CN107351354A - The tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber is circumferentially orientated - Google Patents
The tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber is circumferentially orientated Download PDFInfo
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- CN107351354A CN107351354A CN201710557555.XA CN201710557555A CN107351354A CN 107351354 A CN107351354 A CN 107351354A CN 201710557555 A CN201710557555 A CN 201710557555A CN 107351354 A CN107351354 A CN 107351354A
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- handpiece body
- tube
- extruding machine
- machine head
- rotary sleeve
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Classifications
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- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C48/16—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
-
- 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
-
- 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
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
-
- 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
- B29L2009/00—Layered products
-
- 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
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber disclosed by the invention is circumferentially orientated, including head neck, mandrel holder, sub-material circle, rear handpiece body, preceding handpiece body, mouth mold, briquetting, plug, rotary sleeve, transmission mechanism and motor, plug one end and mandrel holder link support, rotary sleeve is fixed by bearing activity is located in the cavity of rear handpiece body, preceding handpiece body and is coaxially located at mandrel outer.Due to being provided with the adjustable rotary sleeve of rotating speed in tube extruding machine head, fibre-reinforced middle level and the compound pipe of pure material internal layer is set to receive intensive shear along the circumferential direction, reinforcing fiber therein and part macromolecular chain are also by original axial orientation, it is gradually converted into and is along the circumferential direction orientated, thus the circumferential strength of tubing is improved significantly, also filled up the fiber reinforcement that can be circumferentially orientated there has been no extrudable processing at present it is three-layer co-extruded go out structural tube process equipment blank.
Description
Technical field
The invention belongs to processing of high molecular material engineering device technique field, the special type being related in a kind of tube extrusion mould
Multi-layered composite pipe extrusion die, it is more particularly to a kind of to be used to prepare the three-layer plastic multiple tube that intermediate layer fiber is circumferentially orientated
Tube extruding machine head.The characteristics of tube extruding machine head is that internal layer and outer layer are pure plastics in the three-layer composite pipe for can make extrusion, and intermediate layer is
Fibre reinforced plastics, and the reinforcing fiber in intermediate layer can circumferentially distributed orientation.Can be in the constant situation of raw material using the head
Under, the bearing strength and service life of extruding pipe material are improved, or on the premise of maintaining intensity and life-span constant, make the wall of tubing
Thickness is thinned, and saves material.
Background technology
Easily there is the scared phenomenon in glass emergence on the surface, surface in existing individual layer fiberglass reinforced tubing, does not only result in surface matter
Amount is poor, can also give fluid conveyer belt to carry out larger resistance.In order to solve the problems, such as that individual layer fiberglass reinforced tubing is present, Ministry of Construction's hair
People's Republic of China's city-building professional standard of cloth：Fiber reinforcement polypropylene random copolymer composite tube (CJ/T258-
2007) it is atactic copolymerized polypropene (PP-R) material, to define a kind of internal layer with outer layer, and intermediate layer is glass fiber reinforcement PP-R
Composite it is three-layer co-extruded go out structure composite material pipe.Because of the surfaces externally and internally in the fibre reinforced plastics intermediate layer of the tubing
All covered by pure material layer, therefore it is exposed to avoid the occurrence of tubing surfaces externally and internally glass fibre, the scared phenomenon not only in surface.But
The fiberglass reinforced effect in this tubing intermediate layer is poor, does not reach the purpose for significantly improving tubing bearing strength.Tracing it to its cause is
Because the glass fibre and macromolecular chain that strengthen during extrusion molding are taken along the Extrusion Flow direction i.e. axial direction of tubing
To, simply improve the axial strength of tube wall, and the circumferential strength of tube wall is not improved significantly.And according to by interior ironed
The force analysis of wall tube material shows that the circumferential stress of tube wall is about twice of axial stress, i.e. the worst direction of tube wall strength
The precisely maximum direction of stress.Thus existing glass fiber reinforcement PP-R composites it is three-layer co-extruded go out structure composite pipe
The humidification of material fiber in actual use can not fully be brought into play.
