Production line of enhanced winding corrugated pipe
By using V-shaped glass fiber composite strip and guide support structure in the enhanced winding corrugated pipe production line, the problem of steel-plastic separation and high production costs is solved, the high-quality production and wide application of corrugated pipes is achieved, and environmental pollution is reduced .
Patent Information
- Application Number
- CN202411427003.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2024-12-17
AI Technical Summary
The existing reinforced winding corrugated pipe production equipment has problems such as steel-plastic separation, steel strips popping out, high production costs and difficulty in recycling, resulting in unstable quality of corrugated pipes and environmental pollution.
Use V-shaped glass fiber composite strip to replace the steel strip, and introduce guide support and pressure plate structures into the production line. Through sliding fit relationship and articulation design, ensure the support and molding quality of glass fiber composite strip, reduce production costs, and improve corrugated pipes. service life and application range.
It effectively reduces production costs, improves the service life and application range of bellows, ensures the quality and lateral support strength of bellows, and reduces defective rates and environmental pollution.
Smart Images
Figure CN119141925A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a production line for a reinforced winding corrugated pipe, belonging to the technical field of production equipment for the reinforced winding corrugated pipe. Background Art
[0002] The existing production equipment of enhanced wound corrugated pipes is shown in the Chinese invention patent "Authorization Announcement Number: CN114393803B; Authorization Announcement Date: February 9, 2024; Patent Name: Steel Strip Corrugated Pipe Production Line and Production Process", including inner and outer PE strip extrusion devices, steel strip forming mechanisms, steel strip conveying mechanisms, winding mechanisms, forming pressure wheel groups with lifting functions, and corrugated pipe cooling devices. When winding the corrugated pipe, the production line first spirally winds the inner PE strip on the winding mechanism, and then spirally winds the formed and pre-bent steel strip on the inner PE strip, and finally uses the outer layer PE to spirally wrap the steel strip and the inner PE strip. This solution has the following defects: 1. Due to the characteristics of the steel strip corrugated tube itself and the limitations of the existing production process, the steel strip corrugated tube is prone to quality problems such as steel-plastic separation and steel strip popping out. In addition, the steel strip corrugated tube is difficult to recycle, which not only wastes resources but also causes long-term pollution to the environment; 2. During the production process, the pre-bent steel strip will gradually accumulate the stress generated by the winding of the previous steel strip. The accumulation of excessive stress will increase the difficulty of winding the corrugated tube and increase the defective rate of the corrugated tube; 3. The steel strip is generally purchased, and there is a problem of high production cost. Summary of the invention
[0003] The purpose of the present invention is to provide a new enhanced winding corrugated pipe production line in view of the above-mentioned technical defects of the existing enhanced winding corrugated pipe production equipment. The production line adopts V-shaped glass fiber composite strip to replace the steel strip that is costly and difficult to process and wind, which not only reduces the production cost, but also prolongs the service life of the corrugated pipe and expands the application range of the corrugated pipe. The guide support padded in the cavity between the glass fiber composite strip and the inner layer of PE is used to avoid the defect of poor lateral support capacity caused by transitional deformation of the glass fiber composite strip during press molding, which can further effectively ensure the quality of the corrugated pipe.
[0004] The above technical objectives of the present invention are achieved through the following technical solutions:
[0005] A production line for an enhanced winding corrugated pipe comprises a transversely suspended winding assembly and an inner PE extrusion die head, an outer PE extrusion die head and an outer extrusion molding device equipped with the winding assembly, wherein an inner PE strip extruded by the inner PE extrusion die head and an outer PE strip extruded by the outer PE extrusion die head are spirally wound on the winding assembly from the inside to the outside in sequence; the production line also comprises a glass fiber composite strip extrusion device equipped with the winding assembly, in the axial direction of the winding assembly, the glass fiber composite strip extruded by the glass fiber composite strip extrusion device is overlapped on the winding assembly at a position between the inner PE extrusion die head and the outer PE extrusion die head, and with the rotation of the winding assembly, a spiral on the winding assembly is realized. Winding; the cross-section of the glass fiber composite tape extruded by the glass fiber composite tape extrusion device is V-shaped or arc-shaped. When winding, the glass fiber composite tape is spirally wound on the outer surface of the inner PE tape on the winding component in the form of the inner concave side facing the inner PE tape, and the outer PE tape is spirally wound on the outer surface of the glass fiber composite tape. The inner PE tape, the glass fiber composite tape and the outer PE tape are bonded and formed by extrusion of the winding component and the extrusion molding device; the glass fiber composite tape is lapped on the outer surface of the inner PE tape on the winding component through the guidance of the guide support, the guide support has a smooth surface and is located in the concave of the glass fiber composite tape, and the guide support corresponds to the extrusion molding wheel group of the extrusion molding device.
