Manufacturing process and device for lined winding pipe

Abstract

The invention relates to the technical field of winding pipe machining equipment, in particular to a manufacturing process and device for a lined winding pipe. According to the technical scheme, the device comprises a pipe extruder and a cooling device, an extrusion opening is formed in the end of the pipe extruder, an extrusion pipe for slow extrusion is further arranged in the extrusion opening, and the device further comprises an L-shaped support which is fixedly connected to the outer wall of the end of the pipe extruder and corresponds to the extrusion opening. Through cooperation of the pipe extruder, the L-shaped support, the clamping mechanism, the sliding mechanism and other components, when the lining winding pipe manufacturing device is used, fixing is conducted through the L-shaped support, an air cylinder drives an arc-shaped clamping plate and an arc-shaped supporting plate to clamp an extrusion pipe, and a motor drives a screw rod to enable a sliding clamping plate to drive the extrusion pipe to move and penetrate through a penetrating hole; and the supporting rod and the circular clamping plate are aligned. The problem that a high-temperature pipe needs to be manually guided to penetrate through a cooling machine positioning hole in traditional equipment, and scalding is prone to being caused is solved, automatic guiding is achieved, and safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of spiral wound tube processing equipment, and in particular to a manufacturing process and apparatus for spiral wound tubes with inner lining. Background Technology

[0002] Lined spiral wound pipe is a special type of spiral wound pipe, belonging to the "composite structure branch" within the spiral wound pipe family. The manufacturing process of lined spiral wound pipe requires the initial fabrication of the inner lining layer, necessitating the use of a pipe extruder. The extruder heats and melts PE and PP raw materials, extrudes a continuous inner lining pipe through a die, forming the foundation of the pipe's inner layer. This inner lining pipe must be smooth and corrosion-resistant, directly contacting the transported medium. The extruder precisely controls temperature and pressure parameters to ensure uniform lining thickness and stable performance, providing a qualified inner layer for subsequent spiral wound composite molding. It is a key piece of equipment for realizing the "lining + spiral wound" composite structure.

[0003] Traditional extruders produce tubes that are molten at high temperatures, making them soft and with extremely low rigidity. These tubes are prone to sagging and shifting under gravity. The positioning holes in the cooling machine are only 1-2 mm larger than the outer diameter of the tube, requiring precise alignment. Without manual guidance, the tube cannot enter the positioning holes on its own, leading to cooling and shaping failure, or even blockage of the die head. Therefore, the tube must be manually passed through the positioning holes to ensure its smooth entry into the cooling system.

[0004] However, this operation poses significant safety risks. The temperature of freshly extruded tubing far exceeds the tolerance limit of human skin. Once in contact with skin, the high temperature will rapidly damage the proteins on the skin's surface, causing cell degeneration and necrosis. In addition, plastic has poor thermal conductivity, and heat accumulates at the contact point, making it difficult to dissipate. This can cause burns in a short time. Furthermore, the molten material can easily adhere to the skin, continuing to transfer heat and further aggravating the injury. Summary of the Invention

[0005] The purpose of this invention is to address the problems of pipes extruded by traditional extruders being prone to sagging when they melt at high temperatures, requiring manual insertion through the positioning holes of a cooling machine, but the pipe temperature exceeds the skin's tolerance limit, the poor thermal conductivity of plastics makes them easy to burn upon contact, and the molten material can also adhere to the skin, aggravating the damage. The invention proposes a manufacturing process and apparatus for a spirally wound pipe with an inner lining.

[0006] On one hand, this application provides a manufacturing apparatus for a lined spiral pipe, including a pipe extruder and a cooling device. The end of the pipe extruder is provided with an extrusion port, and the inside of the extrusion port is also provided with a slowly extruded extruded pipe. The apparatus also includes: an L-shaped bracket fixedly connected to the outer wall of the end of the pipe extruder corresponding to the extrusion port, and a clamping mechanism for fixing the end of the extruded pipe on the L-shaped bracket; and a sliding mechanism installed on the L-shaped bracket to drive the fixed extruded pipe to move toward the cooling device. The sliding mechanism is also linked to the clamping mechanism.

[0007] Optionally, the clamping mechanism includes a sliding plate, the top of which is fixedly connected to an arc-shaped support plate for supporting the extrusion tube. A rectangular ring is also fitted on the arc-shaped support plate, the top of which is fixedly connected to an arc-shaped clamping plate. A cylinder is fixedly connected to the outer wall of the sliding plate, and the piston rod end of the cylinder is fixedly connected to the rectangular ring.

