A spigot and socket expansion device

Abstract

This invention relates to the field of pipe fitting connection processing technology, and particularly to a socket-type flaring device, comprising a placement plate, a clamping mechanism, a support mechanism, and a flaring mechanism. In this invention, the three clamping plates cooperate to clamp the placed steel pipe, while the support plate and pressure plate simultaneously hug and support the steel pipe, facilitating the rotational flaring operation and avoiding problems such as large flaring errors due to friction between the support plate / pressure plate and the steel pipe, leading to substandard flaring. Furthermore, the flaring component uses a circular plate and an L-shaped plate to move the corresponding sliding plate away from the truncated cone. As the truncated cone continues to move to the left, all the flaring plates cooperate to flare the steel pipe. This rotational and pressing method facilitates the processing of the flared shape into a circular shape, facilitating subsequent steel pipe connection and preventing steel pipe breakage.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting connection processing technology, and in particular to a socket-type flaring device. Background Technology

[0002] Currently, when connecting steel pipes, if the pipe length is insufficient, a turning connection is needed, or the pipe needs to be connected to other workpieces, the pipe end usually needs to be flared. The pipes to be connected are then placed into the flared section, and the connection is manually welded. This connection method is convenient and does not require other connectors, making it widely used. However, the following problems exist in the flaring process: 1. First, the steel pipe needs to be clamped before flaring. During clamping, the flared section may not be perfectly round due to the choice of clamping method, leading to significant deviations when connecting other pipes later, affecting the connection quality.

[0003] 2. Currently, when flaring steel pipes, the process often involves manual adjustment using tools to adjust the required flaring size. This method results in unstable product quality, low overall work efficiency, and a tendency for the pipe ends to crack. Furthermore, this method offers limited control over the flaring dimensions, leading to significant dimensional errors. Summary of the Invention

[0004] To solve the above problems, the present invention adopts the following technical solution: a socket-type flaring device, including a placement plate, a clamping mechanism, a supporting mechanism and a flaring mechanism. The placement plate is placed horizontally and is L-shaped. The clamping mechanism is provided on the right end face of the vertical part of the L-shaped plate. The supporting mechanism and the flaring mechanism are arranged sequentially from left to right on the upper end face of the horizontal part of the placement plate, and both are located on the right side of the clamping mechanism.

[0005] The clamping mechanism includes a clamping shaft. The clamping shaft is rotatably mounted on the right end face of the L-shaped plate. A rotating circular plate is fixedly mounted on the right end face of the clamping shaft. A gear shaft is rotatably mounted on the right end face of the rotating circular plate. A drive gear is fixedly mounted on the gear shaft. Three rack grooves symmetrical about the center of the gear shaft axis are opened on the right end face of the rotating circular plate. A rack plate is slidably mounted in the rack groove. The three rack plates have different thicknesses. A clamping rack that meshes with the drive gear is fixedly mounted on the right end face of the gear plate. A pressing circular plate is rotatably mounted on the right end face of the middle position of the clamping gear through a connecting shaft. A clamping plate with an arc-shaped structure is fixedly mounted on the right end face of the pressing circular plate. An elastic rope is fixedly mounted between each pair of the three clamping plates. A rubber pad is fixedly mounted on the outer arc surface of the clamping plate.

[0006] As a preferred embodiment of the present invention, a bracket plate is fixedly provided on the right end face of the clamping rack away from the driving gear, and an auxiliary cylinder is fixedly provided on the end face of the bracket plate facing the driving gear. An auxiliary plate is hinged to the telescopic end of the auxiliary cylinder. The auxiliary plate has an arc-shaped structure, and the inner arc surface of the auxiliary plate is in close contact with the placed steel pipe.

[0007] As a preferred embodiment of the present invention, the right end face of the vertical portion of the placement plate is provided with an annular support groove, the inner wall of the support groove is provided with an annular limiting groove, and the radius of the limiting groove is larger than the radius of the support groove. The left end face of the rotating circular plate is fixedly provided with three L-shaped arc plates that are symmetrical about the axis of the rotating circular plate. The horizontal portion of the arc plate slides in the support groove, and the vertical portion of the arc plate slides in the limiting groove.

