Double-wall corrugated pipe production equipment and method

Abstract

The invention belongs to the technical field of double-wall corrugated pipe production equipment, and particularly relates to double-wall corrugated pipe production equipment which comprises a base and a center injection molding barrel fixedly connected to the surface of the upper end of the base, the periphery of the center injection molding barrel is slidably sleeved with a sleeving plate, and a first injection molding shell and a second injection molding shell are installed on the surface of the sleeving plate; an injection-molded wall body is formed by the central injection-molded cylinder body; a height adjusting assembly is connected between the base and the sleeving plate and is used for lifting the sleeving plate to push the corrugated pipes subjected to injection molding on the periphery of the central injection molding cylinder; according to the invention, through precise cooperation of the threaded rod and the servo motor and a transmission mechanism of the belt pulley, flexible and accurate adjustment of the height of the sleeving plate is realized; due to the characteristic, the universality of the equipment is greatly enhanced, the equipment can quickly adapt to the production requirements of corrugated pipes with different specifications and different heights, a production line does not need to be frequently replaced or adjusted, and therefore a large amount of time and cost are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of double-wall corrugated pipe production equipment, and in particular to a double-wall corrugated pipe production equipment and method. Background Art

[0002] In the field of corrugated pipe manufacturing, as market demand continues to develop in the direction of diversification and customization, traditional corrugated pipe production equipment has gradually exposed a series of problems when dealing with complex and changeable production tasks. These problems not only limit the improvement of production efficiency, but also affect the quality and market competitiveness of corrugated pipe products.

[0003] First, the height adjustment of traditional bellows production equipment mostly relies on manual operation, such as using wrenches, bolts and other tools to adjust the height. This manual adjustment method is not only time-consuming and labor-intensive, but also has limited adjustment accuracy, making it difficult to accurately match the production needs of bellows of different specifications; secondly, manual adjustment lacks an automated control mechanism, resulting in low efficiency in height adjustment during the production process, and is prone to human errors, affecting the consistency and stability of production. In addition, due to the limitations of height adjustment, traditional equipment is often only suitable for the production of bellows of specific specifications. When it is necessary to produce bellows of different heights, it is often necessary to replace or adjust the production line, which increases production costs and time costs.

[0004] In addition, during the injection molding process of the bellows, the friction resistance between the injection molding cylinder and the mold is one of the key factors affecting product quality. Traditional equipment lacks an effective lubrication mechanism, resulting in large friction losses during the injection molding process, which not only affects the surface finish and overall strength of the bellows, but also increases the wear and maintenance costs of the equipment; even if manual lubrication is used, it is difficult to ensure uniform application of the lubricant, resulting in insufficient or excessive lubrication on the surface of the injection molding cylinder, further affecting the product quality and production efficiency of the bellows.

[0005] Finally, the moving parts of the injection molded shell in traditional equipment are often simply designed and lack sufficient guiding and resetting mechanisms, which leads to shaking and collision during movement, affecting the stability and durability of the equipment; due to the unreasonable design of the moving parts, the injection molded shell is often difficult to reset quickly and accurately after demolding, resulting in position deviation during the next injection molding, affecting the molding quality and production efficiency of the corrugated pipe; the frequent damage and replacement of moving parts not only increases the maintenance cost, but also affects the continuity and stability of the production line. For this reason, we provide a double-wall corrugated pipe production equipment and method. Summary of the invention

[0006] In order to solve the above problems, the present invention proposes a double-wall corrugated pipe production device and method to more accurately solve the problems raised in the above background technology.

