CN106976218A - The minor caliber pipe extruding forming method and device of a kind of weldless trace - Google Patents
The minor caliber pipe extruding forming method and device of a kind of weldless trace Download PDFInfo
- Publication number
- CN106976218A CN106976218A CN201710252059.3A CN201710252059A CN106976218A CN 106976218 A CN106976218 A CN 106976218A CN 201710252059 A CN201710252059 A CN 201710252059A CN 106976218 A CN106976218 A CN 106976218A
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- China
- Prior art keywords
- plug
- barrel
- endoporus
- screw
- support cap
- 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.)
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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
- B29C48/025—General arrangement or layout of plant
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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
- B29C48/03—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
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/397—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using a single screw
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/51—Screws with internal flow passages, e.g. for molten material
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of minor caliber pipe extruding forming method of weldless trace and device.The cored screw of the device is arranged in the endoporus of barrel, and the hollow drive sleeve gap of one end and reduction box is connected with merga pass flat key, and the other end is stretched into support cap；Plug is concentrically disposed in the endoporus of cored screw, endoporus and the plug formation annular space of cored screw；Plug is arranged on support cap, and plug Extension support lid is connected with plug drive device；Spreader is processed on the plug in support cap, spreader is the two section cones coaxial with plug.Complete machine structure of the present invention is whole to be gathered, capacity usage ratio is high, tubing ring intensity is improved, and reduces the wall thickness of tubing article on the premise of advantageously ensuring that product properties, and " white pollution " is reduced while reducing cost.
Description
Technical field
The present invention relates to polymer and its advanced forming processing technology field of composite, more particularly to a kind of weldless trace
Minor caliber pipe extruding forming method and device, belong to polymer material molding process equipment field.
Background technology
Compared with metal tube and pipe of cement, plastic pipe has specific strength height, good corrosion resistance, shock resistance and stretch-resistance
Can be good the advantages of, simultaneously because plastic pipe inner wall smooth, coefficient of friction are small, flow resistance is low, convenient transportation, install simple etc.
Advantage and be widely used in all trades and professions.
Tube extrusion shaping have the advantages that efficiency high, production process continuously, to material wide adaptability, be current plastic tube
The most frequently used forming method of material.Material melts modeling in the plasticizing system being made up of screw rod and barrel in tube extrusion forming process
Change, pass sequentially through shaping equipment, cooling device, draw-gear, cutter device and obtain product.Due to squeezing for generally using at present
Go out in head to exist spreader and support so that multiply melt is produced when melt passes through spreader or its support and then is converged again,
The differences such as temperature, pressure due to multiply melt and can not merge to form defect completely in interface, produced in tube surfaces molten
Lapping defect, reduces the ring intensity and presentation quality of tubing article, significantly limit the application as plastic pressure tubing.
Domestic and foreign scholars and manufacturing enterprise take many different methods to reduce weld mark to the negative of product properties
Influence, conventional method mainly includes：1. the mobility of melt is improved；2. the liquid form of melt in head is changed；3. optimize
The planform and size of head.United States Patent (USP) US5468808 discloses one kind and is used in conjunction with subtracting by different molecular weight polypropylene
The method of few weld mark, wherein low-molecular-weight polypropylene play a part of improving melt flowability, and high molecular weight polypropylene
Necessary mechanical property is provided；Chinese patent CN 201410497381 by by with different mobile performances polypropylene mix,
The intensity of weld mark is significantly improved, pipe performance is improved；Chinese patent CN 200810045785.9 passes through head internal orifice
Mould produces relative rotary motion with plug and produces shear action to melt, while distinguishing cooling and shaping to the inside and outside wall of tubing, improves
Product condensed state structure is regulated and controled while weld mark strength, product properties is improved.Chinese patent CN
The melt come out from extruder is divided into four strands of melts by 201110100814.9 by current divider according to the thickness requirement of tubing, often
Stock melt conveys so as to which in the formation of the diverse location of tubing, staggeredly weld mark realizes tubing self-reinforcing respectively.
