CN110271208A - A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment - Google Patents
A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment Download PDFInfo
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- CN110271208A CN110271208A CN201910538430.1A CN201910538430A CN110271208A CN 110271208 A CN110271208 A CN 110271208A CN 201910538430 A CN201910538430 A CN 201910538430A CN 110271208 A CN110271208 A CN 110271208A
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- Prior art keywords
- fiber
- forming method
- yarn
- machine
- reinforcing fiber
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
- B29C70/525—Component parts, details or accessories; Auxiliary operations
Abstract
A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment, are related to plastic material manufacture field, and process flow includes: boundling, 3D braiding, and plasticizing squeezes out, and fiber infiltration is formed, molding, traction and cutting；It can effectively solve the problem that in traditional handicraft, because long fibre stretches caused discontinuity, the problem of being easily broken off.And improve the layer structure of product, improve profile transverse strength.
Description
Technical field
The present invention relates to plastic material manufacture fields, and in particular to a kind of thermoplasticity 3D braiding continuous fiber enhancing pultrusion
Method for forming section and equipment.
Background technique
Plastics pultrusion molding process is mainly used to produce composite products, is most widely used one in composite material industry
Item technique.It is outstanding day by day with problem of environmental pollution in recent years, using the thermoplastic of pultrude process manufacture continuous fiber reinforcement
Property plastic composite, more and more by industry extensive concern.
Thermoplastic has stronger flexibility and shock resistance after pultrusion molding process is handled, good anti-
Broken ring ability, damage tolerance is high, can mend modeling, can weld, good biocompatibility, can be recycled, and when molding is not necessarily to curing reaction, forms
Speed is fast and can reuse.Although it has the advantages that above-mentioned a variety of, universal business application is not obtained yet so far.Reason
Be restriction of this technique by following disadvantage: melt viscosity is high, and forming temperature is high, and matrix is in solid-state at room temperature, is needed
Accurate control cooling, shrinking percentage is big when melt is cooling, and product quality fluctuation is big etc..
Existing fiber impregnation method further include it is solvent impregnated, specifically by plastic raw materials using one or more solvents it is completely molten
The solution of low-viscosity is made in solution, and with this impregnating reinforcing fiber.However the technique comes with some shortcomings, as solvent evaporation and
Recovery cost is expensive, and environment easy to pollute；If solvent cleaning is incomplete, bubble and gap often will form in the composite.
In order to make the pultrusion application of thermoplastic material obtain widely application, important task is that exploitation is most suitable
Processing technology, reduce cost and improve quality.Since pultrude process itself is a kind of continuous production composite wood that can be economic
The typical manufacturing process of material, and the widely used of automatic continuous production and product may be implemented, so the technique is in industry
Developed country is by most attention, and development speed is quickly.
Summary of the invention
In order to solve the above problem of the prior art, the present invention provides a kind of thermoplasticity 3D braiding continuous fiber enhancing drawing
Extrusion section bar forming method, can effectively solve the problem that in traditional handicraft, because long fibre stretches caused discontinuity, be easily broken off
The problem of.And improve the layer structure of product, improve profile transverse strength.
A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method, process flow include:
1) boundling: the glass fibre on guide frame is brought together by creel；
2) 3D weaves: reinforcing fiber being woven to the tow with certain section configuration by 3D braider；
3) fiber pre-processes: by reinforcing fiber tow heat pre-treatment, heating temperature (100-120) DEG C, heating zone conveying
Speed (1-3) m/min；
4) plasticizing squeezes out: being squeezed out thermoplastic plastifying fusion using screw extruder；
5) fiber infiltrates: by continuous reinforcing fiber is evenly dispersed and pre-tension, making reinforcing fiber by continuous train
It is impregnated in the mold equipped with plastic raw materials；
6) it is formed: being carried out shaping in the stock mould of vulcanization bed after infiltration；
7) it forms: using vacuum water cooling box by spraying water cooling under subnormal ambient, making product stable molding；It is sprayed by vacuum
Leaching, formed product is fast and is unlikely to deform, and cooling water, which can be recycled, reduces cost；
8) it draws and cuts.
