CN109291394A - The three-layer co-extruded spiral mould of PE tubing and its charging distribution method - Google Patents

The three-layer co-extruded spiral mould of PE tubing and its charging distribution method Download PDF

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Publication number
CN109291394A
CN109291394A CN201811382614.5A CN201811382614A CN109291394A CN 109291394 A CN109291394 A CN 109291394A CN 201811382614 A CN201811382614 A CN 201811382614A CN 109291394 A CN109291394 A CN 109291394A
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CN
China
Prior art keywords
conveyor screw
layer
runner
tubing
slot
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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
Application number
CN201811382614.5A
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Chinese (zh)
Inventor
何海潮
李亚飞
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Changzhou Jinwei Pipeline Equipment Manufacturing Co Ltd
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Changzhou Jinwei Pipeline Equipment Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Jinwei Pipeline Equipment Manufacturing Co Ltd filed Critical Changzhou Jinwei Pipeline Equipment Manufacturing Co Ltd
Priority to CN201811382614.5A priority Critical patent/CN109291394A/en
Publication of CN109291394A publication Critical patent/CN109291394A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C2037/80Identifying, e.g. coding, dating, marking, numbering
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04Polymers of ethylene
    • B29K2023/06PE, i.e. polyethylene
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00Tubular articles
    • B29L2023/22Tubes or pipes, i.e. rigid

Abstract

The invention discloses a kind of three-layer co-extruded spiral mould of PE tubing and its charging distribution methods, the three-layer co-extruded spiral mould of PE tubing includes feed zone, outer wall runner, middle layer runner and inner wall runner, the feed zone has outer feed inlet, middle charging aperture and interior feed inlet, the outer wall runner is connected with the outer feed inlet, middle layer runner is connected with the middle charging aperture, and inner wall runner is connected with the interior feed inlet.Outer skin materials and internal layer material of the invention are individually fed, and are made the mobility that material is evenly distributed, offer is more excellent, are improved the quality of PE tubing.