[0008] As a preferred embodiment of the present invention, the support mechanism includes a moving groove. The upper end face of the horizontal portion of the placement plate is provided with a moving groove from left to right. An electric slider is slidably arranged in the moving groove. A transition plate is fixedly arranged on the upper end face of the electric slider. Two support plates with front and rear symmetry are hinged on the upper end face of the transition plate. The support plates have an arc-shaped structure. Spring plates are fixedly arranged on both the front and rear end faces of the electric slider in the moving groove. Two left-right symmetrical compression springs are fixedly arranged between the spring plates and the corresponding support plates.

[0009] As a preferred embodiment of the present invention, the rear end face of the electric slider in the moving groove is fixedly provided with two symmetrical connecting columns. The rear end faces of the two connecting columns are jointly fixedly provided with a vertical plate. The front end face of the vertical plate is fixedly provided with an operating plate. The upper end face of the operating plate is provided with a pressing groove. A pressing column is slidably provided in the pressing groove. An arc-shaped pressing plate is fixedly provided on the lower end face of the pressing column. A lifting plate is fixedly provided on the upper end face of the pressing column. A pressing cylinder is fixedly provided on the upper end face of the operating plate, and the telescopic end of the pressing cylinder is fixedly connected to the lifting plate.

[0010] As a preferred embodiment of the present invention, the inner arc-shaped surface of the support plate is fixedly provided with multiple sets of plate groups evenly distributed circumferentially along its arc-shaped surface. Each plate group includes two left-right symmetrical mounting plates. A rotating shaft is rotatably provided between the two corresponding mounting plates. A rotating roller that is tightly fitted to the steel pipe is fixedly sleeved on the rotating shaft. The inner arc-shaped surface of the pressing plate is fixedly provided with two front-back symmetrical plate groups that are the same as those on the support plate. Each plate group is provided with two left-right symmetrical mounting plates, and the corresponding mounting plates are provided with the same rotating shaft and rotating roller as those on the support plate.

[0011] As a preferred embodiment of the present invention, the flaring mechanism includes transverse sliding grooves. Two symmetrical transverse sliding grooves, arranged from left to right, are formed on the upper surface of the horizontal portion of the placement plate. An electric slider is slidably disposed within each transverse sliding groove. A transverse plate is fixedly disposed on the upper surface of each of the two electric sliders. Four flaring grooves, symmetrical about the axis of the rotating circular plate, are formed on the left end surface of the transverse plate. A sliding plate is slidably disposed within each flaring groove. An arc-shaped flaring plate is fixedly disposed on the left end surface of the sliding plate. An L-shaped plate is fixedly disposed on the right end portion of the sliding plate. Placement circular plates are fixedly disposed on both the front and rear ends of the L-shaped plate via connecting blocks. A flaring shaft is rotatably disposed between two corresponding placement circular plates. A flaring shaft is fixed on... The device is fitted with a flared part, which is a single-leaf hyperboloid curved surface structure. A fixed post is fixedly installed on the right end face of the transverse plate. A frustum that mates with the flared part is slidably installed on the fixed post. Two symmetrical fixed plates are fixedly installed on the right end face of the transverse plate. A mating plate that is fixedly connected to the fixed post is fixedly installed on the right end face of the two fixed plates. A mating groove is opened on the opposite side of the two fixed plates. A mating block is slidably installed in the mating groove. A fixing strip is fixedly installed on the end face of the mating block away from the corresponding mating groove. The fixing strip is fixedly connected to the frustum. A flared cylinder that corresponds to the fixing strip is fixedly installed on the left end face of the mating plate. The telescopic end of the flared cylinder is fixedly connected to the corresponding fixing strip.

[0012] As a preferred embodiment of the present invention, the right end face of the transverse plate has two symmetrical scale grooves arranged from top to bottom. A vertical moving block is slidably arranged in the scale groove. A transverse plate is fixedly arranged on the right end face of the two vertical moving blocks. A T-shaped limiting groove is provided on the right end face of the transverse plate. A limiting circular plate is slidably arranged in the longitudinal part of the limiting groove. A placement groove is provided on the right end face of the transverse plate. A limiting post is fixedly arranged on the right end face of the limiting circular plate and placed in the placement groove. A threaded groove is provided on the right end of the limiting post. A limiting ring that is threadedly engaged with the limiting post is provided on the right end of the limiting post. A scale assembly that cooperates with the transverse plate is fixedly arranged on the right end face of the transverse plate.

