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CN-120662921-B - Automatic welding device for pipe head

CN120662921BCN 120662921 BCN120662921 BCN 120662921BCN-120662921-B

Abstract

The invention discloses an automatic tube head welding device, which relates to the technical field of tube head welding and comprises a supporting mechanism, a centering clamping mechanism and a centering clamping mechanism, wherein the supporting mechanism comprises a table body, the bottom of the table body is fixedly provided with a box body, the top of the table body is respectively fixedly provided with a cover body and a ring plate, the ring plate is positioned between the cover bodies, the centering clamping mechanism is arranged on the supporting mechanism and comprises a round shell rotating on the table body, a turntable is fixedly arranged on the round shell, and the bottom of the round shell is provided with a guide groove. According to the invention, the centering clamping mechanism is matched with the supporting mechanism, so that the centering can be realized by self-weight clamping, manual clamping operation is not needed, the automatic centering clamping can be realized by only placing and butting the pipe head and the welding pipe, the mechanical polishing operation and cooling of the welding part before and after welding can be realized by the conveying polishing mechanism matched with the cooling mechanism, the welding quality of the welding seam is improved, the risk of unfused is reduced, the stress concentration and fatigue cracking are reduced, and the follow-up corrosion prevention and the failure of the coating are avoided.

Inventors

  • ZHANG PENG
  • SUN XIAN
  • Wang hanxun
  • GONG QI

Assignees

  • 南京麦驰钛业有限公司

Dates

Publication Date
20260508
Application Date
20250710

Claims (9)

