CN112622247A - Plastic winding high-rib structure wall pipe and manufacturing method thereof - Google Patents
Plastic winding high-rib structure wall pipe and manufacturing method thereof Download PDFInfo
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- CN112622247A CN112622247A CN202011521513.9A CN202011521513A CN112622247A CN 112622247 A CN112622247 A CN 112622247A CN 202011521513 A CN202011521513 A CN 202011521513A CN 112622247 A CN112622247 A CN 112622247A
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- rib
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- heightening
- shaped
- strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/16—Rigid pipes wound from sheets or strips, with or without reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
The invention discloses a plastic winding high-rib structure wall pipe and a manufacturing method thereof. The base strip forms a tube body with a bottom rib; the heightening rib strip material is spirally wound and adhered on the bottom rib to form the heightening rib wound on the pipe body. The structural wall height of conventional plastic wound structural wall tubes made by single strip winding lateral fusion is limited because the cooled strip thickness limits its minimum bend radius. The scheme of the invention breaks through the above limitation, can greatly improve the ratio of the height of the reinforcing rib to the diameter of the pipeline, and compared with the traditional plastic winding structure wall pipe, the unit meter weight of the manufactured pipe with the same rigidity is obviously reduced; in addition, a plurality of supporting inner ribs are formed in the reinforced high rib by the ingenious manufacturing method and the structure design in the pipeline forming process, so that the structural strength of the reinforced high rib is greatly enhanced; the plastic winding structure wall pipe manufactured by the invention has scientific and reasonable structure, convenient production and manufacture, obvious cost performance and huge market prospect.
Description
Technical Field
The invention relates to a plastic pipeline technology, in particular to a plastic structure wall pipe, in particular to a high-rib corrugated pipe formed by plastic winding and a manufacturing method of the pipe.
Background
The plastic winding structure wall pipe is a pipeline formed by spirally winding an extruded plastic strip on winding equipment, and is widely applied to engineering projects of buried drainage, pollution discharge and the like. Because such pipes need to be buried in deep underground layers, the stiffness of the pressure-bearing ring (external pressure resistance) of the pipe is very important for the pipe, and structural wall plastic pipes (such as corrugated pipes, hollow flat-wall pipes and the like) are widely used due to the fact that the stiffness of the ring is improved at economical material cost. However, the structural wall plastic pipe has the following technical problems:
1. for the structural wall plastic pipe, the external pressure resistance strength is economically improved, and besides the mechanical property of the material, the structural thickness of the pipe is structurally improved, namely simply the ratio of the structural thickness of the pipe to the radius of the pipe is improved, so that a certain ring stiffness is achieved. The plastic winding forming structure wall pipe is mainly formed by the traditional forming method that the cooled formed structure wall belt material is wound and bonded in parallel and side direction to form the pipe. The structural height of the pipe manufactured in the way actually depends on the thickness of the strip in the bending direction, and the thickness of the strip in turn limits the bending radius of the strip, namely the pipe diameter of the pipe which can be bent and wound by the strip, so that the wound structural wall pipe manufactured by the traditional method cannot reach the ideal structural thickness and inner diameter ratio of the pipe, which can only reach 8%, and the internal stress of the pipe manufactured in the way is large, the aging of the material can be accelerated, the service life of the pipe is shortened, and therefore, the traditional forming method cannot manufacture the large-diameter structural wall plastic pipe with high ring stiffness.
2. The manufacturing efficiency of the structural wall plastic pipe must be considered, and in the traditional forming method, the cooling speed and the cooling effect of the structural wall strip after hot melting extrusion by an extruder directly affect the production efficiency of the pipeline, and for this reason, when the structural wall strip is designed, the simpler the structure of the cross section is, the better the structure is, if the hollow cavity without any redundant inner rib is the best structure of the structural wall strip, the part of the strip needing cooling can be close to the vacuum setting water jacket, but the stability of the pipe structural wall reinforcing high rib cannot be improved, and the structural wall reinforcing high rib (such as a corrugated reinforcing rib) is easily collapsed and damaged. Therefore, it is difficult to design the inner ribs (such as Y-shaped inner ribs, cross-shaped inner ribs, etc.) with better mechanical strength by the conventional forming method.
3. The simpler the process of winding the structural wall strip to form the pipeline, the better, in the processing of the structural wall strip with a complex structure, the extrusion of the melt adhesive is almost difficult to realize once, and the one-time sintering forming of the three strips is realized.