[0013] The beneficial effects of the present invention are as follows: 1. The three clamping plates provided in the present invention cooperate with each other to clamp the placed steel pipe, and the supporting plate and the clamping plate provided at the same time hug and support the steel pipe, which reduces the friction between the steel pipe and the supporting plate and the clamping plate, facilitates the rotation and flaring operation of the steel pipe, and avoids the problem that the flaring operation error is large due to the friction between the supporting plate and the clamping plate and the steel pipe, resulting in the final flaring not meeting the standard.

[0014] 2. The flaring component in this invention uses a circular plate and an L-shaped plate to move the corresponding sliding plate away from the truncated cone. As the truncated cone continues to move to the left, an external motor drives the steel pipe to rotate via a clamping shaft. At this time, all the flaring plates cooperate to flare the steel pipe. This rotational and pressing method facilitates the processing of the flared shape into a circle, which is convenient for subsequent steel pipe connection and avoids the problem of steel pipe breakage. It also reduces manual intervention and improves work efficiency.

[0015] 3. In this invention, the horizontal plate is first moved so that it is at a designated position on the scale assembly. At the same time, the limiting ring is installed through the threaded engagement between the limiting ring and the limiting post. Then, during the flaring operation, the uppermost horizontal block moves up to contact the horizontal plate and is stopped by the horizontal plate. The size of the flared steel pipe at this time is the required size, thus avoiding large deviations in the size of the flared steel pipe after flaring. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a first schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 This is a second schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 3 This is a partial cross-sectional view of a local structure in this invention.

[0020] Figure 4 In this invention Figure 3 Enlarged view of point A in the middle.

[0021] Figure 5 This is a three-dimensional schematic diagram of the relationship between the transverse plate, the fixed plate, and the frustum in this invention.

[0022] Figure 6 In this invention Figure 5 Enlarged view of point B in the middle.

[0023] In the diagram: 1. Placement plate; 2. Clamping mechanism; 20. Clamping shaft; 200. Rotating circular plate; 201. Drive gear; 202. Rack groove; 203. Clamping rack; 204. Clamping circular plate; 205. Clamping plate; 206. Elastic rope; 207. Rubber pad; 21. Support plate; 210. Auxiliary cylinder; 211. Auxiliary plate; 22. Support groove; 220. Restriction groove; 221. Arc plate; 3. Support mechanism; 30. Moving groove; 300. Transition plate; 301. Support plate; 302. Spring plate; 303. Compression spring; 31. Vertical plate; 310. Operation plate; 311. Compression column; 312. Compression plate; 313. 314. Lifting plate; 32. Pressing cylinder; 33. Mounting plate; 34. Rotating shaft; 35. Rotating roller; 46. Flaring mechanism; 47. Transverse groove; 48. Transverse plate; 49. Flaring groove; 40. Sliding plate; 41. Flaring plate; 42. L-shaped plate; 43. Placement round plate; 44. Flaring component; 45. Fixing column; 410. Frustum; 411. Fixing plate; 412. Mating plate; 413. Mating groove; 414. Fixing strip; 415. Flaring cylinder; 416. Scale groove; 420. Transverse plate; 421. Limiting groove; 422. Limiting round plate; 423. Limiting column; 424. Limiting ring; 425. Scale assembly. Detailed Implementation

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0025] See Figure 1 and Figure 2 A socket-type flaring device includes a placement plate 1, a clamping mechanism 2, a supporting mechanism 3, and a flaring mechanism 4. The placement plate 1 is placed horizontally and is L-shaped. The clamping mechanism 2 is provided on the right end face of the vertical part of the L-shaped plate 404. The supporting mechanism 3 and the flaring mechanism 4 are provided from left to right on the upper end face of the horizontal part of the placement plate 1, and both are located on the right side of the clamping mechanism 2.

