A pressure shaping device for pipe processing

Abstract

This invention relates to the technical field of pipe shaping equipment, specifically disclosing a pressure shaping device for pipe processing, including a forming seat and a forming block mounted on a frame, and further including a support assembly and a drive assembly; the support assembly includes: a mounting frame horizontally slidably mounted on the frame, multiple inner support blocks mounted on the mounting frame, and multiple support blocks respectively sleeved on the outside of each inner support block, the side of the support block including a vertical portion and an inclined portion above the vertical portion, the inclined portion being inclined in the direction towards the inside of the support block, adjacent two inner support blocks being rotatably engaged, the rotation axis of the inner support block being set horizontally and located between the inclined portion and the vertical portion; the drive assembly is connected to the mounting frame; the pressure shaping device for pipe processing of this invention has the effect of improving the accuracy of pipe processing.

Description

Technical Field

[0001] This invention relates to the technical field of pipe shaping equipment, and specifically to a pressure shaping device for pipe processing. Background Technology

[0002] To adapt pipelines to different installation scenarios and optimize system functionality, pressure bending is often required. For example, in oil and gas transportation and chemical fluid transmission pipelines, it is frequently necessary to change the direction of fluid transport. Pressure bending and shaping allows for precise bending of stainless steel, alloy steel, and other raw material pipelines to the appropriate angles, and further shaping ensures a regular bend cross-section. Additionally, some pipelines require specific curvature bends due to terrain or equipment layout during actual installation. Pressure bending and shaping technology can create curved pipeline sections that conform to the laying path, and simultaneously produce curved transition components for connections in oil and gas pipeline systems, ensuring the overall sealing and connectivity of the pipeline.

[0003] Patent document CN106862331B discloses a pipe bending device, including a base, a bending platform, and an upper platform. A forming seat is fixedly installed at the upper end of the bending platform, and the forming seat has a forming cavity with an opening at the top. A telescopic support rod is provided at the bottom of the base, and a base plate is provided at the lower end of the telescopic support rod. Several sets of lower guide pins are fixedly installed between the base and the bending platform, and several sets of upper guide pins are fixedly installed between the bending platform and the upper platform. An undulating plate is slidably installed on the lower guide pins. Undulating arms are provided at the upper ends of both sides of the undulating plate, with the upper ends of the undulating arms protruding from the bending platform. A clamping arm extending towards the center is provided at the upper end of the undulating arm. A screw is threadedly installed at the middle of the undulating plate. Several openings communicating with the forming cavity are provided in the forming seat and the bending platform. A bending structure is also installed on the upper platform. The bending structure includes a hydraulic cylinder fixedly installed on the upper part of the upper platform and a guide plate installed horizontally in the upper guide column. A forming block is installed at the lower end of the guide plate, and the upper end of the guide plate is fixedly connected to the telescopic rod of the hydraulic cylinder. The hydraulic cylinder drives the forming block to press the pipe, and cooperates with the forming seat to shape the pipe.

[0004] However, this solution still has the following problems: During the pipe bending and shaping process, although the arc-shaped surface of the forming block is intended to fit the outer wall of the pipe, it is difficult to form a uniform constraint on the pipe cross-section from all directions by linear pressing of a single arc-shaped surface alone. When the hydraulic cylinder applies pressure, the pipe wall in the compressed area will undergo plastic deformation in the unconstrained direction, causing the cross-section to shift from a circle to an ellipse. This deformation is particularly noticeable under conditions with a large bending rate, directly compromising the accuracy of the pipe's cross-section.

[0005] Furthermore, when the curved side of the forming block contacts the pipe, the pipe wall in the contact area will experience localized contraction under pressure. Because the pipe's inner wall lacks corresponding support structures, the material on the inner wall of the contact area cannot expand and compensate in time during pressure transmission, easily leading to localized accumulation and wrinkling. This defect not only affects the smoothness of the pipe's inner wall but may also cause stress concentration, reducing the pipe's pressure-bearing capacity. Summary of the Invention

[0006] This invention provides a pressure shaping device for pipe processing, which aims to solve the problems in related technologies where the cross-section is prone to elliptical displacement and wrinkles are easily generated on the inner wall during pipe bending and shaping, thus affecting the cross-sectional accuracy and pressure bearing performance.

[0007] The pressure shaping device for pipe processing of the present invention includes a forming seat and a forming block mounted on a frame, and further includes a support assembly and a drive assembly. The support assembly includes a mounting frame horizontally slidably mounted on the frame, a plurality of inner support blocks mounted on the mounting frame, and a plurality of support blocks respectively sleeved on the outside of each inner support block. The side of each support block includes a vertical portion and an inclined portion above the vertical portion. The inclined portion is inclined in the direction toward the inside of the support block. Adjacent inner support blocks are rotatably fitted. The axis of rotation of the inner support block is set in the horizontal direction and located between the inclined portion and the vertical portion. The drive assembly is connected to the mounting frame. When the vertical portions on the support blocks abut against each other, they are in a horizontal position, and the plurality of support blocks are arranged in the same horizontal direction. When the inclined portions abut against each other, they are in a support position, and the plurality of support blocks are arranged in an arc shape. The drive assembly drives the horizontal support blocks into the pipe. As the pipe deforms, the support blocks rotate to the support position, while supporting the inner wall of the pipe.