The present invention is directed to the problems of the prior art described above and provides a plastic winding pipe with a unique design, particularly a large diameter plastic winding pipe.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a plastic winding structural wall pipe which can achieve high rib and high ring stiffness by winding a cold-formed strip within an effective bending radius.
The invention also provides the plastic winding structure wall pipe which can efficiently and simply form a plurality of high-strength inner ribs in the hollow reinforcing rib, and the structural strength of the high rib is greatly enhanced under the condition of not influencing the manufacturing efficiency.
In order to realize the technical purpose, the scheme of the invention is as follows: a kind of plastic winding structure wall pipe, the said winding pipe is twined by two kinds of plastic hollow special-shaped strips extruded and cooled and shaped spirally, the said two kinds of plastic hollow special-shaped strips are base strip and heightening rib strip separately; spirally winding the base strip material and laterally bonding the base strip material by molten glue to form a pipe body with a hollow bottom rib; the heightening rib strip material is spirally wound on the bottom rib and is adhered on the bottom rib through the melt adhesive to form a hollow strengthening high rib wound on the pipe body.
Further, the base strip is a hollow special-shaped strip with a cross section of a bottom plate and two hollow bulges connected with each other; the hollow bulge comprises an inner side wall, an outer side wall and a top wall bridging the tops of the inner side wall and the outer side wall; when the base strip is wound, the outer side walls of the adjacent hollow bulges are bonded by molten glue, the bonded hollow bulges form a hollow bottom rib on the tube body, and the middle part of the bottom rib is provided with a first supporting inner rib formed by bonding two outer side walls; the vertical height of the inner side wall of the base band material is higher than that of the outer side wall, when the base band material is wound and bonded, the adjacent hollow raised top walls are mutually inclined to form a V-shaped groove, and the V-shaped groove is the top of the bottom rib
Preferably, the cross section of the height-increasing rib strip is of a hollow cavity structure, and the bottom of the height-increasing rib strip is a V-shaped convex matched with the V-shaped groove; the bottom V-shaped convex of the heightening rib strip is pressed on the V-shaped groove of the bottom rib in a striding manner and is bonded by melt adhesive to form a strengthening high rib wound on the pipe body, and meanwhile, a V-shaped second supporting inner rib is formed; the first support inner rib and the second support inner rib form a Y-shaped inner rib for reinforcing the inside of the high rib.
Preferably, the heightening rib strip is formed by laterally bonding two symmetrical hollow primary strips through glue melts, the bottom of the formed heightening rib strip is a V-shaped convex matched with the V-shaped groove, and a third supporting inner rib in the heightening rib is formed on the glue melt bonding surface of the two hollow primary strips; the bottom V-shaped convex of the heightening rib strip is pressed on the V-shaped groove of the bottom rib in a striding manner and is bonded by melt adhesive to form a strengthening high rib wound on the pipe body, and meanwhile, a V-shaped second supporting inner rib is formed; the first supporting inner rib in the bottom rib and the third supporting inner rib in the heightening rib are on the same plane to form a radial vertical inner rib for reinforcing the inside of the high rib.
Preferably, the molten glue used for lateral bonding between the base strips and bonding between the reinforcing rib strips and the bottom ribs is extruded out by one molten glue machine, when the base strips are wound, the molten glue extruded between the outer side walls of the adjacent hollow bulges overflows into the V-shaped grooves by the extrusion of the adjacent base strips, and the V-shaped outer bottoms of the reinforcing rib strips are convexly and straddled on the V-shaped grooves formed by the bottom ribs and bonded by the overflowing molten glue to form the reinforcing high ribs wound on the pipe body.
Preferably, the width of the cross section of the V-shaped outer protrusion is equal to that of the cross section of the V-shaped groove, and two side faces of the heightening rib strip are flush with two side faces of the bottom rib.
Preferably, the width of the cross section of the heightening rib strip is wider than that of the cross section of the bottom rib, two side faces of the heightening rib strip protrude out of two side faces of the bottom rib, and the cross section of the reinforcing high rib is of a hollow T-shaped structure.
Preferably, the reinforced high-rib outer part is further coated with a plastic coating, and the base strip, the reinforced high-rib strip, the melting glue and the plastic coating coated on the reinforced high-rib outer part are all made of PE materials.
Preferably, a reinforced steel sheet or a PP inner layer is compounded in the heightening rib strip.
The invention also provides a method for producing such a plastic wound structural wall pipe.