[0006] By adopting the above technical scheme, a production line for enhanced winding corrugated pipes is provided, which adopts V-shaped glass fiber composite strips to replace the steel strips that are costly and difficult to process and wind. The glass fiber composite strips have the advantages of light weight, easy processing, low production cost, high corrosion resistance, good adhesion with inner and outer PE strips, recyclability, green environmental protection, etc., which not only reduces the production cost, but also improves the service life and application range of the corrugated pipe, so that it can be widely used in rainwater, sewage, chemical industry, coal drainage and exhaust and other fields; and the guide support padded in the cavity between the glass fiber composite strip and the inner layer of PE is used to avoid the defect of poor lateral support capacity caused by transitional deformation of the glass fiber composite strip during pressing and molding, which can further ensure the quality of the corrugated pipe.
[0007] The present invention is further configured as follows: the outer surface of the guide support is in a sliding fit relationship with the channel surrounded by the glass fiber composite tape and the inner PE tape.
[0008] By adopting the above technical solution, the guide support and the channel between the glass fiber composite strip and the inner layer of PE are designed to be in a sliding fit relationship, which can effectively ensure that the guide support maintains the concave shape of the glass fiber composite strip, and can effectively ensure the lateral support strength of the corrugated pipe after molding.
[0009] The present invention is further configured as follows: the guide support is hinged at the upper end of the guide bracket, and the guide support can swing slightly in radial direction along with the extrusion of the extrusion forming wheel set.
[0010] By adopting the above technical solution, the guide support is hinged at the upper end of the guide bracket. When the outer molding wheel group extrude the inner and outer layers of PE and the middle layer of PP to bond and form, the guide support can reduce the transition compression of a certain bonding layer due to radial extrusion through a small radial swing, which can maximize the guarantee that the thickness of each bonding layer does not deviate from the designed thickness, and can further guarantee the quality of the corrugated pipe.
[0011] The present invention is further configured as follows: a pressing plate with needles for compacting the inner PE tape is provided on the top of the guide bracket, on the side away from the axial moving direction of the corrugated pipe.
[0012] By adopting the above technical solution, a pressure plate is set on the side of the top of the guide bracket away from the axial movement direction of the corrugated pipe, and the pressure plate can realize extrusion molding of the inner layer PE. This solution integrates the guide support and the pressure plate on the guide bracket, simplifying the structure of the device.
[0013] The present invention is further configured as follows: the pressing plate is detachably fixed to the upper end of the guide bracket or is hinged to the upper end of the guide bracket by a pin shaft.
[0014] By adopting the above technical solution, the pressing plate is designed to be detachable or swingable, providing a variety of installation methods for the pressing plate. Among them, when the pressing plate can swing up and down, sufficient counterweight is provided on the pressing plate to achieve extrusion molding of the inner layer PE.
[0015] The present invention is further configured as follows: the inner layer PE extrusion die head and the outer layer PE extrusion die head are uniformly provided with PE material in a molten state by a PE extrusion device.
[0016] By adopting the above technical solution, the inner and outer layer PE extrusion die heads are integrated on the same PE integrated device, thereby simplifying the device.
[0017] The present invention is further configured as follows: the PE extrusion device and the glass fiber composite strip extrusion device are located on the same side of the winding assembly, and a pipe body cooling device for the corrugated pipe is provided on the other side of the winding assembly.
[0018] By adopting the above technical solution, the PE extrusion device, the glass fiber composite strip extrusion device and the pipe cooling device are respectively arranged on both sides of the corrugated pipe, which is convenient for feeding and molding and cooling of the corrugated pipe.