[0007] The present invention is achieved through the following technical solutions:

[0008] The invention proposes a double-wall corrugated pipe production equipment, comprising a base and a central injection molding cylinder fixedly connected to the upper end surface of the base, the outer periphery of the central injection molding cylinder is slidably sleeved with a sleeve plate, and the surface of the sleeve plate is installed with an injection molding shell 1 and an injection molding shell 2, which are used to form an injection molding wall with the central injection molding cylinder;

[0009] A height adjustment assembly is connected between the base and the sleeve plate, and is used for the sleeve plate to rise and push the bellows that have been molded on the periphery of the central injection molding cylinder;

[0010] A resettable guide sliding component is connected between the sleeve plate, the injection molded shell 1 and the injection molded shell 2, and is used for demoulding the injection molded shell 1 and the injection molded shell 2 after they are unfolded;

[0011] An oiling mechanism is connected between the central injection molding cylinder, the first injection molding shell and the second injection molding shell, and is used to spray lubricating oil onto the periphery of the central injection molding cylinder;

[0012] A sealing structure is connected between the injection molding shell 1 and the injection molding shell 2 to avoid leakage during injection molding.

[0013] Further, the height adjustment assembly includes a threaded rod rotatably connected to the upper end surface of the base through a bearing, and the threaded rod is threadedly connected to the sleeve plate, so that the sleeve plate moves up and down while the threaded rod rotates;

[0014] A servo motor is fixedly mounted on the upper surface of the base, a double-groove belt pulley is fixedly connected to the output end of the servo motor, a single-groove belt pulley is fixedly mounted on the periphery of the threaded rod, and linkage belts are wound around the peripheries of the double-groove belt pulley and the single-groove belt pulley.

[0015] Furthermore, the resettable sliding guide component includes a strip-shaped through groove opened on the surface of the sleeve plate, a transverse fixing rod is fixedly connected between the two end walls of the strip-shaped through groove, a spring is sleeved on the outer periphery of the transverse fixing rod, and a sliding sleeve block is slidably sleeved on the outer periphery of the transverse fixing rod.

[0016] Furthermore, the oiling mechanism includes a hollow ring plate fixedly sleeved on the periphery of the central injection molding cylinder, the lower end surface of the hollow ring plate is connected with a spray head, the upper end surface of the hollow ring plate is fixedly welded with a welding block, the hollow ring plate is fixedly installed with an oil injection cylinder through the welding block, a connecting pipe is connected between the oil injection cylinder and the hollow ring plate, the inner wall piston of the oil injection cylinder is connected with a piston block, one end surface of the piston block is fixedly connected with a push rod, and the upper end surfaces of the injection molding shell 1 and the injection molding shell 2 are both fixedly installed with push plates for pushing the push rod and allowing the lubricating oil inside the oil injection cylinder to be introduced into the interior of the hollow ring plate.

[0017] Furthermore, the sealing structure includes a sealing slot opened on the surface of the end of the injection molded shell 1 opposite to the second injection molded shell and a sealing plug fixedly connected to the surface of the end of the injection molded shell 2 opposite to the first injection molded shell, and the sealing plug is inserted into the inner wall of the sealing slot.

[0018] Furthermore, the end surfaces of the injection molded shell 1 and the injection molded shell 2 are fixedly connected with a pulling handle, and the outer periphery of the oil filling cylinder is equipped with a filling piece for timely adding lubricating oil to the interior of the oil filling cylinder.

[0019] Furthermore, one end of the spring is fixedly connected to the end wall of the strip-shaped through groove, and the other end of the spring is fixedly connected to one end surface of the sliding sleeve block.

[0020] Furthermore, the sliding sleeves are slidably connected at the inner wall of the strip-shaped through groove, the upper end surfaces of two sliding sleeves are fixedly connected to the lower end surface of the injection molding shell one, and the upper end surfaces of the other two sliding sleeves are fixedly connected to the lower end surface of the injection molding shell two.