[0026] See Figure 3 and Figure 4The clamping mechanism 2 includes a clamping shaft 20. The clamping shaft 20 is rotatably mounted on the right end face of the placement plate 1. A rotating circular plate 200 is fixedly mounted on the right end face of the clamping shaft 20. A gear shaft is rotatably mounted on the right end face of the rotating circular plate 200. A drive gear 201 is fixedly sleeved on the gear shaft. Three rack grooves 202 symmetrical about the center of the gear shaft axis are opened on the right end face of the rotating circular plate 200. A rack plate is slidably mounted in the rack grooves 202, and the thickness of the three rack plates is equal to the thickness of the gear shaft. At different angles, a clamping rack 203 that meshes with the drive gear 201 is fixedly installed on the right end face of the gear plate. A pressing circular plate 204 is rotatably installed on the right end face of the middle position of the clamping rack 203 via a connecting shaft. A clamping plate 205 is fixedly installed on the right end face of the pressing circular plate 204. The clamping plate 205 has an arc-shaped structure. An elastic rope 206 is fixedly installed between each pair of the three clamping plates 205. A rubber pad 207 is fixedly installed on the outer arc surface of the clamping plate 205.

[0027] During operation, the end of the steel pipe that does not need to be flared is first manually placed against the clamping circular plate 204. At this time, all the clamping plates 205 are positioned within the internal space of the steel pipe. Simultaneously, an external motor drives the gear shaft to rotate, which in turn drives the drive gear 201 to rotate synchronously. Therefore, through the meshing between the drive gear 201 and all the clamping racks 203, all the clamping racks 203 are moved away from the drive gear 201. Thus, the three clamping plates 205 cooperate with each other to clamp the placed steel pipe. The clamping plates 205 and 206 are designed to facilitate subsequent flaring operations. The rubber pads 207 deform upon contact with the inside of the steel pipe, increasing friction between them and preventing relative rotation that could affect the flaring process. The elastic ropes 206 ensure that the outer arc surfaces of the three clamping plates 205 remain aligned with the inner wall of the steel pipe, facilitating the placement and clamping of the pipe and preventing the inner arc surfaces of the clamping plates 205 from contacting the inner wall and failing to clamp the pipe.

[0028] See Figure 3 A support plate 21 is fixedly provided on the right end face of the part of the clamping rack 203 away from the drive gear 201. An auxiliary cylinder 210 is fixedly provided on the end face of the support plate 21 facing the drive gear 201. An auxiliary plate 211 is hinged to the telescopic end of the auxiliary cylinder 210. The auxiliary plate 211 has an arc-shaped structure, and the inner arc surface of the auxiliary plate 211 is in close contact with the placed steel pipe.

[0029] During the placement of the steel pipe, the auxiliary cylinder 210 is activated, causing its telescopic end to extend. The telescopic end of the auxiliary cylinder 210 drives the corresponding auxiliary plate 211 to move closer to the steel pipe. Thus, the three auxiliary plates 211 work together to first hug the steel pipe, ensuring that the axis of the steel pipe is collinear with the axis of the clamping shaft 20, which facilitates the subsequent clamping plate 205 to clamp and fix the steel pipe.

[0030] See Figure 4 The right end face of the vertical portion of the placement plate 1 is provided with an annular support groove 22. The inner wall of the support groove 22 is provided with an annular limiting groove 220, and the radius of the limiting groove 220 is larger than the radius of the support groove 22. The left end face of the rotating circular plate 200 is fixedly provided with three L-shaped arc plates 221 that are symmetrical about the axis of the rotating circular plate 200. The horizontal portion of the arc plate 221 slides in the support groove 22, and the vertical portion of the arc plate 221 slides in the limiting groove 220.

[0031] After the steel pipe is clamped and installed, the external motor drives the clamping shaft 20 to rotate. At this time, the clamping shaft 20 drives the steel pipe to rotate through the rotating circular plate 200. The flaring mechanism 4 then performs flaring operations on the steel pipe. During this process, the arc-shaped plate 221 slides within the support groove 22 and the limiting groove 220. The limiting groove 220 and the vertical part of the arc-shaped plate 221 cooperate with each other and provide a limiting and supporting effect on the arc-shaped plate 221. This ensures that the steel pipe, the rotating circular plate 200, and the clamping shaft 20 are coaxial after clamping, thereby avoiding the problem of large flaring errors during the flaring operation.

