CN102922723A - Molding pipe split-flow mold - Google Patents
Molding pipe split-flow mold Download PDFInfo
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- CN102922723A CN102922723A CN201210442864XA CN201210442864A CN102922723A CN 102922723 A CN102922723 A CN 102922723A CN 201210442864X A CN201210442864X A CN 201210442864XA CN 201210442864 A CN201210442864 A CN 201210442864A CN 102922723 A CN102922723 A CN 102922723A
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Abstract
The invention relates to a molding pipe split-flow mold which comprises a tail mold sleeve, a front mold sleeve, a transition support fixedly arranged between the tail mold sleeve and the front mold sleeve in a connecting mode, a mouth mold fixedly connected with a front end portion of the front mold sleeve, a split-flow support with a rear tail portion provided with a cone structure, and a core mold fixedly connected with a front end portion of the split-flow support. The split-flow support is contained in an inner cavity of the tail mold sleeve, an inner cavity of the transition support and an inner cavity of the front mold sleeve. The core mold is located in the mouth mold and coaxially arranged with the mouth mold. A flow pass used for passing of molten state materials is formed together between the outer wall face of the split-flow support and the inner wall face of the tail mold sleeve, the transition support and the front mold sleeve, and between the outer wall face of the core mold and the inner wall face of the mouth mold. At least one boss arching toward the flow pass is formed on the outer wall face of the core mold or the inner wall face of the mouth mold along the circumferential direction. The flow pass form a throat part with a decrescent cross section on the boss position. The molding pipe split-flow mold can improve density of molten materials in the flow pass, and enables intensity of molded plastic molding pipe products to be improved; and at the same time, utilization rate of a mold is also improved.
Description
Technical field
The present invention relates to the shunting mould that formed pipe uses in the extrusion molding process, relate in particular to one before the plastic shaping tube extrusion molding employed melt shunting mould.
Background technology
Accompanying drawing 1 is described to be the front view of the formed pipe shunting mould of conventional art, the shunting support 5 ' that this shunting mould comprises tail die sleeve 1 ', front die sleeve 3 ', is fixedly connected on the transition bracket 2 ' between tail die sleeve 1 ' and the front die sleeve 3 ', mouthful mould 4 ' that is fixedly connected with the leading section of front die sleeve 3 ', rearward end have conical structure and the core 6 ' that is fixedly connected with the leading section of shunting support 5 '; The rear end of tail die sleeve 1 ' has material feeding mouth 11 ', shunting support 5 ' is housed in the inner chamber 7 ' of tail die sleeve 1 ', transition bracket 2 ' and front die sleeve 3 ', core 6 ' be positioned at mouthful mould 4 ' and with 4 ' the coaxial setting of mouth mould, the common formation runner 8 ' that can supply the molten state material to pass through between the internal face of outside wall surface and tail die sleeve 1 ', transition bracket 2 ' and the front die sleeve 3 ' of shunting support 5 ', between the internal face of the outside wall surface of core 6 ' and mouthful mould 4 '; In the actual production, melt flows in the inner chamber 7 ' from the material feeding mouth 11 ' of tail die sleeve 1 ', after the 5 ' shunting of shunting support, flow through in the annular channel 8 ' that is surrounded by mouth mould 4 ' internal face and core 6 ' outside wall surface, flow at last the mould that is arranged in annular channel 8 ' leading portion and form the plastic shaping pipe through extrusion molding.
In order to enhance productivity, usually can use a cover shunting mould to produce the plastic shaping pipe of different tube diameters and different wall in the production, but the compression ratio of a cover shunting mould is limited, in actual production, tend to find that medium and small plastic shaping pipe can satisfy the requirement of goods combination property, and produce heavy caliber thick wall or produce melt viscosity low etc. some when having the plastic shaping pipe of specific (special) requirements, its compression ratio does not reach the requirement of goods combination property, thereby the melt that causes flowing out in annular channel 8 ' can't form fine and close molecular structure, and material skewness everywhere in runner 8 ', finally cause this type of plastic shaping pipe Pipes Density not enough, quality can not get ensureing; In order to ensure the quality of this type of plastic shaping pipe, need again processing shunting mould to satisfy the production requirement of this type of special plastic shaping tubing products in the actual production.