[0008] Optionally, the sliding mechanism includes a motor fixedly connected to an L-shaped bracket, the output shaft of the motor being fixedly connected to a spiral rod that spirally passes through the bottom end of the sliding plate, and a support plate being fixedly connected to one end of the L-shaped bracket, with the end of the spiral rod away from the motor being rotatably connected to the support plate.

[0009] Optionally, the sliding mechanism further includes a support block fixedly connected to the outer wall of the sliding plate, and the upper surface of the support block is provided with a first button that opens the cylinder when pressed.

[0010] Optionally, the bottom outer wall of the sliding plate is also fixedly connected to multiple support rods. The end of the support rod away from the sliding plate is fixedly connected to a circular plate. The circular plate is provided with an indicator light and a second button that turns on the indicator light when pressed.

[0011] Optionally, a pair of protrusions are fixedly connected to the outer wall of the L-shaped bracket at the end away from the support plate, and each of the protrusions is provided with a fixing bolt for spiral connection with the pipe extruder.

[0012] Optionally, the cooling device is provided with perforations for the arc-shaped support plate, extrusion tube and arc-shaped clamp to pass through.

[0013] Optionally, the L-shaped bracket is also provided with a limiting groove for the sliding plate to slide.

[0014] On the other hand, this application provides a manufacturing process for an apparatus for manufacturing a lined spiral tube, applicable to an apparatus for manufacturing a lined spiral tube as described above, comprising the following steps: S1. To provide a stable mounting base for subsequent clamping and moving of the extruded tube, when fixing the L-shaped bracket, simply use the protrusion and fixing bolts to fix the L-shaped bracket to the outer wall of the tube extruder end. S2. When fixing the high-temperature extruded tube to prevent it from drooping and shifting due to gravity, and to provide a basis for subsequent movement and positioning, start the cylinder. Its piston rod pushes the rectangular ring down, so that the arc-shaped clamping plate and the arc-shaped support plate cooperate to clamp the extruded tube. S3. When the clamping action is linked to the motor to automatically move the extrusion tube toward the cooling equipment and reduce manual intervention, the rectangular ring moves to abut the first button on the support block, and the output shaft of the automatic motor drives the screw rod to rotate, driving the sliding plate to slide in the limit groove. S4. Next, replacing the traditional manual tube insertion, the extruded tube is precisely guided to the positioning hole of the cooling system to avoid the risk of burns. Simply move the sliding plate to move the clamped extruded tube so that it passes through the hole of the cooling equipment. S5. Finally, by using mechanical limiters and light indicators to ensure precise alignment between the extrusion tube and the positioning hole of the cooling system, and to guarantee the reliability of subsequent processes, the support rod and the circular clamping plate drive the second button to press against the support plate, and the indicator light illuminates to confirm that the extrusion tube is accurately aligned.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes the cooperation of components such as a pipe extruder, an L-shaped bracket, a clamping mechanism, and a sliding mechanism. When using a lined spiral pipe manufacturing device, the L-shaped bracket provides fixation, while a cylinder drives an arc-shaped clamping plate and an arc-shaped support plate to hold the extruded pipe. A motor drives a screw rod, causing a sliding clamping plate to move the extruded pipe through the perforation hole. A support rod and a circular clamping plate confirm alignment. This invention solves the problem of traditional equipment requiring manual guidance of high-temperature pipes through the cooling machine's positioning holes, which could easily cause burns, achieving automatic guidance and ensuring safety. Attached Figure Description

[0016] Figure 1 A schematic diagram of the manufacturing process and apparatus for a liner-lined spiral tube according to the present invention is provided. Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 A partial structural diagram.

[0017] Reference numerals: 1. Pipe extruder; 101. Extrusion port; 102. Extrusion tube; 2. L-shaped bracket; 21. Limiting groove; 22. Support plate; 23. Protrusion; 24. Fixing bolt; 25. Motor; 26. Helical rod; 3. Sliding plate; 31. Arc-shaped support plate; 32. Cylinder; 33. Rectangular ring; 34. Arc-shaped clamp; 35. Support block; 36. First button; 37. Support rod; 371. Circular plate; 38. Second button; 39. Indicator light; 4. Cooling equipment; 41. Perforation. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Example

