CN104512025B - Extrusion moulding method of wear-resistant hollow pipe - Google Patents

Extrusion moulding method of wear-resistant hollow pipe Download PDF

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Publication number
CN104512025B
CN104512025B CN201310447925.6A CN201310447925A CN104512025B CN 104512025 B CN104512025 B CN 104512025B CN 201310447925 A CN201310447925 A CN 201310447925A CN 104512025 B CN104512025 B CN 104512025B
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China
Prior art keywords
core
extruder
hollow pipe
melt
under
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CN201310447925.6A
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Chinese (zh)
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CN104512025A (en
Inventor
宋波
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Gaoyou Yidu Small and micro businesses Service Management Co. Ltd.
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Qingdao Lannonggu Agricultural Products Research and Development Co Ltd
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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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
    • 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
    • B29K—INDEXING 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0087—Wear resistance
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses an extrusion moulding method of wear-resistant hollow pipe. The extrusion moulding method comprises the following steps: adding a plastic raw material containing nano montmorillonite into the cylinder of an extruding machine, conveying the plastic raw material in the extruding machine by the screw rod through rotation, then heating to melt the plastic raw material by a heating device through the electric heating; conveying the melt raw material in the cylinder of the extruding machine to the machine head through flanges under the pushing force generated by the rotation of the screw rod, blocking the incompletely-melt solid and semi-solid by the filter screen arranged between flanges; extruding and moulding the melt raw material in the machine head by the centrifugal force generated by the high speed rotation of machine head which is driven by the variable frequency motor; introducing the extruded hollow pipe matrix into a water tank under the traction of a dragger, and rapidly cooling the hollow pipe matrix by cyclic cooling water so as to obtain the finished hollow pipe. By the provided method, the radial regular orientation of nano montmorillonite in the hollow pipe can be achieved, and thus the wear-resistant performance of hollow pipe can be effectively improved.