Summary of the invention
The objective of the invention is to provide a kind of on the basis of traditional moulds and improve the utilization rate that same set of formed pipe is shunted mould, and can increase formed pipe shunting mould that plastic shaping tubing products intensity makes it satisfy the processing procedure specific (special) requirements.
For achieving the above object, the technical solution used in the present invention is:
A kind of formed pipe shunting mould, described shunting mould comprise tail die sleeve, front die sleeve, are fixedly connected on the transition bracket between described tail die sleeve and the front die sleeve, mouthful mould, the rearward end that is fixedly connected with the leading section of described front die sleeve has the shunting support of conical structure and the core that is fixedly connected with the leading section of described shunting support; The rear end of described tail die sleeve has the material feeding mouth, described shunting support is housed in described tail die sleeve, in the inner chamber of transition bracket and front die sleeve, described core be positioned at described mouthful mould and with the coaxial setting of described mouth mould, the outside wall surface of described shunting support and described tail die sleeve, between the internal face of transition bracket and front die sleeve, the runner that common formation can supply the molten state material to pass through between the internal face of the outside wall surface of described core and described mouthful of mould, on the internal face of the outside wall surface of described core or mouthful mould along circumferentially being formed with respectively the boss that at least one arches upward to described runner, perhaps on the internal face of the outside wall surface of described core and mouthful mould along circumferentially all being formed with the boss that arches upward to a described runner at least, described runner forms the bottleneck throat that cross-sectional area diminishes at described boss place.
In the preferred version, the outside wall surface of described core or/and the internal face of mouthful mould in described boss place smooth transition.
In the preferred version, be formed with at least two described boss on the outside wall surface of described core, two adjacent described boss setting of being separated by vertically.
In the preferred version, the length ratio that the spacing between two adjacent described boss and each described boss extend vertically is for being 0.8:1-1.5:1.
In the preferred version, to described bottleneck throat, the cross-sectional area of described runner reduces gradually from the rearward end of described shunting support.
In the preferred version, the rearward end of described mouthful of mould has the first contraction flow region that interior bore reduces gradually, and the rearward end of described core has the second contraction flow region that outer bore reduces gradually, and described the second contraction flow region is positioned at described the first contraction flow region.
In the preferred version, described boss has the front domatic of described material feeding mouth dorsad, and the angle between the axial line of described front domatic and described core is less than 20 °.
Operation principle of the present invention is as follows:
A kind of formed pipe shunting mould of the present invention is mainly used in fused materials is imported the shunting mould inside; after the shunting through the shunting support; form at last the plastic shaping pipe of moulding; because the flow velocity of melt when flowing into shunting mould charging aperture is very fast; through the tapered shunting support and be arranged on core or mouthful mould on the boss of several undaforms to the melt choked flow after; form the slower melt of flow velocity; the melt of this moment is because flow velocity is slower; a large amount of molecules can fill up because the molecular gap that the melt flow velocity produces when very fast; adjacent melt molecule can have the sufficient time to interconnect before uncolled moulding and fine and close micel; thereby improve the density of melt; so that intensity and the hardness of the plastic shaping tubing products of subsequent forming improve greatly, its surface roughness also improves.
A kind of formed pipe of the present invention shunting mould increases the boss of undaform by the outside wall surface at its core or mouthful mould, and it is compared with conventional art, has the following advantages:
The present invention adopts the core with undaform boss structure or/and mouthful mould; in the time of in flow of molten materials enters runner; the core of undaform boss is or/and a mouthful mould carries out the choked flow reduction of speed to melt; thereby make the molecular structure of material more even; make the structure of formed pipe inside finer and close on the macroscopic view; molded surface is more smooth, thereby the intensity of formed pipe is enhanced.