The above method reduces influence of the weld mark to product properties to a certain extent, but weld mark is still objective is stored in
In product, once because weld mark region is failed, whole tubing will be scrapped.
It thus is seen that the deficiency existed for current plastic pipe molding method and apparatus, develops a kind of weldless trace
Tube extrusion forming method has great importance with device to plastic tube extrusion shaping.
The content of the invention
Cause it is an object of the invention to overcome the presence of weld mark in current common pipe materials product extrusion forming process
Product ring low intensity, surface quality difference etc. are not enough there is provided a kind of small-bore plastic pipes extruding forming method of weldless trace,
Tube wall thickness, reduction production cost, the service life for extending tubing and reduction are reduced while improving product properties, and " white is dirty
Dye ".
Another object of the present invention is to provide a kind of high performance pipe extrusion molding apparatus for being used to realize the above method.
The object of the invention is achieved through the following technical solutions：
A kind of minor caliber pipe extrusion molding apparatus of weldless trace, including frame, motor, fountain cooling device, rolling
Wheel type tractor structure, barrel, cored screw, plug, spreader and support cap；Frame two ends are respectively equipped with reduction box and plug drives
Dynamic device；Motor is connected by shaft coupling with reduction box；Hollow drive sleeve is provided with reduction box；One end of barrel, which is arranged on, slows down
In the one side of case end cap, fountain cooling device and roller type haulage gear are sequentially coaxially installed in the another side of end cover of reduction box
Outside；Barrel is provided with hopper, and hopper is connected with the endoporus of barrel；The hollow drive sleeve of the endoporus of barrel and reduction box is coaxial；
The other end of barrel is connected with support cap；Cored screw is arranged in the endoporus of barrel, the hollow drive sleeve of one end and reduction box
Gap is connected with merga pass flat key, and the other end is stretched into support cap；Plug is concentrically disposed in the endoporus of cored screw, hollow spiral shell
The endoporus of bar and plug formation annular space；Plug is arranged on support cap, plug Extension support lid and plug drive device
Connection；Spreader is processed on the plug in support cap, spreader is the two section cones coaxial with plug.
It is deep further to realize the object of the invention, it is preferable that the plug is arranged on support cap by deep groove ball bearing
The outside of ditch ball bearing is provided with gland；The inner side of deep groove ball bearing is provided with heat insulating mattress.
Preferably, the spiral shell rib of cored screw is similar with common screw, and endoporus is step structure, close to the endoporus of screw head
Diameter is smaller, and the shaping equipment of tubing is constituted with plug, and other end diameter of bore is larger.
Preferably, the fountain cooling device is mainly made up of case lid, shower nozzle, guide wheel, tank tower and casing；Casing and case
Lid composition bosh, multiple shower nozzle intervals are arranged on case lid, and guide wheel is provided with casing.
Preferably, roller type haulage gear it is main by hitch frame, driving wheel and driven wheels into；Driving wheel and driven pulley are set
On hitch frame, the passage of tubing article is formed between driving wheel and driven pulley.
Preferably, resistance heater is fixed by screws on the outer wall of barrel, and its fixed position corresponds to plasticizing system respectively
Solid conveying section, melt zone and the metering section of system.
Preferably, one end of barrel is connected by screw in the one side of end cover of reduction box；The other end of barrel with
Support cap is connected by screw.
Preferably, the spreader surface is smooth.
Using the small-bore plastic pipes extruding forming method of the weldless trace of described device：It is hollow when motor is rotated
Screw rod rotates under the drive of shaft coupling and decelerator, and the spiral shell rib of cored screw and the endoporus formation plasticizing system of barrel will come from
The material melts plasticizing of hopper, and quantify, conveyed to screw head direction to constant temperature, level pressure；Under melt pressure effect, melt leads to
Cross the spreader on plug to enter in the annular space being made up of with plug the endoporus of screw rod, shape is formed in annular space
Shape and size and the basically identical pipe of product；Realize that the continuous of pipe is squeezed under the traction of melt pressure roller type haulage gear
Go out；Temperature Distribution on cored screw gradually reduces for the temperature from screw head to feed zone, pipe obtain sizing with it is tentatively cold
But, subsequent pipe enters further cools down in fountain cooling device, obtains tubing article.