Description

The three-layer co-extruded spiral mould of PE tubing and its charging distribution method
Technical field
The present invention relates to a kind of three-layer co-extruded spiral mould of PE tubing and its charging distribution methods, belong to tube forming technology Field.
Background technique
Recent two decades, domestic PE tubular object extruding enterprise have obtained very swift and violent development, an every household PE processing enterprise such as rain Breaking through the soil as spring bamboo afterwards, while the manufacturing firm of PE extruder also gradually increases forms domestic brand extruder and outer The situation vied each other of money brand extruder, in this case, various PE tubular object extruding molds also consequentiality.PE Multi-layer co-extruded pipe mold is widely used in the fields such as water supply, draining, combustion gas and no-dig technique, is based on spiral melt distribution technique, knot The contract heart, conical surface distributor, the multilayer extrusion suitable for any circular cross-section.But in this many die casting producer, have Due to unreasonable, the ratio that the tubing section layering for causing client to make cannot be specified according to client of mould structure feed design Distribution, the client especially having makes tubing using the raw material of different colours, since ratio is unevenly distributed, it is easy to see tubing Eccentric, the shortcomings that being unevenly distributed.Show even client adjusts always mouth mold, plug gap can not change that tubing is unevenly distributed As especially relating to the dismounting of big mold, taking even if ratio uniform can not be adjusted to completely by causing client to change mold When, it is laborious, expensive.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of three-layer co-extruded spiral shell of PE tubing is provided Mold is revolved, its outer skin materials and internal layer material are individually fed, make the mobility that material is evenly distributed, offer is more excellent, Improve the quality of PE tubing.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of three-layer co-extruded spiral mould of PE tubing, it Including feed zone, outer wall runner, middle layer runner and inner wall runner, the feed zone has outer feed inlet, middle charging aperture and interior Feed inlet, the outer wall runner are connected with the outer feed inlet, and middle layer runner is connected with the middle charging aperture, inner wall stream Road is connected with the interior feed inlet.
Further, the outer feed inlet and interior feed inlet are apart 180 ° in the circumferential direction of feed zone.
It further, further include spiral section and discharging section, the feed zone, spiral section and discharging section are sequentially connected;Wherein,
The spiral section is radially disposed with internal layer conveyor screw, middle layer conveyor screw and outer layer conveyor screw, the internal layer spiral shell Rotation body be connected with the interior feed inlet, the middle layer conveyor screw is connected with the middle charging aperture, the outer layer conveyor screw and The outer feed inlet is connected;
The discharging section is provided with the reactor effluent stream for converging the material of internal layer conveyor screw, middle layer conveyor screw and outer layer conveyor screw out Road.
Further, the feed zone is provided with outer arcuate slot, inner arc slot, two accessibke porosities and two inner via holes, described The intermediate position of outer feed inlet and outer arcuate slot is connected, two ends of outer arcuate slot again respectively by an accessibke porosity with it is described Outer layer conveyor screw is connected, and the intermediate position of the interior feed inlet and inner arc slot is connected, and two ends of inner arc slot are again Respectively it is connected by an inner via hole with the internal layer conveyor screw.
Further, the internal layer conveyor screw and outer layer conveyor screw respectively have eight groups of helical flow path groups and two three-level conveyor screws Slot, every group of helical flow path group include two adjacent helical flow paths, and each accessibke porosity and each inner via hole pass through one three respectively Grade conveyor screw slot be connected with corresponding four groups of helical flow path groups, each three-level conveyor screw slot with a first conveyor screw slot, Two the second conveyor screw slots and four third conveyor screw slots, the first conveyor screw slot are connected with inner via hole or accessibke porosity, and It is connected respectively with two the second conveyor screw slots, each second conveyor screw slot is connected with two third conveyor screw slots respectively, often A third conveyor screw slot is respectively communicated with two helical flow paths in one group of helical flow path group, so that in each helical flow path All circulation has material.
