The wind wheel blade mould of the two vacuum systems of a kind of tool
Technical field
The present invention relates to a kind of machining mould, especially a kind of method of making the mould of wind wheel blade and using this mould production wind wheel blade.
Background technology
Day by day under the rare situation, environmental protection, green and the energy that can reuse become the present energy situation of mainly advocating at traditional fossil energy.Therefore, a lot of windy areas of China have been set up wind power generation plant gradually.For wind-driven generator, wind wheel blade is the important component part of wind-driven generator.And for the making of wind blade, it is low that traditional hand paste technology has efficient, and the quality that manufactures a finished product instability is made coarse defective, and qualification and the environmental condition to personnel relies on higher simultaneously.Therefore the production firm of wind wheel blade generally adopts vacuum suction technology both at home and abroad, the resin compound suction is entered glass fibre shop layer make wind wheel blade.
The method that wind wheel blade is made in a kind of wind wheel blade vacuum suction of introducing as Chinese invention patent publication No. CN102358047A, as shown in Figure 1, in specific wind wheel blade mould 1, lay for behind the release cloth 2 of the finished product demoulding, glass fibre shop layer 3 is laid on the release cloth 2 as requested; Then, spreading laminar surface at glass fibre lays the adsorption layer 11 of the barrier film 4 of release cloth 2, control flow velocity, absorption bubble successively, is used for the mobile water conservancy diversion net 5 of homing tree lipoprotein mixture, the diaphragm seal 6 of sealed mold; Wherein, release cloth 2 has certain permeability, barrier film 4, water conservancy diversion net 5 and has specific permeability hole, and adsorption layer 11 has the effect of absorption bubble, diaphragm seal 6 and the mould 1 formation seal chamber that fits; Simultaneously, will carry the injected rubber hose 8 of resin compound 7, the vacuum tube 9 of connection vavuum pump 10 to be inserted into diaphragm seal 6 respectively; And then after opening vavuum pump 10 and vacuumizing, resin compound 7 permeates water conservancy diversion net 5, bubble adsorption layer 11, barrier film 4, release cloth 2 successively and enters into glass fibre shop layer 3 under the effect of negative pressure of vacuum, solidify the back and form required wind wheel blade.
Technique scheme, owing between barrier film 4 and water conservancy diversion net 5, set up an adsorption layer 11, the bubble that floats to layer 3 surface, glass fibre shop on making is adsorbed in a large number, thereby minimizing bubble quantity and bubble, therefore can reduce that bubble effectively improves the quality of wind wheel blade to the influence of wind wheel blade in the resin compound.
Yet, in the above-mentioned vacuum suction operation, be after utilizing diaphragm seal 6 that specific wind wheel blade mould is carried out encapsulation process, and form extraneous vacuum system by vavuum pump, vacuum tube, injected rubber hose etc. temporarily, make mould inside can form vacuum, and then carry out follow-up injecting glue program, in the injecting glue program, also to connect a resin trap at vavuum pump 10 rears, the glue amount of overflowing with collection.Therefore, in the process of a wind wheel blade of every making, be difficult to guarantee that the air-tightness of forming sealed environment between storage glue jar 7, injected rubber hose 8, mould 1, vacuum tube 9, vavuum pump 10, the resin trap can reach certain requirement.
This way of prior art, all form an external vacuum system by storage glue jar, resin trap and vacuum exhaust pipe at every turn temporarily, be connected with mould again, therefore can not guarantee that the connecting portion place of each external vacuum system itself and each external vacuum system and mould all has enough air-tightness, need each blade of making to do the pressurize test before, this kind way is comparatively loaded down with trivial details, and increases workman's operation easier, and production efficiency is difficult to improve.And the part extract system can't be reused, and has increased the manufacturing cost of wind wheel blade virtually.
Whether in addition, the used resin trap of external vacuum system is that metal is made in the prior art, can not see the interior glue amount of resin trap clearly and will fill, is prone to the situation that causes product rejection because of the excessive glue gas leakage of gatherer.In addition, less because of the number of the used resin trap of whole vacuum system in the prior art, and can't judge also in process of production whether the injecting glue amount of each injecting glue point is suitable, and can not control injecting glue speed effectively in time, make process controllability poor.
Summary of the invention
In view of the foregoing, of the present inventionly provide a kind of wind wheel blade mould with vacuum system, especially a kind of wind wheel blade mould with two cover vacuum systems makes the air-tightness height of mold integral vacuum system, reliability of technology height.
The purpose of this invention is to provide a kind of method of producing wind wheel blade by above-mentioned mould, to improve make efficiency.
Further purpose of the present invention provides a kind of blade mold of injecting glue speed and method of making wind wheel blade grasped.
