Longitudinal welded pipe inner wall welding seam guiding and edge closing device

Abstract

The invention discloses a longitudinal welded pipe inner wall welding seam guiding and edge closing device, and relates to the technical field of welding equipment.The longitudinal welded pipe inner wall welding seam guiding and edge closing device comprises a device base, a first mounting frame and a welding mechanism, an inner wall grinding structure is mounted on the first mounting frame, and the inner wall grinding structure comprises a second pneumatic cylinder, an air guiding assembly and an inner wall grinding head; a pipe blank clamping structure is arranged on one side of the welding mechanism and comprises a transmission assembly and a double-shaft hydraulic cylinder, the transmission assembly drives a fifth linkage frame, clamping assemblies are arranged at the two ends of the fifth linkage frame and the two ends of the double-shaft hydraulic cylinder correspondingly, and a rotating inner wall grinding head grinds the inner wall of a pipe blank. The welding position of the inner wall of the pipe blank is ground and polished, in the process of machining the longitudinal welded pipe in a welding machining mode, protrusions, generated due to welding, of the inner wall of the longitudinal welded pipe are ground by means of the deformable characteristic of the pipe blank, the inner wall of the long and narrow seam welded pipe does not need to be subjected to secondary treatment and machining subsequently, labor cost input is reduced, and the machining cost of the seam welded pipe is controlled.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically a guide and edge-gathering device for the inner wall weld of a straight seam welded pipe. Background Technology

[0002] Straight seam welded pipe, as the name suggests, refers to welded steel pipe with a weld seam that is a straight line. Its core process involves processing flat plates (steel coils) into pipes of circular or other cross-sections through steps such as forming, welding, and finishing.

[0003] However, during the production of straight seam welded pipes, for small-diameter welded pipes, workers use handheld electric grinders to repair the part of the pipe a certain distance from the end. The part farther from the end cannot be repaired and can only be used at a lower grade, which affects product quality, increases processing costs, and causes economic losses.

[0004] For example, the invention with patent application number 202010982654.4 discloses a pipe blank edge-gathering device for straight seam welded pipe welding, including a welding worktable and a forming roller, a welding head and a pressing roller fixedly arranged in sequence on the upper part of the welding worktable. An edge-gathering mechanism is provided between the forming roller and the welding head. The edge-gathering mechanism includes a pre-treatment base frame and a linkage base frame. The pre-treatment base frame is fixedly arranged on the welding worktable. An inner support platform is fixedly connected to the bottom of the inner side of the pre-treatment base frame. A bottom support frame is fixedly connected to the inner support platform. A caster is rotatably connected to the upper end of the bottom support frame.

[0005] Taking the above-mentioned pipe blank edge-gathering device for straight seam welded pipe as an example, during the production process of straight seam welded pipe, it is impossible to grind the welded part of the inner wall of the straight seam welded pipe. It is necessary to invest manpower and materials later to process the inner wall of the straight seam welded pipe, or to downgrade the straight seam welded pipe for use. Summary of the Invention

[0006] The purpose of this invention is to provide a guide and edge-gathering device for the inner wall weld of a straight seam welded pipe, so as to solve the problems mentioned in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a straight seam welded pipe inner wall weld seam guiding and edge-gathering device, comprising a device base, a mounting frame 1, and a welding mechanism. An inner wall grinding structure is mounted on the mounting frame 1. The inner wall grinding structure includes a pneumatic cylinder 2, a gas guiding component, and an inner wall grinding head. A pipe blank clamping structure is provided on one side of the welding mechanism. The pipe blank clamping structure includes a transmission component and a dual-axis hydraulic cylinder. The transmission component drives a linkage frame 5. Clamping components are provided at both ends of the linkage frame 5 and both ends of the dual-axis hydraulic cylinder. An outer wall grinding structure is provided at the bottom of the pipe blank clamping structure. The outer wall grinding structure includes two U-shaped mounting seats 2. A positioning component is provided between the two U-shaped mounting seats 2 and the device base. A drive gear 2 and two electromagnets are provided at the top of each of the two U-shaped mounting seats 2. A missing gear meshes on opposite sides of each of the two drive gear 2.

[0008] Preferably, the mounting bracket is fixedly installed on the top of the device base, the welding mechanism is installed on one side of the device base, a pneumatic cylinder is fixedly inserted on the device base, a linkage frame three is fixedly connected to the piston end of the pneumatic cylinder, the linkage frame three is set at the bottom of the device base, a plurality of V-shaped frames are inserted on one side of the top of the device base, the bottom end of the V-shaped frame is fixedly connected to the linkage frame three, and guide rollers are rotatably installed on both sides inside the V-shaped frame.

[0009] Preferably, the air guiding assembly includes a main air chamber, an air guiding branch pipe, a drive motor, and an air extraction box. Rubber parts are fixedly connected to both sides of the main air chamber. An air guiding pipe is fixedly connected to the top of the main air chamber. A telescopic air guiding pipe is fixedly connected to the top of the air guiding pipe. An air extraction pipe is fixedly connected to the top of the telescopic air guiding pipe. Sliding arms are fixedly connected to both sides of the main air chamber. The sliding arms are slidably connected to a mounting frame. A linkage frame is fixedly connected between the two sliding arms. A pneumatic cylinder is fixedly mounted on the mounting frame. The piston end of the pneumatic cylinder is fixedly connected to the linkage frame.

[0010] Preferably, the air guide branch pipe is fixedly connected to the bottom of the outer side of the main air chamber. One end of the air guide branch pipe is fixedly connected to a rotary joint, and one end of the rotary joint is rotatably connected to a rotary joint. One side of the rotary joint is fixedly connected to an air extraction box. Multiple air suction holes are opened on the outer side of the air extraction box. One end of the air extraction box is threaded with an external threaded part. An internal filling box is provided inside the air extraction box. Multiple fixed short rods are fixedly connected between the internal filling box and the inner wall of the air extraction box.