One of the specific method schemes is as follows: a manufacturing method of a plastic winding structure wall pipe adopts the following process steps: step one, extruding a high-temperature flexible hollow special-shaped base strip and a heightening rib strip through an extrusion die head of plastic extrusion equipment, and then sending the high-temperature base strip and the heightening rib strip into a water tank for carrying out vacuum cooling and shaping on the strips; spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs; and step three, spirally winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib by using a pressing wheel through melt adhesive on the bottom rib to form a strengthened high rib.
Further, the clamping wheel is provided with a clamping groove, the shape of the bottom of the clamping groove is matched with that of the bottom of the heightening rib strip, and the cross section of the opening part of the clamping groove is matched with that of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip is spanned above the clamping wheel and guided by the clamping wheel to move forward, so that the heightening rib strip can be accurately aligned on the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
Preferably, the base strip and the rib-increasing strip are extruded from the same extrusion die, and the extrusion port of the rib-increasing strip is located at the middle upper position of the extrusion port of the base strip.
Preferably, the melt adhesive squeezed between the adjacent base strips in the second step can overflow a certain amount above the bottom rib after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom rib in the third step.
The second specific method scheme is as follows: the manufacturing method of the plastic winding structure wall pipe adopts the following process steps: step one, extruding a high-temperature flexible hollow special-shaped base strip and two hollow primary strips through an extrusion die head of plastic extrusion equipment, and then sending the base strip and the two hollow primary strips into a water tank for carrying out vacuum cooling and shaping on the strips; step two, bonding the two cooled and shaped hollow primary strips through lateral molten gel to form a hollow heightening rib strip with a third supporting inner rib inside; spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs; winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body in a spiral mode through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib through glue melting on the bottom rib by using a pressing wheel to form a strengthened high rib; wherein the second step and the third step are carried out simultaneously.
Further, the clamping wheel is provided with a clamping groove, the shape of the bottom of the clamping groove is matched with that of the bottom of the heightening rib strip, and the cross section of the opening part of the clamping groove is matched with that of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip spans above the clamping wheel and moves at the bottom of the clamping groove under the guidance of the clamping wheel, so that the heightening rib strip can be accurately aligned to the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
Preferably, the base strip and the two hollow primary strips are extruded from the same extrusion die, and the extrusion ports of the two hollow primary strips are located at the middle upper position of the extrusion port of the base strip.
Preferably, the melting glue squeezed between the adjacent base strips in the third step can overflow a certain amount above the bottom rib after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom rib in the fourth step.
The invention has the beneficial effects that: the base pipe is adopted to form the pipe body and the bottom rib, and the heightening rib belt material is bonded to the bottom rib to form the heightening rib, so that the limitation of the effective bending radius of a single belt material on the height of the reinforcing rib is broken through, the ratio of the height of the reinforcing rib to the diameter of the pipeline can be greatly improved, and compared with the traditional plastic winding structure wall pipe, the unit meter weight of the pipe with the same rigidity manufactured by the scheme is obviously reduced; in addition, the ingenious manufacturing method and the structure design enable a plurality of supporting inner ribs to be formed in the reinforced high ribs in the pipeline forming process, the structural strength of the reinforced high ribs is greatly enhanced, and the high ribs are difficult to collapse and be damaged by compression; the plastic winding structure wall pipe and the manufacturing method can effectively improve the production efficiency and save the production cost; the pipe has scientific and reasonable structure, convenient production and manufacture, obvious cost performance and huge market prospect.
Drawings
FIG. 1 is a perspective view of a plastic winding pipe according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the reinforcement high rib at the location A in FIG. 1;
FIG. 3 is a schematic view of the exit of the ribbon extrusion die of the first embodiment of FIG. 1;
FIG. 4 is a schematic view of the structure of the adhesive bonding when the base tape is wound;
FIG. 5 is a schematic view of the structure of the glue melting and bonding when the heightening rib strip is pressed across the bottom rib and wound;
FIG. 6 is a schematic structural view of a plastic coating layer coated on the outer side of the reinforced high rib of the coating layer pressing wheel in the third embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a fourth embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a fifth embodiment of the present invention; (ii) a
FIG. 9 is a schematic structural view of the embodiment of the present invention in which the plastic coating is coated on the outer side of the reinforced high rib;
FIG. 10 is a schematic view of an embodiment of the invention in which the intermediate pressure wheel extrudes a strip-forming conduit;
FIG. 11 is a schematic view of the exit of the strip extrusion die of example two;
FIG. 12 is a schematic view of the exit of the strip extrusion die of example III;
FIG. 13 is a schematic view of extrusion bonding during manufacture of a structural wall tube in accordance with the present invention;
fig. 14 is a schematic cross-sectional view of a fifth embodiment of the present invention.
