CN107830269A - Helical bellows and its manufacture method with supporting rib stiffener structure - Google Patents
Helical bellows and its manufacture method with supporting rib stiffener structure Download PDFInfo
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- CN107830269A CN107830269A CN201711262450.8A CN201711262450A CN107830269A CN 107830269 A CN107830269 A CN 107830269A CN 201711262450 A CN201711262450 A CN 201711262450A CN 107830269 A CN107830269 A CN 107830269A
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Classifications
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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
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/18—Pleated or corrugated hoses
-
- 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
-
- 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
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The present invention relates to a kind of helical bellows and its manufacture method with supporting rib stiffener structure,Including outer layer,Internal layer and the supporting layer being arranged between outer layer and internal layer,Outer layer and supporting layer shape in spiral distribution,Internal layer is cylindrical shape,Peak structure includes outer layer crest,The big crest of supporting layer and the small crest of supporting layer,Gap is left between the big crest inner surface of supporting layer and the small crest outer surface of supporting layer,Peak structure also includes strengthening rib strip,Form the mechanics triangle relation of firm stable,Not only greatly improve the compressive property of bellows,Anti-damage performance and ring stiffness,And outer layer crest can pass through supporting layer big crest when by external force,Strengthening rib strip and the small crest of supporting layer are transferred to internal layer,External force is effectively dissolved,Protect pipeline,In addition the unstressed centrostigma of tubing,Each position uniform force,Greatly extend service life,The manufacture method not only process stabilizing,It is simple to operate,Speed of production is fast,And heat seal strength is high,Steady quality.
Description
Technical field
The present invention relates to bellows field, more particularly to a kind of helical bellows and its system with supporting rib stiffener structure
Make method.
Background technology
The tubing in the fields such as draining blowdown at present is generally steel plastic compount helical bellows and HDPE double-wall corrugated pipes, wherein
The shortcomings that following be present in steel plastic compount helical bellows：1st, the cementability of steel and plastics is poor, and in process, steel band is present
Great internal stress, tubing is caused after outdoor placement certain time, because of the influence for the factor such as expand with heat and contract with cold, steel modeling occurs serious
Segregation phenomenon, so as to cause tubing after buried, its ring stiffness degradation, cause engineering accident；2nd, it is resistance to due to steel band
Corrosivity is poor, is producing and in work progress, is easily causing steel band corrosion, is causing engineering accident so as to destroy tubing；3rd, impact
Poor performance, when by external impacts, steel modeling is easily layered steel-plastics composite pipe；4th, anti-destructive is poor, is at tubing crest
Unicast peak structure, as long as being destroyed at crest by external force, then aqueous or foreign matter will enter ripple intracavitary, corrode in steel band and destruction
Layer, ultimately cause the overall destruction of tubing.
The shortcomings that following be present in HDPE double-wall corrugated pipes：1st, tubing is unicast peak structure, and shock resistance is destructive poor, uniquely
After individual layer crest is destroyed, then external force is acted directly on internal layer, easily causes interior damage layer, and the final water conservancy diversion for destroying tubing is made
With；2nd, tubing is for unicast peak and without brace rod, and ring stiffness is low, critical external compressive resistance poor performance；3rd, tubing weight weight, high material consumption, into
This height；3rd, pipe diameter normally only limits below 1000mm, uneconomical more than 1000mm, and tubing intensity declines seriously in itself, makes
There are limitations used time.
The content of the invention
It is an object of the invention to overcome disadvantage mentioned above, there is provided a kind of helical bellows with supporting rib stiffener structure and
Its manufacture method, the bellows are provided with and reinforcement are provided between supporting layer and the summit of the big crest of supporting layer and the small crest of supporting layer
Bar, the mechanics triangle relation of firm stable is formed, compressive property, anti-damage performance and the ring for not only greatly improving bellows are firm
Degree, and outer layer crest can be transferred to internal layer when by external force by the big crest of supporting layer, strengthening rib strip and the small crest of supporting layer,
Effectively dissolve external force, protect pipeline, cladding of this outer support layer through internal layer and outer layer so that concentration that tubing is unstressed
Point, each position uniform force, greatly extends service life, the manufacture method not only process stabilizing, it is simple to operate, production speed
Degree is fast, and heat seal strength is high, steady quality.
What the present invention was realized in：
Scheme (one)：
A kind of helical bellows with supporting rib stiffener structure, it is characterised in that：The bellows include outer layer, internal layer with
And the supporting layer between outer layer and internal layer is arranged at, the outer layer and supporting layer collectively constitute peak structure and trough structure is alternate
And along the shape of bellows axial direction setting in spiral distribution, the internal layer is cylindrical shape, the peak structure includes outer layer
Crest, be sticked the support for being fixedly connected on the big crest of supporting layer of outer layer crest inner surface and being sheathed in the big crest of supporting layer
The small crest of layer, gap, the peak structure are left between the big crest inner surface of the supporting layer and the small crest outer surface of supporting layer
Also include being connected between the big crest summit of supporting layer and supporting layer small echo peak maximum and positioned at the big crest inner surface of supporting layer and
The strengthening rib strip in gap between the small crest outer surface of supporting layer, the inner surface of the trough structure and the outer surface of internal layer are consolidated
Fixed connection.