Further, in step 5), dipping method is melt impregnation, solvent impregnated, powder infusion or mixes roving
Method.
Preferably, in step 5), dipping method is melt impregnation, and the plastic raw materials of melting extrusion are specifically injected mold
Impregnating reinforcing fiber, and dipping environment is pressurizeed, and/or the similar plastics of low relative molecular mass or plasticising will be mixed into plastics
Agent.To further increase the impregnability of pretreated reinforcing fiber in the plastic, fiber when dipping is set to be not easy to wind, and be applicable in
In the plastic of all kinds of thermoplastic resins.
Preferably, in step 5), dipping method is powder infusion, and the plastic raw materials of extrusion are specifically made as resin thin
Resin fine powder is adsorbed in the surface of fibre single thread in fibre bundle by powder in vulcanization bed by electrostatic interaction, and then heating makes powder
Last clinkering finally enables fiber to infiltrate in fiber surface in forming process.Make process not by resin matrix stickiness
Limitation, the polymerization physical efficiency of high relative molecular mass are evenly distributed in fiber.This process of fiber damage is few, and polymer is without drop
Solution, and there are potential advantages at low cost.It is furthermore preferred that the partial size of toner is (5~10) μm.
Preferably, in step 5), dipping method is to mix roving method, specifically spins the plastic raw materials of melting extrusion
At resin fibre or film band, then reinforcing fiber and resin fibre beam/film banding are closely merged into according to gel content
Mixed yarn, then by elevated-temperature seal Dilvar zone, resin fibre is melt into matrix.The advantages of method is that resin content is easily controllable, fine
Dimension can sufficiently be infiltrated.
Preferably, it in step 6), is carried out shaping in vulcanization bed by Electrostatic Absorption.
Preferably, it in step 7), is worked alternatively by two groups of draggers.At the end of a collection of production, stop
It only when the dragger of front haulage, changes and makees another group of dragger and drawn, product is kept at the uniform velocity to draw continuous production, avoid interval
Property production lead to deformation of products.
The present invention also provides a kind of thermoplasticity drawing and extruding section bar molding equipments suitable for above-mentioned forming method, by process flow
It is disposed with beaming device, 3D braider, fiber pretreatment heating device, screw extruder, fiber infiltration apparatus, vulcanization
Bed, vacuum water cooling box, dragger and cutting machine.
Preferably, beaming device includes guide frame and creel, is used for boundling；Fiber infiltration apparatus includes impregnation mold；Sulphur
Change in bed and is provided with stock mould；Molding die is provided in vacuum cold water storage cistern.
Preferably, the 3D braider is stereo weaving machine, circle volume machine or twisting machine, more preferably stereo weaving machine.This
Commercialized stereo weaving machine, circle volume machine or twisting machine specifically can be used in invention；Stereo weaving machine carries out diameter in a manner of semi-machine
To yarn, axial yarn and the stereo weaving for winding yarn, cylindrical solid multidirectional fabric is formed；Twisting machine is that multiply spun yarn is twisted one
The textile machine equipment of stock cylindrical wire.
The present invention is brought, and resultant effect includes:
The method of the present invention and equipment can be arranged using simple technique and device, be pre-formed reinforcing fiber three-dimensional vertical
Body structure enters back into resin base material infiltration, improves the long fibre tensile strength of fiber in production, and production and product is avoided to use
Fatigue fracture in the process.And the pultrusion of various thermoplastic resin substrates can be suitable for, promote corresponding infiltration technique
Further play various advantages, improve fiber and substrate solid bonding tightness, especially the outer layer lateral stiffness of guarantee product and
Toughness improves product shear bearing capacity.
Detailed description of the invention
Fig. 1 is the thermoplasticity drawing and extruding section bar molding equipment structural schematic diagram of the embodiment of the present invention 1.