[0011] Preferably, the suction box has two threaded holes, and a grinding head mounting seat is sleeved on the outside of the suction box. The grinding head mounting seat is fixedly connected to the grinding head on the inner wall. Two external threaded parts are threadedly connected to the grinding head mounting seat. The external threaded parts correspond one-to-one with the threaded holes. A filter plate is fixed inside the suction box on the side near the rotary joint. Multiple filter plates are provided on the side of the filter plate away from the rotary joint. The filter plates are fixedly connected to the inner wall of the suction box.

[0012] Preferably, the drive motor is fixedly installed on the outside of the air guide branch pipe, the gearbox is fixedly installed on the outside of the air guide branch pipe, the output end of the drive motor is fixedly connected to the input end of the gearbox, the output end of the gearbox is fixedly connected to a power output shaft, the outside of the power output shaft is fixedly connected to a drive gear, the outside of the drive gear is meshed with a gear ring, the gear ring is fixedly connected to a linkage frame, and the linkage frame is fixedly connected to the grinding head mounting seat.

[0013] Preferably, the clamping assembly includes a mounting frame two, on which a pneumatic cylinder three and two spring-loaded telescopic rods are fixedly mounted. An externally threaded component three is fixedly connected to the piston end of the pneumatic cylinder three, and an internally threaded tube is sleeved on the outer side of the externally threaded component three. An insertion rod one is fixedly connected to the piston end of the spring-loaded telescopic rod one, and an insertion tube is sleeved on the outer side of the insertion rod one. An arc-shaped clamping plate is fixedly connected between the insertion tube and the internally threaded tube. A linkage frame four is fixedly connected between the two insertion rods one. Two mounting frames two in the two clamping assemblies on the left side are respectively fixedly mounted to the two piston ends of the dual-axis hydraulic cylinder. A support guide frame is fixedly connected between the outer side of the dual-axis hydraulic cylinder and the device base, and the support guide frame passes through the mounting frame two.

[0014] Preferably, the transmission assembly includes a first forward and reverse motor and a second speed changer fixedly connected to the top of the device base. The output end of the first forward and reverse motor is fixedly connected to the input end of the second speed changer. A transmission screw is fixedly connected to the output end of the second speed changer. A guide slide is provided on one side of the transmission screw. Screw support seats are rotatably installed at both ends of the outer side of the transmission screw and the guide slide. The screw support seats are fixedly installed on the top of the device base. A linkage frame five is threaded onto the outer side of the transmission screw. The guide slide passes through the linkage frame five. Support wheels are fixedly connected to both ends of the linkage frame five. The two support wheels are respectively fixedly connected to two mounting frames two in the two clamping assemblies on the right side.

[0015] Preferably, the control assembly includes a U-shaped mounting base 1, which is fixedly installed at the bottom of the device base. A pneumatic cylinder 4 and two telescopic rods 2 are fixedly mounted on the U-shaped mounting base 1. A linkage frame 6 is fixedly connected to the piston end of the pneumatic cylinder 4. A pneumatic cylinder 5 is fixedly mounted on the linkage frame 6. The two piston ends of the pneumatic cylinder 5 are respectively fixedly connected to the two U-shaped mounting bases 2. Two telescopic rods 1 are fixedly mounted on both sides of the linkage frame 6. The piston ends of the telescopic rods 2 and 1 are fixedly connected to the U-shaped mounting bases 2 on the same side. A U-shaped mounting base 3 is fixedly connected to the top of the U-shaped mounting base 2. A drive gear 2 is rotatably mounted inside the U-shaped mounting base 3 on the same side. A linkage frame 7 is fixedly connected to the side of the electromagnet away from the drive gear 2. The linkage frame 7 is fixedly connected to the U-shaped mounting base 3 on the same side. A base through slot is opened at the top of the device base. The pneumatic cylinder 4 and the telescopic rods 2 both pass through the base through slot.

[0016] Preferably, a drive motor 2 is fixedly connected inside one of the U-shaped mounting bases 3, and a gearbox 3 is fixedly connected to the outside of the U-shaped mounting base 3. The output end of the drive motor 2 passes through the U-shaped mounting base 3 and is fixedly connected to the input end of the gearbox 3. The output end of the gearbox 3 is fixedly connected to the drive gear 2 on the same side. Multiple grooves are provided at both ends of one of the missing gears, and a rod 2 is provided inside the groove. The rod 2 is fixedly connected to the other missing gear.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. When this application is used, during the welding and conveying of the tube blank by the tube blank clamping structure, the outer wall grinding structure, and the welding mechanism, the inner wall grinding head is far from the main air chamber and is located inside the tube blank after being welded by the welding mechanism. During the welding process of the tube blank, the drive motor one is controlled to output rotational force, and the speed changer one changes the direction and speed of the rotational force and then acts on the power output shaft. The power output shaft drives the inner wall grinding head to rotate through the drive gear one, the gear ring, the linkage frame two, and the grinding head mounting seat. The rotating inner wall grinding head grinds the inner wall of the tube blank and polishes the welded part of the inner wall of the tube blank. In the process of processing straight seam welded pipe by welding, the deformable characteristics of the tube blank are utilized to grind the protrusions on the inner wall of the straight seam welded pipe caused by welding. There is no need for subsequent secondary processing of the inner wall of the narrow seam welded pipe, reducing labor costs and controlling the processing cost of seam welded pipe.

