CN1504319A - Mould for extrusion melt tube - Google Patents
Mould for extrusion melt tube Download PDFInfo
- Publication number
- CN1504319A CN1504319A CNA200310118031A CN200310118031A CN1504319A CN 1504319 A CN1504319 A CN 1504319A CN A200310118031 A CNA200310118031 A CN A200310118031A CN 200310118031 A CN200310118031 A CN 200310118031A CN 1504319 A CN1504319 A CN 1504319A
- Authority
- CN
- China
- Prior art keywords
- mould
- fused solution
- confining wall
- solution passage
- helicla flute
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/695—Flow dividers, e.g. breaker plates
- B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
- B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
- B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/001—Tubular films, sleeves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A tool for extruding a pipe-shaped melt strand of thermoplastic material, having a ring-shaped outlet nozzle and at least one melt conduit leading from an associated inlet opening to the outlet nozzle, which extends concentrically with respect to the center axis of the tool and into whose peripheral wall spirally turning helices are cut and form a helical manifold extending in the outlet direction of the melt strand. The helices are cut into the inner peripheral wall and into the outer peripheral wall of the at least one melt conduit.
Description
Technical field
The present invention relates to a kind of mould by thermoplastic extruded tubular melting tube, comprise tubulose output mouth and at least one make corresponding inlet lead to the output mouth and with the fused solution passage that the axis centering of mould distributes, on their confining wall, form spiral yarn shaped around helicla flute by the spiral distributor (wendelverteilers) that extends to form at the melting tube outbound course.
Background technology
For example DE44 07 060 A1 and DE 39 25 042A1 disclose such mould.
The problem that the mould that is used for thermoplastic extruded tubular melting tube for example is used to make the maximum of blocking is, make the fused solution that enters the mouth out from fused solution in mould, realize evenly distributing, with after on its circumference equally distributed melting tube flow out from tubulose output mouth.If produce the logistics fluctuation, can influence the thickness fluctuation of finished product blocking, this under any circumstance should be avoided.For this reason, in the fused solution passage, to be provided with have spiral yarn shaped around the so-called spiral distributor of helical structure, the fused solution that enters from inlet in the output mouth direction uniform distribution of mould wherein.
In known mould, its helical structure is made of the spiral yarn shaped circumferential groove with respect to the confining wall interior zone of the fused solution passage of mould axis.Because this spiral distributor of being made up of single helicla flute is in fact in the direction of extrusion and thus in the extension of the outbound course of melting tube, vertical orientation from bottom to top usually, people can associate the vertical spin distributor.
In addition, used at present to be used at the inlet of mould and the different distributors of the plastics fused solution between the output mouth, it is vertical with outbound course promptly normally horizontally extending with the fused solution direction of extrusion, be called horizontal distributor thus, for example with reference to US-A 3,809,515.Yet this horizontal distributor manufacturing cost is higher and compare with known vertical fused solution distributor and need occupy bigger space.
Summary of the invention
The objective of the invention is to regard to the blocking quality to improve the mould with vertical fused solution distributor type, it prevents especially owing to the situation that blocking that reason usually unavoidably occurs is polluted such as being dipped into.
The purpose that proposes in order to realize the invention provides the improved mould structure according to the feature of claim 1, and wherein helicla flute is not only forming on the inboard confining wall of at least one fused solution passage but also on its outside confining wall according to the present invention.
The favourable technical scheme of mould of the present invention and further structure are the themes of dependent claims.
According to the type and the product parameters of fused solution to be processed, spiral fluted cross section semicircular in shape or be similar to semicircle.
In addition, be provided with aligned with each otherly or be provided with each other at outbound course with staggering at the helicla flute that forms on the inboard confining wall of a fused solution passage and form on the side confining wall outside, this is definite according to handled thermoplastic corresponding rheological behavior at that time.
In addition, the spiral fluted degree of depth reduces from the direction of inlet to the output mouth.
Mould of the present invention can be used as the individual layer mould that is used to make individual layer tubulose melting tube, for example is used for extruding and forms blocking, in this case, the spiral distributor of subordinate is set on a fused solution passage just.
Particularly make the mould that can be used as multiple layers of molds according to the invention provides, it comprises a plurality of lead to the output mouth and fused solution passages of the spiral distributor that respectively has subordinate that is provided with of centering each other, and wherein helicla flute is not only forming on the inboard confining wall of each fused solution passage but also on its outside confining wall.In addition, multiple layers of molds constitutes like this according to the present invention, and promptly all fused solution passages converge in a position of mould and are communicated with the output mouth subsequently.
Description of drawings
Describe with reference to the accompanying drawings, further details of the present invention and structure will be more clear.Wherein:
Fig. 1 shows the vertical cross-section diagram of mould of the present invention;
Fig. 2 shows the enlarged diagram of mold sections shown in Figure 1;
Fig. 3-5 shows the amplification detail view of the X different embodiment partly of the spiral distributor that uses according to Fig. 2 in mould of the present invention.