Wherein: the reinforced high-rib steel pipe comprises a reinforced high rib 1, a pipe body 2, a base strip 3, a reinforced rib strip 4, a Y-shaped inner rib 12, a third supporting inner rib 121, a hollow protrusion 31, an inner side wall 32, an outer side wall 33, a top wall 34, a hollow cavity of the reinforced rib strip 41, a V-shaped outer protrusion 42, a molten rubber 5, a plastic coating 6, a coating pinch roller 7, a PP inner layer 8, a steel strip 9, a clamping wheel 10, a pinch roller 11 and a hollow primary strip 13.
Detailed Description
The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
The invention relates to a plastic winding structure wall pipe, which is mainly made of plastic, such as PE, PP, composite plastic and the like, wherein the specific plastic material is selected by technicians in the field according to the prior art and performance requirements; the winding structure wall pipe related to the present invention is a strip extruded by a plastic extruder through an extrusion die, and after the strip is cooled and formed, the strip is bent and wound by a pipe forming and winding device and is bonded to form a pipe, which are all known in the pipe field and will not be described herein.
The hollow strip after cooling and shaping generates internal stress when being bent and wound, the smaller the bending radius is, the larger the internal stress is, and the maximum limit value of the material stress limits the minimum limit value of the bending radius. The ultimate minimum bend radius of the polyethylene strip cannot be less than 6 times of the structural thickness in the bending direction of the strip, which virtually limits the structural height (thickness) of the wound structural wall pipe manufactured by the conventional cooling strip winding method, and the structural height cannot exceed 8% of the inner diameter of the pipe. In order to produce a wound structural wall pipe with high ring stiffness, the structural height of the structural wall pipe must be increased under an economical weight per meter state. How to achieve the purpose of improving the structural height of the wall pipe of the winding structure under the conditions of larger bending radius of the structural thickness in the bending direction of the winding strip and smaller internal stress of the winding strip is the technical problem to be fully solved by the scheme of the invention.
As shown in fig. 1, 3, 4 and 5, the plastic winding structure wall pipe of the present invention is formed by winding two kinds of plastic hollow special-shaped strips formed by extrusion, wherein the plastic hollow special-shaped strips are a base strip 3 and a heightening rib strip 4 with a hollow cavity respectively; wherein, after being extruded by an extrusion die head from plastic extrusion equipment and cooled and shaped, the base belt material 3 is bent and spirally wound by pipeline forming equipment, and is laterally bonded by molten glue to form a pipe body 2 with a hollow bottom rib, and the bottom rib is wound on the pipe body 2 (namely the pipe wall); the height-increasing bar strip 4 is extruded from an extrusion die head of plastic extrusion equipment, is cooled and shaped, is bent and spirally wound on a bottom bar formed by the base strip 3, and is bonded on the bottom bar through melt adhesive to form a hollow reinforcing height bar 1 wound on the pipe body.
In the embodiment of the present invention, as shown in fig. 3, 11 and 12, the base tape 3 is a hollow profiled tape having a cross section of a bottom sheet connecting two hollow protrusions 31, and the cross section of the heightening rib tape is also hollow, that is, the hollow cavity 41 of the heightening rib tape; the purpose of the hollow protrusions 31 and the hollow cavities 41 is to reduce the material and the weight per meter of the pipeline, and more importantly, the purpose is to facilitate the rapid cooling of the strip, improve the manufacturing efficiency and speed, if the strip is solid or has multiple ribs inside, the strip cannot be rapidly cooled in the manufacturing process, the manufacturing speed must be greatly delayed, and the manufacturing efficiency is reduced, so that the base strip 3 and the heightening rib strip 4 in the invention are both in a hollow structure, and no redundant rib is arranged inside. As seen in fig. 3, the hollow protrusion 31 includes an inner sidewall 32, an outer sidewall 33, and a top wall 34 bridging the tops of the inner and outer sidewalls; the outer side wall 33 of the adjacent hollow protrusion 31 is bonded through the melt adhesive when the base strip 3 is wound, the two adjacent hollow protrusions are bonded to form a bottom rib of the pipe body, the middle part of the bottom rib is provided with a first supporting inner rib formed by combining two outer side walls, the first supporting inner rib is formed in the winding bonding process, the design is ingenious, and the production efficiency is high.
It is emphasized that the height of the bottom rib in the present invention cannot be enough due to the limitation of the bending radius, so that it is not enough to give enough ring stiffness to the pipe body, and therefore the bottom rib needs to be heightened, so that the adhesive heightening rib strip 4 needs to be heightened to form the reinforcing high rib 1 with enough height to achieve the ring stiffness required by the pipe. The method for solving the problem of limitation of the bending radius on the wall thickness (the height of the reinforcing ribs) of the structure by the multi-strip bonding increase is one of the core contributions of the invention, has skillful, scientific and reasonable structure, is particularly easy to implement in production and manufacturing, does not reduce the production and manufacturing efficiency, and has obvious beneficial effects in the technical field.
The vertical height of the inner side wall 32 of the base strip 3 in the embodiment of the present invention is higher than the vertical height of the outer side wall 33, and the structure is such that when the base strip 3 is wound, the top walls 34 of the adjacent hollow protrusions 31 are inclined to each other to form a V-shaped groove which is the top of the bottom rib, as shown in fig. 4, 5, 9 and 10; the bottom of the heightening rib strip 4 is provided with a V-shaped convex 42 matched with the V-shaped groove; the bottom V-shaped convex 42 of the heightening rib strip 4 is spanned on the V-shaped groove of the bottom rib, and is bonded by the melt adhesive to form a strengthening high rib 1 wound on the pipe body and simultaneously form a V-shaped second supporting inner rib, as shown in figures 4 and 5; the first supporting inner rib and the second supporting inner rib form a Y-shaped inner rib 12 inside the reinforced high rib 1, the Y-shaped inner rib 12 is formed in winding and bonding, the design is ingenious, the production efficiency is high, if the inner rib is directly extruded from a hollow strip, the inner rib is difficult to realize in actual production, the cooling and heat dissipation problems of the strip inevitably affect the processing efficiency seriously, and the structure is complex.
In order to further strengthen the structural strength of the high-rib part, in the most preferred embodiment five, as shown in fig. 14, the heightening rib strip 4 is formed by laterally bonding two symmetrical special-shaped hollow primary strips 13 through glue melts, the bottom of the formed heightening rib strip 4 is a V-shaped convex matched with the V-shaped groove, the two hollow primary strips 13 form a third supporting inner rib 121 in the heightening rib through the glue melt bonding surface, and the supporting inner rib 121 strongly supports the hollow cavity of the heightening rib strip, thereby greatly strengthening the structural strength of the heightening rib strip; the bottom V-shaped convex of the heightening rib strip is pressed on the V-shaped groove of the bottom rib in a striding manner and is bonded by melt adhesive to form a strengthening high rib wound on the pipe body, and meanwhile, a V-shaped second supporting inner rib is formed; the first supporting inner rib in the bottom rib and the third supporting inner rib in the heightening rib are on the same plane to form a radial vertical inner rib for reinforcing the inside of the high rib. The finally formed reinforced high rib has a claw-shaped inner rib, and has stronger structural strength compared with the Y-shaped inner rib, so that the reinforced high rib 1 is more difficult to collapse and damage under the condition of being far higher than the height of the common reinforcing rib, and the ring stiffness (namely the pressure bearing capacity) of the pipe body is further powerfully ensured.
In order to facilitate the manufacturing and optimize the manufacturing process, in the specific embodiment of the present invention, as shown in fig. 4, when the base strip 3 is wound, the melt adhesive 5 squeezed between the outer side walls 33 of the adjacent hollow protrusions overflows into the V-shaped groove, and when the V-shaped protrusions 42 at the bottom of the heightening rib strip 4 straddle the V-shaped groove of the bottom rib, the overflowing melt adhesive 5 just adheres the heightening rib strip to the upper portion of the bottom rib formed by the base strip, so as to form the reinforcing high rib 1 wound on the pipe body 2; by the method, the processing complexity is reduced, the molten glue 5 does not need to be extruded additionally, all bonding forming processes can be realized by one-time glue injection, and the production efficiency is greatly improved.
As the first and third embodiments of the present invention, the width of the cross section of the V-shaped outer protrusion is equal to the width of the cross section of the V-shaped groove, and the two side surfaces of the strip of the heightening rib are flush with the two side surfaces of the bottom rib, so that the shape of the manufactured reinforcing high rib is isosceles trapezoid, triangle or isosceles body with arc-shaped top, and those skilled in the art can design accordingly according to specific situations.
As specific examples two and five of the present invention, as shown in fig. 9, 11 and 14, the width of the cross section of the increased rib strip 4 is wider than the width of the cross section of the bottom rib, two side surfaces of the increased rib strip 4 protrude out of two side surfaces of the bottom rib, and the cross section of the formed reinforced high rib 1 is a T-shaped structure; the advantage of this kind of structure lies in that the pipeline is when the construction is buried underground, strengthens the T shape structure of high muscle and soil formation recessed type combination for the pipe soil meshing is better, and pipeline and the joint resistance to compression of meshing soil layer improve the compressive capacity of pipeline in soil, have better stability.
In order to fully utilize the die, further improve the production efficiency, fully utilize equipment and reduce the production cost, the base strip 3 and the heightening rib strip 4 are extruded by the same plastic extrusion die, and the extrusion port of the heightening rib strip 4 is positioned at the middle upper part of the extrusion port of the base strip 3. This makes full use of the area of the die between the two hollow protuberances on the base strip 3, as shown in fig. 3, 11 and 12, which enables the strip extrusion die of the same extruder to simultaneously extrude the base strip 3 and the stiffener strip 4, and also ensures the synchronization of the winding.
In a preferred embodiment, the base strip 3 and the stiffener strip 4 are both made of PE, and the melt adhesive is molten high-temperature PE. In order to further improve the surface smoothness of the pipeline, the outside of the reinforced high rib 1 can be further coated with a plastic coating 6, as shown in fig. 6, 7, 8 and 9, and the material of the plastic coating can be PE material.
In order to further enhance the strength of the reinforced high rib 1, a reinforced steel sheet 9 (as shown in fig. 8) or a PP inner layer 8 (as shown in fig. 7) is further compounded in the reinforced rib strip 4, and a specific compounding method can be realized by those skilled in the art according to the prior art, and is not described in detail in the specification.
The invention also provides two manufacturing methods, wherein the method is a manufacturing method for the reinforced bar strip without the inner rib, and the method is a manufacturing method for the reinforced bar strip with the inner rib.
The method comprises the following steps:
a method for manufacturing a plastic winding structure wall pipe comprises the following process steps:
step one, extruding a high-temperature flexible hollow special-shaped base strip and a heightening rib strip through an extrusion die head of plastic extrusion equipment, and simultaneously feeding the high-temperature base strip and the heightening rib strip into a water tank for strip vacuum cooling and shaping;
spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs;
and step three, spirally winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib through the glue melt on the bottom rib by using a pressing wheel to form the strengthened high rib.
As a preferred implementation method in the first method, referring to fig. 13, the pinch roller 10 has a pinch groove, the shape of the bottom of the pinch groove matches with the shape of the bottom of the raised rib strip, and the cross section of the opening of the pinch groove matches with the cross section of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip is spanned in the clamping groove above the clamping wheel and moves forward under the guidance of the clamping wheel, so that the heightening rib strip can be accurately aligned to the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
Preferably, the base strip and the rib-increasing strip are extruded from the same extrusion die, and the extrusion port of the rib-increasing strip is located at the middle upper position of the extrusion port of the base strip.
Preferably, the melt adhesive squeezed between the adjacent base strips in the second step can overflow a certain amount above the bottom rib after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom rib in the third step.
The second method comprises the following steps:
a method for manufacturing a plastic winding structure wall pipe comprises the following process steps: step one, extruding a high-temperature flexible hollow special-shaped base strip and two hollow primary strips through an extrusion die head of plastic extrusion equipment, and simultaneously feeding the base strip and the two hollow primary strips into a water tank for strip cooling and shaping; step two, bonding the two cooled and shaped hollow primary strips through lateral molten gel to form a hollow heightening rib strip with a third supporting inner rib inside; spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs; winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body in a spiral mode through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib through glue melting on the bottom rib by using a pressing wheel to form a strengthened high rib; wherein the second step and the third step are carried out simultaneously.
As a preferred implementation method in the second method, as shown in fig. 13, the pinch roller 10 has a pinch groove, the shape of the bottom of the pinch groove matches with the shape of the bottom of the raised rib strip, and the cross section of the opening of the pinch groove matches with the cross section of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip spans above the clamping wheel and moves at the bottom of the clamping groove under the guidance of the clamping wheel, so that the heightening rib strip can be accurately aligned to the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
Preferably, the base strip and the two hollow primary strips are extruded from the same extrusion die, and the extrusion ports of the two hollow primary strips are located at the middle upper position of the extrusion port of the base strip.