Preferably, the internal layer is adjacent into cylindrical shape, strip sheet material base using strip sheet material base spiral winding
The lap on side mutually it is melting adhered together.
Preferably, the trough structure includes outer layer trough, and the inner surface of the outer layer trough and the outer surface of internal layer are consolidated
It is fixed to connect, a helical form cavity is surrounded between inner layer outer surface and outer layer the crest inner surface, the peak structure also wraps
Include the connection wall being connected between the big crest of supporting layer and supporting layer small echo peak base end both sides, the inner surface of the connection wall
It is fixedly connected with the outer surface of internal layer, supporting layer big crest, the small crest of supporting layer, connection wall and the strengthening rib strip are respectively positioned on spiral shell
Revolve in shape cavity.
Preferably, the support reinforcing layer is formed using linear section bar one in inner layer outer surface spiral winding, described straight
Linear section bar one is double-walled construction, and the linear section bar one includes inwall one and superposition is fixedly connected on the outer surface of inwall one
Outer wall one, in the section of the inwall one is connected to by the big crest of an inwall, the small crest of an inwall and two
Inwall connection wall composition between the big crest of wall and inwall small echo peak base end both sides, the strengthening rib strip are to be connected to the big ripple of inwall
Yi word pattern connection wall between peak and inwall small echo peak maximum, the section of the outer wall one by the big crest of an outer wall, one it is outer
The small crest of wall and two outer wall connection wall compositions being connected between the big crest of outer wall and outer wall small echo peak base end both sides.
Preferably, the trough structure includes outer layer trough, the support being connected between two big crests of adjacent supports layer
The small trough of layer and the big trough of supporting layer being connected between two small crests of adjacent supports layer, the outer layer trough inner surface and
The small trough outer surface of supporting layer is fixedly connected, and the small trough inner surface of the supporting layer and the big trough outer surface of supporting layer are fixed and connected
Connect, the big trough inner surface of supporting layer is fixedly connected with inner layer outer surface.
Preferably, the supporting layer is formed using linear section bar two in inner layer outer surface spiral winding, the linear
The section of section bar two is connected to trough structure both sides and symmetrical half of crest knot by a trough structure and two
Structure forms, and the half of peak structure includes half of big crest, half of small crest and is connected to half of big crest and half of small echo
Connection strap composition between peak maximum, by spiral winding, latter two adjacent connection strap is mutually bonded and formed the strengthening rib strip.
Preferably, the linear section bar two is double-walled construction, and the linear section bar two includes outer wall two and superposition
The inwall two being fixedly connected on the inner surface of outer wall two.
Preferably, the outer layer, internal layer and outer wall two are polyethylene layer or polypropylene layer, and the inwall two is using bending bullet
Property modulus be more than 2500Mpa modified poly ethylene layer or modified polypropene layer, the vicat softening temperature of the inwall two compares outer wall
2nd, outer layer and internal layer are high more than 20 DEG C.
Scheme (two)：
A kind of manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method include with
Lower step：
1. the material for making internal layer is melted, and it is molded in a mold, forms strip sheet material base, then will be long
Bar shaped sheet material base spiral winding is into cylindrical shape, and the rim portion for making strip sheet material base adjacent overlaps, then to phase
The lap of adjacent side carries out melting adhered, formation internal layer；
2. when carrying out step 1., while the material for making supporting layer is melted, and linear is extruded in a mold
Section bar one, linear section bar one is then bent into curl, form supporting layer；
3. support is laminated on internal layer melting adhered with internal layer progress；
4. the material for making outer layer is melted, and it is molded in a mold, forms strip sheet material base, completes to walk
Suddenly 3. after, strip sheet material base spiral is adhered to supporting layer outer surface and inner layer outer surface, strip sheet material base is adjacent
The lap on side mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
Preferably, the temperature of step 1. middle melting is 180 DEG C~250 DEG C, and strip sheet material base spiral winding is into cylinder
Circle tube inner wall two is cooled and solidified after shape and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；
The temperature of step 2. middle melting is 180 DEG C~250 DEG C, also including by temperature of the material at 70 DEG C~100 DEG C before melting
The step of baking material is carried out under degree, the baking time is not less than 20min, and 50 DEG C are placed on after extruding linear section bar one in a mold
It is cooled and shaped under~80 DEG C of cooling water temperature, under -0.015MPa~-0.05MPa vacuum pressure, is led to after cooling and shaping
Cross hauling machine at the uniform velocity, continuously to pull out the linear section bar one after cooling with 1.5m/min~15m/min speed, lead
Preheated after extracting, make the surface temperature control of linear section bar one at 120 DEG C~160 DEG C；
Step 3. in by support be laminated on internal layer before be first preheated to more than 130 DEG C again to supporting layer；
Step 4. middle melting temperature be 180 DEG C~250 DEG C.