Further, the spiral section, which is provided with, compresses internal layer conveyor screw, middle layer conveyor screw and outer layer spiral out for converging The outlet of the material of body, the discharging runner are connected with the outlet.
Further, the discharging section includes the releasing section being sequentially connected, adjusts co-extrusion ring and mouth mold, setting in the mouth mold There is plug, forms the endpiece of discharging runner between plug and mouth mold, be provided with and the discharging runner on the adjusting co-extrusion ring The markings runner being connected.
The present invention also provides a kind of charging distribution methods of three-layer co-extruded spiral mould of PE tubing, wherein outer skin materials It is fed by outer wall runner, and enters feed zone through outer feed inlet, middle layer material is fed by middle layer runner, and is fed in warp Mouth enters feed zone, and internal layer material is fed by inner wall runner, and enters feed zone through interior feed inlet.
Further, the outer skin materials of feed inlet enter outer arcuate slot out, and are divided into two-way outer skin materials, every road outer layer object Material, enters outer layer conveyor screw through accessibke porosity, and the internal layer material of interior feed inlet enters inner arc slot out, and is divided into two-way internal layer object Material, every road internal layer material enter internal layer conveyor screw through inner via hole;
Every road enter the outer skin materials of outer layer conveyor screw through three-level conveyor screw slot enter eight helical flow paths of outer layer conveyor screw into The distribution of row spiral, the internal layer material that every road enters internal layer conveyor screw enter eight spirals of internal layer conveyor screw through three-level conveyor screw slot Runner carries out spiral distribution, and the middle layer material of middle charging aperture enters the progress spiral distribution of middle layer conveyor screw out;
Outer skin materials after the distribution of outer layer conveyor screw, the middle layer material after the distribution of middle layer conveyor screw and through internal layer conveyor screw point Internal layer material after matching converges compression in the exit of spiral section and forms PE tubing;
PE tubing is squeezed out along discharging runner, successively through releasing section, adjusting co-extrusion ring and by mouth mold and plug during extrusion The endpiece of the discharging runner of formation;
Wherein, when PE tubing is overregulated co-extrusion ring, colour code material is fed by markings runner, and is adjusted co-extrusion ring in PE Markings are processed on tubing.
After above-mentioned technical proposal, the outer skin materials and internal layer object of the three-layer co-extruded spiral mould of PE tubing of the invention Material uses independent feeding manner, makes the mobility that material is evenly distributed, offer is more excellent, improves the quality of PE tubing;Outer layer Material or internal layer material divide two-way to enter spiral section, when every road outer skin materials or internal layer material are through three-level conveyor screw, first by first Then conveyor screw slot one-to-two by the second conveyor screw slot two divides four, by third conveyor screw slot four divides eight again, be divided into eight path outer layers Material or internal layer material, every path outer skin materials or internal layer material enter a helical flow path, so that each helical flow path Inside all circulation has material, and helical flow path of the invention is without dead angle, so that pressure loss is low, melt temperature is low, replacement has face When color material can rapid cleaning, also further ensure the quality of PE tubing;The outer skin materials of outer wall runner enter outer layer out Conveyor screw carries out spiral distribution, and the middle layer material of middle layer runner enters the progress spiral distribution of middle layer conveyor screw out, out inner wall stream The internal layer material in road enters internal layer conveyor screw and carries out spiral distribution, conducive to the plasticizing of material;It is outer after the distribution of outer layer conveyor screw Layer material, the middle layer material after the distribution of middle layer conveyor screw and the internal layer material after the distribution of internal layer conveyor screw going out in spiral section Converge compression at mouthful and forms PE tubing;PE tubing is squeezed out along discharging runner, successively total through releasing section, adjusting during extrusion The endpiece for squeezing ring and the runner that discharges formed by mouth mold and plug, using the three-layer co-extruded spiral mould of PE tubing of the invention and into Expect that distribution method, the compression strength and ring stiffness for the PE tubing produced greatly improve, each layer uniform feeding, wall thickness is consistent, mentions The quality of tubing is risen, while middle layer can use PE reclaimed materials, reduce production cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the three-layer co-extruded spiral mould of PE tubing of the invention;