[0018] 2. When this application is used, the air extraction equipment with the air extraction pipe fixedly connected in the inner wall grinding structure is operated. Since the air extraction pipe is connected to the inside of the air extraction box through structures such as telescopic air guide pipe, air guide pipe, main air chamber, and air guide branch pipe, the inner wall grinding head is sleeved on the outside of the air extraction box. Multiple air intake holes are provided on both sides of the inner wall grinding head. When the air pressure inside the air extraction box decreases, air is extracted from both sides of the inner wall grinding head through multiple air intake holes. During the process of the debris in the gas passing through the wave-shaped channel formed inside the air extraction box by multiple filter plates, some of the debris is intercepted by the first filter plate, and the other part of the debris is intercepted by the second filter plate and retained inside the air extraction box, thus collecting the debris generated during the grinding of the inner wall of the straight seam welded pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural schematic diagram of the base of the device of the present invention; Figure 3 This is a schematic diagram of the structure of the mounting bracket of the present invention; Figure 4 This is a schematic diagram of the structure of the main air chamber of the present invention; Figure 5 This is a schematic diagram of the structure of the vacuum box of the present invention; Figure 6 This is a schematic diagram of the structure of the grinding head mounting base of the present invention; Figure 7 This is a cross-sectional view of the vacuum chamber of the present invention; Figure 8 This is a schematic diagram of the structure of the linkage frame five of the present invention; Figure 9 This is a schematic diagram of the structure of the support guide frame of the present invention; Figure 10 This is a schematic diagram of the arc-shaped clamping plate of the present invention; Figure 11 This is a schematic diagram of the outer wall grinding structure of the present invention; Figure 12 This is a schematic diagram of the structure of the U-shaped mounting base three of the present invention; Figure 13 This is a schematic diagram of the missing gear structure of the present invention; Figure 14 This is a schematic diagram of the V-shaped frame of the present invention.

[0020] The diagram shows the following components: 1. Device base; 2. Mounting bracket one; 3. Inner wall grinding structure; 31. Pneumatic cylinder two; 32. Sliding arm; 33. Linkage frame one; 34. Air extraction pipe; 35. Telescopic air guide pipe; 36. Air guide pipe; 37. Main air chamber; 38. Rubber parts; 39. Air guide branch pipe; 310. Drive motor one; 311. Gearbox one; 312. Power output shaft; 313. Drive gear one; 314. Rotary joint one; 315. Rotary joint two. 316. Suction box; 317. Suction port; 318. External threaded part one; 319. Internal filling box; 320. Fixed short rod; 321. Filter plate one; 322. Filter plate two; 323. Threaded hole; 324. Inner wall grinding head; 325. Grinding head mounting seat; 326. External threaded part two; 327. Linkage frame two; 328. Gear ring; 4. Tube blank clamping structure; 41. Support guide frame; 42. Forward and reverse motor one; 43. Speed ​​changer two; 44. Transmission 45. Lead screw; 46. Guide slide rod; 47. Lead screw support seat; 48. Mounting bracket two; 49. Pneumatic cylinder three; 40. External threaded part three; 410. Spring-type telescopic rod; 411. Insert rod one; 412. Linkage frame four; 413. Arc-shaped clamping plate; 414. Insert pipe; 415. Internal threaded pipe; 416. Support wheel; 417. Linkage frame five; 418. Dual-axis hydraulic cylinder; 5. Outer wall grinding structure; 51. U-shaped mounting seat one; 52. Pneumatic cylinder four; 53. Linkage 54. Pneumatic Cylinder 5; 55. Telescopic Rod 1; 56. U-shaped Mounting Base 2; 57. U-shaped Mounting Base 3; 58. Drive Motor 2; 59. Gear Variable 3; 511. Drive Gear 2; 512. Missing Gear; 513. Linkage Frame 7; 514. Electromagnet; 515. Groove; 516. Insert Rod 2; 517. Telescopic Rod 2; 6. Welding Mechanism; 7. Pneumatic Cylinder 1; 8. Linkage Frame 3; 9. V-shaped Frame; 10. Guide Roller; 11. Base Through Groove. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Figures 1-14As shown, the present invention provides a guide and edge-gathering device for the inner wall weld of a straight seam welded pipe, including a device base 1, a mounting frame 2, and a welding mechanism 6. An inner wall grinding structure 3 is mounted on the mounting frame 2. The inner wall grinding structure 3 includes a pneumatic cylinder 31, an air guiding component, and an inner wall grinding head 324. A pipe blank clamping structure 4 is provided on one side of the welding mechanism 6. The pipe blank clamping structure 4 includes a transmission component and a dual-axis hydraulic cylinder 418. The transmission component drives a linkage frame 417. Clamping components are provided at both ends of the linkage frame 417 and at both ends of the dual-axis hydraulic cylinder 418. An outer wall grinding structure 5 is provided at the bottom of the pipe blank clamping structure 4. The outer wall grinding structure 5 includes two U-shaped mounting seats 56. A positioning component is provided between the two U-shaped mounting seats 56 and the device base 1. A drive gear 511 and two electromagnets 514 are provided at the top of each of the two U-shaped mounting seats 56. A missing gear 512 meshes with each of the two drive gears 511 on opposite sides.

[0023] Specifically, such as Figure 1 , Figure 2 and Figure 14 Mounting bracket 12 is fixedly installed on the top of device base 1. Mounting bracket 12 is used to install inner wall grinding structure 3. Welding mechanism 6 is installed on one side of device base 1. There is a large gap between welding mechanism 6 and mounting bracket 12. Pneumatic cylinder 17 is fixedly inserted on device base 1. Linkage frame 38 is fixedly connected to the piston end of pneumatic cylinder 17 and set at the bottom of device base 1. Controlling the operation of pneumatic cylinder 17 controls the linkage frame 38 to move up and down. The bottom ends of multiple V-shaped frames 9 inserted on one side of the top of device base 1 are fixedly connected to linkage frame 38. Guide rollers 10 are rotatably installed on both sides inside V-shaped frames 9. Two guide rollers 10 are installed on both sides of V-shaped track. During the up and down movement of linkage frame 38, multiple V-shaped frames 9 move up and down, so that the tube blank axis supported by multiple V-shaped frames 9 and multiple guide rollers 10 moves up and down.