[0032] See Figure 3 The support mechanism 3 includes a moving groove 30. The upper end face of the horizontal part of the placement plate 1 is provided with a moving groove 30 from left to right. An electric slider is slidably arranged in the moving groove 30. A transition plate 300 is fixedly arranged on the upper end face of the electric slider. Two symmetrical support plates 301 are hinged on the upper end face of the transition plate 300. The support plates 301 have an arc-shaped structure. Spring plates 302 are fixedly arranged on both the front and rear end faces of the electric slider in the moving groove 30. Two symmetrical compression springs 303 are fixedly arranged between the spring plates 302 and the corresponding support plates 301.

[0033] During the placement of the steel pipe, the electric slider in the moving groove 30 drives the transition plate 300 to move left and right to the designated position. At this time, the transition plate 300 is located in the middle of the steel pipe. After the steel pipe is placed, the weight of the steel pipe itself acts on the support plate 301. At this time, the corresponding compression spring 303 is compressed, and the elastic force generated by the deformation of the compression spring 303 causes the two support plates 301 to clamp and support the placed steel pipe, maintaining the balance of the steel pipe during the placement and clamping process, which facilitates the clamping and placement of the steel pipe and subsequent flaring operations.

[0034] See Figure 3 The rear end face of the electric slider in the moving groove 30 is fixedly provided with two symmetrical connecting columns. The rear end faces of the two connecting columns are jointly fixedly provided with a vertical plate 31. The front end face of the vertical plate 31 is fixedly provided with an operating plate 310. The upper end face of the operating plate 310 is provided with a pressing groove. A pressing column 311 is slidably provided in the pressing groove. An arc-shaped pressing plate 312 is fixedly provided on the lower end face of the pressing column 311. A lifting plate 313 is fixedly provided on the upper end face of the pressing column 311. A pressing cylinder 314 is fixedly provided on the upper end face of the operating plate 310, and the telescopic end of the pressing cylinder 314 is fixedly connected to the lifting plate 313.

[0035] During the placement of the steel pipe, as the steel pipe is placed between the two support plates 301, the clamping cylinder 314 operates, causing its telescopic end to retract. At this time, the telescopic end drives the corresponding lifting plate 313 to move down synchronously. The lifting plate 313, through the clamping column 311, drives the clamping plate 312 to approach the steel pipe and clamp and press the steel pipe. Under the clamping force of the clamping plate 312, the two support plates 301 can clamp the steel pipe, thus facilitating the placement and clamping of the steel pipe and the subsequent flaring operation of the steel pipe.

[0036] See Figure 3 The inner arc surface of the support plate 301 is fixedly provided with multiple sets of plates evenly distributed around its arc surface. Each set of plates includes two symmetrical mounting plates 32. A rotating shaft 320 is rotatably provided between the two corresponding mounting plates 32. A rotating roller 321 that is in close contact with the steel pipe is fixedly sleeved on the rotating shaft 320. The inner arc surface of the pressing plate 312 is fixedly provided with two symmetrical plates that are the same as those on the support plate 301. Each set of plates contains two symmetrical mounting plates 32, and the same rotating shaft 320 and rotating roller 321 as those on the support plate 301 are provided between the corresponding mounting plates 32.

[0037] After the steel pipe is clamped and placed, the external electric motor drives the clamping shaft 20 to rotate. At this time, the clamping shaft 20 drives the steel pipe to rotate through the rotating circular plate 200. The flaring device then performs the flaring operation on the steel pipe. During this process, the rotating roller 321 is in close contact with the steel pipe, thereby reducing the friction between the steel pipe and the support plate 301 and the pressure plate 312 while the support plate 301 and the pressure plate 312 hug and support the steel pipe. This facilitates the rotation and flaring operation of the steel pipe and avoids the problem of large flaring operation errors caused by the friction between the support plate 301 and the pressure plate 312 and the steel pipe, which could lead to the final flaring not meeting the standards.