In the small-bore plastic pipes extruding forming method of weldless trace of the present invention, melt when tube extrusion direction is with plasticizing
Flow direction is on the contrary, melt needs not move through the support of core rod supporting device, and the tube extrusion for realizing weldless trace is molded.
It is of the invention compared with existing tube extrusion forming method and device, have the following advantages that：
1st, the axial contraction in length of the tube extrusion device of weldless trace, device structure is more compact, and floor space is small, and factory building is thrown
Provide cost low；
2nd, the tube extrusion device of weldless trace effectively increases the ring intensity of tubing article, is ensureing product properties
Under the premise of be conducive to reduce tubing wall thickness, reduce plastic material consumption, reduce white pollution while reducing cost；
3rd, by the relative motion of screw rod and plug, the combination shearing deformation of intensity controlled is reversely produced in circumference to pipe
Effect, so as to regulate and control to the crystal habit and orientation texture of tubing, realizes the raising to product properties.
Brief description of the drawings
Fig. 1 is the structural representation of the minor caliber pipe extrusion molding apparatus of weldless trace.
Fig. 2 is without support plug and end cap attachment structure schematic diagram.
Fig. 3 is the structural representation of cored screw.
Fig. 4 be in Fig. 3 A-A to sectional view.
Fig. 5 is the structural representation of fountain cooling device.
Fig. 6 is the structural representation of roller type haulage gear.
Shown in figure：Frame 1, motor 2, shaft coupling 3, reduction box 4, fountain cooling device 5, roller type haulage gear 6,
Hollow drive sleeve 7, hopper 8, barrel 9, cored screw 10, heater 11, plug 12, spreader 13, support cap 14, plug driving
Device 15, heat insulating mattress 16, deep groove ball bearing 17, gland 18, melt 19, pipe 20, case lid 21, shower nozzle 22, guide wheel 23, tank tower
24th, casing 25, hitch frame 26, driving wheel 27, driven pulley 28 and tubing article 29.
Embodiment
To more fully understand the present invention, the present invention is described further below in conjunction with the accompanying drawings, but application claims are protected
The scope of shield is not limited to the scope of embodiment statement.
As shown in Figure 1, 2, a kind of minor caliber pipe extrusion molding apparatus of weldless trace, including frame 1, motor 2, spray
Formula cooling device 5, roller type haulage gear 6, barrel 9, cored screw 10, plug 12, spreader 13 and support cap 14；Frame 1
Two ends are respectively equipped with reduction box 4 and plug drive device 15；Motor 2 is connected by shaft coupling 3 with reduction box 4；Set in reduction box 4
There is hollow drive sleeve 7, hollow drive sleeve 7 is the output shaft of reduction box；One end of barrel 9 is connected by screw installed in reduction box
In the one side of 4 end caps, fountain cooling device 5 and roller type haulage gear 6 are sequentially coaxially installed in the another of the end cap of reduction box 4
On the outside of face；Barrel 9 is provided with hopper 8, and hopper 8 is connected with the endoporus of barrel 9；The endoporus of barrel 9 and the hollow transmission of reduction box 4
Cover 7 coaxial；The other end of barrel 9 is connected by screw with support cap 14；Cored screw 10 is arranged in the endoporus of barrel 9, and one
End is connected with the gap of hollow drive sleeve 7 of reduction box 4 with merga pass flat key, and the other end is stretched into support cap 14；Cored screw
The endoporus formation plasticizing system of 10 spiral shell rib and barrel 9；Plug 12 is concentrically disposed in the endoporus of cored screw 10, cored screw 10
Endoporus and plug 12 formation annular space, be the shaping equipment of pipe 20；Plug 12 is arranged on support cap 14, plug 12
Extension support lid 14 is connected with plug drive device 15；Plug 12 is preferably arranged on support cap 14 by deep groove ball bearing 17,
The outside of deep groove ball bearing 17 is provided with gland 18, and deep groove ball bearing 17 is fixed on support cap 14 with gland 18；Deep-groove ball axle
The inner side for holding 17 is provided with heat insulating mattress 16, reduces heat by heat insulating mattress 16 and is transmitted to the direction of plug drive device 15.Positioned at supporting
Spreader 13 is processed on plug 12 in lid 14, spreader 13 is the two section cones coaxial with plug 12：Melt is in spreader
13 outer surface promotes the heat exchange of melt and barrel with forming thin melt layer in the endoporus of barrel 9；Simultaneously because molten
The change of body cross-sectional flow area produces compression/expansion effect to melt, improves plasticizing mixed effect.Due to the table of spreader 13
Face is smooth, and plug 12 is arranged on support cap 14, without the support class zero that plug is supported in conventional tube extrusion shaped device
Part, will not form a plurality of fluids when melt flows through spreader 13, thus will not produce weld mark.
