the second rotating shaft 340 to change the distance between two adjacent second pressing arms 360. The second sleeve 363 can also be rotatably installed on the second rotating shaft 340 to change the angle of the second pressing arm 360. The second rotating shaft 340 is provided with a fastening assembly 400 for fixing the second sleeve 363.

[0037] Reference Figure 5 and Figure 6 The fastening assembly 400 includes a guide bar 410. The first rotating shaft 330 and the second rotating shaft 340 are both provided with a receiving groove for receiving the guide bar 410. The guide bar 410 is fixedly installed in the receiving groove. The fastening assembly 400 also includes a connecting block 420 slidably installed on the guide bar 410. The guide bar 410 is provided with a guide groove 411. The connecting block 420 is fixedly connected with a sliding rod 421. The sliding rod 421 penetrates the guide bar 410 and is fixedly connected with a limiting block 422. The sliding rod 421 is threadedly connected with a fastening nut 430. The fastening nut 430 is used to fix the connecting block 420 on the guide bar 410. The limiting block 422 slides along the inner wall of the receiving groove. The fastening nut 430 is rotated to make the fastening nut 430 press against the guide bar 410, so that the connecting block 420 is fixedly installed on the guide bar 410. One first sleeve 354 or second sleeve 363 corresponds to two connecting blocks 420, and the two connecting blocks 420 can fix and clamp the sleeve. A fastening bolt 440 is threadedly connected to the connecting block 420, and one end of the fastening bolt 440 is pressed against the end of the sleeve to increase the installation firmness of the first sleeve 354 on the first rotating shaft 330, and increase the installation firmness of the second sleeve 363 on the second rotating shaft 340.

[0038] Reference Figure 4 If two workpieces to be welded together are stacked up and down on the support plate 230, the first workpiece 10 located at the bottom layer is first clamped and fixed by the positioning seat 310, and the first pressing arm 350 and the second pressing arm 360 rotate to press the second workpiece 20 located at the upper layer. When the first pressing arm 350 presses the workpiece, the first connecting rod 352 is in a vertical state, and when the second pressing arm 360 presses the workpiece, the second connecting rod 362 is in a vertical state.

[0039] Reference Figure 7If the first workpiece 10 of the two workpieces to be welded is fixed on the support plate 230 by the positioning seat 310, and the second workpiece 20 is attached to the side wall of the first workpiece 10, the rotation angle of the first sleeve 354 and the second sleeve 363 can be adjusted. When the first pressing arm 350 presses the workpiece, the first connecting rod 352 is in a horizontal state, and when the second pressing arm 360 presses the workpiece, the second connecting rod 362 is also in a horizontal state.

[0040] The rotational arrangement of the first pressing arm 350 and the second pressing arm 360 can exert a pressing effect on the workpiece at different angles, and the slidable state of the first pressing arm 350 and the second pressing arm 360 can adapt to workpieces of different sizes.

[0041] Reference Figure 8 and Fig. 9 Further, a baffle 500 is installed on the support plate 230, and the baffle 500 is located between the adjustment base 320 and the positioning seat 310. The baffle 500 is vertically arranged, and the baffle 500 and the support plate 230 maintain a vertical relationship, and the lower end of the baffle 500 is in contact with the telescopic rod 321. A limit rod 510 is slidably installed on the side of the baffle 500, and one end of the limit rod 510 extending into the baffle 500 is connected to the limit part, and the limit part limits the limit rod 510 from directly leaving the baffle 500, and the limit rod 510 can only slide along the baffle 500 or leave the baffle 500.

[0042] Reference Fig.10 , a plurality of limit rods 510 are provided, and the first sleeve 354 and the second sleeve 363 are both provided with slots 370 for inserting the limit rods 510, and two adjacent limit rods 510 are respectively plugged into the first sleeve 354 and the second sleeve 363. The slots 370 are distributed along the circumference of the first sleeve 354, and the slots 370 are opened at an angle of 180°. When the first rotating shaft 330 or the second rotating shaft 340 rotates, the limit rod 510 remains stationary. When the first pressing arm 350 presses the workpiece, one end wall of the slot 370 contacts the limit rod 510, so that the limit rod 510 cannot be disengaged upward.