[0024] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The air guiding assembly in the inner wall grinding structure 3 consists of a main air chamber 37, an air guiding branch pipe 39, a drive motor 310, and an air extraction box 316. Rubber parts 38 are fixedly connected to both sides of the main air chamber 37. These rubber parts 38 are deformable and seal the main air chamber 37, enabling it to guide air. An air guiding pipe 36 is fixedly connected to the top of the main air chamber 37. A telescopic air guiding pipe 35 is fixedly connected to the top of the air guiding pipe 36, and an air extraction pipe 34 is fixedly connected to the top of the telescopic air guiding pipe 35. The air extraction pipe 34 is used to fixably connect an air extraction device. The main air chamber 37 has two... The two sliding arms 32, which are fixedly connected to the side, are slidably connected to the mounting frame 2. Under the action of the two sliding arms 32, the main air chamber 37 moves up and down. The linkage frame 33, which is fixedly connected between the two sliding arms 32, is set on the top of the mounting frame 2. The pneumatic cylinder 31 is fixedly installed on the mounting frame 2. The piston end of the pneumatic cylinder 31 is fixedly connected to the linkage frame 33. The pneumatic cylinder 31 is controlled to work. The pneumatic cylinder 31 drives the main air chamber 37 to move up and down through the linkage frame 33 and the two sliding arms 32. The telescopic air pipe 35 extends and retracts to meet the needs of the main air chamber 37 to move up and down within a certain range.

[0025] A vertically fixed air guide pipe 39 is connected to the bottom outer side of the main air chamber 37. The air guide pipe 39 and the main air chamber 37 move synchronously. A rotary joint 314 is fixedly connected to one end of the air guide pipe 39, and a rotary joint 315 is rotatably connected to the other side. The hollow rotary joint 314 and the hollow rotary joint 315 are kept in communication. The outer side of the suction box 316, which is fixedly connected to one side of the rotary joint 315, has multiple suction holes 317. The multiple suction holes 317 are divided into two groups. The inner wall grinding head 324 is set between the two groups of suction holes 317. The external threaded part 318 threaded to one end of the suction box 316 can be rotated to remove debris, which facilitates the discharge of debris from the inside of the suction box 316. 6. An internal filling box 319 is fixedly connected to the inside of the suction box 316 by multiple fixed short rods 320. The internal filling box 319 fills the inside of the suction box 316, reducing the amount of airflow change required for pressure changes inside the suction box 316. A filter plate 322 is fixedly connected to the side of the suction box 316 near the rotary joint 314. Multiple filter plates 321 are provided on the side of the filter plate 322 away from the rotary joint 314. The filter plates 321 are fixedly connected to the suction box 316. The multiple filter plates 321 are fixedly connected to the bottom and top of the inner cavity of the suction box 316, respectively. The multiple filter plates 321 form a wave-shaped channel inside the suction box 316.

[0026] The suction box 316 has two threaded holes 323. The grinding head mounting seat 325, which is sleeved on the outside of the suction box 316, is fixedly connected to the inner wall grinding head 324. The grinding head mounting seat 325 and the inner wall grinding head 324 rotate synchronously with the suction box 316. The grinding head mounting seat 325 has two external threaded parts 326 threadedly connected to it. The external threaded parts 326 correspond one-to-one with the threaded holes 323. The external threaded parts 326 pass through the threaded holes 323. By rotating the external threaded parts 326, the grinding head mounting seat 325 can be separated from the grinding head mounting seat 325, and the fixing between the grinding head mounting seat 325 and the suction box 316 can be removed, and the inner wall grinding head 324 can be removed from the outside of the suction box 316.

[0027] A gearbox 311 and a drive motor 310 are fixedly installed on the outside of the air guide branch pipe 39. The output end of the drive motor 310 is fixedly connected to the input end of the gearbox 311. The power output shaft 312, which is fixedly connected to the output end of the gearbox 311, is fixedly connected to the outside of a drive gear 313. A gear ring 328 meshing with the drive gear 313 is fixedly connected to a linkage frame 327. The linkage frame 327 is fixedly connected to a grinding head mounting seat 325. Therefore, after the drive motor 310 is controlled to work, the drive motor 310 drives the linkage frame 327 to rotate through the gearbox 311, the power output shaft 312, the drive gear 313, and the gear ring 328. The grinding head mounting seat 325, which is fixedly connected to the linkage frame 327, rotates, and the inner wall grinding head 324 rotates. The power output shaft 312 passes through the rotary joint 314 and is rotatably connected to the rotary joint 314. The power output shaft 312 rotates stably.

[0028] Specifically, such as Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 10The clamping assembly includes two mounting brackets 47. A pneumatic cylinder 48 and two spring-loaded telescopic rods 410 are fixedly mounted on the mounting brackets 47. An externally threaded component 49 is fixedly connected to the piston end of the pneumatic cylinder 48. An internally threaded tube 415 is threaded onto the outer side of the externally threaded component 49. An insertion rod 411 is fixedly connected to the piston end of the spring-loaded telescopic rod 410. An insertion tube 414 is sleeved on the outer side of the insertion rod 411. An arc-shaped clamping plate 413 is fixedly connected between the insertion tube 414 and the internally threaded tube 415. The insertion rod 411 is positioned at the insertion... When the tube is inserted into the 414, the two spring-loaded telescopic rods 410 cooperate with the two insertion rods 411 to prevent the arc-shaped clamping plate 413 from rotating outside the external threaded part 49. The arc-shaped clamping plate 413 is controlled by the pneumatic cylinder 48 to maintain its left and right position. A linkage frame 412 is fixedly connected between the two insertion rods 411. By operating the linkage frame 412, the insertion rods 411 can be moved away from the inside of the tube 414, and the arc-shaped clamping plate 413 can be rotated to move the internal threaded tube 415 away from the outside of the external threaded part 49, thus disassembling the arc-shaped clamping plate 413.