Fig. 2 is the top view of feed zone of the invention;
Fig. 3 is the bottom view of feed zone of the invention;
Fig. 4 is the structural schematic diagram of outer layer conveyor screw or internal layer conveyor screw of the invention.
Specific embodiment
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing The present invention is described in further detail.
Embodiment one
As shown in Fig. 1 ~ 4, a kind of three-layer co-extruded spiral mould of PE tubing, it includes feed zone 1, outer wall runner 21, intermediate laminar flow Road 22 and inner wall runner 23, the feed zone 1 have outer feed inlet, middle charging aperture and an interior feed inlet, the outer wall runner 21 with The outer feed inlet is connected, and middle layer runner 22 is connected with the middle charging aperture, inner wall runner 23 and the interior feed inlet It is connected.In the present embodiment, the tail end of the middle layer runner 22 is provided with the material for distributing middle layer runner 22 Shunting body 10.
As shown in Figure 1, the outer feed inlet and interior feed inlet are in the circumferential direction of feed zone 1 at a distance of 180 °.In the present embodiment In, outer feed inlet and interior feed inlet are arranged on the side wall of feed zone 1.
As shown in Figure 1, the three-layer co-extruded spiral mould of PE tubing further includes spiral section 3 and discharging section, the feed zone 1, spiral shell Rotation section 3 and discharging section are sequentially connected;Wherein,
The spiral section 3 is radially disposed with internal layer conveyor screw 31, middle layer conveyor screw 32 and outer layer conveyor screw 33, described Internal layer conveyor screw 31 is connected with the interior feed inlet, and the middle layer conveyor screw 32 is connected with the middle charging aperture, described outer Layer conveyor screw 33 is connected with the outer feed inlet;
The discharging section is provided with for converging the material of internal layer conveyor screw 31, middle layer conveyor screw 32 and outer layer conveyor screw 33 out Discharge runner 4.
As shown in Figure 1, 2, 3, the feed zone 1 is provided with 12, two outer arcuate slot 11, inner arc slot accessibke porosities 13 and two The intermediate position of a inner via hole 14, the outer feed inlet and outer arcuate slot 11 is connected, and two ends of outer arcuate slot 11 are again each It is connected by an accessibke porosity 13 with the outer layer conveyor screw 33, the intermediate position phase of the interior feed inlet and inner arc slot 12 Connection, two ends of inner arc slot 12 are respectively connected by an inner via hole 14 with the internal layer conveyor screw 31 again.
As shown in Fig. 1,4, the internal layer conveyor screw 31 and outer layer conveyor screw 33 respectively have eight groups of helical flow path groups and two Three-level conveyor screw slot, every group of helical flow path group include two adjacent helical flow paths, each accessibke porosity 13 and each inner via hole 14 It is connected respectively by a three-level conveyor screw slot with corresponding four groups of helical flow path groups, each three-level conveyor screw slot has one First the second conveyor screw slot 52 of conveyor screw slot 51, two and four third conveyor screw slots 53, the first conveyor screw slot 51 with it is interior Through-hole 14 or accessibke porosity 13 are connected, and are connected respectively with two the second conveyor screw slots 52, and each second conveyor screw slot 52 divides It is not connected with two third conveyor screw slots 53, two spiral flows in each third conveyor screw slot 53 and one group of helical flow path group Road is respectively communicated with, so that circulation has material in each helical flow path.
As shown in Figure 1, the spiral section 3, which is provided with, compresses internal layer conveyor screw 31,32 and of middle layer conveyor screw out for converging The outlet of the material of outer layer conveyor screw 33, the discharging runner 4 are connected with the outlet.
As shown in Figure 1, the discharging section includes the releasing section 6 being sequentially connected, adjusts co-extrusion ring 7 and mouth mold 8, the mouth mold Be provided with plug 9 in 8, form the endpiece of discharging runner 4 between plug 9 and mouth mold 8, be provided on the adjustings co-extrusion ring 7 and The markings runner 71 that the discharging runner 4 is connected.
Embodiment two
As shown in Figure 1, a kind of charging distribution method of the three-layer co-extruded spiral mould of PE tubing, outer skin materials pass through outer wall runner 21 Charging, and enter feed zone 1 through outer feed inlet, middle layer material is fed by middle layer runner 22, and through middle charging aperture into Expect section 1, internal layer material is fed by inner wall runner 23, and enters feed zone 1 through interior feed inlet.