[0038] See Figure 2 and Figure 5The flaring mechanism 4 includes a transverse sliding groove 40. Two symmetrical transverse sliding grooves 40, arranged from left to right, are opened on the upper surface of the horizontal portion of the placement plate 1. An electric slider is slidably disposed within each transverse sliding groove 40. A transverse plate 400 is fixedly disposed on the upper surface of each of the two electric sliders. Four flaring grooves 401, symmetrical about the axis of the rotating circular plate 200, are opened on the left end surface of the transverse plate 400. A sliding plate 402 is slidably disposed within each flaring groove 401. An arc-shaped flaring plate 403 is fixedly disposed on the left end surface of the sliding plate 402. An L-shaped plate 404 is fixedly disposed on the right end portion of the sliding plate 402. A placement circular plate 405 is fixedly disposed on both the front and rear end surfaces of the L-shaped plate 404 via connecting blocks. A flaring shaft is rotatably disposed between two corresponding placement circular plates 405. A flaring component 406 is fixedly sleeved on the flaring shaft. The flaring component 406 is... The structure is a single-leaf hyperboloid. A fixed post 41 is fixedly installed on the right end face of the transverse plate 400. A frustum 410 that mates with the flared part 406 is slidably installed on the fixed post 41. Two symmetrical fixed plates 411 are fixedly installed on the right end face of the transverse plate 400. A mating plate 412 that is fixedly connected to the fixed post 41 is fixedly installed on the right end face of the two fixed plates 411. A mating groove 413 is opened on the opposite face of the two fixed plates 411. A mating block is slidably installed in the mating groove 413. A fixing strip 414 is fixedly installed on the end face of the mating block away from the corresponding mating groove 413. The fixing strip 414 is fixedly connected to the frustum 410. A flared cylinder 415 that corresponds one-to-one with the fixing strip 414 is fixedly installed on the left end face of the mating plate 412. The telescopic end of the flared cylinder 415 is fixedly connected to the corresponding fixing strip 414.

[0039] After the steel pipe is placed and clamped, the external heating equipment heats the part of the steel pipe that needs to be flared. Then, the electric sliders in the two transverse sliding grooves 40 work simultaneously to drive the transverse sliding plate 400 to move to the left, so that the flaring plate 403 moves into the steel pipe. Then, the flaring cylinder 415 works to extend its telescopic end, and its telescopic end drives the truncated cone 410 to move to the left through the fixing bar 414. The truncated cone 410 controls all the flaring parts 406 through mutual cooperation with the flaring parts 406. At this time, all the flaring parts 406 are away from the truncated cone 410. Therefore, the flaring parts 406, by placing the circular plate 405 and the L-shaped plate 404, make the corresponding sliding plate 402 away from the truncated cone 410, so that the four flaring plates 403 are widened and pressed tightly against the inner wall of the steel pipe. Then, as the truncated cone 410 continues to move to the left, the external motor works to drive the steel pipe to rotate through the clamping shaft 20. At this time, all the flaring plates 403 cooperate to perform the flaring operation on the steel pipe.

[0040] See Figure 5 and Figure 6The right end face of the transverse plate 400 has two symmetrical scale grooves 42 arranged from top to bottom. A vertical moving block is slidably arranged in the scale groove 42. A transverse plate 420 is fixedly arranged on the right end face of the two vertical moving blocks. A T-shaped limiting groove 421 is provided on the right end face of the transverse plate 400. A limiting circular plate 422 is slidably arranged in the longitudinal part of the limiting groove 421. A placement groove is provided on the right end face of the transverse plate 420. A limiting post 423 placed in the placement groove is fixedly arranged on the right end face of the limiting circular plate 422. A threaded groove is provided on the right end of the limiting post 423. A limiting ring 424 that is threadedly engaged with the limiting post 423 is provided on the right end of the limiting post 423. A scale assembly 425 that cooperates with the transverse plate 420 is fixedly arranged on the right end face of the transverse plate 400.

[0041] When flaring the steel pipe, the operator first locates the designated position according to the required flaring size and the scale component 425. Then, the operator moves the transverse plate 420 to the designated position. Simultaneously, the limiting ring 424 is installed through the threaded engagement between the limiting ring 424 and the limiting post 423. The limiting plate 422 and the limiting groove 421 cooperate to limit the limiting post 423, thus fixing the transverse plate 420. During the flaring operation, as the frustum 410 moves to the left, the uppermost transverse block moves up until it contacts the transverse plate 420 and is stopped by it. The final flaring size of the steel pipe is the required size, preventing large dimensional deviations after flaring that could affect the subsequent use of the steel pipe in the socket.