[0029] Two mounting brackets 47 in the two clamping assemblies on the left are fixedly installed on the two piston ends of the dual-axis hydraulic cylinder 418. A support guide frame 41 is fixedly connected between the outside of the dual-axis hydraulic cylinder 418 and the device base 1. The support guide frame 41 passes through the mounting brackets 47. The two mounting brackets 47 are supported by the support guide frame 41 and move back and forth, controlling the operation of the dual-axis hydraulic cylinder 418 and controlling the back and forth movement of the two mounting brackets 47. The two clamping assemblies on the left move back and forth.

[0030] The transmission assembly consists of a forward / reverse motor 42 and a speed changer 43, both of which are fixedly mounted on the top of the device base 1. The output end of the forward / reverse motor 42 is fixedly connected to the input end of the speed changer 43. A guide slide rod 45 is provided on one side of the transmission screw 44, which is fixedly connected to the output end of the speed changer 43. Screw support seats 46 are rotatably mounted on both ends of the outer sides of the transmission screw 44 and the guide slide rod 45. The screw support seats 46 are fixedly mounted on the top of the device base 1. Both the transmission screw 44 and the guide slide rod 45 can rotate. A linkage frame 417 is threaded onto the transmission screw. On the outside of 44, the guide slide rod 45 passes through the linkage frame 417. The linkage frame 417 is supported by the transmission screw 44 and the guide slide rod 45 and can move left and right. Both ends of the linkage frame 417 are fixedly connected to the support wheels 416. The two support wheels 416 are respectively fixedly connected to the two mounting brackets 47 in the right clamping assembly. Therefore, the forward and reverse motor 42 is controlled to work. The rotational force output by the forward and reverse motor 42 is changed by the speed changer 43 and then applied to the transmission screw 44. The rotation of the transmission screw 44 drives the outer linkage frame 417 to move left and right, and the two clamping assemblies on the right move left and right.

[0031] In summary, by controlling the operation of the transmission components in the billet clamping structure 4, the left and right movements of the two clamping components on the right side can be controlled.

[0032] Specifically, such as Figure 1 , Figure 2 , Figure 11 , Figure 12 and Figure 13 In the control assembly, the U-shaped mounting base 51 is fixedly installed at the bottom of the device base 1. The top of the device base 1 is provided with a base through groove 11. The U-shaped mounting base 51 is set at the bottom of the base through groove 11. The pneumatic cylinder 52 and two telescopic rods 517 are fixedly installed on the U-shaped mounting base 51. The pneumatic cylinder 52 and the telescopic rods 517 both pass through the base through groove 11, so that the linkage frame 53 fixedly connected to the piston end of the pneumatic cylinder 52 has sufficient space to move up and down. A pneumatic cylinder 54 is fixedly mounted on the linkage frame 6 53. The two piston ends of the pneumatic cylinder 54 are fixedly connected to two U-shaped mounting seats 2 56 respectively. Two telescopic rods 1 55 are fixedly mounted on both sides of the linkage frame 6 53. The piston ends of the telescopic rods 2 517 and 1 55 are fixedly connected to the U-shaped mounting seats 2 56 on the same side. By controlling the operation of the pneumatic cylinder 4 52, the linkage frame 6 53 and the two U-shaped mounting seats 2 56 can be controlled to move up and down.

[0033] A U-shaped mounting base 2 56 is fixedly connected to a U-shaped mounting base 3 57 at its top. A drive gear 2 511 is rotatably mounted inside the U-shaped mounting base 3 57 on the same side. The U-shaped mounting base 3 57 and the drive gear 2 511 move up and down synchronously with the U-shaped mounting base 2 56. A linkage frame 7 513 is fixedly connected to the side of the electromagnet 514 away from the drive gear 2 511. The linkage frame 7 513 is fixedly connected to the U-shaped mounting base 3 57 on the same side. The linkage frame 7 513 and the electromagnet 514 move synchronously with the U-shaped mounting base 3 57.

[0034] One of the U-shaped mounting bases 3 57 has a drive motor 2 58 fixedly connected inside, and a speed changer 3 59 fixedly connected to the outside of the U-shaped mounting base 3 57. The output end of the drive motor 2 58 passes through the U-shaped mounting base 3 57 and is fixedly connected to the input end of the speed changer 3 59. The drive motor 2 58 delivers rotational force to the speed changer 3 59. The output end of the speed changer 3 59 is fixedly connected to the drive gear 2 511 on the same side. The rotational force of the speed changer 3 59 after changing direction and speed is applied to the drive gear 2 511, causing the drive gear 2 511 to rotate.

[0035] One of the missing gears 512 has multiple grooves 515 at both ends. A second insert rod 516 is installed inside the groove 515. The second insert rod 516 is fixedly connected to the other missing gear 512. Under the action of the multiple second insert rods 516, the two missing gears 512 are engaged together. Under the support of the second drive gears 511 on both sides, the two missing gears 512 move synchronously.

[0036] In summary, this application provides a guiding edge-gathering device composed of a device base 1, a mounting bracket 2, an inner wall grinding structure 3, a billet clamping structure 4, an outer wall grinding structure 5, a welding mechanism 6, a pneumatic cylinder 7, a linkage frame 3 8, a V-shaped frame 9, and guide rollers 10. Connecting the guiding edge-gathering device to a human-machine interface to achieve semi-automatic operation is an existing technology application, which will not be elaborated here.

[0037] The working principle of the guide edge finishing device is as follows: The V-shaped frame 9 and the two guide rollers 10 rotatably installed inside the V-shaped frame 9 form a V-shaped guide frame to support the tube blank. The tube blank moves from left to right under the support of multiple V-shaped guide frames. When the tube blank approaches the main air chamber 37 in the inner wall grinding structure 3, the tube blank crack is separated, so that the tube blank sleeve is outside the flat main air chamber 37, the air guide branch pipe 39 and the inner wall grinding head 324 are inside the moving tube blank. At this time, the deformable rubber part 38 smooths the deformation curve of the tube blank, and the rubber part 38 cleans the side wall at the crack of the tube blank to ensure that the tube blank to be welded is clean.

