Automatic welding device for metal labels for traffic and public management

Abstract

The invention relates to the technical field of plasma arc welding, and discloses an automatic metal label welding device for traffic and public management, which comprises a rack and a driving seat arranged at one end of the top surface of the rack, and a chuck is rotatably mounted at the other end of the top surface of the rack; a support is arranged at the position, between the driving base and the chuck, of the top face of the rack, a plasma arc welding arm is arranged on the side face of the rack, and a fixing frame corresponding to the chuck is fixedly installed on the top face of the rack. The bottom rod rotating power linkage transmission mechanism drives a first reciprocating lead screw to drive a feeding push plate to automatically push a reinforcing plate, manual feeding and calibration are not needed in cooperation with gravity blanking of a feeding box, limiting of a material blocking plate and reset positioning of an abutting plate, the reinforcing plate can be precisely attached to the preset welding position of the bottom rod, and the welding efficiency is improved. The problems of deviation and inclination caused by manual operation are effectively avoided, the labor intensity is reduced, the uniformity of the welding positions of all the reinforcing plates is guaranteed, and the stability of the product structure reinforcing effect is improved.

Description

Technical Field

[0001] This invention relates to the field of plasma arc welding technology, and in particular to an automatic welding device for metal signs used in traffic and public management. Background Technology

[0002] Automatic welding equipment for metal signs used in traffic and public management is a specialized device developed specifically for welding applications in the production of traffic signs, public management metal signs, and other similar products. It integrates automated control, precision mechanics, and welding processes. Its core function is to automatically complete the welding of various components of the metal sign through preset programs or real-time sensor feedback, thus replacing traditional manual welding. It is suitable for welding common metal materials used in signs, such as aluminum and stainless steel.

[0003] A search revealed that Chinese patent CN222448904U discloses a welding and processing mechanism for manufacturing metal nameplates. The mechanism includes a base, a movable plate on top of the base, a first sliding groove on the top of the base, an end cap at one end of the first sliding groove, a threaded rod passing through the end cap, and one end of the threaded rod passing through the bottom of the movable plate and being engaged at the other end of the first sliding groove. Multiple motors are located on one side of the base, and multiple slots are provided on the same side of the base, with each motor connected to the base via a slot. A movable structure is located at the rear of the base. When using this equipment, a metal nameplate can be placed on the base, and then the motors can be started to drive the threaded rod, thereby adjusting the position of the movable plate and fixing the metal nameplate. This structure makes the process of fixing the metal nameplate more automated and precise, improving production efficiency and product quality. However, in actual use, this solution still has the following shortcomings: In the manufacturing process of metal signs for traffic and public management, reinforcing plates are typically welded at the connection between the main body of the sign and the base pole to strengthen the structure. However, currently, the industry still largely relies on manual labor for the assembly and welding of these reinforcing plates. Operators must manually move the reinforcing plates to the pre-set connection positions between the sign and the base pole, aligning and calibrating them based on experience or simple tooling before welding with the help of welding equipment. This manual operation mode not only makes it difficult to accurately control the relative positional precision between the reinforcing plates and the sign / base pole, but also the rhythm of manual feeding and positioning cannot match the operating efficiency of the welding equipment, leading to interruptions in the entire welding process, excessive waiting time, and hindering the overall production efficiency of metal signs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing technology usually requires manual feeding and positioning assistance for the reinforcing plate, which is inconvenient for precise positioning and has low welding efficiency. To this end, we propose an automatic welding device for metal signs for traffic and public management.