  1. 1. An automatic welding device for a tube head is characterized by comprising, The supporting mechanism (1) comprises a table body (11), wherein a box body (12) is fixed at the bottom of the table body (11), a cover body (13) and a ring plate (14) are respectively fixed at the top of the table body (11), and the ring plate (14) is positioned between the cover bodies (13); The centering clamping mechanism (2) is arranged on the supporting mechanism (1) and comprises a round shell (21) which rotates on the platform body (11), a rotary table (22) is fixed on the round shell (21), a guide groove (23) is formed in the bottom of the rotary table (22), a trigger piece (24) is arranged on the round shell (21) and the box body (12), an air bag (25) is arranged at the upper end of the trigger piece (24), a linkage piece (26) is arranged on the trigger piece (24) and the platform body (11), and a clamping piece (27) is arranged on the cover body (13) and matched with the linkage piece (26); the conveying polishing mechanism (3) is arranged on the supporting mechanism (1) and the round shell (21) and comprises a transmission piece (31) arranged on the annular plate (14) and the cover body (13), the cover body (13) is respectively provided with a linkage assembly (32) and an elastic piece (33), the linkage assembly (32) is arranged on the transmission piece (31) and the elastic piece (33), the elastic piece (33) is provided with a driving piece (34), and the driving piece (34) is respectively provided with a polishing wheel (35), a rubber wheel (36) and a control rod (37); the cooling mechanism (4) is arranged on the table body (11) and comprises a switching piece (41) fixed on the table body (11), the switching piece (41) is communicated with a communicating shell (42), one side of the communicating shell (42) is communicated with a bent pipe (43), one end of the bent pipe (43) is communicated with a spray head (44), and A welding mechanism (5) fixed on the table body (11); through the arrangement of the control rod (37), when the control rod (37) rotates along with the driving piece (34), the switching piece (41) on the cooling mechanism (4) is further acted, and the air outlet of the spray head (44) is switched to atomization water spraying; The trigger piece (24) comprises a liquid tank (24-1) fixed on the inner wall of the tank body (12), a piston (24-2) is arranged in the liquid tank (24-1) in a sliding mode, a vertical pipe (24-3) is arranged on the liquid tank (24-1) in a sliding mode, the lower end of the vertical pipe (24-3) is communicated with the piston (24-2) in a rotating mode, the upper end of the vertical pipe (24-3) penetrates through the round shell (21) to extend to the top and is fixedly connected with a round block (24-5), an air bag (25) is sleeved at the upper end of the vertical pipe (24-3), a supporting ring (24-6) is fixed at the bottom of the air bag (25), a vertical cylinder (24-7) is arranged at the bottom of the air bag (25), a short pipe (24-8) is communicated with the vertical pipe (24-3), the upper end of the short pipe is inserted into the vertical cylinder (24-7), a spring (24-9) is sleeved on the surface of the lower end of the vertical pipe (24-3), and a limit plate (24-10) is fixed on the round shell (24-3).
  2. 2. The automatic tube head welding device as claimed in claim 1, wherein the linkage member (26) comprises a connecting plate (26-1) sleeved on the surface of the vertical tube (24-3), the vertical plate (26-2) is slidably arranged on the table body (11), the lower end of the vertical plate (26-2) is fixed on the connecting plate (26-1), the upper end of the vertical plate (26-2) is fixedly provided with a guide plate I (26-3), the guide plate I (26-3) is provided with a guide hole I (26-4), the guide hole I (26-4) is slidably provided with a guide post I (26-5) and is fixedly arranged on the clamping member (27), the guide plate II (26-7) is fixedly arranged on the vertical plate (26-2), the guide plate II (26-7) is fixedly arranged on the surface of the elastic member (33), the guide plate II (26-7) is provided with a guide hole II (26-8), and the guide post II (26-6) is slidably arranged in the guide hole II (26-8).
  3. 3. The automatic tube head welding device according to claim 2, wherein the clamping piece (27) comprises a square tube (27-1) sliding on the cover body (13), a square plate (27-2) slides in one end of the square tube (27-1), the other end of the square tube is fixedly connected with the first guide post (26-5), one end of the square plate (27-2) is fixedly provided with a first arc plate (27-3), one side of the first arc plate (27-3) is provided with a rubber pad (27-4), one side of the rubber pad (27-4) is provided with a second arc plate (27-5), and one side of the second arc plate (27-5) is embedded with a second ball (27-6).
  4. 4. A pipe head automatic welding device according to claim 3, wherein the transmission part (31) comprises a moving plate (31-1) which slides on the cover body (13) and the annular plate (14), a moving column (31-2) is fixed on the moving plate (31-1), a rotating ring (31-3) is rotated on the table body (11) and sleeved on the outer surface of the round shell (21), a guide frame (31-4) is fixed on the outer surface of the rotating ring (31-3), the lower end of the moving column (31-2) slides in the guide frame (31-4), one upper end of the two moving columns (31-2) slides in the guide groove (23), and the other upper end of the two moving columns does not slide in the guide groove (23).
  5. 5. The automatic tube head welding device according to claim 4, wherein the linkage assembly (32) comprises a transmission module (32-1) and a turnover module (32-2), the transmission module (32-1) and the turnover module (32-2) are both installed in the cover body (13), the transmission module (32-1) is matched with the turnover module (32-2), the transmission module (32-1) is arranged on the movable plate (31-1), the transmission module comprises a cross rod (32-11) fixedly connected to the inner wall of the cover body (13), the cross rod (32-11) is rotated with a movable plate (32-12), two ends of the movable plate (32-12) are respectively provided with a first through hole (32-13) and a second through hole (32-14), a cylinder (32-15) is fixed on the movable plate (31-1), the cylinder one (32-15) slides in the first through hole (32-13), and a cylinder two (32-16) is fixed on the turnover module (32-2), and the cylinder two (32-16) slides in the second through hole (32-14).
  6. 6. The automatic tube head welding device according to claim 5, wherein the turnover module (32-2) is mounted on the elastic piece (33) and comprises a guide rod (32-21) fixed on the inner wall of the cover body (13), a sliding sleeve (32-22) is sleeved on the guide rod (32-21), a cylinder II (32-16) is fixed on one side of the sliding sleeve (32-22), a short column (32-23) is fixed on the top of the sliding sleeve (32-22), a rotary drum (32-24) is rotated on one side of the cover body (13), the rotary drum (32-24) is sleeved on the surface of the elastic piece (33), a driving groove (32-25) is formed in the outer surface of the rotary drum (32-24), the upper end of the short column (32-23) slides in the driving groove (32-25), and a limit bar (32-26) is fixed on the inner wall of the rotary drum (32-24).
  7. 7. The automatic tube head welding device as claimed in claim 6, wherein the elastic member (33) comprises a long column (33-1) sliding in the rotary drum (32-24), the long column (33-1) is fixed on the second guide plate (26-7), a square block (33-2) slides in the long column (33-1), a round rod (33-3) slides at one end of the long column (33-1), one end of the round rod (33-3) extends into the long column (33-1) and is fixed with the square block (33-2), the other end of the round rod (33-3) is fixed with the driving member (34), a limit groove (33-4) is formed in the long column (33-1), and a second spring (33-5) is fixed between the surface of the square block (33-2) and the inner wall of the long column (1).
  8. 8. The automatic tube head welding device as claimed in claim 7, wherein the driving member (34) comprises a U-shaped plate (34-1) fixed at one end of the round rod (33-3), a motor (34-2) is fixed on the U-shaped plate (34-1), a rotary tube (34-3) is rotatably arranged on the U-shaped plate (34-1), one end of the rotary tube (34-3) is fixed with an output shaft of the motor (34-2), the polishing wheel (35) and the rubber wheel (36) are sleeved on the outer surface of the rotary tube (34-3), a communication tube (34-4) is communicated between the rotary tube (34-3) and the rubber wheel (36), a connecting tube (34-5) is fixed on the U-shaped plate (34-1), one end of the connecting tube (34-5) is rotatably communicated with the rotary tube (34-3), a hose (34-6) is communicated with the other end of the connecting tube (34-5), the lower end of the hose (34-6) penetrates through the table body (11) and is communicated with the liquid tank (24-1), and the control rod (37) is fixedly connected to one side of the U-shaped plate (34-1).
  9. 9. The automatic tube head welding device as claimed in claim 1, wherein the switching piece (41) comprises a valve housing (41-1) fixed on the table body (11), the valve housing (41-1) is communicated with the communicating housing (42), a valve block (41-3) is arranged in the valve housing (41-1) in a sliding mode, a round hole I (41-4) and a round hole II (41-5) are respectively arranged on the valve block (41-3), a round hole III (41-6) and a round hole IV (41-7) are respectively arranged on the valve housing (41-1), the round hole I (41-4) is matched with the round hole III (41-6), a locating groove (41-8) is arranged in the valve housing (41-1), a locating block (41-9) is fixed on the valve block (41-3), the locating block (41-9) is arranged in the locating groove (41-8) in a sliding mode, and a spring is fixed between the locating block (41-9) and the surface of the locating block (41-8) and the inner wall (41-8).