Description

A kind of extruding forming method of abrasion-resistant hollow tubing
Technical field
The present invention relates to a kind of extruding forming method of abrasion-resistant hollow tubing.
Background technology
Nano imvite has activeness and quietness performance, adds nanometer to cover support soil and can strengthen hollow tube in hollow tube Wearability, in recent years, application attention in tubing for the nano imvite.
At present, if be extruded in the hollow tube containing nano imvite or using common extruding forming method Type, the performance of nano imvite can not play well.Common extrusion equipment only enables nano imvite hollow In tubing matrix circumferential and axial orientation, to realize radial oriented still in theoretical research stage.
Content of the invention
In order to solve the above problems, the present invention provides a kind of extruding forming method of abrasion-resistant hollow tubing.
The technical solution used in the present invention includes herein below:
A kind of extruding forming method of abrasion-resistant hollow tubing, comprises the following steps:
(1) plastic raw materialss containing nano imvite are added in extruder barrel, rotated by screw rod in extruder Under the electrical heating of conveying and heater acts on, heat up melting；
(2) melt enters extruder head by extruder barrel by flange under the rotation forces of screw rod, between flange Filter screen stops not the solid of plasticizing and semisolid completely；
(3) producing centrifugal force by frequency conversion motor drive head high-speed rotation in extruder head by melt extrusion molding is Hollow tube matrix；
(4) the hollow tube matrix extruded enters tank under the draw of traction machine, and the cooling water using circulation enters Row is quick to be cooled down, and final molding is hollow tube part.
Extruder includes handpiece body, worm gear set, core set, core, worm shaft, worm screw, frequency conversion motor, and handpiece body passes through spiral shell Flange is fixedly connected by bolt with extruder barrel, worm gear set by the bearings being arranged on handpiece body, worm gear set by worm drive, Worm shaft is provided with bearing at the two ends contacting with handpiece body, and motor is connected by shaft coupling with worm shaft, and core is arranged on snail In wheel case and in side clamping, core set is fixed by screws in a side end face of worm gear set, crowds around between core set and core Space formed conical gradual change path dynamic runner.
Melt is shunted by core open channel after extruder barrel enters extruder head, enters dynamic runner；With When, turbine wheel shaft frequency conversion motor driving under high-speed rotation and drive Cover For A Turbine rotate, melt extrusion pressure effect under be in circulation Extrude, nano imvite assumes rule orientating arrangement under the action of the centrifugal force, steady under the conical gradual change path in the middle of core set Surely it is extruded as hollow tube matrix.
Beneficial effects of the present invention: (1) utilizes Motor drive worm gear-endless screw and centrifugation orientation head rotating, speed is controlled, Ensureing that realizing nanometer illiteracy on the premise of extrusion is stable asks soil radial oriented；(2) extruder is put worm gear set, core set, core All individually separately design, convenient installation, fixing and separation；(3) realize in hollow tube nano imvite and produce radial oriented, have Effect improves the high-wearing feature of hollow tube.
Brief description
Fig. 1 is the extrusion channel structural representation of extruder.
Fig. 2 is the dynamic centrifugal mechanical motion principle figure of extruder.
Wherein: the set 4- core 6- distance sleeve 7- extruder barrel 8- sealing of 1- handpiece body 2- worm gear set 3- core End cap 9- worm shaft 10- bearing 11- shaft coupling 12- motor 13- hold-down support.
Specific embodiment
Below against accompanying drawing and with reference to specific embodiment, the present invention will be further described.
A kind of extruding forming method of abrasion-resistant hollow tubing, comprises the following steps:
(1) plastic raw materialss containing nano imvite are added in extruder barrel, rotated by screw rod in extruder Under the electrical heating of conveying and heater acts on, heat up melting；
(2) melt enters extruder head by extruder barrel by flange under the rotation forces of screw rod, between flange Filter screen stops not the solid of plasticizing and semisolid completely；
(3) producing centrifugal force by frequency conversion motor drive head high-speed rotation in extruder head by melt extrusion molding is Hollow tube matrix；
(4) the hollow tube matrix extruded enters tank under the draw of traction machine, and the cooling water using circulation enters Row is quick to be cooled down, and final molding is hollow tube part.
As shown in Figure 1, 2, extruder includes handpiece body 1, worm gear set 2, core set 3, core 4, worm shaft 9, worm screw, frequency conversion Motor 12, handpiece body 1 is fixedly connected with extruder barrel 7 by flange, inside handpiece body 1, using worm gear-endless screw power train System, motor 12 is connected by shaft coupling 11 with worm shaft 9, drives worm shaft 9 by motor 12, then drives snail by worm shaft 9 Wheel case 2, worm shaft 9 is provided with bearing 10 at the two ends contacting with handpiece body 1, and both sides are respectively mounted end cover 8 and are sealed. Inside worm gear set 2, i.e. centrifugation is orientated the runner of head, and core 4 is arranged in worm gear set 2 and in right side clamping, left side such as Fig. 1 Shown by core set 3 positioning, the left end face that core set 3 is fixed by screws in worm gear set 2.It is provided with the right side of worm gear set 2 Distance sleeve 6, the material that minority in extrusion is revealed outside runner seals.Motor 12 is fixed on and can move left and right On hold-down support 13.Whole centrifugation orientation head is changed the line of production raw centrifugal force in the driving backspin of motor 12, under the influence of centrifugal force Chopped fiber produces radial oriented in elastomeric compound.
Melt is shunted by core open channel after extruder barrel enters extruder head, enters dynamic runner；With When, turbine wheel shaft frequency conversion motor driving under high-speed rotation and drive Cover For A Turbine rotate, melt extrusion pressure effect under be in circulation Extrude, nano imvite assumes rule orientating arrangement in tubing under the action of the centrifugal force, the conical gradual change in the middle of core set Under path, steady extruding is hollow tube matrix.Under extrusion pressure, melt assumes circulation extrusion, nanometer under the action of the centrifugal force Montmorillonite assumes rule orientating arrangement, and under the conical gradual change path of core set 3, steady extruding has the solid functional material of gradient. Using circulation dynamic centrifugal orientation technology, centrifugal action makes nano imvite radial oriented in hollow tube, thus improving it Every mechanical property.
This invention can regulate and control to head rotating speed and centrifugal force, for centrifugal force and the dynamic head of different orientation Relation between required rotating speed can be drawn by below equation:
In this device, the size of centrifugal force f depends on being centrifuged the angular velocity (ω, r/min) of head and runner in head The distance (r, mm) of heart axle.Their relation is: fCentrifugal force=m ω r；
For convenience, f commonly uses relative centrifugal force(RCF) i.e. gravitational multiple represents.
rcf=fCentrifugal force/ fGravity= mωr/mg= ωr/g
=
==
=1.118r
SoIndividual g
In formula: rcf-relative centrifugal force(RCF), g(g=9.80m/s)；R-centrifugal rotation radius, mm；N-rotating speed, r/min.
From formula, maximum in runner edge centrifugal force, so shaping pipe can make to receive using larger centrifugal force Rice montmorillonite produces radial oriented.Known by formula, in runner center, centrifugal force is zero, with the increase of radius, centrifugal force is got over Come bigger, so degree of orientation is increasing from inside to outside, reach maximum to edge, thus plastic gradient function hollow pipe Material.
After above-mentioned formula deformation, may be used to determine dynamic head under different centrifugal actions in the value of known r and rcf Required rotating speed n(r/min):
.