[0043] Reference Fig.11 In order to further strengthen the connection between the limiting rod 510 and the sleeve, the end of the limiting rod 510 is fixedly connected with the insertion rod 520, and the insertion rod 520 and the limiting rod 510 are vertically connected. The sleeve is provided with a clearance groove 380 for the insertion rod 520 to be inserted or removed, and the inner wall of the slot 370 is provided with a slide groove 390 for the insertion rod 520 to slide. When the first sleeve 354 or the second sleeve 363 rotates, the insertion rod 520 and the inner wall of the slide groove 390 slide and contact. When one end wall of the slot 370 contacts the limiting rod 510, the insertion rod 520 is away from the clearance groove 380.

[0044] The baffle 500 is spliced, and the baffle 500 corresponds to the limiting rod 510 one by one. The baffle 500 forms a stable splice through the connection relationship between the limiting rod 510 and the first sleeve 354 and the second sleeve 363. If the workpiece to be welded is small in volume, when part of the first pressing arm 350 and the second pressing arm 360 are idle, the connecting block 420 corresponding to the idle first pressing arm 350 and the second pressing arm 360 is also in an idle state, and the connecting block 420 and the first connecting rod 352 and the second connecting rod 362 have a gap, and the corresponding baffle 500 can also be removed.

[0045] The fixing assembly 300 and the fastening assembly 400 of the embodiment of the present application are both modularly configured, and the fixing method and fixing position can be adjusted as needed, which can increase the fixing method and flexibility of the workpiece.

[0046] The implementation principle of the auxiliary device for CMT automatic welding in the embodiment of the present application is as follows: The workpiece is placed on the support plate 230, and the first pressing arm 350 and the second pressing arm 360 are enabled to accurately clamp the workpiece by adjusting the positions of the positioning seat 310 and the adjusting base 320; the first driving source and the second driving source are activated to rotate the first rotating shaft 330 and the second rotating shaft 340, thereby driving the first pressing arm 350 and the second pressing arm 360 to press the workpiece; by adjusting the rotation angle and speed of the driving source, the workpiece can be flexibly clamped and released; when the workpiece is stably clamped on the fixing assembly 300, the baffle 500 is also adjusted as needed. Installed on the support plate 230, the CMT welding robot 1 starts to perform welding operations on the workpiece. During the welding process, the baffle 500 can block part of the arc light. The first pressing arm 350 and the second pressing arm 360 press the workpiece alternately, which not only fixes the workpiece but also welds a complete weld on the workpiece. After completing the welding of one station, the rotating frame 200 rotates to make another station close to the CMT welding robot 1 to perform the welding operation of the next workpiece. At the same time, the operator can disassemble and replace the workpiece at the station where welding has been completed.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A CMT automatic welding auxiliary device, comprising a base (100) and a rotating frame (200) rotatably arranged on the base (100), wherein the rotating frame (200) is provided with a first station (210) and a second station (220) for clamping a workpiece on both sides, and a CMT welding robot (1) is fixedly arranged on one side of the rotating frame (200); the characteristics are: A support plate (230) is installed on both the first workstation (210) and the second workstation (220) of the rotating frame (200); a fixing assembly (300) for fixing a workpiece is installed on the support plate (230); the fixing assembly (300) comprises a positioning seat (310), an adjustment base (320), and a first rotating shaft (330) and a second rotating shaft (340) rotatably installed on the adjustment base (320); the positioning seat (310) is provided with a plurality of first rotating shafts (330) and second rotating shafts (340). 340), the first rotating shaft (330) is provided with a first pressing arm (350), the second rotating shaft (340) is provided with a second pressing arm (360), the first pressing arm (350) is provided with a spacing along the length direction of the first rotating shaft (330), the second pressing arm (360) is provided with a spacing along the length direction of the second rotating shaft (340), the first pressing arm (350) and the second pressing arm (360) are arranged in a staggered manner, and a spacing is left between adjacent first pressing arms (350) and second pressing arms (360); The adjusting base (320) is provided with a first driving source for driving the first rotating shaft (330) to rotate, and the first pressing arm (350) rotates with the first rotating shaft (330) to press or release the workpiece. The adjusting base (320) is provided with a second driving source for driving the second rotating shaft (340) to rotate, and the second pressing arm (360) rotates with the first rotating shaft (330) to press or release the workpiece. A plurality of fixing assemblies (300) are provided, the first rotating shafts (330) between two adjacent fixing assemblies (300) are parallel to or perpendicular to each other, the positioning seat (310) and the adjusting base (320) are slidably mounted on the supporting plate (230), the sliding direction of the adjusting base (320) and the length direction of the first rotating shaft (330) are perpendicular to each other, the supporting plate (230) is provided with a first fixing member for fixing the positioning seat (310), and the supporting plate (230) is provided with a second fixing member for fixing the adjusting base (320).