Preferably, the melting glue squeezed between the adjacent base strips in the third step can overflow a certain amount above the bottom rib after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom rib in the fourth step.
Finally, it should be emphasized that the entire text and drawings of the present invention only describe an embodiment in which the raised rib strip is one strip, and those skilled in the art can completely design a scheme of more than one raised rib strip according to the scheme of the present invention, for example, after a first raised rib strip is wound around the bottom rib, a second raised rib strip is bonded to the top of the first raised rib strip, and so on, the specific raised rib shape and the number of wound raised ribs can be designed according to the thickness (e.g., the height of the external corrugated rib) required by the actual structural wall, which are derived and expanded based on the present invention.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (17)
1. The utility model provides a plastics winding high muscle structure wall pipe which characterized in that: the winding pipe is formed by spirally winding two types of extruded, cooled and shaped plastic hollow special-shaped strips, wherein the two types of plastic hollow special-shaped strips are a base strip and a heightening rib strip respectively; spirally winding the base strip material and laterally bonding the base strip material by molten glue to form a pipe body with a hollow bottom rib; the heightening rib strip material is spirally wound on the bottom rib and is adhered on the bottom rib through the melt adhesive to form a hollow strengthening high rib wound on the pipe body.
2. The plastic wound high rib structural wall tube of claim 1, wherein: the base strip is a hollow special-shaped strip with a cross section of a bottom plate and two hollow bulges connected with each other; the hollow bulge comprises an inner side wall, an outer side wall and a top wall bridging the tops of the inner side wall and the outer side wall; when the base strip is wound, the outer side walls of the adjacent hollow bulges are bonded by molten glue, the bonded hollow bulges form a hollow bottom rib on the tube body, and the middle part of the bottom rib is provided with a first supporting inner rib formed by bonding two outer side walls; the vertical height of the inner side wall of the base band material is higher than that of the outer side wall, when the base band material is wound and bonded, the adjacent hollow raised top walls are mutually inclined to form a V-shaped groove, and the V-shaped groove is the top of the bottom rib.
3. A plastic wound high rib structural wall tube as claimed in claim 2, wherein: the cross section of the heightening rib strip is of a hollow cavity structure, and the bottom of the heightening rib strip is provided with a V-shaped convex matched with the V-shaped groove; the bottom V-shaped convex of the heightening rib strip is pressed on the V-shaped groove of the bottom rib in a striding manner and is bonded by melt adhesive to form a strengthening high rib wound on the pipe body, and meanwhile, a V-shaped second supporting inner rib is formed; the first support inner rib and the second support inner rib form a Y-shaped inner rib for reinforcing the inside of the high rib.
4. A plastic wound high rib structural wall tube as claimed in claim 2, wherein: the heightening rib strip is formed by laterally bonding two symmetrical hollow primary strips through glue melts, the bottom of the formed heightening rib strip is a V-shaped convex matched with the V-shaped groove, and a third supporting inner rib in the heightening rib is formed on the fusion bonding surface of the two hollow primary strips; the bottom V-shaped convex of the heightening rib strip is pressed on the V-shaped groove of the bottom rib in a striding manner and is bonded by melt adhesive to form a strengthening high rib wound on the pipe body, and meanwhile, a V-shaped second supporting inner rib is formed; the first supporting inner rib in the bottom rib and the third supporting inner rib in the heightening rib are on the same plane to form a radial vertical inner rib for reinforcing the inside of the high rib.
5. A plastic wound high rib structural wall tube as claimed in any one of claims 3 or 4, wherein: the molten glue used for lateral bonding between the base strips and bonding between the reinforcing rib strips and the bottom ribs is simultaneously extruded by one molten glue machine, when the base strips are wound, the molten glue extruded between the outer side walls of the adjacent hollow bulges is overflowed out of the V-shaped grooves by the extrusion of the adjacent base strips, the V-shaped outer sides of the bottom of the reinforcing rib strips are convexly pressed on the V-shaped grooves formed by the bottom ribs in a spanning mode, and the reinforcing rib wound on the pipe body is formed by bonding the overflowed molten glue.
6. The plastic wound high rib structural wall tube of claim 5, wherein: the width of the cross section of the V-shaped convex is equal to that of the cross section of the V-shaped groove, and two side faces of the heightening rib strip are flush with two side faces of the bottom rib.