The wind wheel blade mould of the two vacuum systems of tool of the present invention, comprise: be provided with the twice vacuum way at die joint, this first vacuum way is positioned at the mould inboard, second vacuum way is positioned at the outside of the first road vacuum way, described first vacuum way is connected with resin trap by pipeline, and this second vacuum way is connected with a vaccum-pumping equipment by pipeline.
Among one of them embodiment, described first vacuum way comprises the bleed off passage that several distribute along die joint, described second vacuum way comprises several along the bleed off passage that die joint distributes, and each bleed off passage of described first vacuum way and each bleed off passage of second vacuum way are respectively the perforation that penetrates in this die joint.
Among one of them embodiment, described resin trap adopts transparent material to make.
Among one of them embodiment, each bleed off passage of described first vacuum way and each bleed off passage of described second vacuum way be not on the same transverse cross sectional face of mould; Each bleed off passage of described first vacuum way and each bleed off passage of described second vacuum way, minimum distance in the vertical is more than or equal to 200mm.
Among one of them embodiment, each bleed off passage of described first vacuum way, in the distribution density in the die cavity knee that is positioned at mould greater than the distribution density that is positioned at die cavity straight line place; The bleed off passage distribution density of described second vacuum way is less than the distribution density of the bleed off passage of first vacuum way.
Among one of them embodiment, more than or equal to 30mm, the lateral separation of each bleed off passage of first vacuum way and each bleed off passage of second vacuum way is more than or equal to 20mm apart from the outer most edge of this die joint for each bleed off passage of described second vacuum way.
Among one of them embodiment, each pipeline that each bleed off passage of described first vacuum way connects connects a side of a resin trap by a valve, the opposite side of described each resin trap connects a vacuum manifold road, and each vacuum manifold road is connected with this vaccum-pumping equipment.
Among one of them embodiment, the pipeline that each bleed off passage of described first vacuum way connects is a manifold, one of manifold is connected with resin trap one side by a valve, another of manifold is connected with a vaccum-pumping equipment by a valve and vacuum manifold road, and described resin trap opposite side also is connected with this vaccum-pumping equipment by pipeline.
Among one of them embodiment, each bleed off passage of described second vacuum way connects a vacuum manifold road respectively, and each vacuum manifold road is connected with a vacuum trunk line by a valve, and this vacuum trunk line is connected with this vaccum-pumping equipment.
Among one of them embodiment, be preset with the built-in fitting that a confession is connected with pipeline in the perforation of described each bleed off passage, described built-in fitting is the middle hollow form that is, the outside has the structure of screw thread, and described built-in fitting is to be fixed in the perforation of each bleed off passage with structure glue.
Preferred technique effect of the present invention is: the present invention has the blade mold of two vacuum systems, first vacuum way is connected with vacuum pipe and the vaccum-pumping equipment fixed respectively with second vacuum way, and when making vacuum mold of the present invention, carried out the pressurize test, with respect to prior art, need the interim external vacuum system difference of setting up, the present invention can save labour turnover, and improves the quality of products simultaneously at every turn.In addition, the present invention adopts transparent material because of resin trap, and each vacuum way comprises some bleed off passages, be distributed in each diverse location of mould, can judge at an easy rate whether the injecting glue speed of each injecting glue point is too fast, the controllability of raising product technology by observing gathering way of glue amount in the resin trap, the excessive glue of Shou Jiing can also directly be recycled simultaneously, saves the technology cost.
Description of drawings
Fig. 1 is the schematic diagram when making wind wheel blade work with existing wind wheel blade mould.
Fig. 2 is two vacuum way schematic diagrames of the die joint of wind wheel blade mould of the present invention.
Fig. 3 is the transverse cross-sectional view of wind wheel blade mould of the present invention.
Schematic diagram when Fig. 4 makes wind wheel blade work for wind wheel blade mould of the present invention.
Fig. 5 is for using the flow chart of wind wheel blade Mold Making wind wheel blade of the present invention.
The specific embodiment
As shown in Figure 2, be two vacuum way schematic diagrames of the die joint of wind wheel blade mould of the present invention.