2. The CMT automatic welding auxiliary device according to claim 1, characterized in that: The first pressure arm (350) comprises a first pressure rod (351) and a first connecting rod (352), the first pressure rod (351) and the first connecting rod (352) are connected, the first connecting rod (352) is fixedly connected to a first sleeve (354), the first sleeve (354) is sleeved on the first rotating shaft (330), and the first sleeve (354) is slidably or rotatably installed on the first rotating shaft (330); the second pressure arm (360) comprises a second pressure rod (361) and a second connecting rod (362), the second pressure rod (361) and the second connecting rod (362) are connected, the second connecting rod (362) is fixedly connected to a second sleeve (363), and the second sleeve (363) is sleeved on the second rotating shaft (340); the auxiliary device also comprises a fastening assembly (400) for fixing the first sleeve (354) and the second sleeve (363).

3. The CMT automatic welding auxiliary device according to claim 2, characterized in that: The fastening assembly (400) comprises a guide bar (410), and a plurality of connecting blocks (420) slidably mounted on the guide bar (410); the connecting block (420) is fixedly connected to a sliding rod (421), the sliding rod (421) passes through the guide bar (410) and is fixedly connected to a limiting block (422); the sliding rod (421) is threadedly connected to a fastening nut (430), and the fastening nut (430) is used to fix the connecting block (420) on the guide bar (410); the first rotating shaft (330) and the second rotating shaft (340) are both provided with a receiving groove for accommodating the guide bar (410), the guide bar (410) is fixedly mounted in the receiving groove, and the limiting block (422) slides along the inner wall of the receiving groove.

4. The CMT automatic welding auxiliary device according to claim 2, characterized in that: A baffle (500) is mounted on the support plate (230), and the baffle (500) is located between the adjustment base (320) and the positioning base (310).

5. The CMT automatic welding auxiliary device according to claim 4, characterized in that: The baffle plate (500) and the support plate (230) maintain a vertical relationship. The side wall of the baffle plate (500) facing away from the support plate (230) is connected to a limit rod (510). A plurality of limit rods (510) are arranged at intervals along the baffle plate (500). Both the first sleeve (354) and the second sleeve (363) are provided with slots (370) for inserting the limit rods (510). The slots (370) are distributed along the circumferential direction of the first sleeve (354). When the first pressing arm (350) presses the workpiece, an end wall of the slot (370) contacts the limit rod (510).

6. The CMT automatic welding auxiliary device according to claim 5, characterized in that: The limiting rod (510) is fixedly connected to the insertion rod (520), the first sleeve (354) and the second sleeve (363) are both provided with a clearance groove (380) for the insertion of the insertion rod (520), and the inner groove wall of the slot (370) is provided with a sliding groove (390) for the sliding connection of the insertion rod (520).

7. The CMT automatic welding auxiliary device according to claim 6, characterized in that: The baffles (500) are spliced ​​together, and the baffles (500) correspond to the limiting rods (510) in a one-to-one manner.

8. The CMT automatic welding auxiliary device according to claim 1, characterized in that: The first fixing member is a screw rod (311), one end of the screw rod (311) is fixedly connected to the positioning seat (310), the other end of the screw rod (311) passes through the support plate (230) and is threadedly connected to a nut, and the support plate (230) is provided with a through groove (231) for the screw rod (311) to slide.

9. The CMT automatic welding auxiliary device according to claim 1, characterized in that: The second fixing member is a telescopic rod (321) and a fixing bolt (322) for fixing the telescopic rod (321); one end of the telescopic rod (321) is fixedly connected to a positioning seat (310) close to the adjustment base (320); and the other end of the telescopic rod (321) is fixedly connected to the adjustment base (320).

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