CN103522472B - Inner liner polyurethane spherical elbow mould - Google Patents
Inner liner polyurethane spherical elbow mould Download PDFInfo
- Publication number
- CN103522472B CN103522472B CN201310460887.8A CN201310460887A CN103522472B CN 103522472 B CN103522472 B CN 103522472B CN 201310460887 A CN201310460887 A CN 201310460887A CN 103522472 B CN103522472 B CN 103522472B
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- Prior art keywords
- core rod
- elbow
- core
- mould
- die cap
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- Expired - Fee Related
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- 229920002635 polyurethane Polymers 0.000 title claims abstract description 31
- 239000004814 polyurethane Substances 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000000284 extract Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a kind of inner liner polyurethane spherical elbow mould, comprise inner mould core, outer core rod and epimere core rod, the first die cap, the second die cap, the first side cover, the second side cover, card key, wherein inner mould core, outer core rod and epimere core rod insert respectively and form a mold integral after serving as a contrast elbow, form a cavity between its outer surface and elbow inner surface, this cavity width is everywhere all equal; The both sides of the first die cap offer the sprue gate and steam vent that communicate with above-mentioned cavity respectively, the polyurethane of molten state injects cavity from plug hole, be vented when steam vent is for pouring into a mould, after the polyurethane cooling forming injected, after removing the first side cover, the second side cover, the first die cap, the second die cap, first lift-pull handle extracts inner mould core out, then takes out piecemeal core rod and epimere core rod respectively.The present invention has that structure is simple, accurate location, the form removal of mould in elbow internal cavities is installed and the feature such as to be convenient in demoulding.
Description
Technical field
The present invention relates to a kind of liner polyurethane elbow forming die, particularly relate to a kind of inner liner polyurethane spherical elbow mould.
Background technology
In pulp conveying pipe-line system, due to the slip containing solid-phase material in carried medium, owing to needing the frequent impact of bearing slip, corrosion-resistant, the resistance to impact of the crooked position internal face of 90 ° of elbows determine the service life of elbow.
For improving the service life of elbow in pulp conveying pipe-line system, conventional solution roughly can be divided three classes:
One, changes the geometry of elbow crooked position, slows down slip as far as possible by flow velocity time herein, and then reduces the wearing and tearing at this place, extend the service life of elbow; Consider the saving of material and alleviating of weight, there is significant limitation in this method, seldom adopts at present.
Its two, adopt liner lining to carry out reinforcement solutions, liner material is varied, and this uses the most general method at present.
It three is the combination of above-mentioned two class methods, namely sets about from the geometry and liner reinforcement two aspect that change elbow crooked position, to reach the object extending elbow service life.
As shown in Figure 1, Chinese patent application CN1415888A discloses a kind of wearing-resistant lining pipe elbow and lining method, and its liner shape facility is that the wear resistance lining of elbow thickeies inside the arch portion of elbow, and both sides are thinning gradually.The liner material adopted is polyurethane rubber.This invention, by above-mentioned technological means, improves the wearability at elbow position the most easy to wear relatively, and then extends the whole service life of elbow.Its liner lining method, adopt again the non-circular shaft being fixed with in elbow endoporus and arch portion medial gap can be made to strengthen gradually to composite core formwork, in by the circumference that formed between lining elbow interior wall and the core broad gap such as or not form backing layer by cast or pressure injection mode.
The mould of technique scheme, location complexity is installed in existence, opportunity is held difficulty large shortcoming in the demoulding.Premature release, affects lining quality; The demoulding is delayed for opportunity, then cause demoulding difficulty.
Summary of the invention
The object of the invention is, for swiftly flowing ore pulp delivery duct elbow applying working condition, provide that a kind of structure is simple, form removal and the inner liner polyurethane spherical elbow mould that is convenient in demoulding.
The present invention for achieving the above object technical issues that need to address is, mould is in the easy technical problem of the assembly and disassembly of the accurate location of waiting during serving as a contrast elbow internal cavities installs and mould.
For convenience of description, as shown in Figure 2, do to give a definition: by the openend called after elbow entrance point in the horizontal direction of the elbow shown in Fig. 2, elbow at the openend called after elbow port of export of vertical direction.