What wherein show among Fig. 2 is wind wheel blade mould vertical view, is included in mould 1 and has a die joint 11, and die joint is the face that upper die and lower die mate joint mutually, and die joint 11 inboards are die cavity 12.On die joint 11, be formed with first vacuum way 13 and second vacuum way 14.Wherein first vacuum way 13 is positioned at the inboard of die joint 11 relatively, and second vacuum way 14 is positioned at the outside of die joint 11 relatively, first vacuum way 13 and second vacuum way 14 comprise several bleed off passages 131 and 141 at interval respectively, and each bleed off passage 131 and 141 is for penetrating the perforation of die joint.This first vacuum way is used for being connected with resin trap, and collecting excessive glue, and second vacuum way 14 is mainly used in being connected with vacuum exhaust pipe, so that die cavity 12 inside formation vacuum.Wherein be equipped with and built-in fitting in each bleed off passage 131 and 141 the perforation, be specially with after the mechanical punching, built-in fitting is fixed in the inwall in hole with structure glue, and the junction of hole and built-in fitting is polished flat.Built-in fitting is similar pipe joint, is hollow form in the middle of it, and outer surface has external thread structure, and its preferable contour structures with a taper is so that various types of seal for pipe joints connects.
As shown in Figure 2, this first vacuum way 13 is 3000mm 4 bleed off passages 131 that distribute at mould 1 bending position, and in the bigger position of the width of die cavity 12 for to be provided with a bleed off passage 131 every the 2000mm place.This is that the needed glue amount of blade different parts decides when making the blade of wind wheel according to form.Second vacuum way 14 in the outside is for being provided with a bleed off passage 141 every 5000mm, its set density is less than the bleed off passage density of first vacuum way 13, in the ordinary course of things, the bleed off passage density 141 of second vacuum way 14 be first vacuum way 13 bleed off passage density 1/2 to 1/3.
Further, in view of first vacuum way 13 and second vacuum way, 14 each bleed off passage connecting pipe convenience, each bleed off passage 131 of first vacuum way among the present invention and each bleed off passage 141 of described second vacuum way, not on the same transverse cross sectional face of mould, also not on same longitudinally cutting face (namely stagger distance), wherein the nearest fore-and-aft distance of the bleed off passage of two vacuum ways more than or equal to 200mm(in conjunction with as shown in Figure 2); And the nearest lateral separation of the bleed off passage of two vacuum ways is more than or equal to 20mm.And for example shown in Figure 3, be the transverse cross-sectional view of mould, this profile is not the vertical cut section, but the profile of a turnover, represented is the lateral attitude relation of the bleed off passage of two vacuum ways.As shown in Figure 3, wherein the bleed off passage 141 of second vacuum way 14 is apart from the outer end 30mm of die joint 11, and the spacing of each bleed off passage 131 of first vacuum way 13 and bleed off passage 141 is 20mm.The curve that is connected to form of each bleed off passage 131 of each first vacuum way 13 wherein, the curve that is connected to form with each bleed off passage 141 of second vacuum way 14 is preferably the state that is parallel to each other so that the processing of bleed off passage place perforation is handled and with being connected of pipeline.
Schematic diagram when Fig. 4 makes wind wheel blade work for wind wheel blade mould of the present invention.Wherein, each bleed off passage 131 below of first vacuum way 13 of mould 1 connect a resin trap 132,
Wherein each resin trap 132 is made with transparent material, transparent PC material for example, PV material, safety glass etc., in order to observe the speed that it collects the glue that overflows, thereby the resin trap that can in time more renew is avoided resin trap 132 overfill, explosion, gas leakage, cause the entire die air-tightness destroyed, influence the pouring and forming process quality.In addition, the speed that the glue that overflow in the resin trap 132 by observing each bleed off passage place enter, can correspondence judge each resin trap 132 interior injecting glue point in certain zone on every side, the situation that whether has injecting glue excessive velocities and glue amount overfill, even can judge whether be full of resin glue in the die cavity 12, thereby improve the controllability (ellipsis represents that the connection situation of each bleed off passage 131 below is identical in the diagram, but in order simply all not illustrate) of whole technology.
Each resin trap 132 opposite side is connected on the vacuum trunk line 15 by pipeline, and vacuum trunk line 15 is connected with a vaccum-pumping equipment 2.And each bleed off passage 141 below of second vacuum way 14 connect a vacuum manifold road 142, each vacuum manifold road 142 is connected with vacuum trunk line 16 by threeway again, this vacuum trunk line 16 is connected with a vaccum-pumping equipment 3, also can connect on the aforesaid vaccum-pumping equipment 2.Between bleed off passage 131 and resin trap 132, be provided with valve, between resin trap 132 and vacuum trunk line 15, can be provided with valve, can be provided with valve between each bleed off passage 141 and the vacuum manifold road 142.Further, can below bleed off passage 131, be provided with manifold, one of manifold is connected with this resin trap 132, two of manifold directly is connected with vacuum trunk line 15 by valve, vacuum manifold road 133, whereby, can close the valve in resin trap 132 the place aheads, and the valve between unlatching and the vacuum trunk line 15 makes first vacuum way 13 assist second vacuum way 14 fast to vacuumizing processing in the die cavity.