Scheme (three)：
A kind of manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method include with
Lower step：
1. the material for making internal layer is melted, and it is molded in a mold, Formation cross-section is the strip sheet of rhombus
Material base, then by strip sheet material base spiral winding into cylindrical shape, the side for making strip sheet material base adjacent is mutually overlapped on
Together, melting adhered, formation internal layer then is carried out to the lap of adjacent edge；
2. when carrying out step 1., while the material for making supporting layer is melted, using two wall co-extrusions in a mold
Linear section bar two is extruded, linear section bar two is then bent into curl, by two adjacent half of peak structures
Connection strap is bonded to each other with viscose glue, forms supporting layer；
3. support is laminated on internal layer melting adhered with internal layer progress；
4. the material for making outer layer is melted, and it is molded in a mold, forms strip sheet material base, completes to walk
Suddenly 3. after, strip sheet material base spiral is adhered to supporting layer outer surface, the lap of strip sheet material base adjacent edge
Mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
Preferably, the temperature of step 1. middle melting is 180 DEG C~250 DEG C, and strip sheet material base spiral winding is into cylinder
Circle tube inner wall two is cooled and solidified after shape and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；
The temperature of step 2. middle melting is 180 DEG C~250 DEG C, also including by temperature of the material at 70 DEG C~100 DEG C before melting
The step of baking material is carried out under degree, the baking time is not less than 20min, and 50 DEG C are placed on after extruding linear section bar two in a mold
It is cooled and shaped under~80 DEG C of cooling water temperature, under -0.015MPa~-0.05MPa vacuum pressure, is led to after cooling and shaping
Cross hauling machine at the uniform velocity, continuously to pull out the linear section bar two after cooling with 1.5m/min~15m/min speed, lead
Preheated after extracting, make the surface temperature control of linear section bar two at 120 DEG C~160 DEG C；
Step 3. in by support be laminated on internal layer before first supporting layer is preheated again, keep the temperature at 130 DEG C
More than~160 DEG C；
Step 4. middle melting temperature be 180 DEG C~250 DEG C.
For prior art, the present invention has advantages below：
(1) helical bellows and its manufacture method provided by the invention with supporting rib stiffener structure, the bellows are set
Have and strengthening rib strip is provided between supporting layer and the summit of the big crest of supporting layer and the small crest of supporting layer, form the mechanics of firm stable
Triangle relation, compressive property, anti-damage performance and the ring stiffness of bellows are not only greatly improved, and outer layer crest is by outer
Internal layer can be transferred to by the big crest of supporting layer, strengthening rib strip and the small crest of supporting layer during power, effectively dissolve external force, protected
Pipeline, cladding of this outer support layer through internal layer and outer layer so that tubing is unstressed centrostigma, each position uniform force, greatly
Ground extends service life, the manufacture method not only process stabilizing, simple to operate, speed of production is fast, and heat seal strength is high, matter
Amount is stable；
(2) helical bellows provided by the invention with supporting rib stiffener structure, supporting layer use double-walled construction, make outer
Wall can use the material of good toughness, and softening temperature is relatively low, is thermally bonded in advance when advantageously combined, improve adhesion strength, interior
Wall can use the high material of intensity, further enhancing the intensity of bellows；
(3) helical bellows provided by the invention with supporting rib stiffener structure, each layer are using compatibility good
Material, and it is compound through high-temperature fusion, it is ensured that and each layer is compound good, tubing is had good structural behaviour, service life length；
(4) helical bellows provided by the invention with supporting rib stiffener structure, inwall two use intensity and heat resistance
Excellent is material modified, and the material modified modulus of elasticity in static bending is more than 2500Mpa (compared to outer wall two, layer materials mould
Measure high more than 1200Mpa), vicat softening temperature is high more than 20 DEG C compared with outer wall two and layer materials, it is ensured that heated multiple
During conjunction, outer wall two, ectonexine are indeformable in inwall after by thermal softening two, so that it is guaranteed that enough combined strength binations；
(5) helical bellows provided by the invention with supporting rib stiffener structure, outer layer use the poly- second of good-toughness
Alkene layer or polypropylene, make tubing have good shock resistance, and internal layer uses the polyethylene layer or polypropylene of good-toughness, made
Tubing has excellent resistance to low temperature；
(6) helical bellows provided by the invention with supporting rib stiffener structure, ring stiffness is up to 16kN/m2More than,
And even if the big crest layer of supporting layer damages in supporting layer, the also protection of the small crest layer of strengthening rib strip and supporting layer, ripple
Pipe still can be with normal use；
(7) helical bellows provided by the invention with supporting rib stiffener structure, its advantage are current other structures institutes
Do not possess, if steel band class multiple tube is mainly by steel strip reinforced, plastic layer simply plays a work for protecting steel band not to be corroded
With, but some serious problems so be present, such as, the consistency problem of steel modeling, the time has been grown by expanding with heat and contract with cold, both meetings point
Layer；Simultaneously as steel is with modeling, both mechanical property difference is very big, causes serious internal stress be present, in the course of time, will
Tubing is caused to ftracture；
(8) manufacture method of the helical bellows provided by the invention with supporting rib stiffener structure, internal layer use strip
Shape sheet material base spiral winding into cylindrical shape, the lap of strip sheet material base adjacent edge mutually it is melting adhered together,
It is advantageously implemented skinny device and does big pipe, reduce equipment investment, simplifies equipment；
(9) manufacture method of the helical bellows provided by the invention with supporting rib stiffener structure, class is moulded compared to steel
Multiple tube, because steel and the difference of modeling are very big, cause the pretreatment process of steel band complicated, influence the speed of production of tubing, the system
The speed for making method is more than 3 times of steel modeling class multiple tube；
(10) helical bellows provided by the invention with supporting rib stiffener structure, ingenious in design, performance is reliable,
With wide market prospects.
Brief description of the drawings
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings：
Fig. 1 is the three dimensional structure diagram for the helical bellows that the present invention has supporting rib stiffener structure；
Fig. 2 is the structural representation for the helical bellows embodiment 1 that the present invention has supporting rib stiffener structure；
Fig. 3 is the close-up schematic view of A in Fig. 2；
Fig. 4 is the three dimensional structure diagram of linear section bar one；
Fig. 5 is the sectional drawing of linear section bar one；
Fig. 6 is the structural representation for the helical bellows embodiment 2 that the present invention has supporting rib stiffener structure；
Fig. 7 is the close-up schematic view of B in Fig. 6；
Fig. 8 is the three dimensional structure diagram of linear section bar two；
Fig. 9 is the sectional drawing of linear section bar two.
Symbol description in figure：1st, outer layer, 11, outer layer crest, 12, outer layer trough, 2, internal layer, 3, supporting layer, 31, supporting layer
Big crest, 32, the small crest of supporting layer, 33, connection wall, 34, strengthening rib strip, 35, linear section bar one, 351, inwall one, 3511,
The big crest of inwall, 3512, the small crest of inwall, 3513, inwall connection wall, 352, outer wall one, 3521, the big crest of outer wall, 3522, outer
The small crest of wall, 3523, outer wall connection wall, 36, the small trough of supporting layer, 37, the big trough of supporting layer, 38, linear section bar two, 381,
Half of peak structure, 3811, half of big crest, 3812, half of small crest, 3813, connection strap, 382, outer wall two, 383, inwall
Two.
Embodiment
Present invention is described in detail with reference to Figure of description and specific embodiment：
Embodiment 1：
It is a kind of helical bellows with supporting rib stiffener structure provided by the invention as Figure 1-5, its feature exists
In：The bellows includes outer layer 1, internal layer 2 and the supporting layer 3 being arranged between outer layer 1 and internal layer 2, the outer layer 1 and support
Layer 3 collectively constitutes peak structure and trough structure is alternate and along the shape of bellows axial direction setting in spiral distribution, described
Internal layer 2 is cylindrical shape, and the peak structure includes outer layer crest 11, being sticked is fixedly connected on the support of the inner surface of outer layer crest 11
The big crest 31 of layer and the small crest 32 of supporting layer being sheathed in the big crest 31 of supporting layer, the big inner surface of crest 31 of supporting layer
Gap is left between the small outer surface of crest 32 of supporting layer, the peak structure also includes being connected to the big summit of crest 31 of supporting layer
Between the small summit of crest 32 of supporting layer and between the big inner surface of crest 31 of supporting layer and the small outer surface of crest 32 of supporting layer
Gap in strengthening rib strip 34, the inner surface of the trough structure is fixedly connected with the outer surface of internal layer 2.
Preferably, the internal layer 2 is adjacent into cylindrical shape, strip sheet material base using strip sheet material base spiral winding
The lap on side mutually it is melting adhered together.
As shown in figure 3, the trough structure includes outer layer trough 12, the inner surface of the outer layer trough 12 and internal layer 2
Outer surface is fixedly connected, and a helical form cavity, the ripple are surrounded between the outer surface of internal layer 2 and the inner surface of outer layer crest 11
Peak structure also includes the connection wall 33 being connected between the big crest 31 of supporting layer and the small bottom both sides of crest 32 of supporting layer, institute
The inner surface for stating connection wall 33 is fixedly connected with the outer surface of internal layer 2, the big crest 31 of the supporting layer, the small crest 32 of supporting layer,
Connection wall 33 and strengthening rib strip 34 are respectively positioned in helical form cavity.
As shown in Figure 4, Figure 5, the support reinforcing layer 3 uses linear section bar 1 in the outer surface spiral winding of internal layer 2
Form, the linear section bar 1 is double-walled construction, and the linear section bar 1 includes inwall 1 and superposition is fixed
It is connected to the outer wall 1 of the outer surface of inwall 1, the section of the inwall 1 is by 3511, one, the big crest of an inwall
The small crest 3512 of inwall and two are connected between the big crest 3511 of inwall and the small bottom both sides of crest 3512 of inwall
Inwall connection wall 3513 forms, the strengthening rib strip 34 for be connected to the big crest 3511 of inwall and the small summit of crest 3512 of inwall it
Between yi word pattern connection wall, the section of the outer wall 1 by 3521, small crests 3522 of outer wall of the big crest of an outer wall with
And two 3523 groups of outer wall connection walls being connected between the big crest 3521 of outer wall and the small bottom both sides of crest 3522 of outer wall
Into.
A kind of manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method include with
Lower step：
1. the material for making internal layer 2 is melted, and it is molded in a mold, forms strip sheet material base, then will
Into cylindrical shape, the rim portion for making strip sheet material base adjacent overlaps strip sheet material base spiral winding, then right
The lap of adjacent edge carries out melting adhered, formation internal layer 2；
2. when carrying out step 1., while the material for making supporting layer 3 is melted, and linear is extruded in a mold
Section bar 1, linear section bar 1 is then bent into curl, form supporting layer 3；
3. supporting layer 3 is pressed on internal layer 2 carried out with internal layer 2 it is melting adhered；
4. the material for making outer layer 1 is melted, and it is molded in a mold, forms strip sheet material base, complete
Step 3. after, strip sheet material base spiral is adhered to the outer surface of supporting layer 3 and the outer surface of internal layer 2, strip sheet material base
The lap of adjacent edge mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
Preferably, the temperature of step 1. middle melting is 180 DEG C~250 DEG C, and strip sheet material base spiral winding is into cylinder
Circle tube inner wall two is cooled and solidified after shape and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；
The temperature of step 2. middle melting is 180 DEG C~250 DEG C, also including by temperature of the material at 70 DEG C~100 DEG C before melting
The step of baking material is carried out under degree, the baking time is not less than 20min, and 50 are placed on after extruding linear section bar 1 in a mold
DEG C~80 DEG C of cooling water temperature under, be cooled and shaped under -0.015MPa~-0.05MPa vacuum pressure, after cooling and shaping
The linear section bar 1 after cooling at the uniform velocity, is continuously pulled out with 1.5m/min~15m/min speed by hauling machine
Come, preheated after pulling out, make the surface temperature control of linear section bar 1 at 120 DEG C~160 DEG C；
Step 3. in by supporting layer 3 be pressed on internal layer 2 before more than 130 DEG C are first preheated to again to supporting layer 3；
Step 4. middle melting temperature be 180 DEG C~250 DEG C.
Embodiment 2：
It is a kind of helical bellows with supporting rib stiffener structure provided by the invention as Figure 6-9, its feature exists
In：The bellows includes outer layer 1, internal layer 2 and the supporting layer 3 being arranged between outer layer 1 and internal layer 2, the outer layer 1 and support
Layer 3 collectively constitutes peak structure and trough structure is alternate and along the shape of bellows axial direction setting in spiral distribution, described
Internal layer 2 is cylindrical shape, and the peak structure is big including outer layer crest 11, the supporting layer being fixedly connected with the inner surface of outer layer crest 11
Crest 31 and the small crest 32 of supporting layer being sheathed in the big crest 31 of supporting layer, the big inner surface of crest 31 of the supporting layer and branch
Gap is left between the small outer surface of crest 32 of support layer, the peak structure also includes being connected to the big summit of crest 31 of supporting layer and branch
Between the small summit of crest 32 of the support layer and gap between the big inner surface of crest 31 of supporting layer and the small outer surface of crest 32 of supporting layer
Interior strengthening rib strip 34, the inner surface of the trough structure are fixedly connected with the outer surface of internal layer 2.
Preferably, the internal layer 2 is adjacent into cylindrical shape, strip sheet material base using strip sheet material base spiral winding
The lap on side mutually it is melting adhered together.
As shown in fig. 7, the trough structure includes outer layer trough 12, is connected between the big crest 31 of two adjacent supports layers
The small trough 36 of supporting layer and the big trough 37 of supporting layer that is connected between the small crest 32 of two adjacent supports layers, the outer layer
The inner surface of trough 12 outer surface of trough 36 small with supporting layer is fixedly connected, and the small inner surface of trough 36 of the supporting layer and supporting layer are big
The outer surface of trough 37 is fixedly connected, and the big inner surface of trough 37 of supporting layer is fixedly connected with the outer surface of internal layer 2.