[0019] The present invention is further configured as follows: the glass fiber composite tape extruded by the glass fiber composite tape extrusion device is cooled by a preliminary cooling device and then wound onto a winding assembly.
[0020] By adopting the above technical solution, the glass fiber composite tape is initially cooled before winding, so that the glass fiber composite tape can both initially maintain its appearance and have suitable bonding hardness. This solution can effectively ensure the bonding quality of the corrugated pipe.
[0021] The present invention is further configured as follows: the winding assembly comprises a rotating drum suspended on one side of the column and a driving device for the rotating drum.
[0022] By adopting the above technical solution, the specific structure of the winding component is limited.
[0023] The main beneficial effects of the present invention are:
[0024] 1. The production line of the present invention adopts V-shaped glass fiber composite strips to replace the steel strips which are costly and difficult to process and wind. The glass fiber composite strips have the advantages of light weight, easy processing, low production cost, high corrosion resistance, good adhesion with inner and outer PE strips, recyclability, and green environmental protection. It not only reduces the production cost, but also improves the service life and application range of the corrugated pipe, so that it can be widely used in rainwater, sewage, chemical industry, coal drainage and exhaust and other fields; and the guide support padded in the cavity between the glass fiber composite strip and the inner layer of PE is used to avoid the defect of poor lateral support capacity caused by transitional deformation of the glass fiber composite strip during pressing and molding, which can further ensure the quality of the corrugated pipe.
[0025] 2. The production line of the present invention designs the guide support and the channel between the glass fiber composite strip and the inner layer of PE into a sliding fit relationship, which can effectively ensure that the guide support maintains the concave shape of the glass fiber composite strip and effectively ensure the lateral support strength of the corrugated pipe after molding.
[0026] 3. The production line of the present invention hinges the guide support at the upper end of the guide bracket. When the outer molding wheel group extrude the inner and outer layers of PE and the middle layer of PP to bond and form, the guide support can reduce the transition compression of a certain bonding layer due to radial extrusion through a small radial swing, which can maximize the guarantee that the thickness of each bonding layer does not deviate from the designed thickness, and can further guarantee the quality of the corrugated pipe.
[0027] 4. The production line of the present invention sets a pressing plate on the side of the top of the guide bracket away from the axial moving direction of the corrugated pipe, and the pressing plate can realize the extrusion molding of the inner layer PE. This solution integrates the guide support and the pressing plate on the guide bracket, simplifying the structure of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0029] Figure 1 It is a schematic diagram of the structure of the present invention;
[0030] Figure 2 yes Figure 1 The enlarged view of point A in the middle;
[0031] Figure 3 It is a schematic diagram of the structure when the inner layer PE tape, the glass fiber composite tape and the outer layer PE tape are bonded and formed in the present invention;
[0032] Figure 4 yes Figure 3 Enlarged view of point B in the middle.
[0033] In the figure, 1. glass fiber composite strip extrusion device; 2. preliminary cooling device; 3. glass fiber composite strip; 4. frame; 5. PE extrusion device; 6. extrusion molding wheel group; 7. push cylinder; 8. auxiliary molding wheel; 9. pipe cooling device; 10. rotating drum; 11. column; 12. corrugated pipe; 13. guide bracket; 14. inner layer PE extrusion die; 15. outer layer PE extrusion die; 16. inner layer PE strip; 17. outer layer PE strip; 18. spiral protrusion; 19. guide support; 20. pressing plate. DETAILED DESCRIPTION
[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0035] Embodiment 1:
[0036] like Figures 1 to 4As shown, a production line of a reinforced winding corrugated pipe comprises a winding assembly suspended laterally on a column 11, and a PE extrusion device 5, a glass fiber composite strip extrusion device 1, an outer extrusion molding device and a tank cooling device 9 provided with the winding assembly. The spray extrusion device 5 provides an inner layer PE strip 16 and an outer layer spray strip 17 for the winding assembly through an inner layer PE extrusion die 14 and an outer layer PE extrusion die 15, respectively, and the glass fiber composite strip extrusion device 1 provides a glass fiber composite strip 3 with a V-shaped or arc-shaped cross section for the winding assembly. The inner layer PE strip 16, the glass fiber composite strip 3, and the outer layer PE strip 17 are spirally wound on the winding assembly from the inside to the outside in sequence, and finally, through radial extrusion by the outer extrusion molding device, the three layers of strips are bonded and formed to form a corrugated pipe 12, and the glass fiber composite strip protruding in the middle forms a spiral protrusion 18 on the surface of the corrugated pipe 12.