Except above-mentioned syndeton, be connected with injected rubber hose 3 at each injecting glue point of mould 1, and injected rubber hose 3 other ends are connected with a storage glue jar 4, these storage glue jar 4 memory storage have resin glue to be formed.And preferably, nearly tank deck place, glue jar 4 upper ends connects a pressure 5 in storage, and this pressure connects press device so that pressure to be provided, and makes the resin glue in the storage glue jar 4 can enter in the die cavity 12 rapidly, and infiltrate fiber lay down layer to the die cavity 12, form composite construction with the fiber lay down layer.
Below be the making step of the two vacuum system moulds of the present invention:
1, use Steel Ruler and marking pen that bleed off passage is carried out mark at a mould 1 die joint 11;
2. use the F folder to cooperate foam graticle, sealing joint strip, iron plate that magnetic force is bored to be fixed on the die joint 11 and get perforation, require the magnetic force auger spindle heart and gauge point to be on same the straight line;
3. using magnetic force to bore cooperates Φ 50 hole making drills, Φ 24.5 fluted drills, Φ 50 reamers, Φ 40 counterbits to punch.The bleed off passage 131 of first vacuum way 13, evenly to arrange 4 in the distance of 0~3000mm, other position distributes one every 2000mm, is mainly used in taking out excessive glue; Each bleed off passage 141 of second vacuum way 14 is that every 5000mm distributes one, is mainly used in vacuumizing;
4. modulation HLU235 structure glue is fixed on inwall of each perforation of step 2 made with built-in fitting, polishes smooth around die joint 11 and the built-in fitting.
5. each bleed off passage of twice vacuum way, be connected with built-in fitting with steel wire tube, the steel wire tube other end is connected with vacuum trunk line or resin trap, seal with sealing joint strip between all connecting portion steel wire tubes and the built-in fitting, and the outside larynx hoop that uses of steel wire tube is tightened; Or all pipelines use PPR pipes, and finish connection with the fuse machine fusion between the pipeline.
6. at the mould medium position, with threeway mould housing leading edge and trailing edge are connected the pipeline that and be connected, reserve the vacuum trunk line that suitable length links to each other with vavuum pump in intersection.
7. make and finish pressurize friendship inspection.
The above-mentioned pair of vacuum mold made and finished and do pressurize and hand over inspection, then the mould of of the present invention pair of vacuum system has formed the system of solidifying, need not at every turn in process of production all the air-tightness of unannounced quiz " external vacuum system " and entire die again, improve production efficiency, guaranteed the quality of product.For the pouring and forming process process of wind wheel blade, the air-tightness requirement is 15 minutes 0.5kPa in the mould.As not satisfying certain air-tightness condition, may make the pouring and forming process overlong time of blade, a large amount of bubbles of the inner formation of moulding rear blade make blade construction loose, reduce mechanical strength and other physical properties of wind wheel blade greatly.
Use the flow process of the wind wheel blade Mold Making wind wheel blade of the two vacuum systems of tool of the present invention, referring to shown in Figure 5, can be summarized as following steps substantially:
(1) will be for the manufacture of the fiber lay down layer of blade, be laid on blade mold up and down in one of them of formwork;
(2) the formwork alignment fastens up and down;
(3) connect each injecting glue point of mould by injected rubber hose with the storage glue jar that stores resin;
(4) open each bleed off passage of second vacuum way and the valve between the vaccum-pumping equipment, close the valve between each bleed off passage of first vacuum way and the resin trap, open vaccum-pumping equipment, make the mould inside application of vacuum, and thus with resin sucking-off in the storage glue jar, be introduced in the die cavity;
(5) behind the certain hour, the valve of opening between each bleed off passage of first vacuum way and the resin trap is collected the glue that overflows, and observes the glue quantitative changeization of overflowing in each resin trap simultaneously;
When (6) increase of excessive glue amount and injection rate are basic identical in the resin trap to be seen, namely judge to be full of resin in the die cavity;
(7) close each valve, close storage glue jar, behind curing molding, take out the wind wheel blade of making.
Effect of the present invention is: because the wind wheel blade mould of of the present invention pair of vacuum system, it is a system that forming and hardening gets off, when Mold Making of the present invention, finish the pressurize of system and handed over inspection, so gas leakage possibility of having got rid of, and reduced the pipeline usage quantity, improved production efficiency; By changing the material of resin trap, can see that how many glue amounts avoids cause gatherer explosion gas leak etc. in order in time change in each bleed off passage gatherer; By increasing storage glue jar quantity, can judge easily whether each injecting glue point injecting glue amount and injecting glue speed is suitable, strengthened the process controllability of perfusion operation, promote the quality of product.