As shown in Figure 8, Figure 9, the supporting layer 3 is formed using linear section bar 2 38 in the outer surface spiral winding of internal layer 2,
The section of the linear section bar 2 38 by a trough structure and two be connected to trough structure both sides and symmetrically
Half of peak structure 381 form, the half of peak structure 381 includes half of big crest 3811, the half of small and of crest 3812
The connection strap 3813 being connected between half of big crest 3811 and the half of small summit of crest 3812 forms, the strengthening rib strip 34 by
Latter two the adjacent phase of connection strap 3813 bonding composition of spiral winding.
As shown in Figure 8, Figure 9, the linear section bar 2 38 is double-walled construction, and the linear section bar 2 38 includes outer wall
2 382 and superposition be fixedly connected on inwall 2 383 on the inner surface of outer wall two, the outer layer 1, internal layer 3 and outer wall 2 382 are
Polyethylene layer or polypropylene layer, the inwall 2 383 is using modified poly ethylene layer of the modulus of elasticity in static bending more than 2500Mpa or changes
Property polypropylene layer, the vicat softening temperature of the inwall 2 383 are higher more than 20 DEG C than outer wall 2 382, outer layer 1 and internal layer 3.
A kind of manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method include with
Lower step：
1. the material for making internal layer 2 is melted, and it is molded in a mold, Formation cross-section is the strip sheet of rhombus
Material base, then by strip sheet material base spiral winding into cylindrical shape, the side for making strip sheet material base adjacent is mutually overlapped on
Together, melting adhered, formation internal layer 2 then is carried out to the lap of adjacent edge；
2. when carrying out step 1., while the material for making supporting layer 3 is melted, using two wall co-extrusions in a mold
Linear section bar 2 38 is extruded, linear section bar 2 38 is then bent into curl, by two adjacent half of peak structures
Connection strap 3813 in 381 is bonded to each other with viscose glue, forms supporting layer 3；
3. supporting layer 3 is pressed on internal layer 2 carried out with internal layer 2 it is melting adhered；
4. the material for making outer layer 1 is melted, and it is molded in a mold, forms strip sheet material base, complete
Step 3. after, strip sheet material base spiral is adhered to the outer surface of supporting layer 3, the overlapping portion of strip sheet material base adjacent edge
Split-phase mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
Preferably, the temperature of step 1. middle melting is 180 DEG C~250 DEG C, and strip sheet material base spiral winding is into cylinder
Circle tube inner wall two is cooled and solidified after shape and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；
The temperature of step 2. middle melting is 180 DEG C~250 DEG C, also including by temperature of the material at 70 DEG C~100 DEG C before melting
The step of baking material is carried out under degree, the baking time is not less than 20min, and 50 are placed on after extruding linear section bar 2 38 in a mold
DEG C~80 DEG C of cooling water temperature under, be cooled and shaped under -0.015MPa~-0.05MPa vacuum pressure, after cooling and shaping
The linear section bar 2 38 after cooling at the uniform velocity, is continuously pulled out with 1.5m/min~15m/min speed by hauling machine
Come, preheated after pulling out, make the surface temperature control of linear section bar 2 38 at 120 DEG C~160 DEG C；
Step 3. in by supporting layer 3 be pressed on internal layer 2 before first supporting layer 3 is preheated again, keep the temperature at 130
DEG C~more than 160 DEG C；
Step 4. middle melting temperature be 180 DEG C~250 DEG C.
Table 1：The present invention has the helical bellows of supporting rib stiffener structure and the main performance contrast table of existing tubing
From table 1 it follows that the bellows of the present invention, ring stiffness, impact property, ring flexibility and tensile strength, stripping
Intensity and tubing weight are substantially better than existing tubing.
Simply technical scheme is explained in detail for above-mentioned embodiment, the present invention not only only office
It is limited to above-described embodiment, every any improvement or replacement according to the principle of the invention all should be within protection scope of the present invention.
Claims (12)
- A kind of 1. helical bellows with supporting rib stiffener structure, it is characterised in that：The bellows includes outer layer (1), internal layer (2) and the supporting layer (3) that is arranged between outer layer (1) and internal layer (2), the outer layer (1) and supporting layer (3) collectively constitute ripple Peak structure and trough structure are alternate and be cylinder along the shape of bellows axial direction setting in spiral distribution, the internal layer (2) Shape, the peak structure includes outer layer crest (11), being sticked is fixedly connected on the big ripple of supporting layer of outer layer crest (11) inner surface Peak (31) and the small crest of supporting layer (32) being sheathed in the big crest of supporting layer (31), the interior table of the big crest of supporting layer (31) Gap is left between face and the small crest of supporting layer (32) outer surface, the peak structure also includes being connected to the big crest of supporting layer (31) between summit and the small crest of supporting layer (32) summit and it is located at the big crest of supporting layer (31) inner surface and the small crest of supporting layer (32) strengthening rib strip in the gap between outer surface (34), the inner surface of the trough structure and the outer surface of internal layer (2) are consolidated Fixed connection.