As report at present can prepare above-mentioned three-layer plastic tubing co-extruding machine head design (Zhang Youxin,《Mould work
Industry》1996, NO.10. it is total 188) in describe a kind of mold design by two extruderses co-extrusion three-layer plastic tube wave character,
The head considers through type and the advantage and disadvantage of right-angle type tube extruding machine head, and combination is optimized, and its main parts size includes people
Word flow path connector, diversion sleeve, interlayer diversion sleeve, band damping current divider support and plug.The head can will pass through two extrusions
The resin of the same or different class after machine plasticizing extrusion, is transported in the runner that the head each distributes, passes through runner edge
It is simultaneously compound in front of mouth mold in head after even circumferential distribution to obtain three-layer plastic pipe.But the extruder head is due to design structure
Limited, when preparing above-mentioned fiber reinforcement atactic copolymerized polypropene three-layer composite pipe for extruding, because it can not possibly change centre
The flow direction of layer reinforcing fiber and polymer macromolecule chain, therefore can only prepare along the Extrusion Flow direction i.e. pipe of axial orientation
Material.
The content of the invention
The purpose of the present invention is the defects of presence for prior art and deficiency, there is provided one kind is used to prepare intermediate layer fiber
The tube extruding machine head for the three-layer plastic multiple tube being circumferentially orientated, the head can not only make the middle fibre-bearing of three-layer plastic multiple tube
Fiber and polymer macromolecule chain in enhancement layer can be circumferentially orientated, moreover it is possible to make the part macromolecular chain of inner plastic also edge
Circumferential orientation, to significantly improve the pressure-resistant performance of tubing.
A kind of tube extruding machine for being used to prepare the three-layer plastic multiple tube that intermediate layer fiber is circumferentially orientated provided by the invention
Head, it is characterised in that the tube extruding machine head includes head neck, mandrel holder, sub-material circle, rear handpiece body, preceding handpiece body, mouth mold, pressure
Block, plug, rotary sleeve, transmission mechanism and motor, head neck, mandrel holder, sub-material circle, rear handpiece body, preceding handpiece body, mouth mold and
Briquetting is integrated by connector horizontal connection successively；Plug one end is located at what is be sequentially connected with mandrel holder link support and cantilever
In the cavity that sub-material circle, rear handpiece body, preceding handpiece body and mouth mold are formed；Rotary sleeve by bearing activity it is fixed positioned at rear handpiece body,
In the cavity of preceding handpiece body linkage section, and certain interval is kept to be coaxially located at mandrel outer；Transmission mechanism is made up of sprocket wheel and chain,
Sprocket wheel has two, and one is connected in outside the rotary sleeve of tube extruding machine head, and another is fixed on the output shaft of motor, chain pass through with
The hole slot that the side of handpiece body II of the connecting place of handpiece body I is opened is connected with two sprocket wheels.
The inwall of rotary sleeve described in above tube extruding machine head can set the muscle of projection, can also be not provided with the muscle of projection,
But at least 2 raised muscle are preferably provided with, and it is circumferentially uniformly distributed along rotary sleeve, is applied to increase during rotary sleeve rotation
In the circumferential shear effect of plastic melt.The length of these raised muscle can be isometric with rotary sleeve, can also be slightly short, such as slightly short,
Then raised muscle deviation rotary sleeve entrance point.
Motor described in above tube extruding machine head is buncher, and the rotating speed of the motor can enter between 0~150 rev/min
Row step-less adjustment, to change the differently- oriented directivity of tubing reinforcing fiber and macromolecular and the degree of orientation.
Also include drawing material joint in above tube extruding machine head, drawing material joint there are two, a charging aperture for being connected to sub-material circle
On, another is connected on the charging aperture of the side of handpiece body II.
The extruder head is in use, a plastics pure material part for melting draws material joint by what is be connected with sub-material circle, through dividing
The annular channel of feed ring enters plug outer surface and is uniformly distributed the internal layer melt as extruding pipe material, while the glass melted increases
Strong material is shunted after entering head neck by the spreader of mandrel holder, passes sequentially through in mandrel holder, sub-material circle and rear handpiece body
The annular channel of setting is coated on outside the melt of inner plastic pure material, when two layers of melt flow drives rotation via motor, transmission mechanism
During the rotary sleeve turned, by circumferential shearing in annular channel that will be between rotary sleeve and plug, the circumferential shearing force is not only
The reinforcing fiber in that layer of melt of rotary sleeve and part macromolecular chain is set to change the axial direction formed in field of flow and take
To and turn into circumferential orientation, and also cause inner plastic pure material melt in part macromolecular chain also change the shape in field of flow
Into axial orientation and turn into circumferential orientation, and gradually compound turn into bimetallic tube base under stress；Double-deck pipe is in extrusion pressure
Promotion under operation to handpiece body II second half section when, by preceding handpiece body side draw material joint enter molten plastic pure material exist
Overflow when being flowed in the helicla flute of spiral distributor and be circumferentially uniformly distributed gradually vertically, and be coated on the pipe being orientated
Upper formation outer layer pipe, and under stress, three-layer pipe base is compounded to form with being orientated pipe, then after mouth mold regulation pipe wall thickness
Extrusion.The pipe of extrusion passes sequentially through vacuum sizing bosh cooling shaping, through pipe under the strength traction of pipe tractor
Material cutting machine is cut into the finished product tubing of certain length.