Claims (2)

1. a kind of extruding forming method of abrasion-resistant hollow tubing is it is characterised in that the method comprises the following steps:
(1) plastic raw materialss containing nano imvite are added in extruder barrel, in extruder, conveying is rotated by screw rod Under electrical heating with heater acts on, heat up melting；
(2) melt enters extruder head, the filter screen between flange by extruder barrel by flange under the rotation forces of screw rod Stop the not solid of plasticizing and semisolid completely；
(3) it is hollow for driving head high-speed rotation to produce centrifugal force by melt extrusion molding by frequency conversion motor in extruder head Tubing matrix；
(4) the hollow tube matrix extruded enters tank under the draw of traction machine, and the cooling water using circulation is carried out soon But, final molding is hollow tube part to quickly cooling；
Extruder includes handpiece body, worm gear set, core set, core, worm shaft, worm screw, frequency conversion motor, and handpiece body will by bolt Flange is fixedly connected with extruder barrel, and, by the bearings being arranged on handpiece body, worm gear set is by worm drive, worm screw for worm gear set Axle is provided with bearing at the two ends contacting with handpiece body, and motor is connected by shaft coupling with worm shaft, and core is arranged on worm gear set Interior and in side clamping, core set is fixed by screws in a side end face of worm gear set, the sky crowded around between core set and core Between formed conical gradual change path dynamic runner.
2. according to claim 1 a kind of extruding forming method of abrasion-resistant hollow tubing it is characterised in that melt is from extruder Machine barrel is shunted by core open channel after entering extruder head, enters dynamic runner；Meanwhile, turbine wheel shaft drives in frequency conversion motor Dynamic lower high-speed rotation simultaneously drives Cover For A Turbine to rotate, and melt extrusion in circulation under extrusion pressure effect is received under the action of the centrifugal force Rice montmorillonite assumes rule orientating arrangement, and under the conical gradual change path in the middle of core set, steady extruding is hollow tube matrix.
CN201310447925.6A 2013-09-27 2013-09-27 Extrusion moulding method of wear-resistant hollow pipe Active CN104512025B (en)

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Application Number Priority Date Filing Date Title
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CN104512025B true CN104512025B (en) 2017-02-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115056451B (en) * 2022-06-20 2023-10-13 江苏奇鹰电线电缆有限公司 Conical double-screw extrusion device for cable protection pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2183869Y (en) * 1993-12-31 1994-11-30 张大慈 Rotary head of blowing mould machine
CN1438264A (en) * 2003-03-04 2003-08-27 王庆昭 Method for preparing super-high molecular-weight polyethylene self-reinforcing material and apparatus thereof
CN1786062A (en) * 2004-12-12 2006-06-14 青岛大学 Preparation method of polyolefin/layered silicate nano-composition
CN101502997A (en) * 2009-02-27 2009-08-12 北京化工大学 Double-bubble blown film moulding method for producing polyester thermal contraction film
CN101693402A (en) * 2009-10-19 2010-04-14 江苏联冠科技发展有限公司 Production method of ultra-high molecular weight polyethylene products
CN102796300A (en) * 2011-05-24 2012-11-28 上海上丰集团有限公司 Ultra-high molecular weight polyethylene composite pipe, and raw materials and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2183869Y (en) * 1993-12-31 1994-11-30 张大慈 Rotary head of blowing mould machine
CN1438264A (en) * 2003-03-04 2003-08-27 王庆昭 Method for preparing super-high molecular-weight polyethylene self-reinforcing material and apparatus thereof
CN1786062A (en) * 2004-12-12 2006-06-14 青岛大学 Preparation method of polyolefin/layered silicate nano-composition
CN101502997A (en) * 2009-02-27 2009-08-12 北京化工大学 Double-bubble blown film moulding method for producing polyester thermal contraction film
CN101693402A (en) * 2009-10-19 2010-04-14 江苏联冠科技发展有限公司 Production method of ultra-high molecular weight polyethylene products
CN102796300A (en) * 2011-05-24 2012-11-28 上海上丰集团有限公司 Ultra-high molecular weight polyethylene composite pipe, and raw materials and preparation method thereof

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Address after: 266000 Quanzhou Road, Pingdu Economic Development Zone, Shandong, Qingdao 58-10

Patentee after: QINGDAO LANNONG GRAIN AND AGRICULTURAL PRODUCTS RESEARCH & DEVELOPMENT CO., LTD.

Address before: Nan Shu Zhen graphite new materials industry in Laixi city of Shandong Province, Qingdao City area 266613

Patentee before: QINGDAO LANNONG GRAIN AND AGRICULTURAL PRODUCTS RESEARCH & DEVELOPMENT CO., LTD.

CP02 Change in the address of a patent holder

Address after: 266000 graphite new material industrial cluster area of Nan Shu Town, Laixi City, Qingdao, Shandong

Patentee after: QINGDAO LANNONG GRAIN AND AGRICULTURAL PRODUCTS RESEARCH & DEVELOPMENT CO., LTD.

Address before: 266000 No. 58-10 Quanzhou Road, Pingdu City Economic Development Zone, Qingdao, Shandong

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TR01 Transfer of patent right

Effective date of registration: 20181123

Address after: 225600 Jiangsu Yangzhou Gaoyou city Gaoyou town industrial concentration area

Patentee after: Gaoyou Yidu Small and micro businesses Service Management Co. Ltd.

Address before: 266000 graphite new material industrial cluster area of Nan Shu Town, Laixi City, Qingdao, Shandong

Patentee before: QINGDAO LANNONG GRAIN AND AGRICULTURAL PRODUCTS RESEARCH & DEVELOPMENT CO., LTD.

TR01 Transfer of patent right