[0021] Furthermore, a method for using a double-wall corrugated pipe production device is provided, comprising the following steps:

[0022] After the equipment is started, the servo motor starts to work, and the linkage belt between the double-groove belt pulley and the single-groove belt pulley drives the threaded rod to rotate; the rotation of the threaded rod causes the socket plate threadedly connected to it to move up and down, thereby adjusting the distance between the socket plate and the base to meet the production needs of corrugated pipes of different heights; when the socket plate is adjusted to an appropriate position, the injection molding shell 1 and the injection molding shell 2 form an injection molding space with the central injection molding cylinder under the support of the socket plate, and at this time, the injection molding material is injected into the space to form the inner and outer walls of the corrugated pipe;

[0023] During the injection molding process or after the injection molding is completed, the oiling mechanism starts to work, and the lubricating oil in the oiling cylinder enters the hollow ring plate through the connecting pipe, and then is evenly sprayed on the periphery of the central injection cylinder by the spray head; the oiling mechanism is started by the push plate at the upper end of the injection molding shell 1 and the injection molding shell 2 pushing the push rod, thereby driving the piston block to move in the oiling cylinder. In this process, the movement of the piston block squeezes the lubricating oil, so that it enters the hollow ring plate through the connecting pipe;

[0024] After the bellows is injected, the sleeve plate continues to rise under the drive of the servo motor, pushing the bellows to separate from the central injection cylinder; at the same time, the resettable guide slide component starts to work. Since the sliding sleeve is slidably connected in the strip-shaped through groove and is acted upon by the elastic force of the spring, when the injection shell 1 and the injection shell 2 are unfolded, the sliding sleeve will slide along the strip-shaped through groove and drive the injection shell 1 and the injection shell 2 to gradually separate, thereby realizing demoulding;

[0025] After demoulding is completed, the servo motor rotates in the opposite direction, driving the sleeve plate to drop to the initial position to prepare for the next injection molding process; at the same time, the spring in the resettable guide component gradually returns to its original state after the external force is lost, driving the sliding sleeve and the injection molding shell 1 and the injection molding shell 2 to reset to the initial position; the staff can add lubricating oil to the oil filling cylinder in time through the filling piece to ensure the continuous operation of the oiling mechanism.

[0026] Beneficial effects of the present invention:

[0027] The present invention realizes flexible and accurate adjustment of the height of the socket plate through the precise coordination of the threaded rod and the servo motor, as well as the transmission mechanism of the belt pulley; this feature greatly enhances the versatility of the equipment, enabling it to quickly adapt to the production needs of corrugated pipes of different specifications and heights, without the need to frequently replace or adjust the production line, thereby saving a lot of time and cost; in addition, the automated control of height adjustment reduces errors in manual operation, ensures stability and consistency in the production process, and further improves production efficiency; this flexible and efficient height adjustment mechanism enables the equipment to perform well in responding to diversified production tasks, thereby enhancing the company's market competitiveness.

[0028] The present invention cleverly arranges the oiling mechanism, which can evenly and accurately spray lubricating oil on the periphery of the central injection molding cylinder, effectively reducing the friction resistance in the injection molding process, avoiding heat accumulation and material damage caused by friction, and thus significantly improving the surface finish and overall strength of the bellows; more importantly, the start and stop of the oiling mechanism are achieved through the push plate of the injection molding shell. This linkage design not only simplifies the operating process, but also ensures the synchronization and accuracy of the oiling process, avoids excessive or insufficient lubricating oil, and further improves production efficiency and product quality; in addition, automated oiling reduces manual intervention, reduces production costs, and improves the automation level of the overall production line.

[0029] The present invention provides a solid guarantee for the smooth movement of the injection molded shell through the innovative design of the resettable guide sliding component; during the injection molding process, the injection molded shell needs to move frequently between expansion and reset, and traditional sliding components are often damaged due to friction and collision, affecting the stability and service life of the equipment; the resettable guide sliding component can not only effectively absorb the impact energy during the movement and reduce wear by introducing elastic elements such as springs, but also ensure that the injection molded shell is quickly and accurately reset after demolding, so as to be fully prepared for the next injection molding; this design not only significantly improves the durability and stability of the equipment, but also reduces the downtime caused by component damage and improves the overall production efficiency; at the same time, the smooth movement of the guide sliding component reduces the difficulty of operation, so that the operator can control the production process more easily and efficiently, further improving the convenience and comfort of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A three-dimensional schematic diagram of an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a socket plate, an injection-molded housing 1, and an injection-molded housing 2 after being detached in one embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the connection structure of a socket plate, an injection-molded housing 1, and an injection-molded housing 2 according to an embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of the partial connection structure between the central injection molding cylinder and the hollow ring plate in one embodiment of the present invention;