So as to the present invention compared with prior art, have the positive effect that：
1st, due to being provided with the adjustable rotary sleeve of rotating speed, the rotary sleeve and head plug in tube extruding machine head provided by the invention
Coaxially, when fibre-reinforced middle level and the compound pipe of pure material internal layer enter between plug and rotary sleeve, by circumferentially side
To intensive shear, thus reinforcing fiber and the original axial orientation of part macromolecular chain in extruding pipe material are changed, with turning
Speed improves and is gradually converted into and is along the circumferential direction orientated, and the maximum circumferential strength of stress obtains substantially when the obtained tubing is born internal pressure
Improve.
2nd, due to the present invention be also provided with tube extruding machine head on rotary sleeve inwall it is axially equally distributed convex along rotary sleeve
The muscle risen, thus the circumferential shear effect that fiber and plastic melt are put on during rotary sleeve rotation can be further enhanced, ensure institute
The circumferential strength for obtaining tubing gets a greater increase.
3rd, because the design of tube extruding machine head provided by the invention is to employ three layers of melt progressively compound mode, i.e., first exist
Mean fiber reinforced plastics melt is set to be compounded to form double-deck pipe with the pure plastic melt of internal layer in the first paragraph of handpiece body afterwards, then
Completing fiber and part macromolecular orientation in second segment turns into double-deck orientation pipe, completed at the 3rd section the pure plastic melt of outer layer with
Pipe has been orientated it and has been compounded to form final three-layer pipe base, recombination process is carried out under the high pressure in head in addition, thus is protected
The adhesive fastness of layer and interlayer is demonstrate,proved.
4th, because tube extruding machine head provided by the invention can extrude the fiber increasing processed fiber and plastics and can be circumferentially orientated
Strong composite it is three-layer co-extruded go out structure tubing, thus not only compensate for existing three layers of composite pipe being axially oriented and deposit
The defects of, and filled up the fiber reinforcement that can be circumferentially orientated there has been no extrudable processing at present it is three-layer co-extruded go out structure
The blank of the process equipment of tubing.
5th, because the motor used in tube extruding machine head provided by the invention is stepless time adjustment motor, the rotating speed of rotary sleeve can be made
Adjusted between 0~150 rev/min, thus the three-layer composite pipe material for preparing different circumferential orientation degree and differently- oriented directivity can be processed.
Brief description of the drawings
Fig. 1 is the front view structure diagrammatic cross-section of tube extruding machine head provided by the invention.
Fig. 2 is the front view structure diagrammatic cross-section of rotary sleeve in tube extruding machine head provided by the invention.
Fig. 3 is the side view structure diagrammatic cross-section of rotary sleeve in tube extruding machine head provided by the invention.
In figure, 1- head necks, 2- mandrel holders, 3- draws material joint, 4- sub-material circles, handpiece body after 5-, 6- bearings, 7- rotations
Cover, 8- sprocket wheels, 9- screws, handpiece body before 10-, 11- briquettings, 12- screws, 13- mouth molds, 14- adjusting screws, 15- plugs, 16-
Draw material joint, 17- pins, 18- screws, 19- chains, 20- motors, muscle raised 21-.
Fig. 4 is that rotary sleeve rotary rpm is that extrusion prepares (i.e. application examples under 30 revs/min in tube extruding machine head provided by the invention
2) petrographic microscope photo of composite pipe horizontal cross-section section, the wherein left side are the photo of circumferential direction, and the right is axially
The photo in direction.It can clearly observe that tubing intermediate layer glass is substantially circumferentially to be orientated from photo.