The three-layer co-extruded spiral mould of PE tubing is suitable for using the three-layer co-extruded spiral mould of PE tubing as described in embodiment one.
As shown in Figure 1, 2, 3, the outer skin materials of feed inlet enter outer arcuate slot 11 out, and are divided into two-way outer skin materials, Every road outer skin materials enter outer layer conveyor screw 33 through accessibke porosity 13, and the internal layer material of interior feed inlet enters inner arc slot 12 out, and It is divided into two-way internal layer material, every road internal layer material enters internal layer conveyor screw 31 through inner via hole 14;
The outer skin materials that every road enters outer layer conveyor screw 33 enter eight spiral flows of outer layer conveyor screw 33 through three-level conveyor screw slot Road carries out spiral distribution, and the internal layer material that every road enters internal layer conveyor screw 31 enters internal layer conveyor screw 31 through three-level conveyor screw slot Eight helical flow paths carry out spiral distribution, and the middle layer material of middle charging aperture enters the progress spiral distribution of middle layer conveyor screw 32 out;
Through outer layer conveyor screw 33 distribution after outer skin materials, through middle layer conveyor screw 32 distribution after middle layer material and through internal layer spiral Internal layer material after the distribution of body 31 converges compression in the exit of spiral section 3 and forms PE tubing;
PE tubing is squeezed out along discharging runner 4, successively through releasing section 6, adjusting co-extrusion ring 7 and by 8 and of mouth mold during extrusion The endpiece for the discharging runner 4 that plug 9 is formed;
Wherein, when PE tubing is overregulated co-extrusion ring 7, colour code material is fed by markings runner 71, and through adjusting co-extrusion ring 7 Markings are processed on PE tubing.Specifically, when every road outer skin materials or internal layer material are through three-level conveyor screw, first by the first spiral 51 one-to-two of body slot, then by 52 2 point four of the second conveyor screw slot, again by 53 4 point eight of third conveyor screw slot, be divided into outside eight paths Layer material or internal layer material, every path outer skin materials or internal layer material enter a helical flow path.
Working principle of the present invention is as follows:
The outer skin materials and internal layer material of the three-layer co-extruded spiral mould of PE tubing of the invention use independent feeding manner, make material Mobility evenly distributed, offer is more excellent, improves the quality of PE tubing;Outer skin materials or internal layer material divide two-way to enter spiral shell Section is revolved, when every road outer skin materials or internal layer material are through three-level conveyor screw, first by 51 one-to-two of the first conveyor screw slot, then by second 52 2 point four of conveyor screw slot, again by 53 4 point eight of third conveyor screw slot, be divided into eight path outer skin materials or internal layer material, every path Outer skin materials or internal layer material enter a helical flow path, so that circulation has material in each helical flow path, the present invention Helical flow path without dead angle so that pressure loss is low, melt temperature is low, when replacement has a color material can rapid cleaning, Also the quality of PE tubing is further ensured;The outer skin materials of outer wall runner 21 enter the progress spiral point of outer layer conveyor screw 33 out Match, the middle layer material of middle layer runner 22 enters the progress spiral distribution of middle layer conveyor screw 32 out, out the internal layer object of inner wall runner 23 Material enters internal layer conveyor screw 31 and carries out spiral distribution, conducive to the plasticizing of material;Through outer layer conveyor screw 33 distribution after outer skin materials, Middle layer material after the distribution of middle layer conveyor screw 32 and the internal layer material after the distribution of internal layer conveyor screw 31 are in the outlet of spiral section 3 Converge compression and form PE tubing in place;PE tubing is squeezed out along discharging runner 4, successively total through releasing section 6, adjusting during extrusion The endpiece for squeezing ring 7 and the discharging runner 4 formed by mouth mold 8 and plug 9, using the three-layer co-extruded spiral mould of PE tubing of the invention And charging distribution method, the compression strength and ring stiffness for the PE tubing produced greatly improve, each layer uniform feeding, wall thickness one It causes, improves the quality of tubing, while middle layer can use PE reclaimed materials, reduce production cost.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair Within bright protection scope.

Claims (10)

1. a kind of three-layer co-extruded spiral mould of PE tubing, it is characterised in that: it includes feed zone (1), outer wall runner (21), centre Laminar flow road (22) and inner wall runner (23), the feed zone (1) has outer feed inlet, middle charging aperture and interior feed inlet, described outer Wall runner (21) is connected with the outer feed inlet, and middle layer runner (22) is connected with the middle charging aperture, inner wall runner (23) it is connected with the interior feed inlet.
2. the three-layer co-extruded spiral mould of PE tubing according to claim 1, it is characterised in that: the outer feed inlet and it is interior into Material mouth is in the circumferential direction of feed zone (1) at a distance of 180 °.
3. the three-layer co-extruded spiral mould of PE tubing according to claim 2, it is characterised in that: further include spiral section (3) and Discharging section, the feed zone (1), spiral section (3) and discharging section are sequentially connected;Wherein,
The spiral section (3) is radially disposed with internal layer conveyor screw (31), middle layer conveyor screw (32) and outer layer conveyor screw (33), the internal layer conveyor screw (31) is connected with the interior feed inlet, the middle layer conveyor screw (32) and the middle charging aperture It is connected, the outer layer conveyor screw (33) is connected with the outer feed inlet;
The discharging section is provided with for converging internal layer conveyor screw (31), middle layer conveyor screw (32) and outer layer conveyor screw (33) out The discharging runner (4) of material.
4. the three-layer co-extruded spiral mould of PE tubing according to claim 3, it is characterised in that: feed zone (1) setting There are outer arcuate slot (11), inner arc slot (12), two accessibke porosities (13) and two inner via holes (14), the outer feed inlet and outer arc The intermediate position of shape slot (11) is connected, and two ends of outer arcuate slot (11) are again respectively by an accessibke porosity (13) and described outer Layer conveyor screw (33) is connected, and the intermediate position of the interior feed inlet and inner arc slot (12) is connected, inner arc slot (12) Two ends are respectively connected by an inner via hole (14) with the internal layer conveyor screw (31) again.
5. the three-layer co-extruded spiral mould of PE tubing according to claim 4, it is characterised in that: the internal layer conveyor screw (31) Respectively there are eight groups of helical flow path groups and two three-level conveyor screw slots with outer layer conveyor screw (33), every group of helical flow path group includes two Adjacent helical flow path, each accessibke porosity (13) and each inner via hole (14) respectively by three-level conveyor screw slot with it is corresponding Four groups of helical flow path groups are connected, and each three-level conveyor screw slot has a first conveyor screw slot (51), two the second conveyor screws Slot (52) and four third conveyor screw slots (53), the first conveyor screw slot (51) are connected with inner via hole (14) or accessibke porosity (13) It is logical, and be connected respectively with two the second conveyor screw slots (52), each second conveyor screw slot (52) respectively with two third spirals Body slot (53) is connected, and each third conveyor screw slot (53) is respectively communicated with two helical flow paths in one group of helical flow path group, So that circulation has material in each helical flow path.
6. the three-layer co-extruded spiral mould of PE tubing according to claim 5, it is characterised in that: spiral section (3) setting Have for converging the outlet for compressing the material of internal layer conveyor screw (31), middle layer conveyor screw (32) and outer layer conveyor screw (33) out, institute Discharging runner (4) is stated to be connected with the outlet.
7. the three-layer co-extruded spiral mould of PE tubing according to claim 6, it is characterised in that: the discharging section includes successively Connected releasing section (6), adjusting co-extrusion ring (7) and mouth mold (8), the mouth mold (8) is interior to be provided with plug (9), plug (9) and mouth The endpiece of discharging runner (4) is formed between mould (8), is provided on the adjusting co-extrusion ring (7) and is connected with the discharging runner (4) Logical markings runner (71).
8. a kind of charging distribution method of the three-layer co-extruded spiral mould of PE tubing, it is characterised in that:
Outer skin materials are fed by outer wall runner (21), and enter feed zone (1) through outer feed inlet, and middle layer material passes through middle layer Runner (22) charging, and enters feed zone (1) through middle charging aperture, and internal layer material is fed by inner wall runner (23), and in into Material mouth enters feed zone (1).
9. the charging distribution method of the three-layer co-extruded spiral mould of PE tubing according to claim 8, it is characterised in that:
The three-layer co-extruded spiral mould of PE tubing is suitable for using the three-layer co-extruded spiral mould of PE tubing as claimed in claim 7.
10. the charging distribution method of the three-layer co-extruded spiral mould of PE tubing according to claim 8, feature exist
In:
The outer skin materials of feed inlet enter outer arcuate slot (11) out, and are divided into two-way outer skin materials, every road outer skin materials, through outer Through-hole (13) enters outer layer conveyor screw (33), and the internal layer material of interior feed inlet enters inner arc slot (12) out, and is divided into two-way Layer material, every road internal layer material enter internal layer conveyor screw (31) through inner via hole (14);
The outer skin materials that every road enters outer layer conveyor screw (33) enter eight spiral shells of outer layer conveyor screw (33) through three-level conveyor screw slot Eddy flow road carries out spiral distribution, and the internal layer material that every road enters internal layer conveyor screw (31) enters internal layer spiral through three-level conveyor screw slot Eight helical flow paths of body (31) carry out spiral distribution, and the middle layer material of middle charging aperture enters middle layer conveyor screw (32) progress spiral shell out Rotation distribution;
Through outer layer conveyor screw (33) distribution after outer skin materials, through middle layer conveyor screw (32) distribution after middle layer material and through internal layer Internal layer material after conveyor screw (31) distribution converges compression in the exit of spiral section (3) and forms PE tubing;
PE tubing is squeezed out along discharging runner (4), successively through releasing section (6), adjusting co-extrusion ring (7) and by mouth during extrusion The endpiece for the discharging runner (4) that mould (8) and plug (9) are formed;
Wherein, when PE tubing is overregulated co-extrusion ring (7), colour code material is fed by markings runner (71), and through adjusting altogether It squeezes ring (7) and processes markings on PE tubing.
CN201811382614.5A 2018-11-20 2018-11-20 The three-layer co-extruded spiral mould of PE tubing and its charging distribution method Pending CN109291394A (en)

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CN202422872U (en) * 2012-01-16 2012-09-05 青岛青缆科技有限责任公司 Equipartition multi-color strip extrusion die
CN104275790A (en) * 2014-09-26 2015-01-14 北京化工大学 Three-layer co-extrusion plastic film blow molding machine head with combined type rotary core rod and layered two-channel temperature control device
CN105037881A (en) * 2015-07-13 2015-11-11 四川泰鑫实业发展有限责任公司 Composite plastic tube
CN204955399U (en) * 2015-09-15 2016-01-13 广东金明精机股份有限公司 Crowd film blowing mechanism altogether from mucosa three -layer
CN105415638A (en) * 2015-12-12 2016-03-23 重庆伟星新型建材有限公司 Novel front-placed co-extrusion ring
CN105690711A (en) * 2016-03-22 2016-06-22 仙桃永利医疗用品有限公司 Three-layer co-extrusion film blowing equipment
CN209176140U (en) * 2018-11-20 2019-07-30 常州金纬管道设备制造有限公司 The three-layer co-extruded spiral mould of PE tubing

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113103541A (en) * 2021-04-08 2021-07-13 安徽杰蓝特新材料有限公司 Graphene modified efficient heat-conducting ground source heat pump pipe and preparation method thereof

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