[0037] The winding assembly includes a drum 10 suspended on one side of a column 11 and a driving device for the drum 10 .
[0038] The PE extrusion device 5 and the glass fiber composite strip extrusion device 1 are located on the same side of the winding assembly, and the other side of the winding assembly is provided with a tube cooling device 9 for the corrugated tube. The outer glass fiber composite strip 3 is added with glass fiber material, which can be meshed or evenly dispersed.
[0039] The glass fiber composite tape 3 extruded by the glass fiber composite tape extrusion device 1 is cooled by the preliminary cooling device 2 and then wound onto the winding assembly.
[0040] In the axial direction of the winding assembly, the glass fiber composite tape 3 extruded by the glass fiber composite tape extrusion device 1 is overlapped on the drum 10 of the winding assembly at the position between the inner PE extrusion die head 14 and the outer PE extrusion die head 15, and the glass fiber composite tape 3 is spirally wound on the drum 10 as the drum 10 rotates. During winding, the glass fiber composite tape 3 is spirally wound on the outer surface of the inner PE tape 16 on the winding assembly in the form of the inner concave side facing the inner PE tape 16, and the outer PE tape 17 is spirally wound on the outer surface of the glass fiber composite tape 3, and the inner PE tape 16, the glass fiber composite tape 3 and the outer PE tape 17 are bonded and formed by extrusion of the winding assembly and the extrusion molding device.
[0041] The glass fiber composite strip 3 is guided by the guide support 19 and rests on the outer surface of the inner layer PE strip 16 on the winding assembly. The guide support 19 has a smooth surface and is located in the inner concave of the glass fiber composite strip 3. The guide support 19 corresponds to the extrusion molding wheel set 6 of the extrusion molding device. The outer surface of the guide support 19 is in a sliding fit relationship with the channel surrounded by the glass fiber composite strip 3 and the inner layer PE strip 16. The guide support 19 is hinged at the upper end of the guide bracket 13, and the guide support 19 can swing slightly radially with the extrusion of the extrusion molding wheel set 6. At the top of the guide bracket 13, on the side away from the axial movement direction of the corrugated tube 12, a pressure plate 20 with a needle for compacting the inner layer PE strip 16 is provided. The pressure plate 20 is detachably fixed to the upper end of the guide bracket 13 or hinged to the upper end of the guide bracket 13 by a pin.
[0042] The outer extrusion molding device includes a main extrusion molding device and an auxiliary extrusion molding device. The main extrusion molding device controls the up and down movement of the extrusion molding wheel set 6 through the action of the push cylinder 7 to achieve cooperation with the rotating drum 10. The extrusion molding wheel set 6 faces the guide support 19. During use, the extrusion molding wheel 6 can also rotate actively. The actively rotating extrusion molding wheel 6 can achieve the extrusion molding of the three-layer strip and push the axial movement of the corrugated tube 12 to cut materials in an almost frictionless condition through the rotation cooperation with the rotating drum 10. The auxiliary extrusion molding wheel 8 of the auxiliary extrusion molding device is located at the lower position of the rotation direction of the corrugated tube 12, and is used to fine-tune the shape of the corrugated tube 12.
[0043] How it works:
[0044] The driving device drives the drum 10 as Figure 1 and Figure 3 As shown, it rotates clockwise, firstly, the inner layer PE strip 16 extruded by the inner layer PE extrusion die 14 is spirally wound on the drum 10, and the inner layer PE strip 16 is extruded by the pressing plate 20 to form an inner layer tube body on the drum 10; then, the glass fiber composite strip 3 that has been initially cooled is spirally wound on the inner layer tube body, and the inner concave inner pad of the glass fiber composite strip 3 is provided with a guide support 19; then, the outer layer PE strip 17 is spirally wound on the outer side of the glass fiber composite strip 3 and the inner layer tube body; then, the strip outside the guide support 19 is extruded by the extrusion molding wheel group 6, so that the three-layer strip can be bonded and molded; finally, the outer shape of the corrugated tube 12 is refined by the auxiliary extrusion molding wheel 8, and after the tube body cooling device 9 cools the corrugated tube 12, the corrugated tube 12 is actively rotated by the extrusion molding wheel 6 to axially push the corrugated tube 12 to realize the axial feeding of the corrugated tube 12.