[0034] Figure 5 This is a structural cross-sectional view of an oil filling cylinder according to an embodiment of the present invention;

[0035] Figure 6 An embodiment of the present invention Figure 3 A magnified view of the structure at center.

[0036] In the figure: 1. base; 2. central injection molding cylinder; 3. socket plate; 4. injection molding shell 1; 5. injection molding shell 2; 6. threaded rod; 7. servo motor; 8. double-groove belt pulley; 9. single-groove belt pulley; 10. linkage belt; 11. strip through groove; 12. transverse fixed rod; 13. spring; 14. sliding sleeve block; 15. hollow ring plate; 16. spray head; 17. welding block; 18. oil filling cylinder; 19. connecting pipe; 20. piston block; 21. push rod; 22. push plate; 23. sealing slot; 24. sealing plug plate; 25. pull handle; 26. filling piece. DETAILED DESCRIPTION

[0037] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0038] Example

[0039] like Figure 1-Figure 6As shown, a double-wall corrugated pipe production equipment proposed in one embodiment of the present invention is mainly composed of a base 1 and a central injection molding cylinder 2, wherein the base 1 serves as the supporting structure of the equipment, and the central injection molding cylinder 2 is fixedly connected to the upper end surface of the base 1. The outer periphery of the central injection molding cylinder 2 is slidably sleeved with a sleeve plate 3, and the upper surface of the sleeve plate 3 is installed with an injection molding shell 1 4 and an injection molding shell 2 5, and these two parts of the shell and the central injection molding cylinder 2 together form an injection molding wall. In addition, a height adjustment component is connected between the base 1 and the sleeve plate 3, which is used to adjust the height of the sleeve plate 3, thereby pushing the corrugated pipe after injection molding. A resettable guide sliding component is installed between the sleeve plate 3, the injection molding shell 1 4 and the injection molding shell 2 5 to facilitate demolding. At the same time, the equipment is also provided with an oiling mechanism and a sealing structure, which are respectively used for lubrication and preventing injection molding leakage; through the above structure, the equipment can efficiently and stably produce double-wall corrugated pipes.

[0040] Furthermore, the height adjustment assembly includes a threaded rod 6, a servo motor 7, a double-groove belt pulley 8, a single-groove belt pulley 9 and a linkage belt 10. The threaded rod 6 is rotatably connected to the upper surface of the base 1 through a bearing, and is threadedly connected to the socket plate 3. The servo motor 7 is fixedly mounted on the base 1, and its output end is connected to the double-groove belt pulley 8. A single-groove belt pulley 9 is fixed to the periphery of the threaded rod 6, and the double-groove belt pulley 8 and the single-groove belt pulley 9 are connected by a linkage belt 10. When the servo motor 7 is working, the threaded rod 6 is driven to rotate through the belt transmission, thereby moving the socket plate 3 up and down; the precise adjustment of the height of the socket plate 3 is achieved, meeting the production requirements of corrugated pipes of different heights.

[0041] Furthermore, the resettable guide sliding component is composed of a strip through groove 11, a transverse fixing rod 12, a spring 13 and a sliding sleeve 14. The strip through groove 11 is provided on the surface of the sleeve plate 3, the transverse fixing rod 12 is fixedly connected between the two end walls of the strip through groove 11, the spring 13 is sleeved on the periphery of the transverse fixing rod 12, and the sliding sleeve 14 is slidably sleeved on the transverse fixing rod 12. One end of the spring 13 is connected to the end wall of the strip through groove 11, and the other end is connected to the sliding sleeve 14. The upper end surfaces of the two sliding sleeves 14 are respectively fixedly connected to the lower end surfaces of the injection molding shell 1 4 and the injection molding shell 2 5; when the injection molding shell 1 4 and the injection molding shell 2 5 are unfolded, the sliding sleeve 14 slides along the strip through groove 11 and drives the shell to separate, thereby realizing demoulding; after demoulding, the spring 13 returns to its original state, driving the sliding sleeve 14 and the injection molding shell to reset.