Description of drawings
Accompanying drawing 1 is the front view of the formed pipe shunting mould of conventional art;
Accompanying drawing 2 is the front view of formed pipe shunting mould of the present invention;
In the above accompanying drawing: 1, tail die sleeve; 11, material feeding mouth; 2, transition bracket; 3, front die sleeve; 4, mouthful mould; 40, the first contraction flow region; 5, shunting support; 6, core; 60, the first contraction flow region; 61, boss; 62, front domatic; 7, inner chamber; 8, runner; B1, the first bolt; B2, the second bolt; B3, the 3rd bolt.
The specific embodiment
The invention will be further described (this specification described " the place ahead " refers to the left in the accompanying drawing 1, i.e. the direction of accompanying drawing upward arrow indication, " rear " refers to right-hand in the accompanying drawing) below in conjunction with the drawings and the specific embodiments:
Accompanying drawing 2 is the front view of formed pipe of the present invention shunting mould, the shunting support 5 that it comprises tail die sleeve 1, front die sleeve 3, is fixedly connected on the transition bracket 2 between tail die sleeve 1 and the front die sleeve 3, the mouth mould 4 that is fixedly connected with the leading section of front die sleeve 3, rearward end have conical structure and the core 6 that is fixedly connected with the leading section of shunting support 5; The rear end of tail die sleeve 1 has material feeding mouth 11, shunting support 5 is housed in the inner chamber 7 of tail die sleeve 1, transition bracket 2 and front die sleeve 3, core 6 be positioned at mouthful mould 4 and with the 4 coaxial settings of mouth mould, mouth mould 4 rearward end have the first contraction flow region 40 that interior bore reduces gradually, core 6 rearward end have the second contraction flow region 60, the second contraction flow regions 60 that outer bore reduces gradually and are positioned at the first contraction flow region 40; Outside wall surface and the tail die sleeve 1 of shunting support 5, between the internal face of transition bracket 2 and front die sleeve 3, the runner 8 that common formation can supply the molten state material to pass through between the internal face of the outside wall surface of core 6 and mouthful mould 4, the edge circumferentially is formed with at least one boss 61 that arches upward to described runner 8 on the outside wall surface of core 6, in other specific embodiment, boss 61 also can be along on the internal face that circumferentially is distributed in mouthful mould 4, perhaps simultaneously along on the internal face of the outside wall surface that circumferentially is distributed in core 6 and mouthful mould 4, plural boss 61 forms smooth Wave-shaped structural in the outside wall surface of core 6 or the internal face of mouthful mould 4, two adjacent boss 61 setting of being separated by vertically, generally, the spacing between two adjacent boss 61 and each boss 61 length ratio vertically are 0.8:1-1.5:1; Runner 8 forms the bottleneck throat that cross-sectional area diminishes at boss 61 places, from the shunting support 5 rearward end to bottleneck throat, the cross-sectional area of runner 8 reduces gradually, this type of have Wave-shaped structural boss 61 can so that the flow velocity of the molten state material of the boss 61 of flowing through slow down, also has angle between the axial line of dorsad front domatic 62, front domatic 62 and core 6 of material feeding mouth 11 on the boss 61 of Wave-shaped structural less than 20 °.
When formed pipe shunting mould is installed, the 3rd bolt B 3 that is circle distribution will be positioned at forward and backward front die sleeve 3, the tail die sleeve 1 of shunting support 5 and be fixed together by former and later two end faces of transition bracket 2 respectively, core 6 is fixed on the shunting support 5 by the second bolt B 2, and a mouthful mould 4 is fixed on the front die sleeve 3 by the first bolt B 1 that is circle distribution.
When the lower plastic shaping pipe of the plastic shaping pipe of producing heavy caliber thick wall or melt viscosity, core 6 or mouthful mould 4 for the production of the mould of medium and small plastic shaping pipe can be replaced with above-mentioned core 6 or mouthful mould 4 with boss 61 of Wave-shaped structural, in the production process, melt flows in the inner chamber 7 from the material feeding mouth 11 of tail die sleeve 1, the melt flow velocity of this moment is very fast, after 5 shuntings of shunting support, flow through in the runner 8 of the boss with Wave-shaped structural 61 that surrounded by mouth mould 4 internal faces and core 6 outside wall surface, this moment, melt reduced through flow velocity after the choked flow of boss 61, when a large amount of melt molecules have filled up very fast by the melt flow velocity and the molecular gap that produces, so that adjacent melt molecule has the sufficient time to interconnect before uncolled moulding and fine and close micel, thereby improve the density of melt, so that intensity and the hardness of the plastic shaping tubing products of subsequent forming improve greatly, its surface roughness also improves.