The specific embodiment
Illustrated among Fig. 1 by the mould (for example being used to make blocking) of thermoplastic extruded tubular melting tube vertical sectional drawing along axis A.This mould is a multiple layers of molds, here is three layers of mould, and core 1 in comprising in known manner, its outside on keeping the basis of the first fused solution passage 6.1 by one in distribution member 2 surround.Then, distribution member arranged outside one outer distribution member 3 within it, wherein interior distribution member 2 and outside form the second fused solution passage 6.2 between the distribution member 3.At last, by the outside of shell 4 closed moulds, wherein form fused solution passage 6.3 outside between distribution member 3 and the shell 4.
This fused solution passage 6.1,6.2,6.3 offers unshowned pressurizing unit through each inlet 7.1,7.2,7.3 with thermoplastic molten liquid from the downside of mould, and its fused solution passage 6.1,6.2,6.3 leads to the tubulose output mouth 5 that forms at the mould upside, carrying in vertical direction through the fused solution of 7.1,7.2,7.3 inputs that enter the mouth, at last, the whole fused solutions that come out from tubulose output mouth 5 form the tubulose melting tube in known manner in extruding or outbound course E output.
Fused solution passage 6.1,6.2,6.3 and the mold component that limits them promptly in core 1, interior distribution member 2, outer distribution member 3 the same with shell 4, be provided with one heart with respect to axis A at the mould of vertical direction distribution.
Especially as can be known by the enlarged diagram of Fig. 2, all fused solution passage 6.1,6.2,6.3 position S in mould of each layer of multilayered molten pipe that guiding derives from tubulose output mouth 5 subsequently compile and are bonded into the multilayered molten pipe, its melting tube at outbound course E from 5 outputs of tubulose output mouth.All fused solution passages 6.1,6.2,6.3 position S in mould converges at the place thickness stability of the multilayer paper tinsel that can improve formation.Under narrow space, can also one after the other on outbound course E, carry out narrow as far as possible the compiling in succession of each fused solution passage 6.1,6.2,6.3, compile so that carry out the ideal of fused solution passage 6.1,6.2,6.3 as far as possible at S place, position as shown in Figure 2.
In addition, as can be seen from Figure 2, at first import the spiral distributor 8 that extends at the melting tube outbound course through 7.1,7.2, the 7.3 fused solution streams that flow into that enter the mouth, the fused solution that is entered by inlet in the spiral distributor is assigned on the whole circumference of each fused solution passage 6.1,6.2,6.3 as far as possible uniformly, obtains uniform bed thickness by the whole output slit of exporting mouth 5.
In the enlarged diagram of the part X of Fig. 2 spiral distributor 8 illustrated in fig. 3, for example can see fused solution passage 6.1, in this fused solution passage, carry to tubulose output mouth 5 directions by inlet 7.1 fused solutions that enter.Fused solution passage 6.1 limits its inboard about axis A by inboard confining wall 60, and limits its outside about axis A by its outside confining wall 61.Below by the explanation of fused solution passage 6.1 also bases fit in remaining fused solution passage 6.2 and 6.3.
Its spiral distributor 8 by winding mold tool axis A around helicla flute 80a, 80b spiral yarn shaped and that in the confining wall of fused solution passage 6.1, form constitute, they distribute fused solution around the circumference of fused solution passage.
The principal character of its spiral distributor 8 is, form spiral distributor 8 spiral yarn shaped around helicla flute 80a, 80b not only forming on the inboard confining wall 60 of fused solution passage 6 but also on its outside confining wall 61, obviously improved the distribution of fused solution in fused solution passage 6 thus, in addition, can resist deposition and the analogue that causes exporting tubulose melting tube fouling product subsequently.Its inboard helicla flute and outside helicla flute can by identical turn to or oppositely around axis A around.
According to the embodiment of Fig. 3, the helicla flute 80a that forms on the inboard confining wall 60 and outside on the side confining wall 61 the helicla flute 80b of formation be provided with aligned with each otherly.
In an alternative embodiment shown in Figure 4, at the helicla flute 80a that forms on the inboard confining wall 60 with respect to the helicla flute 80b setting each other on outbound course E that forms on the side confining wall 61 outside with staggering.
In addition, preferably, the cross section of helicla flute 80a, 80b is semicircular in shape in drawing for example, and in addition, the degree of depth T that forms helicla flute 80a, 80b radius simultaneously is formation from 7.1,7.2,7.3 directions to tubulose output mouth 5 that enter the mouth with reducing.