Resistance heater 11 is fixed by screws on the outer wall of barrel 9, and its fixed position corresponds to plasticizing system respectively
Solid conveying section, melt zone and metering section, coordinate with control system and meet solid conveying section in material plasticizing transport process, melting
The temperature requirement of section and metering section.
As shown in Figures 3 and 4, the spiral shell rib of cored screw 10 is similar with common screw, and endoporus is step structure, close to screw rod
The diameter of bore of head is smaller, and the shaping equipment of tubing is constituted with plug, is obtained and tubing article shape, chi by the shaped device
Very little essentially identical pipe 20；Other end diameter of bore is larger, for reducing the frictional force of endoporus and pipe while avoiding pipe
Heat is transmitted to screw rod in cooling procedure, it is ensured that plasticizing efficiency and stability, and pipe is shaped and tentatively in shaping equipment
Cooling.
As shown in figure 5, fountain cooling device 5 is main by 25 groups of case lid 21, shower nozzle 22, guide wheel 23, tank tower 24 and casing
Into；Casing 25 constitutes bosh with case lid 21, and multiple intervals of shower nozzle 22 are arranged on case lid 21, and guide wheel is provided with casing 25
23, for supporting and guiding pipe 20；The water come out from shower nozzle 22 is further cooled down to pipe 20；Casing 25 is located at case
On frame 24.
As shown in fig. 6, roller type haulage gear 6 is mainly made up of hitch frame 26, driving wheel 27 and driven pulley 28；Driving wheel 27
It is arranged on driven pulley 28 on hitch frame 26, the passage of tubing article 29 is formed between driving wheel 27 and driven pulley 28；Pass through master
The tubing article 29 for acting as tentatively having shaped of the frictional force of driving wheel 27 provides certain tractive force and hauling speed, realizes product
Traction.Pipe enters in fountain cooling device 5 forms tubing article 29 after further cooling；Pipe 20 simply and tubing system
The shape of product 29 and size are essentially identical.
The minor caliber pipe extrusion molding process of weldless trace is as follows：When motor 2 is rotated, cored screw 10 is in shaft coupling
3 and decelerator 4 drive under rotate, the endoporus formation plasticizing system of the spiral shell rib of cored screw 10 and barrel 9 is by from hopper 8
Material melts are plastified, and are quantified, conveyed to screw head direction to constant temperature, level pressure；In the presence of melt pressure, melt 17 passes through
Spreader 13 on plug 12 is entered in the annular space being made up of the endoporus and plug 12 of screw rod 10, in annular space
Form shape and size and the basically identical pipe 20 of product；Pipe is realized under the traction of melt pressure roller type haulage gear 6
The continuous extrusion of base；Because the Temperature Distribution on cored screw 10 gradually reduces for the temperature from screw head to feed zone, thus
Pipe obtains sizing and preliminary cooling, and subsequent pipe enters further to be cooled down in fountain cooling device 5, obtain shape, size,
Performance all meets the tubing article 29 of use requirement, and the product stacked and needed finally is cut again.
Reference picture 1, Fig. 2 can be seen that from unlike conventional tube extrusion forming method and equipment, one side plug 12
And spreader 13 is fixed on support cap 14 by bearing, thus plug is supported without support parts；On the other hand plastify
When melt along screw channel to screw head direction flow and pipe is moved from screw head to screw rod tail, tube extrusion side in forming process
Melt flows are in opposite direction during to plasticizing, and a plurality of fluids will not be formed when melt flows through spreader 13, thus forming pipe
Shi Buhui formation weld marks, it is achieved thereby that the extrusion molding of weldless trace tubing.Weldless trace, is effectively carried in tubing of the present invention
The high ring intensity of tubing article, can reduce the wall thickness of tubing, while reducing cost on the premise of product properties is ensured
Reduce white pollution.
Meanwhile, the present invention takes full advantage of space, the axial contraction in length of tube extrusion device, device structure is more compact,
Factory building cost of investment is low；The relative motion of shaping cover (cored screw) endoporus and plug of the present invention, is reversely produced to pipe in circumference
The shearing deformation effect of raw intensity controlled, is conducive to the regulation and control of tubing condensed state structure, enriches the regulation and control of tubing article performance
Means.
Plug of the present invention can be rotated by motor driving in screw rod endoporus, plug and screw rod rotating Vortex or reverse rotation
So as to which the circumference in tube blank inner wall reversely produces the controllable shearing deformation of shear strength, the condensed state structure of polymer pipe is entered
Row regulation and control, improve the intensity especially ring intensity of tubing.
Claims (9)
1. a kind of minor caliber pipe extrusion molding apparatus of weldless trace, it is characterised in that cold including frame, motor, fountain
But device, roller type haulage gear, barrel, cored screw, plug, spreader and support cap；Frame two ends are respectively equipped with deceleration
Case and plug drive device；Motor is connected by shaft coupling with reduction box；Hollow drive sleeve is provided with reduction box；One end of barrel
In the one side of end cover of reduction box, fountain cooling device and roller type haulage gear are sequentially coaxially arranged on reduction box end
On the outside of the another side of lid；Barrel is provided with hopper, and hopper is connected with the endoporus of barrel；The endoporus of barrel and the hollow biography of reduction box
Dynamic set is coaxial；The other end of barrel is connected with support cap；Cored screw is arranged in the endoporus of barrel, the sky of one end and reduction box
Heart drive sleeve gap is connected with merga pass flat key, and the other end is stretched into support cap；Plug is concentrically disposed in the endoporus of cored screw
In, endoporus and the plug formation annular space of cored screw；Plug is arranged on support cap, plug Extension support lid and plug
Drive device is connected；Spreader is processed on the plug in support cap, spreader is the two section cones coaxial with plug.
2. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that described
Plug is arranged on support cap by deep groove ball bearing, and the outside of deep groove ball bearing is provided with gland；Set on the inside of deep groove ball bearing
There is heat insulating mattress.
3. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that hollow
The spiral shell rib of screw rod is similar with common screw, and endoporus is step structure, and the diameter of bore close to screw head is smaller, is constituted with plug
The shaping equipment of tubing, other end diameter of bore is larger.
4. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that described
Fountain cooling device is mainly made up of case lid, shower nozzle, guide wheel, tank tower and casing；Casing constitutes bosh with case lid, multiple
Shower nozzle interval is arranged on case lid, and guide wheel is provided with casing.
5. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that roller
Formula haulage gear it is main by hitch frame, driving wheel and driven wheels into；Driving wheel and driven pulley are arranged on hitch frame, driving wheel and
The passage of tubing article is formed between driven pulley.
6. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that resistance
Heater is fixed by screws on the outer wall of barrel, and its fixed position corresponds to the solid conveying section of plasticizing system, melting respectively
Section and metering section.
7. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that barrel
One end be connected by screw in the one side of end cover of reduction box；The other end of barrel is connected by screw with support cap.
8. the small-bore plastic pipes extrusion molding apparatus of weldless trace according to claim 1, it is characterised in that described
Spreader surface is smooth.