Fig. 5 is that rotary sleeve rotary rpm is that (i.e. Comparison study example 1) is squeezed under 0 rev/min in tube extruding machine head provided by the invention
Go out the petrographic microscope photo of the common composite pipe cross-sectional slices of preparation, the wherein left side is the photo of circumferential direction, the right
For the photo of axial direction.The glass that tubing can be clearly observed from photo is situation about being axially oriented.
Fig. 6 is that rotary sleeve rotary rpm is that extrusion prepares (i.e. application examples under 30 revs/min in tube extruding machine head provided by the invention
2) the Wide angle X-ray diffraction photo of composite pipe circumferencial direction.The performance of its Debye ring can be clearly observed from photo
For arc shaped, illustrate in rotary extrusion tubing, PPR crystal and macromolecular chain have obvious orientation in circumferencial direction.
Fig. 7 be in tube extruding machine head provided by the invention rotary sleeve rotary rpm be under 0 rev/min extrusion prepare (i.e. using pair
Ratio 1) composite pipe circumferencial direction Wide angle X-ray diffraction photo.Can clearly it be observed from photo a series of complete
Whole Debye rings, illustrate in common extruding pipe material, and PPR crystal and macromolecular chain are not orientated in circumferencial direction.
Embodiment
Extrusion device provided by the present invention is described further by way of example and in conjunction with the accompanying drawings, but it is given
Embodiment it is not intended that limiting the scope of the invention, those skilled in the art are according to the invention described above
Nonessential modifications and adaptations made by content and design philosophy should also belong to protection scope of the present invention.
Embodiment 1
As shown in figure 1, the tube extruding machine head tube extruding machine head that the present embodiment provides is by head neck 1, mandrel holder 2, sub-material circle
4th, rear handpiece body 5, preceding handpiece body 10, mouth mold 13, briquetting 11, plug 15, rotary sleeve 7, transmission mechanism and motor 20 are formed.
Wherein head neck 1, mandrel holder 2, sub-material circle 4, rear handpiece body 5, preceding handpiece body 10, mouth mold 13 and briquetting 11 be successively
It is that screw 9,12,18 and the horizontal connection of pin 17 are integrated by connector.Tightened with mandrel holder 2 using screw thread the one end of plug 15
Link support and cantilever are located in the cavity that the sub-material circle 4 being sequentially connected, rear handpiece body 5, preceding handpiece body 10 and mouth mold 13 are formed.
Rotary sleeve 7 is located in the cavity of rear handpiece body 5, the linkage section of preceding handpiece body 10 by the activity of bearing 6 is fixed, and keeps certain interval same
Axle position is in outside plug 15.In order to increase the circumferential shear effect that plastic melt is put on during rotary sleeve rotation, the present invention is also being revolved
At least 2 raised muscle 21 are provided with the inwall of pivoted housing 7, the present embodiment is 8, and this 8 raised muscle 21 are along rotary sleeve 7
Circumferentially it is uniformly distributed, its length can be same long with rotary sleeve, can also be slightly short, and the present embodiment is slightly short, therefore all raised muscle are equal
Rotary sleeve entrance point is inclined to, sees Fig. 2,3.The eccentric adjusting screw 14 by positioned at the outside of briquetting 11 of extruding pipe material is by adjusting mouth
The circumferential position of mould 13 is adjusted.Also draw material joint 3,6 including two in tube extruding machine head, one is drawn material joint 3 and is connected to sub-material
On the charging aperture of circle 4, another draws material joint 6 and is connected on the charging aperture of the side of handpiece body II 10.Transmission mechanism is by the He of sprocket wheel 8
Chain 19 is formed, and sprocket wheel 8 has two, and outside a rotary sleeve 7 for being connected in tube extruding machine head, another is fixed on the output of motor 20
On axle, chain 19 passes through the hole slot opened with the side of handpiece body II 10 of the connecting place of handpiece body I 5 to be connected with two sprocket wheels 8, the present embodiment
Motor select stepless speed-regulating motor, the motor can carry out step-less adjustment between 0~150 rev/min.
Embodiment 2
As shown in figure 1, the tube extruding machine head that the present embodiment provides is by head neck 1, mandrel holder 2, sub-material circle 4, rear head
Body 5, preceding handpiece body 10, mouth mold 13, briquetting 11, plug 15, rotary sleeve, 7 transmission mechanisms and motor 20.The present embodiment and embodiment
1 difference is that the raised muscle 21 that is set on the inwall of rotary sleeve is 2, remaining because identical with embodiment 1, therefore
Omit and do not state.