[0042] In practice, the electric slider in the movable slot 30 first moves the transition plate 300 to a designated position. At this point, the transition plate 300 is positioned in the middle of the steel pipe. After the steel pipe is placed, its own weight acts on the support plate 301, compressing the corresponding clamping spring 303. The elastic force generated by the deformation of the clamping spring 303 clamps and supports the placed steel pipe, maintaining its balance during placement and clamping. Then, the end of the steel pipe that does not need to be flared is manually pressed against the abutting circular plate 204. At this point, all the clamping plates 205 are placed within the internal space of the steel pipe. Simultaneously, an external motor drives the gear shaft to rotate, which in turn drives the drive gear 201 to rotate synchronously. Therefore, through the meshing between the drive gear 201 and all the clamping racks 203, all the clamping racks 203 are moved away from the drive gear 201. Thus, the three clamping plates 205 cooperate to clamp the placed steel pipe.

[0043] Finally, after the steel pipe is placed and clamped, the external heating equipment heats the part of the steel pipe that needs to be flared. Then, the electric sliders in the two transverse sliding grooves 40 work simultaneously to drive the transverse sliding plate 400 to move to the left. The flaring cylinder 415 works to extend its telescopic end. Its telescopic end drives the truncated cone 410 to move to the left through the fixing bar 414. The truncated cone 410 controls all the flaring parts 406 through mutual cooperation with the flaring parts 406. At this time, all the flaring parts 406 are away from the truncated cone 410. Therefore, the flaring parts 406, by placing the circular plate 405 and the L-shaped plate 404, make the corresponding sliding plate 402 away from the truncated cone 410, so that the four flaring plates 403 are widened and tightly attached to the inner wall of the steel pipe. Then, as the truncated cone 410 continues to move to the left, the external motor works to drive the steel pipe to rotate through the clamping shaft 20. At this time, all the flaring plates 403 cooperate to perform the flaring operation on the steel pipe.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A socket-type flaring device, comprising a placement plate, a clamping mechanism, a supporting mechanism, and a flaring mechanism, characterized in that: The placement plate is placed horizontally and is L-shaped. A clamping mechanism is provided on the right end face of the vertical part of the L-shaped plate. A support mechanism and a flaring mechanism are provided on the upper end face of the horizontal part of the placement plate from left to right, and both are located to the right of the clamping mechanism. The clamping mechanism includes a clamping shaft. The clamping shaft is rotatably mounted on the right end face of the placement plate. A rotating circular plate is fixedly mounted on the right end face of the clamping shaft. A gear shaft is rotatably mounted on the right end face of the rotating circular plate. A drive gear is fixedly mounted on the gear shaft. Three rack grooves are symmetrical about the center of the gear shaft axis on the right end face of the rotating circular plate. A rack plate is slidably mounted in the rack groove. The three rack plates have different thicknesses. A clamping rack that meshes with the drive gear is fixedly mounted on the right end face of the rack plate. A pressing circular plate is rotatably mounted on the right end face of the middle position of the clamping rack through a connecting shaft. A clamping plate is fixedly mounted on the right end face of the pressing circular plate. The clamping plate has an arc-shaped structure. An elastic rope is fixedly mounted between each pair of the three clamping plates. A rubber pad is fixedly mounted on the outer arc surface of the clamping plate. The flaring mechanism includes a transverse sliding groove. Two transverse sliding grooves are provided on the upper end face of the horizontal part of the placement plate, which are symmetrical from front to back and from left to right. An electric slider is slidably arranged in the transverse sliding groove, and a transverse sliding plate is fixedly arranged on the upper end face of the two electric sliders. The right end face of the transverse plate has two symmetrical scale grooves arranged from top to bottom. Vertical moving blocks are slidably arranged in the scale grooves. A transverse plate is fixedly arranged on the right end face of the two vertical moving blocks. A T-shaped limiting groove is provided on the right end face of the transverse plate. A limiting circular plate is slidably arranged in the longitudinal part of the limiting groove. A placement groove is provided on the right end face of the transverse plate. A limiting post is fixedly arranged on the right end face of the limiting circular plate and placed in the placement groove. A threaded groove is provided on the right end of the limiting post. A limiting ring that is threadedly engaged with the limiting post is provided on the right end of the limiting post. A scale assembly that cooperates with the transverse plate is fixedly arranged on the right end face of the transverse plate.