Description

Automatic welding device for pipe head Technical Field The invention relates to the technical field of tube head welding, in particular to an automatic tube head welding device. Background The pipe head electric arc welding device mainly refers to automatic electric arc welding equipment for the tail end of a pipeline (comprising pipe butt joint, pipe connection with flanges, elbows and other pipe fittings), and particularly adopts argon arc welding as a mainstream technology, and has the characteristics of high welding precision, stable quality and wide application range. However, in practical application, the problems that mechanical polishing operation cannot be carried out on welding positions before and after welding in most cases, oil stains, rust or oxide layers on the welding positions are not removed due to non-polishing before welding, defects such as air holes and slag inclusion are generated on pollutant substances at high temperature, compactness and strength of welding seams are reduced, unfused risks are increased, non-polishing is carried out after welding, stress concentration points are formed by weld seam residual heights or surface irregularities, fatigue cracks are easily initiated and spread under pressure-bearing or vibration working conditions of pipelines, uniform anti-corrosion coatings are difficult to form on rough welding seam surfaces, coating adhesion is reduced, local corrosion is accelerated, and even if few welding is carried out manually, efficiency is low and quality is poor are still solved. Disclosure of Invention The present invention has been made in view of the above-described problems occurring in the conventional automatic pipe head welding apparatus. Therefore, the invention aims to solve the problems that in most cases, mechanical polishing operation cannot be carried out on welding positions before and after welding, defects such as air holes, slag inclusion and the like are generated by pollutants at high temperature due to the fact that the welding positions are not polished before welding, the compactness and strength of a welding line are reduced, the risk of unfused is increased, the welding line is not polished after welding, stress concentration points are formed by weld line surplus height or surface roughness, fatigue cracks are easy to initiate and spread, a uniform anti-corrosion coating is difficult to form on the surface of the rough welding line, and the adhesive force of the coating is reduced. In order to solve the technical problems, the invention provides the following technical proposal that the automatic tube head welding device comprises, The supporting mechanism comprises a table body, wherein a box body is fixed at the bottom of the table body, a cover body and a ring plate are respectively fixed at the top of the table body, and the ring plate is positioned between the cover bodies; The centering clamping mechanism is arranged on the supporting mechanism and comprises a round shell which rotates on the platform body, a turntable is fixed on the round shell, a guide groove is formed in the bottom of the round shell, a trigger piece is arranged on the round shell and the box body, an air bag is arranged at the upper end of the round shell, a linkage piece is arranged on the trigger piece and the platform body, and a clamping piece is arranged on the cover body and matched with the linkage piece; the conveying polishing mechanism is arranged on the supporting mechanism and the round shell and comprises a transmission piece arranged on the annular plate and the cover body, wherein the cover body is respectively provided with a linkage assembly and an elastic piece, the linkage assembly is arranged on the transmission piece and the elastic piece, the elastic piece is provided with a driving piece, and polishing wheels, rubber wheels and control rods are respectively arranged on the elastic piece; The cooling mechanism is arranged on the table body, comprises a switching piece fixed on the table body and communicated with a communicating shell, one side of the communicating shell is communicated with a bent pipe, one end of the communicating shell is communicated with a spray head, and And the welding mechanism is fixed on the table body. As a preferable scheme of the automatic tube head welding device, the triggering piece comprises a liquid tank fixed on the inner wall of the tank body, a piston is arranged in the liquid tank in a sliding mode, a vertical tube is arranged on the liquid tank in a sliding mode, the lower end of the vertical tube is communicated with the piston in a rotating mode, the upper end of the vertical tube penetrates through the round shell to extend to the top of the round shell and is fixedly connected with a round block, the air bag is sleeved on the upper end of the vertical tube, a supporting ring is fixed at the bottom of the vertical tube, the supporting ring is fixed on the upper end of the round shell, a vertic