Application examples 1
This application embodiment is the tube extruding machine head provided using the embodiment of the present invention 1, is 15 in head rotating set rotating speed
What under conditions of rev/min prepared by processing is that based intermediate layer is compound for three layers of the atactic copolymerized polypropene that glass is circumferentially orientated
Pipe, i.e. internal layer are pure atactic copolymerized polypropene layer, and intermediate layer is the atactic copolymerized polypropene layer of glass fiber reinforcement, and outer layer is pure
The three-layer composite pipe of atactic copolymerized polypropene layer.The external diameter of the pipe is Φ 75mm, and tube wall gross thickness is 6.8mm, and wherein internal layer is pure
Atactic copolymerized polypropene thickness degree is 2.3mm, and intermediate layer fiberglass reinforced atactic copolymerized polypropene thickness degree is 2.5mm, and outer layer is pure
Atactic copolymerized polypropene thickness degree is 2mm.Resulting three-layer multiple tube circumferential strength 35.4MPa after tested, burst pressure
6.27MPa, 41.6% and 62.4% is respectively increased relative to the tubing of Comparison study example 1.
Application examples 2
The application example is the tube extruding machine head provided using the embodiment of the present invention 1, is 30 revs/min in head rotating set rotating speed
Under conditions of to process the based intermediate layer of preparation be the atactic copolymerized polypropene three-layer composite pipe that is circumferentially orientated of glass, it is tied
Structure, external diameter, tube wall gross thickness and each thickness degree are identical with application examples 1, therefore omit and do not state.Resulting three-layer multiple tube is all after tested
To intensity 36.3MPa, burst pressure 6.73MPa, 45.2% He has been respectively increased relative to the tubing of Comparison study example 1
74.4%.
Application examples 3
The application example is the tube extruding machine head provided using the embodiment of the present invention 1, is 60 revs/min in head rotating set rotating speed
Under conditions of to process the based intermediate layer of preparation be the atactic copolymerized polypropene three-layer composite pipe that is circumferentially orientated of glass, it is tied
Structure, external diameter, tube wall gross thickness and each thickness degree are identical with application examples 1, therefore omit and do not state.Resulting three-layer multiple tube is all after tested
To intensity 39.44MPa, burst pressure 7.4MPa, 57.8% He has been respectively increased relative to the tubing of Comparison study example 1
91.7%.
Application examples 4
This application embodiment is the tube extruding machine head provided using the embodiment of the present invention 1, is 60 in head rotating set rotating speed
The based intermediate layer that preparation is processed under conditions of rev/min is the atactic copolymerized polypropene three-layer composite pipe that glass is circumferentially orientated.
Unlike application examples 1, the external diameter of the application example composite pipe is Φ 63, and tube wall gross thickness is 5.8mm, wherein the pure nothing of internal layer
Rule COPP thickness degree is 2mm, and intermediate layer fiberglass reinforced atactic copolymerized polypropene thickness degree is 2.1mm, and outer layer is pure random
COPP thickness degree is 1.7mm.Resulting three-layer multiple tube circumferential strength 35.5MPa, burst pressure 6.96MPa after tested,
46.6% and 86.1% has been respectively increased relative to the tubing of Comparison study example 2.
Comparison study example 1
This application comparative example is also the tube extruding machine head provided using the embodiment of the present invention 1, but is turned in head rotating set
Speed processes preparation based intermediate layer under conditions of being 0 rev/min is that three layers of the atactic copolymerized polypropene that glass is axially oriented is multiple
Close pipe, external diameter, tube wall gross thickness and each thickness degree of the atactic copolymerized polypropene three-layer composite pipe of the fiberglass reinforced with application
Example 1 is identical, therefore omits and do not state.The internal layer of resulting three-layer multiple tube and the atactic copolymerized polypropene macromolecular in intermediate layer and enhancing glass
Glass fiber is not orientated circumferentially；Circumferential strength 25MPa after tested, burst pressure 3.86MPa.