A kind of formed pipe shunting of the present invention mould, the 61 pairs of melts of boss that increase undaform by the internal face at the outside wall surface of its core 6 or mouthful mould 4 carry out the choked flow reduction of speed, it is compared with conventional art, when the lower plastic shaping pipe of the plastic shaping pipe of producing heavy caliber thick wall or melt viscosity, the core 6 or mouthful mould 4 that only need the core 6 in the same set of mould or mouthful mould 4 to be replaced with the boss 61 with undaform get final product, thereby but the specification limit of same set of mould article of manufacture is enlarged, reduce conventional art to need according to the specification of different article of manufacture and the cost of the new shunting of processing mould again, thereby effectively raised the utilization rate of shunting mould; When replacing has the core 6 of boss 61 or mouthful mould 4 at the lower plastic shaping pipe of the plastic shaping pipe of producing heavy caliber thick wall or melt viscosity, the melt of shunting in the mould can better fused seams, plastic shaping pipe tube forming density is high, thereby the performance that guarantees the plastic shaping tubing products can meet that plastic shaping tubing products its anti-time to rupture under long-term constant internal pressure is long, the plastic shaping tubing products is in the high requirement of appearance property of long-term hydrostatic lower its intensity height and plastic shaping tubing products.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. formed pipe shunting mould, described shunting mould comprise tail die sleeve (1), front die sleeve (3), are fixedly connected on the transition bracket (2) between described tail die sleeve (1) and the front die sleeve (3), mouthful mould (4), the rearward end that is fixedly connected with the leading section of described front die sleeve (3) has the shunting support (5) of conical structure and the core (6) that is fixedly connected with the leading section of described shunting support (5); The rear end of described tail die sleeve (1) has material feeding mouth (11), described shunting support (5) is housed in described tail die sleeve (1), in the inner chamber (7) of transition bracket (2) and front die sleeve (3), described core (6) be positioned at described mouthful mould (4) and with the coaxial setting of described mouth mould (4), the outside wall surface of described shunting support (5) and described tail die sleeve (1), between the internal face of transition bracket (2) and front die sleeve (3), the runner (8) that common formation can supply the molten state material to pass through between the internal face of the outside wall surface of described core (6) and described mouthful of mould (4), it is characterized in that: in the outside wall surface of described core (6) or/and on the internal face of mouthful mould (4) along circumferentially being formed with respectively at least one boss that arches upward to described runner (61), described runner (8) locates to form the bottleneck throat that cross-sectional area diminishes at described boss (61).
2. a kind of formed pipe according to claim 1 is shunted mould, it is characterized in that: the outside wall surface of described core (6) is or/and the internal face of mouthful mould (4) is located smooth transition at described boss (61).
3. a kind of formed pipe shunting mould according to claim 1 is characterized in that: be formed with at least two described boss (61) on the outside wall surface of described core (6), the setting of being separated by vertically of adjacent two described boss (61).
4. a kind of formed pipe according to claim 3 is shunted mould, and it is characterized in that: the length ratio that the spacing between adjacent two described boss (61) and each described boss (61) extend vertically is 0.8:1-1.5:1.
5. a kind of formed pipe shunting mould according to claim 1 is characterized in that: to described bottleneck throat, the cross-sectional area of described runner (8) reduces gradually from the rearward end of described shunting support (5).
6. a kind of formed pipe according to claim 1 is shunted mould, it is characterized in that: the rearward end of described mouthful of mould (4) has the first contraction flow region (40) that interior bore reduces gradually, the rearward end of described core (6) has the second contraction flow region (60) that outer bore reduces gradually, and described the second contraction flow region (60) is positioned at described the first contraction flow region (40).