[0005] To achieve the above objectives, this application adopts the following technical solution: an automatic welding device for metal signs used in traffic and public management, comprising a frame and a drive seat disposed at one end of the top surface of the frame, a chuck rotatably mounted at the other end of the top surface of the frame, a bracket disposed at the position between the drive seat and the chuck on the top surface of the frame, a plasma arc welding arm disposed on the side of the frame, a fixed frame corresponding to the chuck fixedly mounted on the top surface of the frame, a support plate fixedly mounted at the top of the fixed frame, a feeding box fixedly mounted on the top surface of the support plate, a feeding push plate adapted to the feeding box slidably mounted on the top surface of the support plate, a pushing component corresponding to the feeding push plate disposed on the top surface of the support plate, a transmission component corresponding to the chuck and the pushing component disposed at the end of the support plate, a fixed plate fixedly mounted on the side of the support plate, a dust collection cylinder fixedly mounted on the top surface of the fixed plate, a dust collection component disposed on the feeding box and the dust collection cylinder, and a linkage component adapted to the dust collection cylinder disposed on the top surface of the fixed plate.

[0006] Preferably, the pushing assembly includes a slot formed on the top surface of the support plate, a reciprocating screw is rotatably mounted on the inner wall of the slot, and the feeding push plate is screwed to the reciprocating screw. The top surface of the feeding push plate has two fixing slots, a shaft is rotatably mounted on the inner wall of the fixing slot, a stop plate is fixedly fitted on the outer wall of the shaft, a torsion spring is fitted on the end of the shaft, and the two ends of the torsion spring are fixedly connected to the shaft and the fixing slot, respectively.

[0007] Preferably, a baffle plate is fixedly installed at the end of the feeding push plate away from the clamp.

[0008] Preferably, the transmission assembly includes a connecting plate fixedly installed on the side of the support plate, a driven bevel gear rotatably installed on the side of the connecting plate, and the driven bevel gear is connected to the end of the reciprocating screw via a driven wheel and a synchronous belt. A driving bevel gear is rotatably installed at the end of the connecting plate via a rotating shaft, and the driving bevel gear meshes with the driven bevel gear. A transmission wheel is fixedly installed at the end of the rotating shaft.

[0009] Preferably, the connecting plate is L-shaped, and the outer wall of the transmission wheel fits against the outer wall of the chuck.

[0010] Preferably, the dust collection assembly includes two support rods fixedly installed on the side of the feeding box, and dust collection hoods are fixedly installed at the ends of the two support rods. The dust collection hoods are connected to the dust collection cylinder through a conduit. A drive shaft is provided through the end of the dust collection cylinder away from the conduit. A fan blade is fixedly installed at the end of the drive shaft located inside the dust collection cylinder. A coil spring is fitted on the drive shaft, and the two ends of the coil spring are fixedly connected to the drive shaft and the dust collection cylinder, respectively. An air outlet is provided at the end of the dust collection cylinder away from the conduit.

[0011] Preferably, the inner wall of the air outlet is provided with a filter cotton sheet, and the dust collection cover is inclined.

[0012] Preferably, the linkage assembly includes a linkage wheel fixedly mounted on the end of the drive shaft away from the fan blade. The top surface of the fixed plate has an installation groove. A vertical plate is fixedly mounted on the fixed plate at the end of the installation groove. A support rod is rotatably mounted on the top of the vertical plate. Two guide strips are symmetrically fixedly mounted on the outer wall of the support rod. A drive wheel is slidably mounted on the outer wall of the support rod and the two guide strips. A reciprocating screw two is rotatably mounted on the inner wall of the installation groove. Both ends of the reciprocating screw two are connected to the reciprocating screw one and the support rod respectively through pulleys and belts. A guide block is slidably mounted on the inner wall of the installation groove, and the guide block is screwed to the reciprocating screw two. Two fixed rods are fixedly mounted on the top surface of the guide block. A clamping wheel is rotatably mounted on the top of the fixed rod.

[0013] Preferably, the outer wall of the drive wheel is in contact with the outer wall of the linkage wheel, and the outer wall of the clamping wheel is in contact with the side of the drive wheel.

[0014] Preferably, the outer walls of both the drive wheel and the linkage wheel are provided with anti-slip textures.

[0015] The technical effects and advantages of this invention are as follows: In this invention, relying on the base rod rotation power linkage transmission mechanism, the reciprocating screw drives the feeding pusher plate to automatically push the reinforcing plate. With the gravity dropping of the feeding box, the limiting of the baffle plate and the resetting and positioning of the stop plate, there is no need for manual feeding and calibration. The reinforcing plate can accurately fit the preset welding position of the base rod, effectively avoiding the offset and tilting problems caused by manual operation. This not only reduces labor intensity, but also ensures the uniformity of the welding position of each reinforcing plate and improves the stability of the product structure reinforcement effect. In this invention, the processes of rotating the base rod, loading the reinforcing plate, welding, and resetting the push plate are linked by mechanical transmission, eliminating the need for additional power to drive auxiliary mechanisms. The loading, positioning, welding, and resetting processes are seamlessly connected, reducing process waiting time. At the same time, multiple reinforcing plates can be welded continuously at different positions on the base rod. Compared with the traditional manual assistance mode, this improves the overall work efficiency and meets the needs of large-scale and standardized production of metal signs. In this invention, the linkage between reciprocating screw one and reciprocating screw two enables the synchronous operation of the reinforcing plate loading and the fume adsorption mechanism. During welding, the dust suction cylinder generates negative pressure through the rotation of the fan blades, and the welding fumes are precisely adsorbed by the dust suction hood, filtered, and then discharged, avoiding dust pollution of the workshop environment. At the same time, it removes dust and impurities at the welding position in advance, reducing the impact of fumes and impurities on the weld, and further ensuring the weld strength and product quality. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the frame structure of the present invention; Figure 3 This is a schematic diagram of the fixing frame and support plate structure of the present invention; Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 5 This is an exploded view of the support plate and the feeding box of the present invention; Figure 6 for Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the fixing plate structure of the present invention; Figure 8 for Figure 7 Enlarged structural diagram at point C; Figure 9 This is an exploded view of the dust collection cylinder of the present invention.

[0017] Legend: 11. Frame; 12. Drive base; 13. Chuck; 14. Bracket; 15. Plasma arc welding arm; 21. Fixing frame; 22. Support plate; 23. Feed box; 31. Slot; 32. Reciprocating screw one; 33. Feed push plate; 34. Fixing slot; 35. Shaft; 36. Support plate; 37. Torsion spring; 38. Stop plate; 41. Connecting plate; 42. Driven bevel gear; 43. Drive bevel gear 44. Drive wheel; 51. Fixed plate; 52. Dust suction cylinder; 53. Support rod; 54. Dust suction hood; 55. Conduit; 56. Drive shaft; 57. Fan blade; 58. Coil spring; 59. Air outlet; 61. Linkage wheel; 62. Vertical plate; 63. Support rod; 64. Guide strip; 65. Drive wheel; 66. Mounting groove; 67. Reciprocating lead screw II; 68. Guide block; 69. Fixed rod; 610. Clamping wheel. Detailed Implementation

[0018] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0019] Reference Figures 1-3As shown, the present invention provides a technical solution: an automatic welding device for metal signs used in traffic and public management, including a frame 11 and a drive seat 12 disposed at one end of the top surface of the frame 11. A chuck 13 is rotatably mounted at the other end of the top surface of the frame 11. A bracket 14 is disposed on the top surface of the frame 11 between the drive seat 12 and the chuck 13. A plasma arc welding arm 15 is disposed on the side of the frame 11. A fixing frame 21 corresponding to the chuck 13 is fixedly mounted on the top surface of the frame 11. A support plate 22 is fixedly mounted on the top of the fixing frame 21. A feeding box 23 is fixedly mounted on the top surface of the support plate 22. A feeding push plate 33 adapted to the feeding box 23 is slidably mounted on the top surface of the support plate 22. A fixing plate 51 is fixedly mounted on the side of the support plate 22. A dust suction cylinder 52 is fixedly mounted on the top surface of the fixing plate 51.

[0020] In use, the operator first needs to use the feeding device to feed the base rod of the metal nameplate onto the bracket 14, and connect both ends to the clamp 13 and the drive seat 12 respectively to complete the feeding of the nameplate base rod. The nameplate base rod has already undergone preliminary processing. It is mainly used for welding reinforcing plates on the frame 11. Before welding, the operator needs to place the reinforcing plates in the feeding box 23 in an orderly manner. Under the action of gravity, the bottom reinforcing plate can be positioned on the feeding push plate 33. Figure 5 As shown.

[0021] Reference Figures 3-6 As shown, the top surface of the support plate 22 is provided with a pushing component corresponding to the feeding push plate 33. The pushing component includes a slot 31 opened on the top surface of the support plate 22. A reciprocating screw 32 is rotatably installed on the inner wall of the slot 31, and the feeding push plate 33 is screwed to the reciprocating screw 32. Two fixing slots 34 are opened on the top surface of the feeding push plate 33. A shaft 35 is rotatably installed on the inner wall of the fixing slot 34. A stop plate 36 is fixedly fitted on the outer wall of the shaft 35. A torsion spring 37 is fitted on the end of the shaft 35, and the two ends of the torsion spring 37 are fixedly connected to the shaft 35 and the fixing slot 34 respectively. A baffle plate 38 is fixedly installed on the end of the feeding push plate 33 away from the chuck 13. The end of the support plate 22 is provided with a transmission component corresponding to the chuck 13 and the push assembly. The transmission component includes a connecting plate 41 fixedly installed on the side of the support plate 22. The connecting plate 41 is L-shaped. A driven bevel gear 42 is rotatably installed on the side of the connecting plate 41. The driven bevel gear 42 is connected to the end of the reciprocating screw 32 through a driven wheel and a synchronous belt. A drive bevel gear 43 is rotatably installed on the end of the connecting plate 41 through a rotating shaft. The drive bevel gear 43 meshes with the driven bevel gear 42. A transmission wheel 44 is fixedly installed on the end of the rotating shaft. The outer wall of the transmission wheel 44 is in contact with the outer wall of the chuck 13.

[0022] When the drive seat 12 is opened, it drives the base rod and the chuck 13 to rotate. When the chuck 13 rotates, it drives the transmission wheel 44 to rotate. The transmission wheel 44 is connected to the drive bevel gear 43 through a rotating shaft, so the drive bevel gear 43 can rotate synchronously. The driven bevel gear 42 meshes with the drive bevel gear 43. The driven bevel gear 42 is connected to the reciprocating screw 32 through a driven wheel and a synchronous belt. Therefore, when the drive bevel gear 43 rotates, it drives the reciprocating screw 32 to rotate in the slot 31. The feeding push plate 33 is screwed to the reciprocating screw 32, so the rotation of the reciprocating screw 32 drives the upper... The feeding plate 33 slides on the top surface of the support plate 22, thereby feeding the reinforcing plate thereon. As the chuck 13 rotates, the feeding plate 33 can move the reinforcing plate to the outer wall of the base rod and fit it against it. At this time, the drive seat 12 stops rotating, and the plasma arc welding arm 15 opens to perform plasma arc welding on the connection between the reinforcing plate and the base rod, so that the reinforcing plate completes the plasma arc welding. When the feeding plate 33 feeds the reinforcing plate, and the reinforcing plate separates from the feeding box 23, the next reinforcing plate can slide onto the baffle plate 38 under the action of gravity, and the previous reinforcing plate is then plasma arc welded. After welding is completed, the drive seat 12 rotates to change the position of the bottom rod, which can then drive the reciprocating screw 32 to rotate via the chuck 13. Upon rotation again, the reciprocating screw 32 can drive the feeding push plate 33 to slide back and reset. At this time, due to the interaction between the baffle plate 38 and the outlet shape of the feeding box 23, the reinforcing plate on the baffle plate 38 cannot move and can finally be placed on the feeding push plate 33. During the reverse sliding of the feeding push plate 33, when the abutment plate 36 in the fixed groove 34 contacts the reinforcing plate, it can be rotated into the fixed groove 34 via the shaft 35, so that the abutment plate 36 can pass through the reinforcing plate. After passing the reinforcing plate, the abutment plate 36 and the shaft 35 rotate in opposite directions under the action of the torsion spring 37. The abutment plate 36 is in a vertical state so that the reinforcing plate can be pushed when the feeding push plate 33 feeds again, thus realizing feeding. Under the joint action of the feeding box 23 and the abutment plate 36, the reinforcing plate can be positioned when it is fed, ensuring the accuracy of the position when the reinforcing plate is welded to the bottom rod. The rotation of the chuck 13 can drive the bottom rod to rotate and realize the feeding of the reinforcing plate, so that the reinforcing plate can be welded to different positions on the outer wall of the bottom rod under the action of the plasma arc welding arm 15, realizing the automatic welding of metal nameplates.