[0023] like Figures 1 to 3 As shown, the present invention proposes an apparatus for manufacturing a lined spiral tube, comprising a tube extruder 1 and a cooling device 4. The cooling device 4 is used to cool and shape the extruded tube 102, and has a perforation 41. The cooling device 4 has a perforation 41 for the passage of an arc-shaped support plate 31, the extruded tube 102, and an arc-shaped clamping plate 34. After the extruded tube 102 is automatically passed through the perforation 41, it can be clamped with a tool and connected to the cooling device 4, avoiding skin contact and burns during operation. The perforation 41, located on the cooling device 4, allows the arc-shaped support plate 31, the extruded tube 102, and the arc-shaped clamping plate 34 to pass through, serving as the channel for the extruded tube 102 to enter the cooling device 4. The end of the tube extruder 1 is provided with an extrusion port 101 for extruding the molten extruded tube 102. The inside of the extrusion port 101 is also provided with a slowly extruded extrusion tube 102. The extrusion tube 102 is a high-temperature molten inner liner tube extruded by the pipe extruder 1 and needs to enter the cooling equipment 4 for shaping. An L-shaped bracket 2 corresponding to the extrusion port 101 is fixedly connected to the outer wall of the end of the pipe extruder 1. The L-shaped bracket 2 is also provided with a limiting groove 21 for the sliding plate 3 to slide.

[0024] Among them, such as Figures 2 to 3As shown, the L-shaped bracket 2 is equipped with a clamping mechanism for fixing the end of the extrusion tube 102. The clamping mechanism includes a sliding plate 3, and an arc-shaped support plate 31 supporting the extrusion tube 102 is fixedly connected to the top of the sliding plate 3. The arc-shaped support plate 31 is fixed to the top of the sliding plate 3, supports the extrusion tube 102, and cooperates with the arc-shaped clamping plate 34 to clamp the extrusion tube 102. A rectangular ring 33 is also fitted on the arc-shaped support plate 31, and the top of the rectangular ring 33 is fixedly connected to the arc-shaped clamping plate 34. Both the arc-shaped support plate 31 and the arc-shaped clamping plate 34 are made of polytetrafluoroethylene, which has extremely low surface energy and hardly adheres to any molten plastic. It is chemically inert, thus avoiding displacement caused by material adhesion. The arc-shaped clamping plate 34 cooperates with the arc-shaped support plate 31 to clamp the extrusion tube 102 and prevent it from sagging and shifting due to gravity. A cylinder 32 is fixedly connected to the outer wall of the sliding clamping plate 3. The cylinder 32 is fixed to the outer wall of the sliding clamping plate 3, and the end of the piston rod is fixedly connected to the rectangular ring 33. The cylinder 32 pushes the rectangular ring 33 to move up and down, thereby clamping or releasing the extrusion tube 102 by the arc-shaped clamping plate 34 and the arc-shaped support plate 31. The end of the piston rod of the cylinder 32 is fixedly connected to the rectangular ring 33.

[0025] In addition, such as Figure 3 As shown, a sliding mechanism is installed on the L-shaped bracket 2 to move the fixed extrusion tube 102 toward the cooling device 4. The sliding mechanism is also linked to the clamping mechanism. The sliding mechanism includes a motor 25 fixedly connected to the L-shaped bracket 2. The output shaft of the motor 25 drives the spiral rod 26 to rotate, providing power for the movement of the sliding plate 3. The output shaft of the motor 25 is fixedly connected to the spiral rod 26, which spirals through the bottom end of the sliding plate 3. A support plate 22 is also fixedly connected to one end of the L-shaped bracket 2. The support plate 22 is used to rotatably connect the other end of the spiral rod 26. The end of the spiral rod 26 away from the motor 25 is rotatably connected to the support plate 22.

[0026] It is worth noting that, such as Figures 2 to 3 As shown, the sliding mechanism also includes a support block 35 fixedly connected to the outer wall of the sliding plate 3. The support block 35 is fixed to the outer wall of the sliding plate 3, and its upper surface is provided with a first button 36 for triggering the action of the cylinder 32. The upper surface of the support block 35 is provided with a first button 36 that opens the cylinder 32 when pressed. The first button 36 is mounted on the upper surface of the support block 35 and is a normally open mechanical button. When the rectangular ring 33 moves down, pressing the button connects the circuit and starts the cylinder 32, realizing the linkage between the clamping mechanism and the sliding mechanism. The first button 36 is located on the upper surface of the support block 35 and opens the cylinder 32 when pressed by the rectangular ring 33.

