CN1681638A

CN1681638A - Cooling tube and method of using same

Info

Publication number: CN1681638A
Application number: CNA038222701A
Authority: CN
Inventors: W·内特; J·J·尼韦尔斯; R·M·昂特兰德; T·乌拉茨; Z·罗曼斯基
Original assignee: Husky Injection Molding Systems Ltd
Current assignee: Husky Injection Molding Systems Ltd
Priority date: 2002-09-19
Filing date: 2003-09-02
Publication date: 2005-10-12
Anticipated expiration: 2023-09-02
Also published as: CA2493961A1; RU2005111552A; NO20051875D0; CN1681638B; WO2004026561A2; BR0314320A; RU2296673C2; TW200416126A; JP2005538869A; IL166459A0; KR20050047542A; MXPA05002870A; CA2493961C; NZ538057A; AU2003269622B2; EP1554106A2; KR100747406B1; WO2004026561A3; NO20051875L; AU2003269622A1

Abstract

A cooling tube assembly for operating on a malleable molded plastic part. The tube assembly comprising a porous tube/insert having a profiled inside surface, and a vacuum structure configured to cooperate with the porous tube. In use, the vacuum develops a reduced pressure adjacent the inside surface to cause an outside surface of the malleable molded plastic part, locatable within the tube assembly, to contact the inside surface of the porous insert so as to allow a substantial portion of the outside surface of the malleable part, upon cooling, to attain a profile substantially corresponding to the profile of the inside surface. The cooling tube may include an extruded tube with at least one cooling channel produced by extrusion, the extruded cooling tube may be configured to operate without the porous insert.

Description

Cooling tube and using method thereof

Technical field

The present invention relates generally to cooling tube, and particularly but do not get rid of and be applicable to cooling tube used in the injection molding molding machine, for example plastic parison or preform with cooling plastic spare.More particularly, the present invention relates to the tectonic type of these cooling tubes, and relate to the method for making and using this pipe, for example be used for manufacturing process by PETG (PET) or the made preform of other analog.

Background technology

For accelerate cycle time, mould machine has developed into and has comprised cooling system after the mold of operating simultaneously with the injection-molded cycle.More precisely, when an injection cycle carries out, usually cooling system is at the previous one group of enterprising line operate of moulding article that forms after the mold of working with complimentary fashion with manipulator part stripper apparatus, and these group goods are in they suitable warm but enough solidify in the permission limited operation with regard to the demoulding still.

Mold, die cavity (nests) or the pipe of adjustment behind the molding (or cooling) are well-known in the prior art.Usually, this device is made by aluminium or other material with good heat conductive performance.In addition, known to adjustment fluid-cooled cooling tube behind the molding of molded plastic part (for example plastic parison or preform).Usually, this effective solid blank is made by traditional machining process.

In order to improve cooling effectiveness and cycle time performance, EP patent 0 283 644 has been described a kind of multidigit and has been taken out plate (take-out plate), and it has the ability of the many groups of more than one injection cycle storage preform.In other words, by preform is kept more than one injection cycle in cooling tube, make every group of preform stand the reinforcement conduction cooling of rise time.Strengthening under the cooling, improve the quality of preform.In the lucky moment, from taking out the plate ejection to (usually by mechanical ejecting mechanism) conveyer, now be in one group of cooling tube of sky so that one group of new preform is inserted into one group of preform.

European patent EP 0 266 804 has been described a kind of cooling tube that closely cooperates that uses with arm ending tool (EOAT).This cooling tube that closely cooperates is a water-cooled, and is arranged as the preform of accepting the part cooling.More particularly, after preform cools off some in the mold of sealing when, open mold, on mold die cavity and each limit of core and enter the EOAT that extends between the preform of cooling tube from the core unloading and work subsequently and conduct the outside of cooling off preform by heat.Yet along with the cooling of preform, it can shrink and therefore may contact with cooling tube is bad on its whole circumference, thereby produces uneven cooling effect.