[0023] Reference Figure 3 , Figure 5 , Figure 7 and Figure 9As shown, a dust collection assembly is provided on the feeding box 23 and the dust collection cylinder 52. The dust collection assembly includes two support rods 53 fixedly installed on the side of the feeding box 23. A dust collection hood 54 is fixedly installed at the end of the two support rods 53. The dust collection hood 54 is inclined. The dust collection hood 54 and the dust collection cylinder 52 are connected by a conduit 55. A drive shaft 56 is provided through the end of the dust collection cylinder 52 away from the conduit 55. A fan blade 57 is fixedly installed at the end of the drive shaft 56 located inside the dust collection cylinder 52. A coil spring 58 is fitted on the drive shaft 56, and the two ends of the coil spring 58 are fixedly connected to the drive shaft 56 and the dust collection cylinder 52 respectively. An air outlet 59 is opened at the end of the dust collection cylinder 52 away from the conduit 55. A filter cotton sheet is provided on the inner wall of the air outlet 59.

[0024] Reference Figure 7 and Figure 8 As shown, the top surface of the fixing plate 51 is provided with a linkage assembly adapted to the vacuum cleaner 52. The linkage assembly includes a linkage wheel 61 fixedly mounted on the end of the drive shaft 56 away from the fan blade 57. The top surface of the fixing plate 51 has a mounting groove 66. A vertical plate 62 is fixedly mounted on the fixing plate 51 at the end of the mounting groove 66. A support rod 63 is rotatably mounted on the top of the vertical plate 62. Two guide strips 64 are symmetrically fixedly mounted on the outer wall of the support rod 63. A drive wheel 65 is slidably mounted on the outer wall of the support rod 63 and the two guide strips 64. The outer wall of the drive wheel 65 is parallel to the outer wall of the linkage wheel 61. The drive wheel 65 and the linkage wheel 61 are fitted together. The outer walls of both the drive wheel 65 and the linkage wheel 61 are provided with anti-slip texture. The inner wall of the mounting groove 66 is rotatably mounted with a reciprocating screw 67. Both ends of the reciprocating screw 67 are connected to the reciprocating screw 32 and the support rod 63 respectively through pulleys and belts. The inner wall of the mounting groove 66 is slidably mounted with a guide block 68, and the guide block 68 is screwed to the reciprocating screw 67. Two fixing rods 69 are fixedly mounted on the top surface of the guide block 68. The top of the fixing rod 69 is rotatably mounted with a clamping wheel 610. The outer wall of the clamping wheel 610 is fitted with the side of the drive wheel 65.