[0008] The effect is that by setting support blocks, the pipe is supported during the shaping process, reducing pipe deformation. Specifically, the pipe to be processed is first placed horizontally on the forming seat. Then, the drive assembly moves the mounting frame, which in turn moves multiple support blocks into the pipe. The support blocks support the pipe. During shaping, the forming blocks move downwards towards the pipe and press it down. Under external force, the pipe gradually deforms. During this process, the multiple support blocks gradually rotate from a horizontal position to a supporting position, and the support blocks maintain support on the inner wall of the pipe during rotation. This ensures that the pipe is subjected to uniform force, avoids irregular deformation, reduces wrinkles on the pipe sidewalls, and improves the processing accuracy of the pipe.

[0009] Preferably, the support block includes a support portion and a sliding portion. The support portion has an installation groove, the sliding portion is slidably fitted into the installation groove, the support portion is slidably sleeved on the outside of the inner support block, the side of the inner support block has an inclined top block that cooperates with the sliding portion, the inclined surface of the inclined top block abuts against the sliding portion, an elastic component connecting the mounting frame and the inner support block is provided, a pushing component is provided on the forming seat, and the outer diameter of the support portion is smaller than the inner diameter of the pipe. When the support block in the horizontal position passes through the pipe and cooperates with the pushing component, it stops moving. The mounting frame drives the inner support block to move relative to the support block and compress the elastic component. At the same time, the inclined top block pushes the sliding portion to move to the outside of the installation groove and abut against the inner wall of the pipe.

[0010] Its effect is that after the support block moves into the pipe and abuts against the top rod, the support block stops moving. When the mounting bracket continues to move, it can drive the inner support block to move relative to the support part, which can push the sliding part to the outside of the mounting groove, so that the sliding part abuts against the inner wall of the pipe and supports the pipe. At the same time, the support part is set so that the sliding part can be moved to the outside of the mounting groove when the pipe needs to be supported. After processing is completed, it can be retracted. Since the outer diameter of the support part is smaller than the inner diameter of the pipe, the support block can be pulled out of the pipe when the sliding part is retracted.

[0011] Preferably, the elastic component includes: a sleeve rod connected to the inner support block, an inner rod that slides with the sleeve rod, and an elastic element one sleeved on the outside of the sleeve rod and the inner rod. The inner rod is connected to the mounting frame, and the elastic element one is connected to the support block and the mounting frame respectively.

[0012] Its effect is that, initially, the mounting frame drives the support block to move synchronously through the elastic element. After the support block abuts against the top rod, the mounting frame can continue to move and compress the elastic element, so that the inner support block can move relative to the support part, thereby adjusting the position of the sliding part.

[0013] Preferably, the push assembly includes: a connecting part connected to the forming seat, a push rod mounted on the connecting part, and the vertical part of the support block abutting against the push rod after passing through the pipe.

[0014] Preferably, multiple sliding parts and mounting grooves are arranged around the center of the support block, with multiple sliding parts corresponding to multiple mounting grooves one-to-one, and multiple inclined top blocks corresponding to multiple sliding parts.

[0015] Its effect is that by setting multiple inclined top blocks, the positions of multiple sliding parts can be adjusted simultaneously when the inner support block moves.

[0016] Preferably, a sliding rod is slidably mounted on the mounting frame, and a correction plate is provided at one end of the sliding rod near the pipe. An elastic element is sleeved on the outside of the sliding rod. When the mounting frame moves closer to the pipe, the correction plate is driven by the sliding rod to abut against the pipe, and the correction plate drives the pipe to abut against the top rod to correct the position of the pipe.

[0017] Preferably, the connecting part includes: a receiving plate connected to the forming seat, a receiving rod, and an elastic element three sleeved on the outside of the receiving rod. The receiving rod passes through the receiving plate and is slidably assembled on the receiving plate. The top rod is installed on the receiving rod, and the elastic element three is connected to the receiving plate and the top rod respectively.

[0018] Preferably, a limiting sleeve is provided on the receiving plate, and a limiting rod connected to the top rod is slidably provided inside the limiting sleeve. The limiting rod is connected to the top rod. After the pipeline is corrected, the limiting rod moves into the limiting sleeve, and the top rod abuts against the end of the limiting sleeve.

[0019] Preferably, the inner rod and the sleeve rod are rotatably coupled, and a torsion spring is provided at the connection between the sleeve rod and the inner rod, which is connected to both. The torsion spring is used to drive the sleeve rod to rotate to a horizontal state.