9. requiring the small-bore plastic pipes extruding forming method of the weldless trace of any one of 1-8 described devices using profit, it is special
Levy and be, when motor is rotated, cored screw rotates under the drive of shaft coupling and decelerator, the spiral shell rib and barrel of cored screw
Endoporus formation plasticizing system the material melts from hopper are plastified, and quantitative, constant temperature, level pressure it is defeated to screw head direction
Send；Under melt pressure effect, melt enters the ring being made up of the endoporus of screw rod with plug by the spreader on plug
In shape space, shape and size and the basically identical pipe of product are formed in annular space；In the traction of melt pressure roller type
The continuous extrusion of pipe is realized under the traction of mechanism；Temperature Distribution on cored screw for the temperature from screw head to feed zone by
Gradually reduce, pipe obtains sizing and preliminary cooling, subsequent pipe enters further to be cooled down in fountain cooling device, obtains tubing
Product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710252059.3A CN106976218B (en) | 2017-04-18 | 2017-04-18 | Extrusion molding method and device for small-caliber pipe without weld mark |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710252059.3A CN106976218B (en) | 2017-04-18 | 2017-04-18 | Extrusion molding method and device for small-caliber pipe without weld mark |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106976218A true CN106976218A (en) | 2017-07-25 |
| CN106976218B CN106976218B (en) | 2023-04-25 |
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| CN201710252059.3A Active CN106976218B (en) | 2017-04-18 | 2017-04-18 | Extrusion molding method and device for small-caliber pipe without weld mark |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322900A (en) * | 2017-08-09 | 2017-11-07 | 青岛威尔塑料机械有限公司 | A kind of plastic extrusion mechanism and its extrusion method |
| CN109228246A (en) * | 2018-11-07 | 2019-01-18 | 开平市庆丰塑料制品有限公司 | Cooling device is used in a kind of production of plastic tube |
| CN110948815A (en) * | 2019-12-21 | 2020-04-03 | 武汉亚联塑业有限公司 | Sizing device for PVC (polyvinyl chloride) pipe |
| CN114714590A (en) * | 2022-04-12 | 2022-07-08 | 南京航空航天大学 | Extrusion forming device and process for Nafion pipe |
| CN115195072A (en) * | 2022-05-25 | 2022-10-18 | 山东陆宇塑胶有限公司 | Molding structure is used in production of polypropylene seamless pipe |
| CN116352091A (en) * | 2023-04-28 | 2023-06-30 | 华中科技大学 | Titanium alloy pipe and preparation method and system thereof |
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| CN107322900A (en) * | 2017-08-09 | 2017-11-07 | 青岛威尔塑料机械有限公司 | A kind of plastic extrusion mechanism and its extrusion method |
| CN109228246A (en) * | 2018-11-07 | 2019-01-18 | 开平市庆丰塑料制品有限公司 | Cooling device is used in a kind of production of plastic tube |
| CN110948815A (en) * | 2019-12-21 | 2020-04-03 | 武汉亚联塑业有限公司 | Sizing device for PVC (polyvinyl chloride) pipe |
| CN110948815B (en) * | 2019-12-21 | 2021-07-13 | 武汉亚联塑业有限公司 | Sizing device for PVC (polyvinyl chloride) pipe |
| CN114714590A (en) * | 2022-04-12 | 2022-07-08 | 南京航空航天大学 | Extrusion forming device and process for Nafion pipe |
| CN114714590B (en) * | 2022-04-12 | 2023-04-07 | 南京航空航天大学 | Extrusion forming device and process for Nafion pipe |
| CN115195072A (en) * | 2022-05-25 | 2022-10-18 | 山东陆宇塑胶有限公司 | Molding structure is used in production of polypropylene seamless pipe |
| CN116352091A (en) * | 2023-04-28 | 2023-06-30 | 华中科技大学 | Titanium alloy pipe and preparation method and system thereof |
| CN116352091B (en) * | 2023-04-28 | 2023-10-20 | 华中科技大学 | Titanium alloy pipe and preparation method and system thereof |
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| CN106976218B (en) | 2023-04-25 |
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