2. The socket-type flaring device according to claim 1, characterized in that: A support plate is fixedly installed on the right end face of the clamping rack away from the drive gear. An auxiliary cylinder is fixedly installed on the end face of the support plate facing the drive gear. An auxiliary plate is hinged to the telescopic end of the auxiliary cylinder. The auxiliary plate has an arc-shaped structure, and the inner arc surface of the auxiliary plate is in close contact with the placed steel pipe.

3. The socket-type flaring device according to claim 1, characterized in that: The right end face of the vertical portion of the placement plate is provided with an annular support groove, and the inner wall of the support groove is provided with an annular limiting groove, the radius of which is larger than that of the support groove. The left end face of the rotating circular plate is fixedly provided with three L-shaped arc plates that are symmetrical about the axis of the rotating circular plate. The horizontal portion of the arc plate slides in the support groove, and the vertical portion of the arc plate slides in the limiting groove.

4. The socket-type flaring device according to claim 1, characterized in that: The support mechanism includes a moving groove. The upper end face of the horizontal part of the placement plate is provided with a moving groove from left to right. An electric slider is slidably arranged in the moving groove. A transition plate is fixedly arranged on the upper end face of the electric slider. Two support plates with front and rear symmetry are hinged on the upper end face of the transition plate. The support plates have an arc structure. Spring plates are fixedly arranged on both the front and rear end faces of the electric slider in the moving groove. Two left and right symmetrical compression springs are fixedly arranged between the spring plates and the corresponding support plates.

5. The socket-type flaring device according to claim 4, characterized in that: The rear end face of the electric slider in the moving groove is fixedly provided with two symmetrical connecting columns. The rear end face of the two connecting columns is fixedly provided with a vertical plate. The front end face of the vertical plate is fixedly provided with an operating plate. The upper end face of the operating plate is provided with a pressing groove. A pressing column is slidably provided in the pressing groove. An arc-shaped pressing plate is fixedly provided on the lower end face of the pressing column. A lifting plate is fixedly provided on the upper end face of the pressing column. A pressing cylinder is fixedly provided on the upper end face of the operating plate, and the telescopic end of the pressing cylinder is fixedly connected to the lifting plate.

6. The socket-type flaring device according to claim 4, characterized in that: The inner arc-shaped surface of the support plate is fixedly provided with multiple sets of plate groups evenly distributed along the circumference of its arc-shaped surface. Each plate group includes two left-right symmetrical mounting plates. The two corresponding mounting plates are rotatably connected by a rotating shaft. A rotating roller that is tightly fitted to the steel pipe is fixedly sleeved on the rotating shaft. The inner arc-shaped surface of the pressing plate is fixedly provided with two front-back symmetrical plate groups that are the same as those on the support plate. Each plate group is provided with two left-right symmetrical mounting plates, and the corresponding mounting plates are connected by the same rotating shaft and rotating roller as those on the support plate.

7. The socket-type flaring device according to claim 1, characterized in that: The left end face of the transverse plate has four flared grooves symmetrical about the center of the rotating circular plate axis. A sliding plate is slidably mounted within each flared groove. An arc-shaped flared plate is fixedly mounted on the left end face of each sliding plate. An L-shaped plate is fixedly mounted on the right end of the sliding plate. Circular plates are fixedly mounted on both the front and rear ends of the L-shaped plate via connecting blocks. A flared shaft is rotatably mounted between two corresponding circular plates. A flared component, which is a single-leaf hyperboloid curved surface structure, is fixedly fitted onto the flared shaft. A fixing post is fixedly mounted on the right end face of the transverse plate, and a sliding component is mounted on the fixing post. There is a frustum that mates with the flared part. Two symmetrical fixed plates are fixedly installed on the right end face of the transverse plate. The right end face of the two fixed plates is fixedly installed with a mating plate that is fixedly connected to the fixed column. The opposite faces of the two fixed plates are provided with mating grooves. A mating block is slidably installed in the mating groove. A fixing strip is fixedly installed on the end face of the mating block away from the corresponding mating groove, and the fixing strip is fixedly connected to the frustum. A flared cylinder corresponding to the fixing strip is fixedly installed on the left end face of the mating plate, and the telescopic end of the flared cylinder is fixedly connected to the corresponding fixing strip.

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