Wherein, the identical appended drawing reference of identical component in the accompanying drawings；The attached drawing is not drawn according to the actual ratio.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method, process flow include:
1) boundling: the glass fibre on guide frame 1 is brought together by creel 2；
2) 3D weaves: reinforcing fiber being woven to the tow with certain section configuration by 3D braider 3；
3) fiber pre-processes: by reinforcing fiber tow heat pre-treatment, 120 DEG C of heating temperature, and heating zone conveying speed 2m/
min；
4) plasticizing squeezes out: being squeezed out thermoplastic plastifying fusion using screw extruder 6；
5) fiber infiltrates: by continuous reinforcing fiber is evenly dispersed and pre-tension, making reinforcing fiber by continuous train
It is impregnated in the mold equipped with plastic raw materials；
6) it is formed: being carried out shaping in the stock mould of vulcanization bed 8 after infiltration；
7) it forms: using vacuum water cooling box 9 by spraying water cooling under subnormal ambient, making 12 stable molding of product；By true
Sky spray, product 12 are formed fast and are unlikely to deform, and cooling water, which can be recycled, reduces cost；
8) it draws and cuts.
In step 5), dipping method is melt impregnation, specifically increases the plastic raw materials injection mold dipping of melting extrusion
Strong fiber, and dipping environment is pressurizeed, the similar plastics of low relative molecular mass will be mixed into plastics.To further increase pre- place
The impregnability of reinforcing fiber in the plastic after reason makes fiber when dipping be not easy to wind, and is suitable for all kinds of thermoplastic resins
Plastic.
In step 6), carried out shaping in vulcanization bed 8 by Electrostatic Absorption.
In step 7), worked alternatively by two groups of draggers 10.At the end of the production of a collection of product 12, stop working as
The dragger 10 of front haulage changes and makees another group of dragger 10 and drawn, and keeps product 12 at the uniform velocity to draw continuous production, between avoiding
The production of having a rest property causes product 12 to deform.
The present embodiment uses the thermoplasticity drawing and extruding section bar molding equipment suitable for above-mentioned forming method, as shown in Figure 1, according to
Secondary includes beaming device, 3D braider 3, workbench 4, fiber pretreatment heating device 5, plasticizing extruder 6, fiber infiltration apparatus
7, vulcanization bed 8,9, two groups of draggers 10 of vacuum water cooling box and cutting machine 11；
The 3D braider 3 is stereo weaving machine.Unless otherwise specified, 3D braider specifically uses French Si Bile three-dimensional
Composite material braider.Stereo weaving machine carries out radial yarn, axial yarn and the stereo weaving for winding yarn in a manner of semi-machine, is formed
Cylindrical solid multidirectional fabric.
The present embodiment equipment is provided with PLC control device 13, can make the whole work process coordinating and unifying by PLC, if
Set each running parameter.
Embodiment 2
The present embodiment is implemented using process and equipment described in embodiment 1, the difference is that,
In step 5), dipping method is powder infusion, and the plastic raw materials of extrusion are specifically made as resin fine powder, is being vulcanized
Resin fine powder is adsorbed in the surface of fibre single thread in fibre bundle by electrostatic interaction, then heating makes powder clinkering in fibre in bed
Dimension table face finally enables fiber to infiltrate in the forming process of vacuum water cooling box.Make process not by resin matrix stickiness
Limitation, the polymerization physical efficiency of high relative molecular mass is evenly distributed in fiber.This process of fiber damage is few, and polymer is without drop
Solution, and there are potential advantages at low cost.The partial size of toner is 8 μm.
Embodiment 3
The present embodiment is implemented using process and equipment described in embodiment 1, the difference is that,
In step 5), dipping method is to mix roving method, and the plastic raw materials of melting extrusion are specifically spun into resin
Then reinforcing fiber and resin fibre beam/film banding are closely merged into mixed yarn according to gel content by fiber or film band, then
By elevated-temperature seal Dilvar zone, resin fibre is melt into matrix.The advantages of method is that resin content is easily controllable, and fiber can obtain
Sufficiently infiltration.
Above with reference to preferred embodiment, invention has been described, but protection scope of the present invention is not restricted to
This, any all technical solutions fallen within the scope of the appended claims are within the scope of the invention.This hair is not being departed from
In the case where bright range, various improvement can be carried out to it and can replace component therein with equivalent.Especially, only
Otherwise there are structural conflict, items technical characteristic mentioned in the various embodiments be can be combined in any way.