Comparison study example 2
This application comparative example is also the tube extruding machine head provided using the embodiment of the present invention 1, but is turned in head rotating set
Speed processes preparation based intermediate layer under conditions of being 0 rev/min is that three layers of the atactic copolymerized polypropene that glass is axially oriented is multiple
Close pipe, external diameter, tube wall gross thickness and each thickness degree of the atactic copolymerized polypropene three-layer composite pipe of the fiberglass reinforced with application
Example 3 is identical, therefore omits and do not state.The internal layer of resulting three-layer multiple tube and the atactic copolymerized polypropene macromolecular in intermediate layer and enhancing glass
Glass fiber is not orientated circumferentially；Circumferential strength 24.3MPa after tested, burst pressure 3.74MPa.
Claims (4)
- A kind of 1. tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber is circumferentially orientated, it is characterised in that the tube extruding machine head Including head neck (1), mandrel holder (2), sub-material circle (4), rear handpiece body (5), preceding handpiece body (10), mouth mold (13), briquetting (11), plug (15), rotary sleeve (7), transmission mechanism and motor (20), head neck (1), mandrel holder (2), sub-material circle (4), after Handpiece body (5), preceding handpiece body (10), mouth mold (13) and briquetting (11) are integrated by connector horizontal connection successively；Plug (15) One end is located at the sub-material circle (4), rear handpiece body (5), the preceding handpiece body that are sequentially connected with mandrel holder (2) link support and cantilever (10) and in the cavity of mouth mold (13) formation；Rotary sleeve (7) is fixed positioned at rear handpiece body (5), preceding handpiece body by bearing (6) activity (10) in the cavity of linkage section, and certain interval is kept to be coaxially located at plug (15) outside；Transmission mechanism is by sprocket wheel (8) and chain (19) form, sprocket wheel (8) there are two, and outside, another is fixed on motor (20) to a rotary sleeve (7) for being connected in tube extruding machine head On output shaft, chain (19) passes through the hole slot and two sprocket wheels (8) that preceding handpiece body (10) side with rear handpiece body (5) connecting place is opened It is connected.
- 2. the tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber according to claim 1 is circumferentially orientated, it is special Sign is to be provided with least 2 raised muscle (21), the raised muscle described in the tube extruding machine head on the inwall of rotary sleeve (7) (21) it is circumferentially to be uniformly distributed along rotary sleeve (7).
- 3. the tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber according to claim 1 or 2 is circumferentially orientated, its It is buncher to be characterised by the motor (20) described in the tube extruding machine head, and the rotating speed of the motor can be between 0~150 rev/min Carry out step-less adjustment.
- 4. the tube extruding machine head for the three-layer plastic multiple tube that intermediate layer fiber according to claim 1 or 2 is circumferentially orientated, its It is characterised by the tube extruding machine head also including drawing material joint, drawing material joint there are two (3,6), and one of them draws material joint (3) even It is connected on the charging aperture of sub-material circle (4), another draws material joint (6) and is connected on the charging aperture of preceding handpiece body (10) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557555.XA CN107351354B (en) | 2017-07-10 | 2017-07-10 | Tube extruding machine head of three-layer plastic composite tube with middle layer fiber oriented along circumferential direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557555.XA CN107351354B (en) | 2017-07-10 | 2017-07-10 | Tube extruding machine head of three-layer plastic composite tube with middle layer fiber oriented along circumferential direction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107351354A true CN107351354A (en) | 2017-11-17 |
| CN107351354B CN107351354B (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710557555.XA Active CN107351354B (en) | 2017-07-10 | 2017-07-10 | Tube extruding machine head of three-layer plastic composite tube with middle layer fiber oriented along circumferential direction |
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| CN (1) | CN107351354B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228238A (en) * | 2018-08-15 | 2019-01-18 | 广东联塑科技实业有限公司 | A kind of double orientation plastic pipe extruder head |
| CN110126230A (en) * | 2019-04-08 | 2019-08-16 | 江苏远通塑胶制品有限公司 | Three layers of composite copolymerization polypropylene composite pipe and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228238A (en) * | 2018-08-15 | 2019-01-18 | 广东联塑科技实业有限公司 | A kind of double orientation plastic pipe extruder head |
| CN110126230A (en) * | 2019-04-08 | 2019-08-16 | 江苏远通塑胶制品有限公司 | Three layers of composite copolymerization polypropylene composite pipe and preparation method thereof |
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| CN107351354B (en) | 2023-07-04 |
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