[0038] When one end of the tube blank enters the welding mechanism 6, the two clamping components on the left side of the tube blank clamping structure 4 are controlled to work. The two arc-shaped clamping plates 413 in the two clamping components on the left side move to clamp the outside of the tube blank. The tube blank is pushed and closed by the two arc-shaped clamping plates 413, so that the part of the tube blank that enters the welding mechanism 6 is in a closed state. Moreover, the main air chamber 37 is far away from the left clamping components. The tube blank is affected by the main air chamber 37 locally for a short time during the movement. The flat structure design of the main air chamber 37 cannot cause permanent deformation of the tube blank.

[0039] After the tube blank enters the welding mechanism 6, the welding mechanism 6 welds the tube blank. When the right end of the tube blank leaves the welding mechanism 6 a certain distance, the welding mechanism 6 pauses operation. The operator stops pushing the tube blank and controls the pneumatic cylinder 48 in the two clamping components on the left to increase the force applied to the tube blank, clamping and fixing it. At this time, the tube blank cannot rotate. The operator then controls the pneumatic cylinder 52 in the outer wall grinding structure 5 to move the two U-shaped mounting seats 56, the two drive gears 511, and the two missing gears 512 upwards. The operator also controls the pneumatic cylinder 54 to move the two U-shaped mounting seats 56, the two drive gears 511, and the two missing gears 512 back and forth, thus controlling the outer wall... After the grinding structure 5 is working, the two missing gears 512 move to the outer side of the right end of the tube blank. Under the action of multiple insert rods 516, the two missing gears 512 form a grinding gear. Both sides of the grinding gear are meshed with drive gears 511. The grinding gear is limited to rotate on its own, and the control electromagnet 514 stops working. The electromagnet 514 no longer fixes the drive gear 511 by magnetic attraction, and controls the drive motor 58 to work. The drive motor 58 sends rotational force to the speed changer 59. The speed changer 59 changes the direction and speed of the rotational force and then acts on the drive gear 511. The drive gear 511 rotates, the grinding gear rotates, and the rough surface inside the grinding gear rotates to grind the outer side of the right end of the tube blank.

[0040] After the outer wall grinding structure 5 has been grinding the right end of the tube blank for a period of time, the outer wall grinding structure 5 is paused, and the drive motor 2 58 stops working when it controls the drive gear 2 511 to rotate a full revolution. After the drive motor 2 58 stops working, the electromagnet 514 is activated. The electromagnet 514 is attracted and fixed to the iron drive gear 2 511 by magnetic force. The outer wall grinding structure 5 is then activated to restore its original shape, making room for the two clamping components on the right to clamp the right end of the tube blank. Then, the transmission component in the tube blank clamping structure 4 is activated to control the two clamping components on the right to move left and right, so that the two clamping components on the right move to the outside of the right end of the tube blank. Then, the two clamping components on the left and the two clamping components on the right are activated. The two clamping components on the right move the two arc-shaped clamping plates. 413 clamps the tube blank to the outside of the right end, completing the tube blank clamping work; then, the pneumatic cylinder 3 48 in the two clamping components on the left works, reducing the force applied to the tube blank by the two arc-shaped clamping plates 413 on the left. The two arc-shaped clamping plates 413 on the left function to close and tuck the tube blank together, and do not affect the left and right movement of the tube blank; then the welding mechanism 6 is controlled to work, and the welding mechanism 6 welds the tube blank. The two clamping components on the right are controlled to move to the right, and the right end of the tube blank is pulled to the right. When the outer wall grinding structure 5 moves and unfolds without being interfered with by the tube blank clamping structure 4, the outer wall grinding structure 5 works, so that the two missing gears 512 move to the outside of the tube blank. After the outer wall grinding structure 5 works, the two missing gears 512 rotate to grind the outside of the tube blank, making the welded part of the tube blank smooth and ensuring the quality of tube blank processing.

[0041] When the two clamping components on the right move to the limit that the transmission screw 44 can support, the two clamping components on the right release the tube blank, while the two clamping components on the left clamp the tube blank, allowing the outer wall grinding structure 5 to smoothly grind the tube blank. Then, the forward and reverse motor 42 reverses at high power, and the two clamping components on the right quickly move to the right side of the outer wall grinding structure 5. At this time, the two clamping components on the right clamp the tube blank, while the two clamping components on the left release the tube blank. The forward and reverse motor 42 rotates forward at low power, allowing the tube blank to continue to move slowly to the right. The above process is repeated. The tube blank clamping structure 4 and the outer wall grinding structure 5 work together to complete the welding, outer wall grinding and conveying of the tube blank, ensuring fast and efficient tube blank processing.

[0042] During the welding and conveying process of the tube blank, the tube blank clamping structure 4, the outer wall grinding structure 5, and the welding mechanism 6 work together. The inner wall grinding head 324 is far from the main air chamber 37 and is located inside the tube blank after being welded by the welding mechanism 6. During the welding process of the tube blank by the welding mechanism 6, the drive motor 310 is controlled to output rotational force. The speed changer 311 changes the direction and speed of the rotational force and then acts on the power output shaft 312. The power output shaft 312 drives the inner wall grinding head 324 to rotate through the drive gear 313, the gear ring 328, the linkage frame 327, and the grinding head mounting seat 325. The rotating inner wall grinding head 324 grinds the inner wall of the tube blank and polishes the welded part of the inner wall of the tube blank. In the process of processing straight seam welded pipe by welding, the deformable characteristics of the tube blank are utilized to grind the protrusions on the inner wall of the straight seam welded pipe caused by welding. There is no need for secondary processing of the inner wall of the narrow seam welded pipe, which reduces labor costs and controls the processing cost of straight seam welded pipe.