At last, in alternative embodiment shown in Figure 5, except the helicla flute of representing with mark 80 with semi-circular cross-section, the helicla flute of such cross section is set also, promptly its contour approximation is oval, represents with mark 80.1.In addition, the helicla flute shape of cross section that can select other to be fit to.
Except shown in embodiment, its mould can have the fused solution passage greater or less than described three fused solution passages 6.1,6.2,6.3, for example constitutes only to have the individual layer mould of a fused solution passage or the multiple layers of molds that formation has two or more fused solution passages.
In the multiple layers of molds structure that has more than a fused solution passage 6, fused solution passage 6 preferred common location S places in mould compile.
Claims (6)
1. mould by thermoplastic extruded tubular melting tube, comprise tubulose output mouth (5) and at least one inlet (7.1 from a subordinate, 7.2,7.3) lead to fused solution passage (6.1 output mouth (5) and that distribute with axis (A) centering of mould, 6.2,6.3), spiral yarn shaped around helicla flute by spiral distributor 8 formation that extend to form at melting tube outbound course (E) on their confining wall, it is characterized in that: this helicla flute is not only at least one fused solution passage (6.1,6.2,6.3) inboard confining wall (60) go up and go up and form at its outside confining wall (61).
2. mould as claimed in claim 1 is characterized in that: spiral fluted cross section semicircular in shape.
3. as the mould of claim 1 or 2, it is characterized in that: the helicla flute of going up formation at inboard confining wall (60) and its outside confining wall (61) of a fused solution passage (6.1,6.2,6.3) is provided with aligned with each otherly.
4. as the mould of claim 1 or 2, it is characterized in that: the helicla flute of going up formation at inboard confining wall (60) and its outside confining wall (61) of a fused solution passage (6.1,6.2,6.3) is provided with each other at outbound course (E) with staggering.
5. as the mould of one of claim 1-4, it is characterized in that: the spiral fluted degree of depth (T) reduces from the direction of inlet (7) to tubulose output mouth (5).
6. as the mould of one of claim 1-5, it is characterized in that: by a plurality of spiral distributor (8) formations of leading to fused solution passage (6.1,6.2,6.3) output mouth (5) and centering setting each other and subordinate, wherein the position (S) of all fused solution passages (6.1,6.2,6.3) in mould converged and is communicated with output mouth (5) as multiple layers of molds for it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20218760.8 | 2002-12-04 | ||
| DE20218760 | 2002-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1504319A true CN1504319A (en) | 2004-06-16 |
Family
ID=27798417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200310118031A Pending CN1504319A (en) | 2002-12-04 | 2003-11-24 | Mould for extrusion melt tube |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1504319A (en) |
| DE (1) | DE20307412U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105658412A (en) * | 2013-10-15 | 2016-06-08 | 莱芬豪舍机械制造两合公司 | Method for producing an endless film by means of a blown film line |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004040151B4 (en) | 2004-08-19 | 2008-08-21 | Hosokawa Alpine Ag | Film blowing head for the production of tubular films |
| DE102007029310A1 (en) | 2007-02-13 | 2008-08-14 | Kiefel Extrusion Gmbh | Spiral distributor for a blown film plant |
| DE102010042882B4 (en) | 2010-10-25 | 2014-01-16 | Windmöller & Hölscher Kg | Film die |
| CN103354779B (en) | 2010-12-08 | 2016-06-22 | 温德莫勒及霍尔希尔公司 | Film extrusion die |
| WO2013113305A1 (en) * | 2012-01-30 | 2013-08-08 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Spiral distributor, blown film die, blown film line, method for producing a blown film, and blown film |
| DE202019105685U1 (en) * | 2019-10-15 | 2021-01-19 | Kautex Maschinenbau Gmbh | Extrusion technology for the formation of plastic preforms and throttle technology |
| DE202019105681U1 (en) * | 2019-10-15 | 2021-01-19 | Kautex Maschinenbau Gmbh | Extrusion technology for the formation of plastic preforms and tube formation technology |
| DE202019105683U1 (en) * | 2019-10-15 | 2021-01-19 | Kautex Maschinenbau Gmbh | Extrusion technology for the formation of plastic preforms and profiling technology |
| DE202019105678U1 (en) * | 2019-10-15 | 2021-01-19 | Kautex Maschinenbau Gmbh | Extrusion technology for the formation of plastic preforms and melt absorption technology |
-
2003
- 2003-05-13 DE DE20307412U patent/DE20307412U1/en not_active Expired - Lifetime
- 2003-11-24 CN CNA200310118031A patent/CN1504319A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105658412A (en) * | 2013-10-15 | 2016-06-08 | 莱芬豪舍机械制造两合公司 | Method for producing an endless film by means of a blown film line |
Also Published As
| Publication number | Publication date |
|---|---|
| DE20307412U1 (en) | 2003-08-28 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |