Device for preparing MPP pipe bending part through extrusion forming

Abstract

The invention discloses a device for preparing an MPP pipe bending part through extrusion forming, and relates to the technical field of pipe machining, the device comprises a machining table, sliding seats are symmetrically and slidably connected to the top of the machining table, a bearing table is rotatably connected to the tops of the sliding seats, a bearing seat is slidably connected to the top of the bearing table, and an embedding head is fixedly connected to the interior of the bearing seat; according to the device, the air expansion sealing rings on the outer side of the embedded head are tightly attached to the inner wall of the pipe, effective sealing of the two ends of the pipe is achieved, meanwhile, when the pipe is heated and softened by hot air, stable air pressure is formed in the pipe, and the pipe is heated and softened by the hot air; the air pressure not only is beneficial to keeping the roundness of the pipe and preventing local depression in the bending process, but also ensures that the pipe can be uniformly stressed in the bending process, and the deformation risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, and in particular to a device for preparing MPP pipe bent parts by extrusion molding. Background Art

[0002] During the laying process of MPP pipes, it is often necessary to bend the pipes in specific areas to bypass obstacles or adapt to terrain changes. At this time, the two straight pipes need to be connected by precise bending parts to ensure the continuity and stability of the entire pipeline. However, the existing MPP pipe production process mainly relies on injection extrusion molding technology. Although this method is efficient, the pipes produced are mostly straight and it is difficult to meet the needs of direct bending.

[0003] In order to meet the needs of bending pipes, the traditional method is to manually bend the pipes before they are completely cooled and formed to form the required curved connectors. However, it is difficult to accurately control the curvature of the pipes during manual bending, resulting in the curvature of the finished bent parts being unsmooth and unable to meet the precise requirements of engineering design.

[0004] Secondly, during the manual bending process, due to uneven force control or improper operation, the pipe is prone to quality problems such as deformation and dents, which affect the strength and sealing of the pipe. Manual bending requires a lot of time and manpower, and the processing speed is limited, resulting in low overall production efficiency and increased production costs. Summary of the invention

[0005] The purpose of the present invention is to provide a device for preparing MPP pipe bent parts by extrusion molding, and the technical problems to be solved are as follows: how to achieve accurate bending molding of MPP pipes, and how to improve the processing efficiency and finished product quality of MPP pipe bent parts.

[0006] In order to solve the problems existing in the prior art, the technical solution adopted by the present invention is as follows: A device for preparing MPP pipe bent parts by extrusion molding, comprising a processing table, a sliding seat is symmetrically slidably connected to the top of the processing table, a bearing platform is rotatably connected to the top of the sliding seat, a bearing seat is slidably connected to the top of the bearing platform, an embedding head is fixedly connected inside the bearing seat, an air duct is provided inside the embedding head, an air sealing ring is symmetrically embedded on the outside of the embedding head, the input end of the air sealing ring is connected to the air duct, a rotating block is symmetrically rotatably connected inside the processing table, a positioning rod is fixedly connected to one corner of the bottom of the bearing platform, and one end of the positioning rod is slidably inserted into the corresponding rotating block.

[0007] Preferably, a longitudinal moving assembly is symmetrically installed on the top of the processing table, and the moving end of the longitudinal moving assembly is fixedly connected to the corresponding sliding seat. A transverse moving assembly is installed on the top of the bearing platform, and the moving end of the transverse moving assembly is fixedly connected to the corresponding bearing seat.

[0008] Preferably, a positioning sleeve is fixedly connected to the outside of the embedding head. The fixed connection of the positioning sleeve not only enhances the stability of the embedding head, but also ensures its accuracy during the insertion of the pipe, which helps to reduce the processing error caused by the position deviation of the embedding head.

[0009] Preferably, a ventilation pipe is fixedly connected to one end of the embedded head, and the ventilation pipe is connected to the air duct. The ventilation pipe serves as a channel for hot air to enter the interior of the pipe, ensuring that the hot air can be smoothly and efficiently transmitted to the interior of the pipe, thereby improving heating efficiency and shortening the time required for the pipe to soften.

[0010] Preferably, a forming seat is fixedly connected to the top of the processing table, and a guide cavity is opened on the outside of the forming seat. The guide cavity provides a precise guide path and support for the bending of the pipe. In the process of the pipe approaching the forming seat and bending, the guide cavity ensures that the pipe can be bent according to a predetermined shape and angle, thereby improving the consistency and aesthetics of the finished product.

[0011] Preferably, a protective plate is fixedly connected around the top edge of the processing table, which effectively prevents the operator from being harmed by splashes or hot air that may be generated during the processing. At the same time, it also reduces the potential damage of the processing environment to the equipment itself, and improves the service life and safety of the equipment.

[0012] Preferably, support feet are equidistantly provided at the bottom of the support platform, and the bottom ends of the support feet are rotatably connected to ball blocks. The ball block design at the bottom ends of the support feet makes the support platform more stable and smooth during the movement and rotation process. This rolling connection reduces friction resistance, reduces energy consumption and noise, and at the same time improves the operating efficiency and stability of the equipment.

[0013] Preferably, the opposite ends of the embedding head are provided with round chamfers, and the round chamfer design effectively avoids the risk of the embedding head scratching the inner wall of the pipe during the insertion process of the pipe, which not only protects the integrity of the pipe, but also improves the insertion smoothness and processing efficiency of the embedding head.

[0014] Compared with the related art, the present invention has the following beneficial effects: The present invention achieves effective sealing at both ends of the pipe by tightly fitting the air-expanding sealing ring on the outside of the embedded head with the inner wall of the pipe. During the process of passing hot air, the air-expanding sealing ring expands due to the heat, which further enhances the sealing effect and effectively prevents hot air leakage. At the same time, while the hot air heats the pipe to soften it, it also forms a stable air pressure inside the pipe. This air pressure not only helps to maintain the roundness of the pipe and prevent local depression during bending, but also ensures that the pipe can be evenly stressed when bending, reducing the risk of deformation.

[0015] The device utilizes the linkage mechanism of the sliding seat and the bearing platform to achieve precise bending of the pipe during movement. The embedding head drives the pipe to approach the forming seat and guides the bending of the pipe through its rotation function, ensuring that the pipe can fit into the guide cavity on the outside of the forming seat and bend into the required shape. This method of guiding the bending of the pipe while approaching the forming seat and rotating not only improves the accuracy and consistency of the bending, but also ensures that the pipe will not have defects such as local depression or deformation during the bending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the processing table of the present invention; Figure 3 It is a schematic diagram of the structure of the carrier platform of the present invention; Figure 4 A cross-sectional view of the embedding head structure of the present invention; Figure 5 It is a schematic diagram of the structure of the pipe after bending of the present invention.

[0017] Figure numerals: 1. Processing table; 2. Sliding seat; 3. Carrying table; 4. Carrying seat; 5. Embedding head; 6. Air duct; 7. Inflatable sealing ring; 8. Rotating block; 9. Positioning rod; 10. Longitudinal moving component; 11. Lateral moving component; 12. Positioning sleeve; 13. Air pipe; 14. Forming seat; 15. Guide cavity; 16. Protective plate; 17. Support foot; 18. Ball block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] The device for preparing MPP pipe bent parts by extrusion molding comprises a processing table 1; like Figures 1 to 5As shown, the top of the processing table 1 is symmetrically slidably connected to a sliding seat 2, the top of the sliding seat 2 is rotatably connected to a bearing platform 3, the top of the bearing platform 3 is slidably connected to a bearing seat 4, the inside of the bearing seat 4 is fixedly connected to an embedding head 5, an air duct 6 is provided inside the embedding head 5, and an air sealing ring 7 is symmetrically embedded on the outside of the embedding head 5, the input end of the air sealing ring 7 is connected to the air duct 6, the inside of the processing table 1 is symmetrically rotatably connected to a rotating block 8, and one corner of the bottom of the bearing platform 3 is fixedly connected to a positioning rod 9, and one end of the positioning rod 9 is slidably inserted into the corresponding rotating block 8.

[0020] The MPP pipe is placed between two bearing platforms 3 on the processing table 1. The two bearing platforms 3 are respectively mounted on the sliding seats 2, and the sliding seats 2 can slide symmetrically on the processing table 1. The movement of the sliding seats 2 drives the bearing platforms 3 to rotate, thereby realizing the extrusion and bending of the pipe; The bearing seats 4 are brought close to each other, and the embedded heads 5 fixed inside the bearing seats 4 are inserted into the two ends of the pipe. The gas expansion sealing ring 7 outside the embedded head 5 is in close contact with the inner wall of the pipe in the initial state, but has not yet fully expanded. Hot air is introduced into the air passage 6 inside the embedded head 5 through the vent pipe 13. The hot air flows in the air passage 6 and enters the pipe through the input end of the gas expansion sealing ring 7. While the hot air heats the pipe, it also causes the gas expansion sealing ring 7 to expand due to the heat, further clinging to and sealing the gap between the two ends of the pipe and the embedded head 5. The hot air heats the pipe, softening it and making it easier to bend. At the same time, the air pressure generated by the hot air inside the pipe helps to maintain the roundness of the pipe and avoid local dents during the subsequent bending process. Hot air is continuously passed into the pipe, which not only provides heating effect, but also maintains a certain air pressure inside the pipe. This air pressure support is particularly important after the pipe softens. It ensures that the pipe can be evenly stressed during the bending process and reduces the risk of deformation. When the pipe is softened to an appropriate degree, it is ready for bending operation. The sliding seat 2 is driven to slide along the top of the processing table 1, thereby driving the bearing table 3 to move. During the movement of the sliding seat 2, since the bottom of the bearing table 3 is connected to the rotating block 8 through the positioning rod 9, and the rotating block 8 is symmetrically rotated inside the processing table 1, the bearing table 3 will rotate while sliding. This combination of rotation and sliding allows the pipe to be bent according to a predetermined path and angle. The bottom of the bearing seat 4 is restricted by the connection of the positioning rod 9. During the movement of the sliding seat 2, the bearing platform 3 is guided to gradually rotate from the horizontal direction to the longitudinal direction. During this process, the embedding head 5 also rotates with each other, thereby driving the pipe to bend to the desired shape. After the pipe is bent to the desired shape, the hot air is stopped and the pipe is allowed to cool naturally or accelerated cooling is performed by an external cooling device. During the cooling process, the pipe gradually hardens and fixes its bent shape to form a bent pipe for connecting pipes.