[0043] The air extraction device, which is fixedly connected to the air extraction pipe 34 in the inner wall grinding structure 3, operates. Since the air extraction pipe 34 is connected to the inside of the air extraction box 316 through structures such as the telescopic air guide pipe 35, air guide pipe 36, main air chamber 37, and air guide branch pipe 39, the inner wall grinding head 324 is sleeved on the outside of the air extraction box 316. Multiple air intake holes 317 are provided on both sides of the inner wall grinding head 324. The internal filling box 319 fills the inside of the air extraction box 316, reducing the amount of airflow required for pressure changes inside the air extraction box 316. At this time, the air pressure inside the air extraction box 316 decreases and passes through the multiple air intake holes 317. 7. Air is drawn from both sides of the inner wall grinding head 324. During the process of the debris in the gas passing through the wave-shaped channel formed inside the air extraction box 316 by multiple filter plates 321, some debris is intercepted by the impact of the filter plates 321, and the other part of the debris is intercepted by the filter plates 322 inside the air extraction box 316, thus completing the debris interception work. The debris generated during the grinding of the inner wall of the straight seam welded pipe is collected in a concentrated manner, which further reduces the cost required for cleaning the inner wall of the straight seam welded pipe, ensures the efficiency of the production of the inner wall of the straight seam welded pipe, and collects debris in real time to avoid secondary scratches caused by grinding debris remaining on the inner wall of the pipe blank.

[0044] Additionally, by controlling the operation of the outer wall grinding structure 5, and after the two missing gears 512 move away from each other, the electromagnet 514 is stopped, allowing the missing gears 512 in the outer wall grinding structure 5 to be disassembled and replaced, so that the two missing gears 512 can form grinding gears with different inner diameters; by pulling the linkage frame 412, the spring-type telescopic rod 410 is retracted, and after the two insertion rods 411 leave the inside of the two insertion tubes 414, the arc-shaped clamping plate 413 is rotated to disengage the internal threaded tube 415 from the external threaded part 39, allowing the arc-shaped clamping plate 413 to be disassembled and replaced, so that the two arc-shaped clamping plates 413 can form clamping frames with different inner diameters; by rotating the external threaded part 326 to disengage from the threaded hole 323, the inner wall grinding head 324 can be disassembled and replaced; at the same time, the pneumatic cylinder 7 is controlled to control the up and down movement of multiple V-shaped frames 9, so that the axis of the tube blank supported by the multiple V-shaped frames 9 is on the same horizontal line as the axis of the grinding gear and the clamping frame, so that the guide edge finishing device can process tube blanks with different inner diameters.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A guide and edge-trimming device for the inner wall weld of a straight seam welded pipe, comprising a device base (1), a mounting frame (2), and a welding mechanism (6), characterized in that: An inner wall grinding structure (3) is installed on the mounting bracket (2). The inner wall grinding structure (3) includes a pneumatic cylinder (31), an air guiding component, and an inner wall grinding head (324). A tube blank clamping structure (4) is provided on one side of the welding mechanism (6). The tube blank clamping structure (4) includes a transmission component and a dual-axis hydraulic cylinder (418). The transmission component drives a linkage frame (417). Both ends of the linkage frame (417) and both ends of the dual-axis hydraulic cylinder (418) are equipped with... The tube blank clamping structure (4) has an outer wall grinding structure (5) at its bottom. The outer wall grinding structure (5) includes two U-shaped mounting seats (56). A control assembly is provided between the two U-shaped mounting seats (56) and the device base (1). The top of each of the two U-shaped mounting seats (56) is provided with a drive gear (511) and two electromagnets (514). Each of the two drive gears (511) has a missing gear (512) meshing on opposite sides.

2. The straight seam welded pipe inner wall weld seam guiding and edge-terminating device according to claim 1, characterized in that: The mounting bracket (2) is fixedly installed on the top of the device base (1). The welding mechanism (6) is installed on one side of the device base (1). A pneumatic cylinder (7) is fixedly installed on the device base (1). A linkage frame (8) is fixedly connected to the piston end of the pneumatic cylinder (7). The linkage frame (8) is located at the bottom of the device base (1). Multiple V-shaped frames (9) are inserted on one side of the top of the device base (1). The bottom end of the V-shaped frame (9) is fixedly connected to the linkage frame (8). Guide rollers (10) are rotatably installed on both sides inside the V-shaped frame (9).

3. The straight seam welded pipe inner wall weld seam guiding and edge-gathering device according to claim 1, characterized in that: The air guiding assembly includes a main air chamber (37), an air guiding branch pipe (39), a drive motor (310), and an air extraction box (316). Rubber parts (38) are fixedly connected to both sides of the main air chamber (37). An air guiding pipe (36) is fixedly connected to the top of the main air chamber (37). A telescopic air guiding pipe (35) is fixedly connected to the top of the air guiding pipe (36). An air extraction pipe (34) is fixedly connected to the top of the telescopic air guiding pipe (35). Sliding arms (32) are fixedly connected to both sides of the main air chamber (37). The sliding arms (32) are slidably connected to the mounting frame (2). A linkage frame (33) is fixedly connected between the two sliding arms (32). A pneumatic cylinder (31) is fixedly mounted on the mounting frame (2). The piston end of the pneumatic cylinder (31) is fixedly connected to the linkage frame (33).

4. The straight seam welded pipe inner wall weld seam guiding and edge-terminating device according to claim 3, characterized in that: The air guide branch pipe (39) is fixedly connected to the bottom of the outer side of the main air chamber (37). One end of the air guide branch pipe (39) is fixedly connected to a rotary joint one (314). One end of the rotary joint one (314) is rotatably connected to a rotary joint two (315). One side of the rotary joint two (315) is fixedly connected to an air extraction box (316). Multiple air suction holes (317) are opened on the outer side of the air extraction box (316). One end of the air extraction box (316) is threaded with an external threaded part one (318). An internal filling box (319) is provided inside the air extraction box (316). Multiple fixed short rods (320) are fixedly connected between the internal filling box (319) and the inner wall of the air extraction box (316).