[0020] Preferably, the drive assembly includes: a drive motor mounted on the frame, a lead screw rotatably mounted on the frame, the output end of the drive motor being connected to the lead screw to drive the lead screw to rotate, a guide rail provided on the frame for limiting the mounting bracket, the mounting bracket sliding horizontally on the frame via the guide rail, and the mounting bracket being threadedly engaged with the lead screw.

[0021] Beneficial effects:

[0022] This invention uses multiple support blocks to support the inner wall of the pipe during bending, ensuring uniform stress on the pipe as a whole, reducing irregular deformation during bending, and improving the processing accuracy of the pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the forming seat and the forming block in this invention.

[0025] Figure 3 This is a schematic diagram of the support component in this invention.

[0026] Figure 4 This is a schematic diagram of the support block in this invention.

[0027] Figure 5 This is a schematic diagram of the internal structure of the support block in this invention.

[0028] Figure 6 This is a schematic diagram of the internal support block in this invention.

[0029] Figure 7 This is a schematic diagram of the sliding part and the supporting part in this invention.

[0030] Figure 8 This is a schematic diagram showing the positional relationship between the top rod and the support block in this invention.

[0031] Figure 9 This is a partial exploded view of the inner rod and sleeve rod of the present invention.

[0032] Figure 10 This is a schematic diagram of the structure of the pushing component in this invention.

[0033] Figure 11 This is a schematic diagram showing the state of multiple support blocks in the support position in this invention.

[0034] Figure 12 This is a schematic diagram showing the state when the inclined portions on the two support blocks of the present invention are in contact.

[0035] Figure 13 This is a partial exploded view of the sliding part and the inclined top block in this invention.

[0036] Figure label:

[0037] 01. Pipeline; 1. Frame; 11. Forming seat; 12. Forming block; 121. Hydraulic cylinder; 2. Support assembly; 3. Drive assembly; 31. Drive motor; 32. Lead screw; 4. Mounting bracket; 41. Slide rod; 42. Correction plate; 43. Elastic component two; 5. Inner support block; 51. Inclined top block; 511. Connecting block; 52. Stop bar; 6. Support block; 61. Support part; 611. Mounting groove; 62. Sliding part; 621. Connecting groove; 7. Vertical part; 71. Inclined part; 8. Elastic component; 81. Sleeve rod; 82. Inner rod; 83. Elastic component one; 9. Pushing assembly; 91. Connecting part; 911. Receiving plate; 912. Receiving rod; 913. Elastic component three; 92. Top rod; 93. Limiting sleeve; 94. Limiting rod. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figures 1 to 13As shown, the pressure shaping equipment for pipe processing of the present invention includes a forming seat 11 and a forming block 12 mounted on a frame 1. A downwardly positioned hydraulic cylinder 121 is fixedly mounted on the top of the frame 1. The forming block 12 is mounted on the end of the piston rod of the hydraulic cylinder 121 and is distributed vertically in correspondence with the forming seat 11 below. The upper surface of the forming seat 11 is provided with an arc-shaped groove that matches the curvature of the target pipe 01. The side of the forming block 12 near the forming seat 11 is processed into an arc-shaped structure that fits the arc-shaped groove, ensuring that the pipe 01 is subjected to uniform force during the shaping process. In addition, to adapt to the needs of different shaping stations, the forming seat 11 is mounted on the guide rail of the frame 1 by a sliding assembly method. A push cylinder can be selectively configured on the side of the frame 1. The output end of the push cylinder is fixedly connected to the side of the forming seat 11, and the horizontal position of the forming seat 11 is adjusted by the extension and retraction of the cylinder.

[0040] In practice, the metal pipe 01 to be processed is first heated to the preset process temperature using a dedicated heating device. Then, the pipe 01 is placed horizontally in the arc-shaped groove of the forming seat 11. The push cylinder is activated, causing the forming seat 11, along with the pipe 01, to move smoothly and precisely to the underside of the forming block 12. Subsequently, the hydraulic cylinder 121 drives the piston rod downwards, causing the forming block 12 to slowly approach the forming seat 11. The stable pressure output by the hydraulic cylinder 121 gradually presses down on the pipe 01. Under this pressure, the metal pipe 01 gradually deforms until it completely conforms to the inner wall of the arc-shaped groove of the forming seat 11, ultimately forming an arc-shaped profile that meets the design requirements, thus completing the shaping process.

[0041] Reference Figures 2 to 5 A support component 2 and a drive component 3 are also provided on the frame 1. The drive component 3 cooperates with the support component 2. After the forming seat 11 moves to the bottom of the forming block 12, the drive component 3 drives the support component 2 to the pipe 01. When pressure is applied to the pipe 01, the drive component 3 supports the pipe 01 to reduce the phenomenon of irregular deformation of the pipe 01.