The present invention is the technical scheme solving the problems of the technologies described above employing, a kind of inner liner polyurethane spherical elbow mould, is characterized in that, comprise inner mould core, outer core rod and epimere core rod, the first die cap, the second die cap, the first side cover, the second side cover, card key, wherein:
One end of described inner mould core is welded with a handles, and the other end is cylindrical hollow body, and the end face of described inner mould core is the sphere mated with described elbow, and the radius of curvature of described sphere is less than the radius of curvature of the described elbow crooked position inwall matched; Described inner mould core inserts from the arrival end of described elbow, described inner mould core welds handled one end and is provided with detent, described inner mould core is located by described detent by described card key, and described inner mould core is fixed on described elbow entrance point side by described first side cover;
Described outer core rod is spliced by the piecemeal core rod that connects core rod identical with several shape sizes, and wherein, one end of described connection core rod offers the groove matched with described epimere core rod; One end of described piecemeal core rod is provided with positioning boss, the other end is spherical arc surface, the radius of curvature of described arc surface is less than the radius of curvature of described elbow crooked position inwall, described piecemeal core rod is inserted by the port of export of described elbow, is mutually spliced respectively, then connects into a doughnut-shaped monolithic closed by a connection core rod; Described piecemeal core rod and described connection core rod are fixed on described elbow entrance point respectively by its positioning boss by described second side cover;
Described epimere core rod is a hollow cylindrical tube, its external diameter is less than described elbow port of export diameter, described epimere core rod is inserted by the described elbow port of export and is located by the groove of described connection core rod, and described epimere core rod is fixed on the described elbow port of export by described first die cap and the second die cap;
After described inner mould core, described outer core rod and described epimere core rod are all located, form a mold integral, form a cavity between the outer surface of described mold integral and described elbow inner surface, described cavity width is everywhere all equal;
The both sides of described first die cap offer sprue gate and steam vent respectively, and are connected with described cavity respectively.
After the inner liner polyurethane spherical elbow mould of technique scheme has been assembled, the polyurethane of molten state is injected by the cast through hole that the first die cap is offered, after polyurethane cooling curing is shaping, after removing the first side cover, the second side cover, the first die cap, the second die cap, first lift-pull handle extracts inner mould core out, take out piecemeal core rod and epimere core rod respectively again, the integrated poured shaping of polyurethane liner can be completed.
As preferably, the width of above-mentioned cavity is 5-8mm.
The width of above-mentioned cavity is set as that 5-8mm carries out setting according to predetermined polyurethane lining one-tenth-value thickness 1/10.
As preferably, the quantity of piecemeal core rod is more than 3.
The concrete quantity basis of piecemeal core rod is treated the concrete size of lining elbow and determines, and the main factor considered is the convenience of Assembly And Disassembly.Usually, the quantity of piecemeal core rod is more than 3.
The invention has the beneficial effects as follows, the combination of piecemeal core rod, epimere core rod and inner mould core is adopted to be convenient to assembling, the accurate positioning of mould in elbow internal cavities is installed, and casting complete rear mold is easily taken out from spherical shell, and whole mould is easily processed, be suitable for the integrated poured shaping of spherical elbow liner, the inner liner thickness obtained is even.
Accompanying drawing explanation
Fig. 1 is the elbow bend lining structure schematic diagram of prior art;
Fig. 2 is inner liner polyurethane spherical elbow mould assembly structure generalized section of the present invention;
Fig. 3 is inner liner polyurethane spherical elbow mould package assembly schematic diagram of the present invention;
Fig. 4 is inner liner polyurethane spherical elbow structural representation;
Fig. 5 is the structural representation of inner mould core;
Fig. 6 is the structural representation connecting core rod;
Fig. 7 is piecemeal mold insert structure schematic diagram;
Fig. 8 is the structural representation after outer core rod has been assembled.
Detailed description of the invention
Below in conjunction with accompanying drawing 2-7, the mould of inner liner polyurethane spherical elbow of the present invention is described in detail.
Fig. 2 is inner liner polyurethane spherical elbow mould assembly structure generalized section of the present invention.As shown in Figure 2, inner liner polyurethane spherical elbow mould comprises inner mould core, the both sides of outer core rod and epimere core rod, the first die cap 21, second die cap 22, first side cover 27, second side cover 26, card key 28, first die cap 21 offer sprue gate 25 and steam vent 24 respectively.Inner mould core is fixed on elbow entrance point side by the first side cover 27 and the second side cover 26; Epimere core rod is fixed on the described elbow port of export by the first die cap 21 and the second die cap 22.
Fig. 3 is inner liner polyurethane spherical elbow mould assembly structure schematic diagram of the present invention.As shown in Figure 3, inner mould core 7, outer core rod 8 and epimere core rod 9 insert respectively to be waited serve as a contrast elbow inside and be assembled into a mold integral, and form a cavity between the outer surface of this mold integral and elbow inner surface, this cavity width is everywhere all equal.
Fig. 4 is inner liner polyurethane spherical elbow structural representation.As shown in Figure 4, adopt the spherical elbow after inner liner polyurethane spherical elbow mould moulding by casting of the present invention to include feed pipe 1, discharge nozzle 2, flange 3, polyurethane liner 4 and spherical shell 5, it is identical everywhere that spherical elbow inwall serves as a contrast layer of polyurethane thickness.
Fig. 5 is the structural representation of inner mould core.As shown in Figure 5, one end of inner mould core 7 is welded with a handles 6, and the other end is cylindrical hollow body, and inner mould core welds handled one end and is provided with detent, and the other end of inner mould core 7 is cylindrical hollow body.
Fig. 6 is the structural representation connecting core rod, and the one end connecting core rod 13 is as shown in Figure 6 positioning boss, connects core rod 13 and is provided with the groove matched with epimere core rod.
Fig. 7 is piecemeal mold insert structure schematic diagram, and one end of piecemeal core rod 11 is positioning boss as shown in Figure 7, and the other end is spherical arc surface.
Fig. 8 is the structural representation after outer core rod has been assembled.As shown in Figure 8, the piecemeal core rod 11 that shape size is identical splices successively, then connects into a doughnut-shaped monolithic closed by a connection core rod 13.It should be noted that, the concrete quantity of piecemeal core rod can be determined according to the concrete size treating lining elbow, and major consideration is the convenience of Assembly And Disassembly.Usually, the quantity of piecemeal core rod is more than 3, and in the present embodiment, piecemeal core rod quantity is 7.
Composition graphs 2-Fig. 8, the using method of inner liner polyurethane spherical elbow mould of the present invention is, after set of molds installs into, by the polyurethane of molten state by injecting in plug hole, after polyurethane cooling forming, after removing the first side cover, the second side cover, the first die cap, the second die cap, hold handle on inner mould core one end and inner mould core withdrawing from elbow out, then is taken out epimere core rod successively respectively, connects core rod and several piecemeal core rods.
Claims (3)
1. an inner liner polyurethane spherical elbow mould, is characterized in that, comprises inner mould core, outer core rod and epimere core rod, the first die cap, the second die cap, the first side cover, the second side cover, card key, wherein:
One end of described inner mould core is welded with a handles, and the other end is cylindrical hollow body, and the end face of described inner mould core is the sphere mated with elbow, and the radius of curvature of described sphere is less than the radius of curvature of the described elbow crooked position inwall matched; Described inner mould core inserts from the arrival end of described elbow, described inner mould core welds handled one end and is provided with detent, described inner mould core is located by described detent by described card key, and described inner mould core is fixed on described elbow entrance point side by described first side cover;
Described outer core rod is spliced by the piecemeal core rod that connects core rod identical with several shape sizes, and wherein, one end of described connection core rod offers the groove matched with described epimere core rod; One end of described piecemeal core rod is provided with positioning boss, the other end is spherical arc surface, the radius of curvature of described arc surface is less than the radius of curvature of described elbow crooked position inwall, described piecemeal core rod is inserted by the port of export of described elbow, is mutually spliced respectively, then connects into a doughnut-shaped monolithic closed by a connection core rod; Described piecemeal core rod and described connection core rod are fixed on described elbow entrance point respectively by its positioning boss by described second side cover;
Described epimere core rod is a hollow cylindrical tube, its external diameter is less than described elbow port of export diameter, described epimere core rod is inserted by the described elbow port of export and is located by the groove of described connection core rod, and described epimere core rod is fixed on the port of export of described elbow by described first die cap and the second die cap;
After described inner mould core, described outer core rod and described epimere core rod are all located, form a mold integral, form a cavity between the outer surface of described mold integral and described elbow inner surface, described cavity width is everywhere all equal;
The both sides of described first die cap offer sprue gate respectively and are also connected with described cavity respectively with steam vent.