[0042] Furthermore, the oiling mechanism includes a hollow ring plate 15, a spray head 16, a welding block 17, an oiling cylinder 18, a connecting pipe 19, a piston block 20, a push rod 21 and a push plate 22. The hollow ring plate 15 is fixedly sleeved on the periphery of the central injection cylinder 2, and the spray head 16 is connected to the lower end surface of the hollow ring plate 15. The welding block 17 is welded to the upper end surface of the hollow ring plate 15, and the oiling cylinder 18 is fixedly installed by the welding block 17. The connecting pipe 19 is connected to the oiling cylinder 18 and the hollow ring plate 15, the piston block 20 is connected to the inner wall of the oiling cylinder 18, and the push rod 21 is fixedly connected to one end surface of the piston block 20. The push plate 22 is fixedly mounted on the upper end surfaces of the injection molding shell 1 4 and the injection molding shell 2 5, and is used to push the push rod 21; the push plate 22 pushes the push rod 21, driving the piston block 20 to move, squeezing the lubricating oil into the hollow ring plate 15 through the connecting pipe 19, and then evenly sprayed on the periphery of the central injection molding cylinder 2 by the spray head 16 to achieve lubrication.

[0043] Furthermore, the sealing structure includes a sealing slot 23 and a sealing plug plate 24. The sealing slot 23 is opened on the end surface of the injection molding housing 1 4 relative to the injection molding housing 2 5, the sealing plug plate 24 is fixedly connected to the end surface of the injection molding housing 2 5 relative to the injection molding housing 1 4, and the sealing plug plate 24 is inserted at the inner wall of the sealing slot 23; through the cooperation of the sealing slot 23 and the sealing plug plate 24, the sealing of the injection molding space is ensured, and the leakage of the injection molding material is avoided.

[0044] Furthermore, the end surfaces of the injection molded housing 1 4 and the injection molded housing 2 5 are fixedly connected with a pull handle 25 for easy operation. A filling piece 26 is installed on the periphery of the oil filling cylinder 18 for timely adding lubricating oil; the injection molded housing can be conveniently operated by pulling the handle 25, and the filling piece 26 ensures the continuous operation of the oiling mechanism.

[0045] Furthermore, after starting the equipment, the servo motor 7 works, and drives the threaded rod 6 to rotate through the belt drive, thereby adjusting the height of the socket plate 3. When the socket plate 3 is adjusted to the appropriate position, the injection molding shell 1 4 and the injection molding shell 2 5 form an injection molding space with the central injection molding cylinder 2, and the injection molding material is injected to form the inner and outer walls of the corrugated tube. During or after the injection molding process, the oiling mechanism works, and the lubricating oil enters the hollow ring plate 15 through the connecting pipe 19, and then is evenly sprayed on the periphery of the central injection molding cylinder 2 by the spray head 16. After the injection molding of the bellows is completed, the socket plate 3 continues to rise to push the bellows to separate, and at the same time, the resettable guide sliding component works to realize demoulding. After demoulding, the servo motor 7 rotates in the opposite direction to drive the socket plate 3 to descend and reset, and the spring 13 returns to its original state to drive the injection molding shell to reset. The staff can add lubricating oil in time through the filling piece 26; through the above method, the equipment can efficiently and stably complete the production process of double-wall corrugated pipes.