[0042] Reference Figures 3 to 6The support assembly 2 includes: a mounting frame 4, inner support blocks 5, and support blocks 6. The mounting frame 4 slides horizontally towards the forming seat 11 on the frame 1. Multiple inner support blocks 5 are provided and mounted on the mounting frame 4. Multiple support blocks 6 are provided corresponding to the multiple inner support blocks 5. The support blocks 6 are sleeved on the outside of the inner support blocks 5. Two adjacent inner support blocks 5 are rotatably connected, and the rotation axis of the inner support block 5 is set in the horizontal direction and perpendicular to the pipe 01. During assembly, the inner support blocks 5 and support blocks 6 are assembled alternately. The specific steps are as follows: first, insert the first inner support block 5 into the first support block 6, then rotatably connect the end of the second inner support block 5 to the first inner support block 5 through a pin, and then sleeve the second support block 6 on the outside of the second inner support block 5. This process is repeated to complete the assembly of all inner support blocks 5 and support blocks 6. The support block 6 is circular. The side of the support block 6 includes a vertical part 7 and an inclined part 71. The inclined part 71 is located above the vertical part 7, that is, the vertical part 7 is the lower half of the support block 6 and the inclined part 71 is the upper half of the support block 6. The rotational connection of the two inner support blocks 5 is located between two adjacent support blocks 6, and the rotation axis of the inner support block 5 is located between the vertical part 7 and the inclined part 71.

[0043] Reference Figure 8 , Figure 11 , Figure 12 The inclined portion 71 is inclined along the direction of the interior of the support block 6. When the vertical portions 7 on the support block 6 abut against each other, the support block 6 is in a horizontal position. At this time, the centers of multiple support blocks 6 are located on the same horizontal line, that is, the multiple inner support blocks 5 are also on the same horizontal line. When the inclined portions 71 on the support block 6 abut against each other, the support block 6 is in a supporting position. At this time, the centers of multiple support blocks 6 are distributed in an arc shape, and the multiple inner support blocks 5 are also distributed in an arc shape.

[0044] The drive assembly 3 is connected to the mounting bracket 4, which allows the position of the mounting bracket 4 to be adjusted, thereby adjusting the positions of the inner support block 5 and the support block 6 through the mounting bracket 4.

[0045] Initially, the support block 6 is in a horizontal position. When the forming seat 11 moves below the forming block 12, the end of the pipe 01 corresponds to the support block 6, and the center lines of the multiple support blocks 6 are on the same straight line as the center line of the pipe 01. Then, the drive assembly 3 drives the horizontal support block 6 to approach the pipe 01 until the support block 6 moves into the interior of the pipe 01 to support the inner wall of the pipe 01. Subsequently, the forming block 12 moves to bend the pipe 01. As the pipe 01 is gradually bent, the inclined part 71 on the support block 6 gradually abuts and rotates to the support position. At the same time, the support block 6 supports the inner wall of the pipe 01, forming a full-stroke dynamic support. This ensures that the side wall of the pipe 01 is subjected to uniform force during the bending process, effectively suppressing problems such as irregular bulges, dents, or uneven wall thickness caused by local stress concentration, and improving the bending accuracy of the pipe 01.

[0046] Reference Figures 5 to 7 The support block 6 includes a support portion 61 and a sliding portion 62. A vertical portion 7 and an inclined portion 71 are both located on the support portion 61. A mounting groove 611 is formed on the support portion 61, and the sliding portion 62 is installed within the mounting groove 611. The support portion 61 is slidably fitted onto the outside of the inner support block 5, and the sliding portion 62 slides within the mounting groove 611 in a direction toward the inner support block 5. An inclined top block 51 is provided on the side of the inner support block 5, cooperating with the sliding portion 62. The inclined surface of the inclined top block 51 is located on the side closest to the sliding portion 62, and abuts against the sliding portion 62.

[0047] Reference Figure 8 , Figure 9 An elastic component 8 is provided between the mounting bracket 4 and the support block 6 to connect the two, allowing the mounting bracket 4 to move relative to the support block 6. A push component 9 is provided on the forming seat 11, located at the end of the pipe 01 opposite to the mounting bracket 4. The outer diameter of the support part 61 is smaller than the inner diameter of the pipe 01. The sliding part 62 is initially located within the mounting groove 611, at which point the outer side of the sliding part 62 and the outer side of the support part 61 form a complete circle.