7. a kind of formed pipe according to claim 1 and 2 is shunted mould, it is characterized in that: described boss (61) has dorsad front domatic (62) of described material feeding mouth (11), and the angle between the axial line of described front domatic (62) and described core (6) is less than 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442864XA CN102922723A (en) | 2012-11-08 | 2012-11-08 | Molding pipe split-flow mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210442864XA CN102922723A (en) | 2012-11-08 | 2012-11-08 | Molding pipe split-flow mold |
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| Publication Number | Publication Date |
|---|---|
| CN102922723A true CN102922723A (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210442864XA Pending CN102922723A (en) | 2012-11-08 | 2012-11-08 | Molding pipe split-flow mold |
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| CN (1) | CN102922723A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192512A (en) * | 2013-04-10 | 2013-07-10 | 刘迎春 | Plastic pipe density intensifying and bright-draw device |
| CN104309050A (en) * | 2014-09-26 | 2015-01-28 | 德清久特建材有限公司 | Lower template of PVC foam board's extrusion die |
| CN108327219A (en) * | 2018-01-31 | 2018-07-27 | 苏州金纬机械制造有限公司 | Static mixer |
| CN108995175A (en) * | 2018-07-18 | 2018-12-14 | 联塑市政管道（河北）有限公司 | A kind of PVC-U gives, drainpipe sharing die |
| CN110948816A (en) * | 2019-12-21 | 2020-04-03 | 武汉亚联塑业有限公司 | Extruding machine |
| CN113172861A (en) * | 2021-05-12 | 2021-07-27 | 台州市卓信塑业有限公司 | Converging device of extruder |
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| US3932102A (en) * | 1974-11-01 | 1976-01-13 | Koehring Company | Spiral design pipehead |
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| CN101890795A (en) * | 2010-06-23 | 2010-11-24 | 苏州金纬机械制造有限公司 | Shunt device |
| CN202293282U (en) * | 2011-10-09 | 2012-07-04 | 湖北中硕科技有限公司 | Internal-basket externally-distributive plastic composite pipe mould |
| CN202412660U (en) * | 2011-12-15 | 2012-09-05 | 新疆天业（集团）有限公司 | Double-layer composite pipe headpiece |
| CN202934797U (en) * | 2012-11-08 | 2013-05-15 | 苏州金纬机械制造有限公司 | Shunting mold of molding pipe |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3525125A (en) * | 1967-07-12 | 1970-08-25 | Basf Ag | Annular die for extruders,particularly an annular die for the production of blown tubular film and sheeting from expandable thermoplastics |
| US3899276A (en) * | 1973-05-29 | 1975-08-12 | Beloit Corp | Annular extrusion die with back pressure control |
| US3932102A (en) * | 1974-11-01 | 1976-01-13 | Koehring Company | Spiral design pipehead |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192512A (en) * | 2013-04-10 | 2013-07-10 | 刘迎春 | Plastic pipe density intensifying and bright-draw device |
| CN104309050A (en) * | 2014-09-26 | 2015-01-28 | 德清久特建材有限公司 | Lower template of PVC foam board's extrusion die |
| CN104309050B (en) * | 2014-09-26 | 2016-09-07 | 德清久特建材有限公司 | A kind of lower bolster of PVC foam plate extrusion die |
| CN108327219A (en) * | 2018-01-31 | 2018-07-27 | 苏州金纬机械制造有限公司 | Static mixer |
| CN108995175A (en) * | 2018-07-18 | 2018-12-14 | 联塑市政管道（河北）有限公司 | A kind of PVC-U gives, drainpipe sharing die |
| CN110948816A (en) * | 2019-12-21 | 2020-04-03 | 武汉亚联塑业有限公司 | Extruding machine |
| CN110948816B (en) * | 2019-12-21 | 2021-05-18 | 武汉亚联塑业有限公司 | Extruding machine |
| CN113172861A (en) * | 2021-05-12 | 2021-07-27 | 台州市卓信塑业有限公司 | Converging device of extruder |
| CN113172861B (en) * | 2021-05-12 | 2022-12-16 | 台州市卓信塑业有限公司 | Converging device of extruder |
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Application publication date: 20130213 |