[0027] Furthermore, such as Figures 2 to 3As shown, multiple support rods 37 are fixedly connected to the bottom outer wall of the sliding plate 3. A circular plate 371 is fixedly connected to the end of the support rod 37 away from the sliding plate 3. The circular plate 371 is fixed to the end of the support rod 37 and has an indicator light 39 and a second button 38 on it to confirm the alignment of the extrusion tube 102. The circular plate 371 has an indicator light 39, which is activated by the second button 38 to indicate whether the extrusion tube 102 is accurately aligned. The circular plate 371 also has a second button 38 that activates the indicator light 39 when pressed. The second button 38 is also a mechanical press button on the circular plate 371. When the sliding plate 3 moves the extrusion tube 102 to the target position, the second button 38 presses against the support plate 22 and is triggered, activating the indicator light 39 to confirm the alignment of the extrusion tube 102. The second button 38 is located on the circular plate 371. When pressed, it turns on the indicator light 39 to confirm that the extrusion tube 102 is accurately aligned.

[0028] Furthermore, such as Figure 3 As shown, a pair of protrusions 23 are fixedly connected to the outer wall of the L-shaped bracket 2 away from the support plate 22. Each protrusion 23 is provided with a fixing bolt 24 that is spirally connected to the pipe extruder 1. The fixing bolt 24 passes through the protrusion 23 and is spirally connected to the pipe extruder 1 to fix the L-shaped bracket 2.

[0029] This application provides a manufacturing process for an apparatus for manufacturing a spiral wound tube with an inner lining, such as... Figures 1 to 3 As shown, it includes the following steps: S1. To provide a stable mounting base for the subsequent clamping and moving of the extrusion tube 102, when fixing the L-shaped bracket 2, simply use the protrusion 23 and fixing bolt 24 to fix the L-shaped bracket 2 to the outer wall of the end of the tube extruder 1. S2. When fixing the newly extruded high-temperature extrusion tube 102 to prevent it from drooping and shifting due to gravity, and to provide a prerequisite for subsequent movement and positioning, start the cylinder 32. Its piston rod pushes the rectangular ring 33 down, so that the arc-shaped clamping plate 34 and the arc-shaped support plate 31 cooperate to clamp the extrusion tube 102. S3. When the clamping action linkage motor 25 automatically drives the extrusion tube 102 to move towards the cooling device 4, reducing manual intervention, the rectangular ring 33 moves to abut against the first button 36 on the support block 35, and the output shaft of the automatic motor 25 drives the screw rod 26 to rotate, driving the sliding plate 3 to slide in the limiting groove 21. S4. Next, instead of the traditional manual tube insertion, the extrusion tube 102 is precisely guided to the positioning hole of the cooling system to avoid the risk of burns. Simply move the sliding plate 3 to hold the extrusion tube 102 so that it passes through the through hole 41 of the cooling device 4. S5. Finally, by using mechanical limit and light indication to ensure that the extrusion tube 102 is precisely aligned with the positioning hole of the cooling system and to ensure the reliability of subsequent processes, the support rod 37 and the circular clamping plate 371 drive the second button 38 to press against the support plate 22, and the indicator light 39 lights up to confirm that the extrusion tube 102 is accurately aligned.

[0030] In this embodiment, when using the pipe-wound tube manufacturing device with an inner lining, the pipe extruder 1 slowly extrudes the extruded tube 102 through the extrusion port 101. The L-shaped bracket 2 is fixed to the outer wall of the end of the pipe extruder 1 by the protrusion 23 and the fixing bolt 24. Then, the cylinder 32 is started, and its piston rod pushes the rectangular ring 33 downward, causing the arc-shaped clamping plate 34 and the arc-shaped support plate 31 to cooperate in clamping the extruded tube 102. As the rectangular ring 33 moves towards the support block 35, it will abut against the first button 36 on it, thereby starting the motor 25. Its output shaft drives the screw rod 26 to rotate. Since the screw rod 26 is helically connected to the sliding clamping plate 3, the sliding clamping plate 3 slides in the limiting groove 21 of the L-shaped bracket 2. Then, the sliding clamping plate 3 drives the clamped extruded tube 102 to move towards the cooling device 4 and pass through the through hole 41 of the cooling device 4. Finally, when the support rod 37 and the circular clamping plate 371 drive the second button 38 on it to abut against the support plate 22, the indicator light 39 lights up. Finally, the extrusion tube 102 can be confirmed to be accurately aligned, and the extrusion tube 102 can be automatically guided into the cooling system to avoid the risk of burns from manual operation.