[0048] When the support block 6 enters the pipe 01, the sliding part 62 is located in the mounting groove 611. Since the outer diameter of the support part 61 is smaller than the inner diameter of the pipe 01, the support part 61 and the sliding part 62 can move into the pipe 01. During the process of the support block 6 entering the pipe 01, the mounting frame 4 drives the inner support block 5 and the support block 6 to move through the elastic component 8. After the horizontal support block 6 moves into the pipe 01, the outermost support block 6 stops moving after it abuts against the push component 9. The mounting frame 4 continues to move, compressing the elastic component 8 while driving the inner support block 5 to move relative to the support block 6. The inner support block 5 drives the sliding part 62 to slide towards the outside of the mounting groove 611 through the inclined push block 51 until the sliding part 62 abuts against the inner wall of the pipe 01 to support the pipe 01. In addition, during the bending process of the pipe 01, the position of the mounting frame 4 is fixed, and the elastic component 8 is compressed to the limit position so that the sliding part 62 will not move relative to the support part 61, thereby ensuring the stability of the sliding part 62 in supporting the pipe 01.

[0049] By providing a support part 61 and a sliding part 62, when inserted into the pipe 01, the sliding part 62 retracts, creating a gap between the sliding part 62 and the inner wall of the pipe 01. This allows the support part 61 and the sliding part 62 to be moved into the pipe 01. Simultaneously, after bending, the mounting bracket 4 drives the inner support block 5 to move in the opposite direction. The elastic component 8 releases its elastic force, allowing the inner support block 5 to move relative to the support part 61. This releases the thrust of the inner support block 5 on the sliding part 62, removing the support of the sliding part 62 on the inner wall of the pipe 01. Then, by continuing to pull the inner support block 5, the support block 6 and the inner support block 5 can be pulled out of the pipe 01. Since the thrust of the inner support block 5 on the sliding part 62 is removed, the sliding part 62 no longer abuts against the inner wall of the pipe 01, allowing it to be pulled out of the pipe 01. After the support block 6 is pulled out of the pipe 01, the elastic component 8 will push the vertical parts 7 of the two adjacent support blocks 6 to abut against each other again, so that they can be kept horizontal again, so as to provide auxiliary support for the pipe 01 during subsequent processing.

[0050] Reference Figure 8 , Figure 9 The elastic component 8 includes: a sleeve rod 81, an inner rod 82, and an elastic element 83. The sleeve rod 81 is connected to the inner support block 5 near the mounting frame 4. The inner rod 82 is located at the end of the sleeve rod 81 away from the inner support block 5. The elastic element 83 is a spring. The elastic element 83 is sleeved on the outside of the sleeve rod 81 and the inner rod 82. One end of the elastic element 83 is connected to the support block 6 near the mounting frame 4, and the other end is connected to the mounting frame 4.

[0051] When the mounting frame 4 moves, the elastic element 83, the sleeve rod 81 and the inner rod 82 drive the support block 6 and the inner support block 5 to move. When the support block 6 comes into contact with the push assembly 9, the support block 6 stops moving and the mounting frame 4 continues to move. The inner rod 82 drives the sleeve rod 81 to drive the inner support block 5 to move relative to the support block 6, so that different positions on the inclined top block 51 cooperate with the sliding part 62, thereby adjusting the position of the sliding part 62.

[0052] Reference Figure 8 , Figure 9 The inner rod 82 is fixedly connected to the mounting bracket 4, and the inner rod 82 is set in the horizontal direction. The inner rod 82 and the sleeve rod 81 are rotatably engaged. A torsion spring (not shown in the figure) is provided at the connection between the inner rod 82 and the sleeve rod 81 to connect the two. The torsion spring is used to drive the sleeve rod 81 to rotate to the horizontal state.

[0053] Initially, under the action of the torsion spring, the sleeve rod 81 is in a horizontal state, and the support block 6 is also in a horizontal state. When the pipe 01 is bent, the inner support block 5 will rotate accordingly, and the inner support block 5 connected to the sleeve rod 81 will also rotate accordingly. At this time, the sleeve rod 81 will rotate relative to the inner rod 82. When the support block 6 and the inner support block 5 are moved out of the pipe 01, the torsion spring can drive the sleeve rod 81 to rotate to a horizontal state again. At the same time, the elastic element 83 can push the support block 6 to move relative to the inner support block 5, and under the action of its own weight, the vertical part 7 of the support block 6 will abut against each other again and be in a horizontal state.

[0054] Multiple sliding parts 62 and mounting grooves 611 are arranged circumferentially around the center of the support block 6. Each sliding part 62 corresponds to one mounting groove 611. Multiple inclined top blocks 51 are also arranged correspondingly to multiple sliding parts 62. When the inner support block 5 slides relative to the support part 61, multiple inclined top blocks 51 can simultaneously drive multiple sliding parts 62 to move, thereby causing multiple sliding parts 62 to move out of the mounting grooves 611 at the same time.

[0055] Reference Figure 13 A connecting block 511 is provided on the inclined top block 51. A connecting groove 621 is provided on the side of the sliding part 62 near the inclined top block 51. The connecting block 511 is slidably assembled in the connecting groove 621. The connecting block 511 and the connecting groove 621 cooperate so that the sliding part 62 always maintains a contact state with the inclined top block 51. That is, when the inclined top block 51 moves relative to the support block 6, the position of the sliding part 62 changes uniformly. So that after the support block 6 is removed from the pipe 01, under the action of the elastic element 83, the inner support block 5 moves relative to the support block 6 to the initial position. At the same time, the connecting block 511 and the connecting groove 621 drive the sliding part 62 to move into the mounting groove 611 so as to retract the sliding part 62.