- 2. the helical bellows according to claim 1 with supporting rib stiffener structure, it is characterised in that：The internal layer (2) mutually melted into cylindrical shape, the lap of strip sheet material base adjacent edge using strip sheet material base spiral winding Bond together.
- 3. the helical bellows according to claim 1 or 2 with supporting rib stiffener structure, it is characterised in that：The ripple Paddy structure includes outer layer trough (12), and the inner surface of the outer layer trough (12) is fixedly connected with the outer surface of internal layer (2)；It is described A helical form cavity is surrounded between internal layer (2) outer surface and outer layer crest (11) inner surface；The peak structure also includes dividing The connection wall (33) not being connected between the big crest of supporting layer (31) and the small crest of supporting layer (32) bottom both sides, the connection wall (33) inner surface is fixedly connected with the outer surface of internal layer (2), the big crest of supporting layer (31), the small crest of supporting layer (32), Connection wall (33) and strengthening rib strip (34) are respectively positioned in helical form cavity.
- 4. the helical bellows according to claim 3 with supporting rib stiffener structure, it is characterised in that：The support adds Strong layer (3) is formed using linear section bar one (35) in internal layer (2) outer surface spiral winding, and the linear section bar one (35) is Double-walled construction, the linear section bar one (35) includes inwall one (351) and superposition is fixedly connected on inwall one (351) appearance The outer wall one (352) in face, the section of the inwall one (351) is by a big crest of inwall (3511), a small crest of inwall And two inwalls being connected between the big crest of inwall (3511) and the small crest of inwall (3512) bottom both sides (3512) Connection wall (3513) is formed, and the strengthening rib strip (34) is pushed up to be connected to the big crest of inwall (3511) and the small crest of inwall (3512) Yi word pattern connection wall between point, the section of the outer wall one (352) is by a big crest of outer wall (3521), an outer wall small echo Peak (3522) and two are connected to outer between the big crest of outer wall (3521) and the small crest of outer wall (3522) bottom both sides Wall connection wall (3523) forms.
- 5. the helical bellows according to claim 1 or 2 with supporting rib stiffener structure, it is characterised in that：The ripple Paddy structure include outer layer trough (12), the small trough of supporting layer (36) that is connected between two big crests of adjacent supports layer (31) with And the big trough of supporting layer (37) between two small crests of adjacent supports layer (32) is connected to, outer layer trough (12) inner surface It is fixedly connected with the small trough of supporting layer (36) outer surface, the small trough of supporting layer (36) inner surface and the big trough of supporting layer (37) Outer surface is fixedly connected, and the big trough of supporting layer (37) inner surface is fixedly connected with internal layer (2) outer surface.
- 6. the helical bellows according to claim 5 with supporting rib stiffener structure, it is characterised in that：The supporting layer (3) formed using linear section bar two (38) in internal layer (2) outer surface spiral winding, the section of the linear section bar two (38) Trough structure both sides are connected to by a trough structure and two and symmetrical half of peak structure (381) forms, The half of peak structure (381) includes half of big crest (3811), half of small crest (3812) and is connected to half of big crest (3811) connection strap (3813) composition between half of small crest (3812) summit, the strengthening rib strip (34) is by spiral winding Latter two adjacent connection strap (3813) is mutually bonded composition.
- 7. the helical bellows according to claim 6 with supporting rib stiffener structure, it is characterised in that：The linear Section bar two (38) is double-walled construction, and the linear section bar two (38) is fixedly connected on outer including outer wall two (382) and superposition Inwall two (383) on the inner surface of wall two.
- 8. the helical bellows according to claim 7 with supporting rib stiffener structure, it is characterised in that：The outer layer (1), internal layer (3) and outer wall two (382) are polyethylene layer or polypropylene layer, and the inwall two (383) uses the modulus of elasticity in static bending Modified poly ethylene layer or modified polypropene layer more than 2500Mpa, the vicat softening temperature of the inwall two (383) is than outer wall two (382), outer layer (1) and internal layer (3) are high more than 20 DEG C.