[0025] During the rotation of reciprocating screw 32, reciprocating screw 67 is driven to rotate via pulley and belt. When reciprocating screw 67 rotates, it drives guide block 68 to slide along mounting groove 66, and pushes drive wheel 65 via fixed rod 69 and clamping wheel 610, causing drive wheel 65 to slide along support rod 63 and guide bar 64. Simultaneously, the rotation of reciprocating screw 67 drives support rod 63 to rotate via pulley and belt. Under the action of guide bar 64, support rod 63 drives drive wheel 65 to rotate, allowing drive wheel 65 to move and rotate simultaneously. When drive wheel 65 contacts linkage wheel 61, it drives linkage wheel 61 to rotate and stores force in coil spring 58. When drive wheel 65 moves to the point of separation from linkage wheel 61, the coil spring 58... Under the action of the drive shaft 56, the fan blade 57 can rotate rapidly, which makes the dust collection cylinder 52 in a negative pressure state so that the welding position can be sucked through the duct 55 and the dust collection hood 54 to avoid affecting the workshop environment. At the same time, when the air is discharged from the dust collection cylinder 52 through the air outlet 59, it can be filtered by the filter cotton sheet to prevent dust from overflowing. During the feeding process of the feeding push plate 33, the drive shaft 56 stores power. During the welding process after the feeding is completed, the drive wheel 65 and the linkage wheel 61 separate, and the dust collection cylinder 52 starts the dust collection operation. During the reset process of the feeding push plate 33, the drive shaft 56 stores power again. When the feeding push plate 33 feeds again, the dust collection cylinder 52 continues the dust collection operation, pre-treating the dust at the welding position of the bottom rod outer wall to ensure the firmness of the subsequent welding.

[0026] Working principle: In use, the operator first needs to use the feeding device to feed the base rod of the metal sign onto the support 14. Both ends are connected to the clamp 13 and the drive seat 12 respectively, thus completing the feeding of the base rod. The base rod has already undergone preliminary processing. The main purpose of welding reinforcing plates is on the frame 11. Before welding, the operator needs to arrange the reinforcing plates orderly in the feeding box 23. Under the action of gravity, the bottom reinforcing plate can be positioned on the feeding push plate 33. Figure 5 As shown, the drive seat 12 can be turned on to drive the bottom rod and the chuck 13 to rotate. When the chuck 13 rotates, it can drive the transmission wheel 44 to rotate. The transmission wheel 44 is connected to the drive bevel gear 43 through a rotating shaft, so the drive bevel gear 43 can rotate synchronously. The driven bevel gear 42 meshes with the drive bevel gear 43. The driven bevel gear 42 is connected to the reciprocating screw 32 through a driven wheel and a synchronous belt. So when the drive bevel gear 43 rotates, it can drive the reciprocating screw 32 to rotate in the slot 31. The feeding push plate 33 is screwed to the reciprocating screw 32. So when the reciprocating screw 32 rotates, it can drive the feeding push plate 33 to slide on the top surface of the support plate 22, so that the reinforcing plate on it can be fed. As the chuck 13 rotates, the loading push plate 33 can move the reinforcing plate to the outer wall of the bottom rod and fit it. At this time, the drive seat 12 stops rotating, and the plasma arc welding arm 15 opens to perform plasma arc welding on the connection between the reinforcing plate and the bottom rod, so that the reinforcing plate completes the plasma arc welding. When the loading push plate 33 drives the reinforcing plate to be loaded, when the reinforcing plate separates from the loading box 23, the next reinforcing plate can slide onto the baffle plate 38 under the action of gravity. As the plasma arc welding of the previous reinforcing plate is completed, the drive seat 12 rotates to change the position of the bottom rod, so that the chuck 13 can continue to drive the reciprocating screw 32 to rotate. When it rotates again, the reciprocating screw 32 can drive the loading push plate 33 to slide back and reset. At this time, under the action of the shape of the baffle plate 38 and the outlet of the loading box 23, the reinforcing plate on the baffle plate 38 cannot be lifted. The plate can be moved and eventually placed on the feeding push plate 33. During the reverse sliding process of the feeding push plate 33, when the abutment plate 36 in the fixed groove 34 contacts the reinforcing plate, it can be rotated into the fixed groove 34 through the shaft 35 so that the abutment plate 36 can pass through the reinforcing plate. After passing through the reinforcing plate, the abutment plate 36 and the shaft 35 rotate in opposite directions under the action of the torsion spring 37. The abutment plate 36 is in a vertical state so that the feeding push plate 33 can push the reinforcing plate when feeding again to realize feeding. Under the joint action of the feeding box 23 and the abutment plate 36, the reinforcing plate can be positioned when it is fed, ensuring the accuracy of the position when the reinforcing plate is welded to the bottom rod. The rotation of the chuck 13 can drive the bottom rod to rotate and realize the feeding of the reinforcing plate, so that the reinforcing plate can be welded to different positions on the outer wall of the bottom rod under the action of the plasma arc welding arm 15, realizing the automatic welding of metal nameplates. During the rotation of reciprocating screw 32, reciprocating screw 67 is driven to rotate via pulley and belt. When reciprocating screw 67 rotates, it drives guide block 68 to slide along mounting groove 66, and pushes drive wheel 65 via fixed rod 69 and clamping wheel 610, causing drive wheel 65 to slide along support rod 63 and guide bar 64. Simultaneously, the rotation of reciprocating screw 67 drives support rod 63 to rotate via pulley and belt. Under the action of guide bar 64, support rod 63 drives drive wheel 65 to rotate, allowing drive wheel 65 to move and rotate simultaneously. When drive wheel 65 contacts linkage wheel 61, it drives linkage wheel 61 to rotate and stores force in coil spring 58. When drive wheel 65 moves to the point of separation from linkage wheel 61, the coil spring 58... Under the action of the drive shaft 56, the fan blade 57 can rotate rapidly, which makes the dust collection cylinder 52 in a negative pressure state so that the welding position can be sucked through the duct 55 and the dust collection hood 54 to avoid affecting the workshop environment. At the same time, when the air is discharged from the dust collection cylinder 52 through the air outlet 59, it can be filtered by the filter cotton sheet to prevent dust from overflowing. During the feeding process of the feeding push plate 33, the drive shaft 56 stores power. During the welding process after the feeding is completed, the drive wheel 65 and the linkage wheel 61 separate, and the dust collection cylinder 52 starts the dust collection operation. During the reset process of the feeding push plate 33, the drive shaft 56 stores power again. When the feeding push plate 33 feeds again, the dust collection cylinder 52 continues the dust collection operation, pre-treating the dust at the welding position of the bottom rod outer wall to ensure the firmness of the subsequent welding.