[0056] Reference Figure 8 , Figure 10The push assembly 9 includes a connecting part 91 and a push rod 92. The connecting part 91 is connected to the forming seat 11 and is located at the end of the pipe 01 away from the mounting bracket 4. The push rod 92 is mounted on the connecting part 91 and is arranged horizontally. After the support block 6 passes through the pipe 01, it abuts against the push rod 92. The push rod 92 restricts the movement of the support block 6 so that the inner support block 5 can move relative to the support block 6. The push rod 92 is positioned to correspond to the vertical part 7 of the support block 6, that is, the support block 6 abuts against the push rod 92 through its vertical part 7. This ensures that when the support block 6 abuts against the push rod 92, the multiple support blocks 6 can remain horizontal, facilitating the movement of the inner support block 5 relative to the support block 6.

[0057] Reference Figure 3 A sliding rod 41 is provided on the mounting frame 4, and the sliding rod 41 is arranged in the sliding direction toward the mounting frame 4. A correction plate 42 is provided at the end of the sliding rod 41 near the pipe 01. An elastic element 43 is sleeved on the outside of the sliding rod 41. One end of the elastic element 43 is connected to the correction plate 42, and the other end is connected to the mounting frame 4. The elastic element 43 is used to move the correction plate 42 away from the mounting frame 4. The correction plate 42 is located below the support block 6.

[0058] As the mounting frame 4 moves, the elastic element drives the alignment plate 42 to move closer to the pipe 01 until the alignment plate 42 abuts against the end of the pipe 01. The mounting frame 4 then continues to move, driving the pipe 01 closer to the top rod 92 via the alignment plate 42. The pipe 01 is then clamped between the top rod 92 and the alignment plate 42. Once the pipe 01 stops moving, the alignment of the pipe 01 is complete. The mounting frame 4 then continues to move, compressing the elastic element 43, while simultaneously driving the support block 6 into the pipe 01 for subsequent operations.

[0059] Reference Figure 3 , Figure 10 The connecting part 91 includes: a receiving plate 911, a receiving rod 912, and an elastic element 913. The receiving plate 911 is connected to the forming seat 11. The receiving rod 912 passes through the receiving plate 911 and is slidably mounted on the receiving plate 911, and the receiving rod 912 is arranged in the direction towards the pipe 01. The elastic element 913 is a spring, one end of which is connected to the top rod 92, and the other end is connected to the receiving plate 911. A limiting sleeve 93 is provided on the receiving plate 911, and a limiting rod 94 is slidably mounted in the limiting sleeve 93. The limiting rod 94 is connected to the top rod 92, and the limiting rod 94 is arranged parallel to the receiving rod 912.

[0060] When the correction plate 42 abuts against the pipe 01 and pushes the pipe 01 to move, the pipe 01 abuts against the push rod 92. The push rod 92 moves and compresses the elastic element 913, while simultaneously driving the limiting rod 94 to move within the limiting sleeve 93. When the limiting rod 94 has completely moved into the limiting sleeve 93, the push rod 92 stops moving. At this time, the pipe 01 is aligned with the forming block 12, completing the correction of the pipe 01. Subsequently, the mounting bracket 4 drives the vertical part 7 of the support block 6 to abut against the push rod 92 again, so that the inner support block 5 moves relative to the support block 6, adjusting the position of the sliding part 62.

[0061] Reference Figure 3 The drive assembly 3 includes a drive motor 31 and a lead screw 32. The drive motor 31 is mounted on the frame 1, and the lead screw 32 is rotatably mounted on the frame 1. A guide rail is provided on the frame 1 to limit the movement of the mounting frame 4. The mounting frame 4 slides horizontally on the frame 1 via the guide rail. The lead screw 32 is threadedly engaged with the mounting frame 4, meaning that rotation of the lead screw 32 can move the mounting frame 4. The output end of the drive motor 31 is connected to the lead screw 32. The drive motor 31 adjusts the position of the mounting frame 4 by rotating the lead screw 32. Furthermore, the direction of movement of the mounting frame 4 can be adjusted by controlling the rotation direction of the lead screw 32.

[0062] Reference Figure 12 Through holes are provided on both sides of the support 61 for the inner support block 5 to pass through. The through holes on both sides are set to different sizes. Specifically, the end of the inclined top block 51 closest to the mounting bracket 4 is defined as the rear end, and the other end as the front end. The through hole corresponding to the front end of the inclined top block 51 is called the front through hole, and the through hole corresponding to the rear end is called the rear through hole. The size of the rear through hole is larger than that of the front through hole, so that both the front and rear ends of the inclined top block 51 can move within the corresponding through holes. In addition, the rear end of the inclined top block 51 is set to be larger than the front through hole to prevent the inclined top block 51 from detaching from the support 61, and to prevent the rear end of the inclined top block 51 from entering the adjacent support 61, so as to ensure the overall stability.