2. inner liner polyurethane spherical elbow mould according to claim 1, is characterized in that, the width of described cavity is 5-8mm.
3. inner liner polyurethane spherical elbow mould according to claim 1, is characterized in that, the quantity of described piecemeal core rod is more than 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460887.8A CN103522472B (en) | 2013-09-30 | 2013-09-30 | Inner liner polyurethane spherical elbow mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460887.8A CN103522472B (en) | 2013-09-30 | 2013-09-30 | Inner liner polyurethane spherical elbow mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103522472A CN103522472A (en) | 2014-01-22 |
| CN103522472B true CN103522472B (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310460887.8A Expired - Fee Related CN103522472B (en) | 2013-09-30 | 2013-09-30 | Inner liner polyurethane spherical elbow mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103522472B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111497219B (en) * | 2020-06-16 | 2020-09-22 | 山东菲纳科技发展有限公司 | Preparation method of steel pipe elbow lining |
| CN112595122B (en) * | 2020-12-25 | 2022-09-13 | 中化二建集团有限公司 | Casting construction method for flexible air pipeline lining |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364314Y (en) * | 1998-12-31 | 2000-02-16 | 中山环宇实业有限公司 | Bend with lining and pipe having lining |
| CN1415888A (en) * | 2002-10-04 | 2003-05-07 | 宜兴市宙斯泵业有限公司 | Channel elbow with wearable liner and lining method thereof |
| DE202006016383U1 (en) * | 2006-10-20 | 2006-12-28 | Severyns, Horst Willy | Device for injection molding a tubular manifold made from polyvinylidene fluoride comprises axially moving cylinder core parts for connecting supports and a manifold core part sliding along the middle line of the manifold region |
| CN101693388A (en) * | 2009-10-16 | 2010-04-14 | 湖南华菱涟源钢铁有限公司 | Method for casting lining of air-supply apparatus of blast furnace by using lost foam |
| CN201836594U (en) * | 2009-12-22 | 2011-05-18 | 殷成权 | Lining hose for cured-in-place trenchless underground pipe rehabilitation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2830313A1 (en) * | 2001-10-02 | 2003-04-04 | Nobel Plastiques | FLUID TRANSPORT TUBULAR ELEMENT AND MANUFACTURING METHOD |
| CL2007003408A1 (en) * | 2007-11-27 | 2008-04-25 | Vulco Sa | FLEXIBLE DEVICE OR MANDRIL THAT CAN CHANGE ITS CURVATURE RADIUS, TO ADAPT TO THE CURVATURE OF THE ELBOW OR CURVATURE THAT INCLUDES A CYLINDRICAL BODY OF ELASTOMERIC MATERIAL THAT HAS A FLEXIBLE SOUL PLACED IN THE CENTER OF THE CYLINDER, A DI |
-
2013
- 2013-09-30 CN CN201310460887.8A patent/CN103522472B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2364314Y (en) * | 1998-12-31 | 2000-02-16 | 中山环宇实业有限公司 | Bend with lining and pipe having lining |
| CN1415888A (en) * | 2002-10-04 | 2003-05-07 | 宜兴市宙斯泵业有限公司 | Channel elbow with wearable liner and lining method thereof |
| DE202006016383U1 (en) * | 2006-10-20 | 2006-12-28 | Severyns, Horst Willy | Device for injection molding a tubular manifold made from polyvinylidene fluoride comprises axially moving cylinder core parts for connecting supports and a manifold core part sliding along the middle line of the manifold region |
| CN101693388A (en) * | 2009-10-16 | 2010-04-14 | 湖南华菱涟源钢铁有限公司 | Method for casting lining of air-supply apparatus of blast furnace by using lost foam |
| CN201836594U (en) * | 2009-12-22 | 2011-05-18 | 殷成权 | Lining hose for cured-in-place trenchless underground pipe rehabilitation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103522472A (en) | 2014-01-22 |
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Granted publication date: 20151209 |