[0027] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. An automatic welding device for metal signs used in traffic and public management, comprising a frame (11) and a drive seat (12) disposed at one end of the top surface of the frame (11), a chuck (13) rotatably mounted at the other end of the top surface of the frame (11), a bracket (14) disposed at the position between the drive seat (12) and the chuck (13) on the top surface of the frame (11), and a plasma arc welding arm (15) disposed on the side of the frame (11), characterized in that: The top surface of the rack (11) is fixedly provided with a fixed frame (21) corresponding to the chuck (13), the top end of the fixed frame (21) is fixedly provided with a supporting plate (22), the top surface of the supporting plate (22) is fixedly provided with a feeding box (23), the top surface of the supporting plate (22) is slidably provided with a feeding push plate (33) matched with the feeding box (23), the top surface of the supporting plate (22) is provided with a pushing assembly corresponding to the feeding push plate (33), the end of the supporting plate (22) is provided with a transmission assembly corresponding to the chuck (13) and the pushing assembly, the side surface of the supporting plate (22) is fixedly provided with a fixed plate (51), the top surface of the fixed plate (51) is fixedly provided with a dust collection cylinder (52), the feeding box (23) and the dust collection cylinder (52) are provided with a dust collection assembly, and the top surface of the fixed plate (51) is provided with a linkage assembly matched with the dust collection cylinder (52).

2. The traffic and public management metal sign automatic welding device according to claim 1, characterized in that: The pushing assembly comprises a groove (31) formed in the top surface of the supporting plate (22), a reciprocating lead screw (32) is rotatably arranged on the inner wall of the groove (31), the feeding push plate (33) is screwed with the reciprocating lead screw (32), two fixed grooves (34) are formed in the top surface of the feeding push plate (33), a shaft rod (35) is rotatably arranged on the inner wall of the fixed groove (34), a resisting plate (36) is fixedly sleeved on the outer wall of the shaft rod (35), a torsional spring (37) is sleeved on the end of the shaft rod (35), and the two ends of the torsional spring (37) are fixedly connected with the shaft rod (35) and the fixed groove (34) respectively.