[0063] Reference Figure 8 A stop bar 52 is provided on the inner support block 5 at the end away from the mounting bracket 4. The stop bar 52 is located outside the support block 6. The length of the stop bar 52 is greater than the diameter of the through hole. The stop bar 52 further prevents the inner support block 5 from detaching from the support block 6 when it moves in the opposite direction.

[0064] The implementation principle of this invention is as follows: Before processing, the position of the pipe 01 is first corrected. The pipe 01 to be processed is placed stably on the preset forming seat 11, while ensuring that the axis of the pipe 01 is consistent with the forming seat 11. Then, the forming seat 11 moves smoothly along the preset guide rail to the area directly below the forming block 12, preparing the position for subsequent correction and processing steps. Next, the drive motor 31 starts and drives the mounting frame 4 to move smoothly through the lead screw 32. The movement of the mounting frame 4 synchronously drives the correction plate 42 to approach the end of the pipe 01 until the correction plate 42 abuts against the end face of the pipe 01. At the same time, under the action of continuous driving force, the pipe 01 is pushed to gradually move towards the push rod 92, and the end of the pipe 01 away from the correction plate 42 abuts against the push rod 92. Throughout the process, the limiting rod 94 moves synchronously with the mounting frame 4. When the limiting rod 94 moves completely into the limiting sleeve 93, the top rod 92 and the correction plate 42 stop moving. At this time, the pipe 01 is clamped between the top rod 92 and the correction plate 42, completing the correction of the pipe 01 and ensuring that the pipe 01 is directly below the forming block 12, thus completing the positioning of the pipe 01.

[0065] After the calibration process is completed, the drive motor 31 continues to drive the mounting frame 4 to move forward, thereby causing the support block 6 mounted on the mounting frame 4 to move synchronously and slowly insert into the pipe 01. When the support block 6 on the side away from the mounting frame 4 moves to the other end of the pipe 01 and abuts against the push rod 92, the push rod 92 abuts against the vertical part 7 of the support block 6, and the support block 6 stops axial movement. Under the action of the drive motor 31, the mounting frame 4 continues to advance forward, causing the inner support block 5 to generate axial displacement relative to the support part 61. This displacement is converted into radial thrust on the sliding part 62 by the inclined push block 51 on the inner support block 5, pushing the sliding part 62 to expand outward along the mounting groove 611 to the inner wall of the pipe 01, until the sliding part 62 abuts tightly against the inner wall of the pipe 01, forming multi-point uniform support, completing the rigid support of the pipe 01 from inside the pipe 01, effectively enhancing the structural stability of the pipe 01 during the processing.

[0066] After the pipe 01 receives sufficient internal support, the forming block 12 moves vertically downward under the drive of the power mechanism, gradually approaching the pipe 01 and applying a preset pressure to precisely press and shape the pipe 01. During this process, the inner support block 5 rotates synchronously with the shaping action of the pipe 01, driving the support block 6 to smoothly rotate from the initial horizontal state to a support position that fits against the inner wall of the pipe 01, further strengthening the support effect on the processing area of ​​the pipe 01 and ensuring that the pipe 01 is subjected to balanced force during the shaping process. After the pipe 01 is processed, the drive motor 31 rotates in reverse, driving the mounting frame 4 to move back along the original path. The reverse movement of the mounting frame 4 drives the inner support block 5 to move in the opposite direction relative to the support part 61, while retracting the outwardly expanding sliding part 62 back into the mounting groove 611. Since the outer diameter of the support part 61 is preset to be smaller than the inner diameter of the pipe 01, the inner support block 5 and the support block 6 can be easily pulled out from inside the pipe 01 after the sliding part 62 is fully retracted. After being pulled out, the vertical parts 7 of the support blocks 6 abut against each other again under the action of the elastic element 83, so that the multiple support blocks 6 automatically return to the horizontal state, quickly preparing for the next auxiliary processing procedure of the pipeline 01.