[0021] like Figures 1 to 5 As shown, a longitudinal moving assembly 10 is symmetrically installed on the top of the processing table 1, and the moving end of the longitudinal moving assembly 10 is fixedly connected to the corresponding sliding seat 2, and a transverse moving assembly 11 is installed on the top of the bearing table 3, and the moving end of the transverse moving assembly 11 is fixedly connected to the corresponding bearing seat 4; The longitudinal moving assembly 10 drives the sliding seat 2 to move horizontally, and the transverse moving assembly 11 drives the bearing seat 4 to move horizontally.

[0022] like Figures 1 to 5 As shown, a positioning sleeve 12 is fixedly connected to the outer side of the embedding head 5.

[0023] like Figures 1 to 5 As shown, one end of the embedding head 5 is fixedly connected with a vent pipe 13, the vent pipe 13 is connected with the vent passage 6, and the hot air source is injected into the vent passage 6 through the vent pipe 13 and enters the interior of the pipe.

[0024] like Figures 1 to 5 As shown, a shaping seat 14 is fixedly connected to the top of the processing table 1, and a guiding cavity 15 is opened outside the shaping seat 14; The pipe approaches the shaping seat 14 during the movement, and the guide cavity 15 outside the shaping seat 14 provides guidance and support for the bending of the pipe.

[0025] like Figures 1 to 5 As shown, a protective plate 16 is fixedly connected around the top edge of the processing table 1. The fixed installation of the protective plate 16 effectively prevents the operator from being hurt by splashes or hot air that may be generated during the processing.

[0026] like Figures 1 to 5 As shown, support feet 17 are equidistantly provided at the bottom of the supporting platform 3, and the bottom ends of the support feet 17 are rotatably connected to ball blocks 18. The bottom ends of the support feet 17 are rollingly connected to the base surface of the processing table 1 through the ball blocks 18, so that the supporting platform 3 is more stable during the movement and rotation process.

[0027] like Figures 1 to 5 As shown, the opposite ends of the embedding head 5 are provided with round chamfers, so that the embedding head 5 can be inserted into the pipe more smoothly and the end of the embedding head 5 can be prevented from scratching the inner wall of the pipe during the insertion process.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing MPP pipe bending parts by extrusion molding, comprising: A processing table (1) is characterized in that the top of the processing table (1) is symmetrically slidably connected to a sliding seat (2), the top of the sliding seat (2) is rotatably connected to a bearing platform (3), the top of the bearing platform (3) is slidably connected to a bearing seat (4), an embedding head (5) is fixedly connected inside the bearing seat (4), an air duct (6) is provided inside the embedding head (5), an air sealing ring (7) is symmetrically embedded on the outside of the embedding head (5), the input end of the air sealing ring (7) is connected to the air duct (6), a rotating block (8) is symmetrically rotatably connected inside the processing table (1), a positioning rod (9) is fixedly connected to one corner of the bottom of the bearing platform (3), and one end of the positioning rod (9) is slidably inserted into the corresponding rotating block (8).

2. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1 is characterized in that: A longitudinal moving assembly (10) is symmetrically mounted on the top of the processing table (1), and a moving end of the longitudinal moving assembly (10) is fixedly connected to a corresponding sliding seat (2). A transverse moving assembly (11) is mounted on the top of each of the bearing platforms (3), and a moving end of the transverse moving assembly (11) is fixedly connected to a corresponding bearing seat (4).

3. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1 is characterized in that: A positioning sleeve (12) is fixedly connected to the outer side of the embedding head (5).

4. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1 is characterized in that: One end of the embedding head (5) is fixedly connected to a ventilation pipe (13), and the ventilation pipe (13) is in communication with the ventilation channel (6).

5. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1, characterized in that: A shaping seat (14) is fixedly connected to the top of the processing table (1), and a guide cavity (15) is provided on the outside of the shaping seat (14).

6. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1, characterized in that: A protective plate (16) is fixedly connected around the top edge of the processing table (1).

7. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1, characterized in that: The bottom of the bearing platform (3) is provided with supporting feet (17) at equal intervals, and the bottom ends of the supporting feet (17) are rotatably connected to ball blocks (18).

8. The device for preparing MPP pipe bent parts by extrusion molding according to claim 1, characterized in that: The opposite ends of the embedding head (5) are both provided with round chamfers.

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