7. The plastic wound high rib structural wall tube of claim 5, wherein: the width of the cross section of the heightening rib strip is wider than that of the cross section of the bottom rib, two side faces of the heightening rib strip protrude out of two side faces of the bottom rib, and the cross section of the reinforcing high rib is of a hollow T-shaped structure.
8. A plastic wound high rib structural wall tube as claimed in any one of claims 1 to 4, wherein: a plastic coating is further coated outside the reinforced high ribs; the base strip, the heightening rib strip, the melting glue and the plastic coating layer coated outside the heightening rib are all made of PE materials.
9. A plastic wound high rib structural wall tube as claimed in claims 1 to 4, wherein: and a reinforced steel sheet or PP inner layer is compounded in the heightening rib strip.
10. A method of manufacturing a plastic wound high-rib structural wall tube according to any of claims 1 to 3, characterised by the following process steps:
step one, extruding a high-temperature flexible hollow special-shaped base strip and a heightening rib strip through an extrusion die head of plastic extrusion equipment, and then sending the high-temperature base strip and the heightening rib strip into a water tank for carrying out vacuum cooling and shaping on the strips;
spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs;
and step three, spirally winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib by using a pressing wheel through melt adhesive on the bottom rib to form a strengthened high rib.
11. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 10, wherein: the clamping wheel is provided with a clamping groove, the shape of the bottom of the clamping groove is matched with that of the bottom of the heightening rib strip, and the cross section of the opening part of the clamping groove is matched with that of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip is spanned above the clamping wheel and guided by the clamping wheel to move forward, so that the heightening rib strip can be accurately aligned on the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
12. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 10, wherein: the base strip and the heightening rib strip are extruded by the same extrusion die head, and the extrusion port of the heightening rib strip is positioned at the middle upper part of the extrusion port of the base strip.
13. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 10, wherein: the molten glue squeezed between the adjacent base strips in the second step can overflow a certain amount of molten glue on the bottom ribs after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom ribs in the third step.
14. A method for manufacturing a plastic-wound high-rib structural wall pipe according to claim 4, characterized by the following process steps:
step one, extruding a high-temperature flexible hollow special-shaped base strip and two hollow primary strips through an extrusion die head of plastic extrusion equipment, and then sending the base strip and the two hollow primary strips into a water tank for carrying out vacuum cooling and shaping on the strips;
step two, bonding the two cooled and shaped hollow primary strips through lateral molten gel to form a hollow heightening rib strip with a third supporting inner rib inside;
spirally winding the cooled and shaped base strips through a pipe forming device, extruding molten glue between adjacent base strips, and clamping and bonding the adjacent base strips through a clamping wheel to form a pipe body with bottom ribs;
winding the cooled and shaped heightening rib strip on a bottom rib of the pipe body in a spiral mode through the same pipe forming equipment, and bonding the heightening rib strip with the bottom rib through glue melting on the bottom rib by using a pressing wheel to form a strengthened high rib;
wherein the second step and the third step are carried out simultaneously.
15. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 14, wherein: the clamping wheel is provided with a clamping groove, the shape of the bottom of the clamping groove is matched with that of the bottom of the heightening rib strip, and the cross section of the opening part of the clamping groove is matched with that of the bottom rib; when the base strip is clamped through the opening part of the clamping groove below the clamping wheel, the heightening rib strip spans above the clamping wheel and moves at the bottom of the clamping groove under the guidance of the clamping wheel, so that the heightening rib strip can be accurately aligned to the bottom rib; the pinch roller is provided with a pressing groove, and the cross section of the pressing groove is matched with that of the reinforced high rib.
16. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 14, wherein: the base strip and the two hollow primary strips are extruded by the same extrusion die head, and the extrusion ports of the two hollow primary strips are positioned at the middle upper part of the extrusion port of the base strip.
17. A method of manufacturing a plastic wound high rib structural wall tube as claimed in claim 14, wherein: the melting glue extruded between the adjacent base strips in the third step can overflow a certain amount of melting glue on the bottom ribs after the clamping wheels clamp and bond the base strips, and is used for bonding the heightening rib strips and the bottom ribs in the fourth step.
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| CN202011521513.9A CN112622247A (en) | 2020-12-21 | 2020-12-21 | Plastic winding high-rib structure wall pipe and manufacturing method thereof |
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| CN202011521513.9A CN112622247A (en) | 2020-12-21 | 2020-12-21 | Plastic winding high-rib structure wall pipe and manufacturing method thereof |
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