Claims
1. A production line for a reinforced wound corrugated pipe, comprising a transversely suspended winding assembly and an inner PE extrusion die head (14), an outer PE extrusion die head (15) and an outer extrusion molding device equipped with the winding assembly, wherein an inner PE strip (16) extruded by the inner PE extrusion die head (14) and an outer PE strip (17) extruded by the outer PE extrusion die head (15) are spirally wound on the winding assembly from the inside to the outside in sequence; characterized in that: The production line also includes a glass fiber composite strip extrusion device (1) equipped with a winding assembly. In the axial direction of the winding assembly, the glass fiber composite strip (3) extruded by the glass fiber composite strip extrusion device (1) is overlapped on the winding assembly at a position between the inner PE extrusion die head (14) and the outer PE extrusion die head (15), and spirally wound on the winding assembly as the winding assembly rotates; the cross-section of the glass fiber composite strip (3) extruded by the glass fiber composite strip extrusion device (1) is V-shaped or arc-shaped. When winding, the glass fiber composite strip (3) is spirally wound on the winding assembly in the form of an inner concave side facing the inner PE strip (16). The outer surface of the inner PE tape (16) and the outer PE tape (17) are spirally wound on the outer surface of the glass fiber composite tape (3). The inner PE tape (16), the glass fiber composite tape (3) and the outer PE tape (17) are bonded and formed by extrusion of a winding assembly and an extrusion molding device; the glass fiber composite tape (3) is guided by a guide support (19) and rests on the outer surface of the inner PE tape (16) on the winding assembly. The guide support (19) has a smooth surface and is located in the inner concave of the glass fiber composite tape (3). The guide support (19) corresponds to the extrusion molding wheel group (6) of the extrusion molding device.
2. The production line of a reinforced winding corrugated pipe according to claim 1 is characterized in that: The outer surface of the guide support (19) is in a sliding fit relationship with the channel enclosed by the glass fiber composite strip (3) and the inner layer PE strip (16).
3. The production line of a reinforced winding corrugated pipe according to claim 2 is characterized in that: The guide support (19) is hinged to the upper end of the guide bracket (13), and the guide support (19) can swing slightly in radial direction along with the extrusion of the extrusion molding wheel group (6).
4. The production line of a reinforced wound corrugated pipe according to claim 3 is characterized in that: A pressing plate (20) with needles for compacting the inner PE tape (16) is provided on the top of the guide bracket (13), on the side away from the axial moving direction of the corrugated tube (12).
5. The production line of a reinforced wound corrugated pipe according to claim 4, characterized in that: The pressing plate (20) is detachably fixed to the upper end of the guide bracket (13) or is hinged to the upper end of the guide bracket (13) using a pin shaft.
6. The production line of a reinforced wound corrugated pipe according to claim 1, characterized in that: The inner layer PE extrusion die head (14) and the outer layer PE extrusion die head (15) are uniformly provided with PE material in a molten state by the PE extrusion device (5).
7. The production line of the enhanced wound corrugated pipe according to claim 6, characterized in that: The PE extrusion device (5) and the glass fiber composite strip extrusion device (1) are located on the same side of the winding assembly, and a tube cooling device (9) for the corrugated tube is provided on the other side of the winding assembly.
8. The production line of the enhanced wound corrugated pipe according to claim 7, characterized in that: The glass fiber composite strip (3) extruded by the glass fiber composite strip extrusion device (1) is cooled by the preliminary cooling device (2) and then wound onto a winding assembly.
9. The production line of a reinforced wound corrugated pipe according to claim 1, characterized in that: The winding assembly comprises a rotating drum (10) suspended on one side of a column (11) and a driving device for the rotating drum (10).