3. The traffic and public management metal sign automatic welding device according to claim 1, characterized in that: The end of the feeding push plate (33) away from the chuck (13) is fixedly provided with a material blocking plate (38).

4. The traffic and public management metal sign automatic welding device according to claim 2, characterized in that: The transmission assembly comprises a connecting plate (41) fixedly arranged on the side surface of the supporting plate (22), a driven bevel gear (42) is rotatably arranged on the side surface of the connecting plate (41), the end of the reciprocating lead screw (32) is drivingly connected with the driven bevel gear (42) through a driven wheel and a synchronous belt, a driving bevel gear (43) is rotatably arranged on the end of the connecting plate (41) through a rotating shaft, the driving bevel gear (43) is engaged with the driven bevel gear (42), and the end of the rotating shaft is fixedly provided with a transmission wheel (44).

5. The traffic and public management metal sign automatic welding device according to claim 4, characterized in that: The connecting plate (41) is L-shaped, and the outer wall of the transmission wheel (44) is attached to the outer wall of the chuck (13).

6. The traffic and public management metal sign automatic welding device according to claim 1, characterized in that: The dust collection assembly comprises two supporting rods (53) fixedly arranged on the side surface of the feeding box (23), a dust collection cover (54) is fixedly arranged on the end of each supporting rod (53), the dust collection cover (54) is communicated with the dust collection cylinder (52) through a duct (55), a transmission shaft (56) is penetratingly arranged on the end of the dust collection cylinder (52) away from the duct (55), a fan blade (57) is fixedly arranged on the end of the transmission shaft (56) inside the dust collection cylinder (52), a coil spring (58) is sleeved on the transmission shaft (56), the two ends of the coil spring (58) are fixedly connected with the transmission shaft (56) and the dust collection cylinder (52) respectively, and an air outlet (59) is formed in the end of the dust collection cylinder (52) away from the duct (55).

7. The traffic and public management metal sign automatic welding device according to claim 6, characterized in that: The inner wall of the air outlet (59) is provided with filter cotton, and the dust cover (54) is arranged obliquely.

8. The traffic and public management metal sign automatic welding device according to claim 6, characterized in that: The linkage assembly comprises a linkage wheel (61) fixedly sleeved on the transmission shaft (56) away from the fan blade (57), the top surface of the fixed plate (51) is provided with a mounting groove (66), the fixed plate (51) is fixedly installed at the end position of the mounting groove (66) and provided with a vertical plate (62), the top end of the vertical plate (62) is rotatably installed with a supporting rod (63), the outer wall of the supporting rod (63) is symmetrically fixedly installed with two guide strips (64), the outer wall of the supporting rod (63) and the two guide strips (64) is slidably sleeved with a driving wheel (65), the inner wall of the mounting groove (66) is rotatably installed with a reciprocating lead screw two (67), the two ends of the reciprocating lead screw two (67) are respectively connected with the reciprocating lead screw one (32) and the supporting rod (63) through a belt wheel and a belt, the inner wall of the mounting groove (66) is slidably installed with a guide block (68), and the guide block (68) is screwed with the reciprocating lead screw two (67), the top surface of the guide block (68) is fixedly installed with two fixed rods (69), and the top end of the fixed rod (69) is rotatably installed with a clamping wheel (610).

9. The traffic and public management metal sign automatic welding device according to claim 8, characterized in that: The outer wall of the driving wheel (65) is attached to the outer wall of the linkage wheel (61), and the outer wall of the clamping wheel (610) is attached to the side of the driving wheel (65).

10. The traffic and public management metal sign automatic welding device according to claim 8, characterized in that: The outer wall of the driving wheel (65) and the outer wall of the linkage wheel (61) are both provided with anti-skid lines.

Images