Claims (10)
1. a kind of thermoplasticity 3D braiding continuous fiber enhances drawing and extruding section bar forming method, which is characterized in that process flow includes:
1) boundling: the glass fibre on guide frame is brought together by creel；
2) 3D weaves: reinforcing fiber being woven to the tow with certain section configuration by 3D braider；
3) fiber pre-processes: by reinforcing fiber tow heat pre-treatment, heating temperature (100-120) DEG C, heating zone conveying speed
(1-3)m/min；
4) plasticizing squeezes out: being squeezed out thermoplastic plastifying fusion using screw extruder；
5) fiber infiltrates: by continuous reinforcing fiber is evenly dispersed and pre-tension, filling reinforcing fiber by continuous train
Have in the mold of plastic raw materials and impregnates；
6) it is formed: being carried out shaping in the stock mould of vulcanization bed after infiltration；
7) it forms: using vacuum water cooling box by spraying water cooling under subnormal ambient, making product stable molding；By vacuum spray,
Formed product is fast and is unlikely to deform, and cooling water, which can be recycled, reduces cost；
8) it draws and cuts.
2. forming method according to claim 1, it is characterised in that: in step 5), dipping method is melt impregnation, molten
Agent dipping, powder infusion mix roving method.
3. forming method according to claim 2, it is characterised in that: in step 5), dipping method is melt impregnation, tool
The plastic raw materials of melting extrusion are injected mold impregnating reinforcing fiber by body, and dipping environment is pressurizeed, and/or will mix in plastics
Enter the similar plastics of low relative molecular mass or plasticizer.
4. forming method according to claim 2, it is characterised in that: in step 5), dipping method is powder infusion, tool
The plastic raw materials of extrusion are made as resin fine powder by body, and resin fine powder is adsorbed in fibre bundle by electrostatic interaction in vulcanization bed
The surface of fibre single thread, then heating makes powder clinkering in fiber surface, finally so that fiber is infiltrated in forming process.
5. forming method according to claim 4, it is characterised in that: the partial size of toner is (5~10) μm.
6. forming method according to claim 2, it is characterised in that: in step 5), dipping method is non-twist thick to mix
The plastic raw materials of melting extrusion are specifically spun into resin fibre or film band by yarn method, then according to gel content by reinforcing fiber and
Resin fibre beam/film banding is closely merged into mixed yarn, then by elevated-temperature seal Dilvar zone, resin fibre is melt into matrix.
7. forming method according to claim 1, it is characterised in that: in step 6), inhaled in vulcanization bed by electrostatic
It is attached to carry out shaping, and/or
In step 7), worked alternatively by two groups of draggers；At the end of a collection of production, stop when front haulage
Dragger changes and makees another group of dragger and drawn, and product is kept at the uniform velocity to draw continuous production.
8. a kind of thermoplasticity drawing and extruding section bar molding equipment suitable for the forming method as described in any one of claim 1-8, is pressed
Process flow is disposed with beaming device, 3D braider, fiber pretreatment heating device, screw extruder, fiber infiltration dress
It sets, vulcanization bed, vacuum water cooling box, dragger and cutting machine.
9. molding equipment according to claim 8, it is characterised in that: beaming device includes guide frame and creel, for collecting
Beam；Fiber infiltration apparatus includes impregnation mold；Stock mould is provided in vulcanization bed；Molding die is provided in vacuum cold water storage cistern.
10. molding equipment according to claim 8, it is characterised in that: the 3D braider is stereo weaving machine, circle volume machine
Or twisting machine；Preferably, stereo weaving machine carries out radial yarn, axial yarn and the stereo weaving for winding yarn, shape in a manner of semi-machine
At cylindrical solid multidirectional fabric；Twisting machine is the textile machine equipment that multiply spun yarn is twisted to one cylindrical wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910538430.1A CN110271208A (en) | 2019-06-20 | 2019-06-20 | A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment |
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| CN201910538430.1A CN110271208A (en) | 2019-06-20 | 2019-06-20 | A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116058341A (en) * | 2022-10-19 | 2023-05-05 | 威海华洋体育用品有限公司 | Fishing rod and fishing line guide and preparation method thereof |
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