5. The straight seam welded pipe inner wall weld seam guiding and edge-gathering device according to claim 4, characterized in that: The vacuum box (316) has two threaded holes (323) formed on it. A grinding head mounting seat (325) is sleeved on the outside of the vacuum box (316). The grinding head mounting seat (325) is fixedly connected to the grinding head (324) on the inner wall. Two external threaded parts (326) are threadedly connected to the grinding head mounting seat (325). The external threaded parts (326) correspond one-to-one with the threaded holes (323). A filter plate (322) is fixed inside the vacuum box (316) on the side close to the rotary joint (314). Multiple filter plates (321) are provided on the side of the filter plate (322) away from the rotary joint (314). The filter plates (321) are fixedly connected to the inner wall of the vacuum box (316).

6. The straight seam welded pipe inner wall weld seam guiding and edge-gathering device according to claim 5, characterized in that: The drive motor (310) is fixedly installed on the outside of the air guide pipe (39). The gearbox (311) is fixedly installed on the outside of the air guide pipe (39). The output end of the drive motor (310) is fixedly connected to the input end of the gearbox (311). The output end of the gearbox (311) is fixedly connected to the power output shaft (312). The drive gear (313) is fixedly connected on the outside of the power output shaft (312). The gear ring (328) meshes on the outside of the drive gear (313). The gear ring (328) is fixedly connected to the linkage frame (327). The linkage frame (327) is fixedly connected to the grinding head mounting seat (325).

7. The straight seam welded pipe inner wall weld seam guiding and edge-trimming device according to claim 1, characterized in that: The clamping assembly includes a second mounting bracket (47), on which a third pneumatic cylinder (48) and two spring-loaded telescopic rods (410) are fixedly mounted. The piston end of the third pneumatic cylinder (48) is fixedly connected to a third externally threaded component (49), and an internally threaded tube (415) is sleeved on the outside of the third externally threaded component (49). The piston end of the spring-loaded telescopic rods (410) is fixedly connected to a first insertion rod (411), and a insertion tube (414) is sleeved on the outside of the first insertion rod (411). An arc-shaped clamping plate (413) is fixedly connected between the tube (414) and the internally threaded tube (415). A linkage frame (412) is fixedly connected between the two insertion rods (411). Two mounting frames (47) of the two clamping components on the left are fixedly installed on the two piston ends of the dual-axis hydraulic cylinder (418). A support guide frame (41) is fixedly connected between the outside of the dual-axis hydraulic cylinder (418) and the device base (1). The support guide frame (41) passes through the mounting frame (47).

8. The straight seam welded pipe inner wall weld seam guiding and edge-gathering device according to claim 7, characterized in that: The transmission assembly includes a forward and reverse motor (42) and a speed changer (43) fixedly connected to the top of the device base (1). The output end of the forward and reverse motor (42) is fixedly connected to the input end of the speed changer (43). The output end of the speed changer (43) is fixedly connected to a transmission screw (44). A guide slide (45) is provided on one side of the transmission screw (44). Screw support seats (46) are rotatably installed at both ends of the outer side of the transmission screw (44) and the guide slide (45). The screw support seats (46) are fixedly installed on the top of the device base (1). The linkage frame (417) is threaded on the outer side of the transmission screw (44). The guide slide (45) passes through the linkage frame (417). Support wheels (416) are fixedly connected to both ends of the linkage frame (417). The two support wheels (416) are fixedly connected to two mounting frames (47) in the two clamping assemblies on the right side.

9. The straight seam welded pipe inner wall weld seam guiding and edge-terminating device according to claim 1, characterized in that: The control assembly includes a U-shaped mounting base (51), which is fixedly mounted on the bottom of the device base (1). A pneumatic cylinder (52) and two telescopic rods (517) are fixedly mounted on the U-shaped mounting base (51). A linkage frame (53) is fixedly connected to the piston end of the pneumatic cylinder (52). A pneumatic cylinder (54) is fixedly mounted on the linkage frame (53). The two piston ends of the pneumatic cylinder (54) are fixedly connected to the U-shaped mounting bases (56) respectively. Two telescopic rods (55) are fixedly mounted on both sides of the linkage frame (53). The piston ends of the telescopic rods (517) and the telescopic rods (55) are fixedly mounted on the U-shaped mounting bases (56) respectively. The piston end of rod one (55) is fixedly connected to the U-shaped mounting seat two (56) on the same side. The top of the U-shaped mounting seat two (56) is fixedly connected to the U-shaped mounting seat three (57). The drive gear two (511) is rotatably installed inside the U-shaped mounting seat three (57) on the same side. The electromagnet (514) is fixedly connected to the linkage frame seven (513) on the side away from the drive gear two (511). The linkage frame seven (513) is fixedly connected to the U-shaped mounting seat three (57) on the same side. The device base (1) has a base through groove (11) on the top. The pneumatic cylinder four (52) and the telescopic rod two (517) both pass through the base through groove (11).

10. A guide and edge-tightening device for the inner wall weld of a straight seam welded pipe according to claim 9, characterized in that: One of the U-shaped mounting bases (57) has a drive motor (58) fixedly connected inside, and a gearbox (59) is fixedly connected to the outside of the U-shaped mounting base (57). The output end of the drive motor (58) passes through the U-shaped mounting base (57) and is fixedly connected to the input end of the gearbox (59). The output end of the gearbox (59) is fixedly connected to the drive gear (511) on the same side. One of the missing gears (512) has multiple grooves (515) at both ends. A rod (516) is provided inside the groove (515). The rod (516) is fixedly connected to the other missing gear (512).

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