- A kind of 9. manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method includes following Step：1. the material for making internal layer (2) is melted, and it is molded in a mold, forms strip sheet material base, then will be long Bar shaped sheet material base spiral winding is into cylindrical shape, and the rim portion for making strip sheet material base adjacent overlaps, then to phase The lap of adjacent side carries out melting adhered, formation internal layer (2)；2. when carrying out step 1., while the material for making supporting layer (3) is melted, squeezed in a mold using two wall co-extrusions Go out linear section bar one (35), linear section bar one (35) is then bent into curl, form supporting layer (3)；3. supporting layer (3) is pressed on internal layer (2) melting adhered with internal layer (2) progress；4. the material for making outer layer (1) is melted, and it is molded in a mold, forms strip sheet material base, completes to walk Suddenly 3. after, strip sheet material base spiral is adhered to supporting layer (3) outer surface and internal layer (2) outer surface, strip sheet material The lap of base adjacent edge mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
- 10. manufacture method according to claim 9, it is characterised in that：The temperature of step 1. middle melting is 180 DEG C~250 DEG C, strip sheet material base spiral winding into after cylindrical shape to cylindrical shape Inwall two is cooled and solidified and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；Step 2. middle melting temperature be 180 DEG C~250 DEG C, melting before also including by material at a temperature of 70 DEG C~100 DEG C The step of carrying out baking material, baking time are not less than 20min, and 50 DEG C are placed on after extruding linear section bar one (35) in a mold It is cooled and shaped under~80 DEG C of cooling water temperature, under -0.015MPa~-0.05MPa vacuum pressure, is led to after cooling and shaping Hauling machine is crossed at the uniform velocity, continuously to pull out the linear section bar one (35) after cooling with 1.5m/min~15m/min speed Come, preheated after pulling out, make the surface temperature control of linear section bar one (35) at 120 DEG C~160 DEG C；Step 3. in by supporting layer (3) be pressed on internal layer (2) before more than 130 DEG C are first preheated to again to supporting layer (3)；Step 4. middle melting temperature be 180 DEG C~250 DEG C.
- A kind of 11. manufacture method of the helical bellows with supporting rib stiffener structure, it is characterised in that：This method includes following Step：1. the material for making internal layer (2) is melted, and it is molded in a mold, Formation cross-section is the strip sheet material of rhombus Base, then by strip sheet material base spiral winding into cylindrical shape, the side for making strip sheet material base adjacent is mutually overlapped on one Rise, melting adhered, formation internal layer (2) then is carried out to the lap of adjacent edge；2. when carrying out step 1., while the material for making supporting layer (3) is melted, squeezed in a mold using two wall co-extrusions Go out linear section bar two (38), linear section bar two (38) is then bent into curl, by two adjacent half of crest knots Connection strap (3813) in structure (381) is bonded to each other with viscose glue, forms supporting layer (3)；3. supporting layer (3) is pressed on internal layer (2) melting adhered with internal layer (2) progress；4. the material for making outer layer (1) is melted, and it is molded in a mold, forms strip sheet material base, completes to walk Suddenly 3. after, strip sheet material base spiral is adhered to supporting layer (3) outer surface, the overlapping portion of strip sheet material base adjacent edge Split-phase mutually it is melting adhered together, ultimately form the helical bellows with supporting rib stiffener structure.
- 12. manufacture method according to claim 11, it is characterised in that：The temperature of step 1. middle melting is 180 DEG C~250 DEG C, strip sheet material base spiral winding into after cylindrical shape to cylindrical shape Inwall two is cooled and solidified and by the temperature control of cylindrical outer wall two at 170 DEG C~230 DEG C；Step 2. middle melting temperature be 180 DEG C~250 DEG C, melting before also including by material at a temperature of 70 DEG C~100 DEG C The step of carrying out baking material, baking time are not less than 20min, and 50 DEG C are placed on after extruding linear section bar two (38) in a mold It is cooled and shaped under~80 DEG C of cooling water temperature, under -0.015MPa~-0.05MPa vacuum pressure, is led to after cooling and shaping Hauling machine is crossed at the uniform velocity, continuously to pull out the linear section bar two (38) after cooling with 1.5m/min~15m/min speed Come, preheated after pulling out, make the surface temperature control of linear section bar two (38) at 120 DEG C~160 DEG C；Step 3. in by supporting layer (3) be pressed on internal layer (2) before first supporting layer (3) is preheated again, keep the temperature at 130 DEG C~more than 160 DEG C；Step 4. middle melting temperature be 180 DEG C~250 DEG C.
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| CN109140059A (en) * | 2018-10-29 | 2019-01-04 | 康命源（贵州）科技发展有限公司 | Hollow wall tubing and its manufacturing method |
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| CN110185852A (en) * | 2019-06-25 | 2019-08-30 | 萍乡市大地新材料科技有限公司 | Hot winding dual waves enhancing helical bellows and its manufacturing method |
| CN111688174A (en) * | 2020-06-17 | 2020-09-22 | 姜冲 | HDPE double-plastic double-composite winding reinforced pipe processing technology and product thereof |
| CN113431961A (en) * | 2021-05-24 | 2021-09-24 | 黄宝明 | Double-wall HDPE corrugated pipe with inner support reinforced framework |
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