[0046] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only an example and does not constitute a limitation of this specification. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this specification. Such modifications, improvements and corrections are suggested in this specification, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of this specification. At the same time, this specification uses specific words to describe the embodiments of this specification. For example, "one embodiment", "one embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of this specification. Therefore, it should be emphasized and noted that "one embodiment" or "one embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this specification can be appropriately combined. In addition, unless explicitly stated in the claims, the order of processing elements and sequences described in this specification, the use of alphanumeric characters, or the use of other names are not used to limit the order of the processes and methods of this specification.

Claims

1. A double-wall corrugated pipe production device, comprising a base (1) and a central injection molding cylinder (2) fixedly connected to the upper end surface of the base (1), characterized in that: The outer periphery of the central injection molding cylinder (2) is slidably sleeved with a sleeve plate (3), and the surface of the sleeve plate (3) is mounted with an injection molding shell 1 (4) and an injection molding shell 2 (5), which are used to form an injection molding wall with the central injection molding cylinder (2); A height adjustment assembly is connected between the base (1) and the sleeve plate (3), and is used for the sleeve plate (3) to rise and push the bellows that has been injection molded around the periphery of the central injection molding cylinder (2); A resettable guide sliding component is connected between the sleeve plate (3), the first injection molded shell (4) and the second injection molded shell (5), and is used for demoulding the first injection molded shell (4) and the second injection molded shell (5) after they are unfolded; An oiling mechanism is connected between the central injection molding cylinder (2), the first injection molding shell (4) and the second injection molding shell (5) to spray lubricating oil onto the periphery of the central injection molding cylinder (2); A sealing structure is connected between the injection molding shell 1 (4) and the injection molding shell 2 (5) to prevent leakage during injection molding.

2. The double-wall corrugated pipe production equipment according to claim 1, characterized in that: The height adjustment assembly comprises a threaded rod (6) rotatably connected to the upper end surface of the base (1) via a bearing, and the threaded rod (6) is threadedly connected to the sleeve plate (3), so that the sleeve plate (3) moves up and down while the threaded rod (6) rotates; A servo motor (7) is fixedly mounted on the upper end surface of the base (1); a double-groove belt pulley (8) is fixedly connected to the output end of the servo motor (7); a single-groove belt pulley (9) is fixedly mounted on the periphery of the threaded rod (6); and a linkage belt (10) is wound around the peripheries of the double-groove belt pulley (8) and the single-groove belt pulley (9).

3. The double-wall corrugated pipe production equipment according to claim 1, characterized in that: The resettable sliding guide component comprises a strip-shaped through groove (11) formed on the surface of a sleeve plate (3); a transverse fixing rod (12) is fixedly connected between the two end walls of the strip-shaped through groove (11); a spring (13) is sleeved on the periphery of the transverse fixing rod (12); and a sliding sleeve block (14) is slidably sleeved on the periphery of the transverse fixing rod (12).

4. The double-wall corrugated pipe production equipment according to claim 1, characterized in that: The oiling mechanism comprises a hollow ring plate (15) fixedly sleeved on the periphery of a central injection molding cylinder (2); a spray head (16) is connected through the lower end surface of the hollow ring plate (15); a welding block (17) is fixedly welded to the upper end surface of the hollow ring plate (15); an oiling cylinder (18) is fixedly mounted on the hollow ring plate (15) via the welding block (17); a connecting pipe (19) is connected through the oiling cylinder (18) and the hollow ring plate (15); an inner wall piston of the oiling cylinder (18) is connected to a piston block (20); one end surface of the piston block (20) is fixedly connected to a push rod (21); and push plates (22) are fixedly mounted on the upper end surfaces of the injection molding shell 1 (4) and the injection molding shell 2 (5) for pushing the push rod (21) and allowing the lubricating oil inside the oiling cylinder (18) to be introduced into the interior of the hollow ring plate (15).