[0031] The preferred embodiments of the present invention described above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An apparatus for manufacturing a lined spiral pipe, comprising a pipe extruder (1) and a cooling device (4), wherein the end of the pipe extruder (1) is provided with an extrusion port (101), and the interior of the extrusion port (101) is further provided with a slowly extruded extrusion tube (102), characterized in that, Also includes: An L-shaped bracket (2) is fixedly connected to the outer wall of the end of the tube extruder (1) and the corresponding extrusion port (101). The L-shaped bracket (2) is provided with a clamping mechanism for fixing the end of the extrusion tube (102). The sliding mechanism, installed on the L-shaped bracket (2), drives the fixed extrusion tube (102) to move toward the cooling device (4). The sliding mechanism is also linked to the clamping mechanism.

2. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 1, characterized in that, The clamping mechanism includes a sliding plate (3), the top of which is fixedly connected to an arc-shaped support plate (31) supporting the extrusion tube (102). A rectangular ring (33) is also fitted on the arc-shaped support plate (31), the top of which is fixedly connected to an arc-shaped clamping plate (34). A cylinder (32) is fixedly connected to the outer wall of the sliding plate (3), and the piston rod end of the cylinder (32) is fixedly connected to the rectangular ring (33).

3. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The sliding mechanism includes a motor (25) fixedly connected to an L-shaped bracket (2). The output shaft of the motor (25) is fixedly connected to a spiral rod (26) that spirally passes through the bottom end of the sliding plate (3). One end of the L-shaped bracket (2) is also fixedly connected to a support plate (22). The end of the spiral rod (26) away from the motor (25) is rotatably connected to the support plate (22).

4. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The sliding mechanism also includes a support block (35) fixedly connected to the outer wall of the sliding plate (3), and the upper surface of the support block (35) is provided with a first button (36) that opens the cylinder (32) after being pressed.

5. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The bottom outer wall of the sliding plate (3) is also fixedly connected with a number of support rods (37). The end of the support rod (37) away from the sliding plate (3) is fixedly connected to a circular plate (371). The circular plate (371) is provided with an indicator light (39). The circular plate (371) is also provided with a second button (38) that turns on the indicator light (39) after pressing.

6. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The L-shaped bracket (2) has a pair of protrusions (23) fixedly connected to the outer wall of the end away from the support plate (22). Each of the protrusions (23) is provided with a fixing bolt (24) that is spirally connected to the pipe extruder (1).

7. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The cooling device (4) has a perforation (41) through which the arc-shaped support plate (31), the extrusion tube (102) and the arc-shaped clamp plate (34) pass.

8. The apparatus for manufacturing a spiral wound tube with an inner lining according to claim 2, characterized in that, The L-shaped bracket (2) is also provided with a limiting groove (21) for the sliding plate (3) to slide.

9. A manufacturing process for an apparatus for manufacturing a spiral wound tube with an inner lining, applicable to the apparatus for manufacturing a spiral wound tube with an inner lining as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. To provide a stable mounting base for the subsequent clamping and moving of the extrusion tube (102), when fixing the L-shaped bracket (2), simply fix the L-shaped bracket (2) to the outer wall of the end of the tube extruder (1) using the protrusion (23) and fixing bolt (24); S2. When fixing the newly extruded high-temperature extrusion tube (102) to prevent it from drooping due to gravity and to provide a basis for subsequent movement and positioning, start the cylinder (32), and its piston rod pushes the rectangular ring (33) down so that the arc-shaped clamping plate (34) and the arc-shaped support plate (31) cooperate to clamp the extrusion tube (102). S3. When the clamping action linkage motor (25) automatically drives the extrusion tube (102) to move towards the cooling device (4) to reduce manual intervention, the rectangular ring (33) moves to abut the first button (36) on the support block (35), and the output shaft of the automatic motor (25) drives the screw rod (26) to rotate, driving the sliding plate (3) to slide in the limiting groove (21); S4. Next, instead of the traditional manual tube insertion, the extrusion tube (102) is precisely guided to the positioning hole of the cooling system to avoid the risk of burns. Simply move the sliding plate (3) to hold the extrusion tube (102) so that it passes through the hole (41) of the cooling equipment (4). S5. Finally, by using mechanical limit and light indication to ensure that the extrusion tube (102) is accurately aligned with the positioning hole of the cooling system and to ensure the reliability of subsequent processes, the support rod (37) and the circular clamping plate (371) drive the second button (38) to press against the support plate (22), and the indicator light (39) lights up to confirm that the extrusion tube (102) is accurately aligned.

Images