[0067] This invention provides a support structure with support blocks 6 extending deep into the interior of the pipe 01, forming a comprehensive, multi-point rigid support for the sidewall of the pipe 01 during the shaping and processing stage. This not only ensures that the pipe 01 is subjected to uniform stress throughout the pressure process and effectively avoids uneven deformation caused by excessive local stress, but also significantly reduces the occurrence of processing defects such as wrinkles and dents on the surface of the pipe 01, thereby improving the processing accuracy of the pipe 01.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pressure shaping device for pipe processing, comprising a forming seat and a forming block mounted on a frame, characterized in that, Also includes: Support assembly and drive assembly; the support assembly includes: a mounting bracket horizontally slidably mounted on a frame, multiple inner support blocks mounted on the mounting bracket, and multiple support blocks respectively sleeved on the outside of each inner support block. The side of each support block includes a vertical portion and an inclined portion above the vertical portion. The inclined portion is inclined in the direction towards the inside of the support block. Adjacent inner support blocks are rotatably fitted. The axis of rotation of the inner support block is set horizontally and located between the inclined portion and the vertical portion. The drive assembly is connected to the mounting bracket. When the vertical portions on the support blocks abut against each other, they are in a horizontal position, and the multiple support blocks are arranged in the same horizontal direction. When the inclined portions abut against each other, they are in a support position, and the multiple support blocks are arranged in an arc shape. The drive assembly drives the horizontal support blocks into the pipe. As the pipe deforms, the support blocks rotate to the support position, while supporting the inner wall of the pipe. Through holes are provided on both sides of the support for the inner support block to pass through, and the through holes on both sides are set to different sizes. The end of the inclined top block near the mounting bracket is defined as the rear end and the other end as the front end. The through hole corresponding to the front end of the inclined top block is the front through hole, and the through hole corresponding to the rear end is the rear through hole. The rear end of the inclined top block is set to be larger than the front through hole to avoid the phenomenon of the inclined top block detaching from the support. The support block includes a support part and a sliding part. The support part has an installation groove, and the sliding part is slidably assembled in the installation groove. The support part is slidably sleeved on the outside of the inner support block. The side of the inner support block has an inclined top block that cooperates with the sliding part. The inclined surface of the inclined top block abuts against the sliding part. An elastic component is provided between the mounting frame and the support block to connect the two. A pushing component is provided on the forming seat. The outer diameter of the support part is smaller than the inner diameter of the pipe. When the support block is in a horizontal position, it stops moving after passing through the pipe and cooperating with the pushing component. The mounting frame drives the inner support block to move relative to the support block and compress the elastic component. At the same time, the inclined top block pushes the sliding part to move to the outside of the installation groove and abut against the inner wall of the pipe. The push assembly includes: a connecting part connected to the forming seat, a push rod installed on the connecting part, and the vertical part of the support block abutting against the push rod after passing through the pipe; A sliding rod is mounted on the mounting bracket. A correction plate is mounted on the end of the sliding rod near the pipe. An elastic element is fitted on the outside of the sliding rod. When the mounting bracket moves closer to the pipe, the sliding rod causes the correction plate to come into contact with the pipe. The correction plate then causes the pipe to come into contact with the top rod to correct the position of the pipe.

2. The pressure shaping equipment for pipe processing according to claim 1, characterized in that, The elastic component includes: a sleeve rod connected to the inner support block, an inner rod connected to the sleeve rod, and an elastic element 1 sleeved on the outside of the sleeve rod and the inner rod. The inner rod is connected to the mounting frame, and the elastic element 1 is connected to the support block and the mounting frame respectively.

3. The pressure shaping equipment for pipe processing according to claim 1, characterized in that, Multiple sliding parts and mounting slots are arranged around the center of the support block. Multiple sliding parts are arranged one-to-one with multiple mounting slots. Multiple inclined top blocks are also arranged with multiple sliding parts. A connecting block is provided on the inclined top block. A connecting slot is provided on the side of the sliding part near the inclined top block. The connecting block is slidably assembled in the connecting slot so that the sliding part and the inclined top block always remain in contact.

4. The pressure shaping equipment for pipe processing according to claim 1, characterized in that, The connecting part includes: The support plate, the support rod, and the elastic element three are connected to the forming seat. The support rod passes through the support plate and is slidably assembled on the support plate. The top rod is installed on the support rod. The elastic element three is connected to the support plate and the top rod respectively.

5. The pressure shaping equipment for pipe processing according to claim 4, characterized in that, A limiting sleeve is provided on the receiving plate. A limiting rod connected to the top rod is slidably installed inside the limiting sleeve. After the pipeline is aligned, the limiting rod moves into the limiting sleeve, and the end of the top rod abuts against the limiting sleeve.

6. The pressure shaping equipment for pipe processing according to claim 2, characterized in that, The inner rod and the sleeve rod rotate together. A torsion spring is provided at the connection between the sleeve rod and the inner rod, which is connected to both of them. The torsion spring is used to drive the sleeve rod to rotate to a horizontal state.

7. The pressure shaping equipment for pipe processing according to claim 1, characterized in that, The drive assembly includes: a drive motor mounted on the frame, a lead screw rotatably mounted on the frame, the output end of the drive motor being connected to the lead screw to drive the lead screw to rotate, a guide rail on the frame for limiting the mounting bracket, the mounting bracket sliding horizontally on the frame via the guide rail, and the mounting bracket being threadedly engaged with the lead screw.

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