5. The double-wall corrugated pipe production equipment according to claim 1, characterized in that: The sealing structure comprises a sealing slot (23) provided on the end surface of the injection molded shell 1 (4) opposite to the injection molded shell 2 (5) and a sealing plug plate (24) fixedly connected to the end surface of the injection molded shell 2 (5) opposite to the injection molded shell 1 (4), and the sealing plug plate (24) is inserted into the inner wall of the sealing slot (23).

6. The double-wall corrugated pipe production equipment according to claim 4, characterized in that: The end surfaces of the injection molded shell 1 (4) and the injection molded shell 2 (5) are both fixedly connected with a pulling handle (25), and the outer periphery of the oil filling cylinder (18) is equipped with a filling piece (26) for timely adding lubricating oil to the interior of the oil filling cylinder (18).

7. The double-wall corrugated pipe production equipment according to claim 3, characterized in that: One end of the spring (13) is fixedly connected to the end wall of the strip-shaped through groove (11), and the other end of the spring (13) is fixedly connected to one end surface of the sliding sleeve block (14).

8. The double-wall corrugated pipe production equipment according to claim 3, characterized in that: The sliding sleeves (14) are slidably connected to the inner wall of the strip-shaped through groove (11); the upper end surfaces of two sliding sleeves (14) are fixedly connected to the lower end surface of the first injection molding shell (4); and the upper end surfaces of the other two sliding sleeves (14) are fixedly connected to the lower end surface of the second injection molding shell (5).

9. A method for using a double-wall corrugated pipe production device, comprising the double-wall corrugated pipe production device according to claim 1, characterized in that: The following steps are involved: After the equipment is started, the servo motor (7) starts to work, and drives the threaded rod (6) to rotate through the linkage belt (10) between the double-groove belt pulley (8) and the single-groove belt pulley (9); the rotation of the threaded rod (6) causes the sleeve plate (3) threadedly connected thereto to move up and down, thereby adjusting the distance between the sleeve plate (3) and the base (1) to meet the production requirements of corrugated pipes of different heights; when the sleeve plate (3) is adjusted to an appropriate position, the injection molding shell 1 (4) and the injection molding shell 2 (5) form an injection molding space with the central injection molding cylinder (2) under the support of the sleeve plate (3), and at this time, the injection molding material is injected into the space to form the inner and outer walls of the corrugated pipe; During the injection molding process or after the injection molding is completed, the oiling mechanism starts to work, and the lubricating oil inside the oiling cylinder (18) enters the hollow ring plate (15) through the connecting pipe (19), and is then evenly sprayed on the periphery of the central injection cylinder (2) by the spray head (16); the oiling mechanism is started by the push plate (22) at the upper ends of the injection molding shell 1 (4) and the injection molding shell 2 (5) pushing the push rod (21), thereby driving the piston block (20) to move in the oiling cylinder (18). In this process, the movement of the piston block (20) squeezes the lubricating oil, so that it enters the hollow ring plate (15) through the connecting pipe (19); After the injection molding of the bellows is completed, the sleeve plate (3) continues to rise under the drive of the servo motor (7), pushing the bellows to separate from the central injection molding cylinder (2); at the same time, the resettable guide slide component starts to work. Since the sliding sleeve (14) is slidably connected in the strip-shaped through groove (11) and is subjected to the elastic force of the spring (13), when the injection molding shell 1 (4) and the injection molding shell 2 (5) are unfolded, the sliding sleeve (14) will slide along the strip-shaped through groove (11) and drive the injection molding shell 1 (4) and the injection molding shell 2 (5) to gradually separate, thereby realizing demoulding; After demoulding is completed, the servo motor (7) rotates in the reverse direction, driving the sleeve plate (3) to descend to the initial position, preparing for the next injection molding process; at the same time, the spring (13) in the resettable guide sliding component gradually returns to its original state after the external force is lost, driving the sliding sleeve (14) and the injection molding shell 1 (4) and the injection molding shell 2 (5) to return to the initial position; the staff can timely add lubricating oil to the oil injection cylinder (18) through the filling piece (26) to ensure the continuous operation of the oiling mechanism.

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