A problem of known cooling tube setting is that preform (at certain a bit, if not from adopting that) unclamps and the contacting of cooling tube madial wall, and the loss of this thermo-contact has reduced cooling effectiveness and caused inhomogeneous cooling.Self-evident, inhomogeneous cooling can cause part defect, comprises deformation of overall shape and plastics crystallization (producing sand-blind zone).In addition, lack the contact meeting and cause ovality on the circumference of preform, the loss of cooling effect means that then preform will could take out from cooling tube under high temperature.Except causing the distortion of surface scratch and appearance and size, under excessive temperature, take out preform too early and also can cause the semi-molten outside of preform to adhere on pipe or other preform; Clearly, all these influences all are undesirable, because this causes part to be scrapped and has increased cost to manufacturer.So wish a kind of cooling tube of design, it is included in the device that obtains and/or keep in touch between the madial wall of the outer surface of preform and cooling tube.

U.S. Patent No. 4,047,873 disclose a kind of injection-blow molding mould, and wherein die cavity has the porous sidewall of sintering, so that the vacuum attraction parison contacts with the cooling tube sidewall.

U.S. Patent No. 4,208,177 disclose a kind of injection mold cavities that comprises multihole device, and it is communicated with the cooling channels that makes cooling fluid bear different pressures, so that change the fluid flow by the porous connector.

U.S. Patent No. 4,295,811 and 4,304,542 disclose a kind of injection-blow molding core with porous metals wall part.

The article of one piece " existing plastics technology " printed from the internet on July 27th, 2002, and its title is " the large-scale stretching of porous mold ", and author Mikell Knights discloses the porous instrument compound of a kind of being called " METAPOR ".This piece article discloses the technology that this material improves surface smoothness with closed pores a little and reduces porosity of polishing.

International steel die (the International Mold Steel of Co., Ltd, Inc.) one piece of article printed from the internet on July 27th, 2002, and its title is " a porous aluminum molding jig material ", author Scott W.Hopkins discloses porous aluminum molding jig material equally.More than disclosed material and use and relate to the vacuum-thermoform of plastics in its mold in two pieces of articles, wherein the vacuum that attracts by the half module loose structure sucks the plastic sheet of preheating in the single half module.

Another problem of known cooling tube is that the cost that they are made and assemble is expensive and consuming time.In addition, consider that common manipulator extraction system may comprise in a row one or more groups cooling tube, thereby the service weight of cooling tube (promptly comprising cooling water) is just most important, so the accumulating weight of manipulator supporting becomes the item (inertia or the momentum condition that promptly are used for manipulator) of important operation and/or designing institute consideration rapidly.And, in one-period, take out dozens of preform (each injection cycle of present PET system is produced up to 144 preforms) when manipulator is operated usually, so the energy that expends of manipulator and the specification requirement condition of manipulator will improve unfavourably.So robot device that high-tech requires and operation meeting thereof bring huge financial cost burden to the end user.Therefore, wish to dispose and make cooling tube according to structure and the method simplified respectively.In addition, also wish the cooling duct is configured to unlimited relatively passage, to try hard to reduce the service weight of cooling tube.

U.S. Patent No. 4,102,626 and 4,729, the 732nd, the typical prior art system, a kind of cooling tube that is formed with the external refrigeration passage of machining on outer surface of tube body is assembled to sleeve pipe on the body then shown in it, with closed channel and be liquid coolant sealing is provided seal path around the body circulation.

WO 97/39874 discloses a kind of tempering mold that is included in the annular cooling channel in its body that has.

EP 0 700 770 discloses another kind of configuration, and it comprises the inner and outer pipes assembly, forms the cooling duct with between.

U.S. Patent No. 5,870,921 disclose a kind of extrusion die, are used for the Al-alloy products of production extrusion modling or have the pipe that limits the inside dimension space.

Summary of the invention

According to a first aspect of the invention, provide the structure and/or the step of on the toughness molded plastic part, operating for the pipe assembly.The pipe assembly comprises antipriming pipe, and it has the moulding inner surface; And vacuum structure, it is configured to match with antipriming pipe, in use to form the pressure that reduces near inner surface.The pressure that reduces makes the outer surface of the toughness molded plastic part that is positioned at the pipe assembly contact with the inner surface of porous insert, so that the essential part of the outer surface of toughness part is obtained and the corresponding substantially profile of inner surface profile when cooling.In one embodiment of the invention, antipriming pipe is cylindrical, and by antipriming pipe being placed body and providing vacuum structure by the vacuum passage that at least one contiguous antipriming pipe outer surface is provided and in use is used to connect vacuum source.

The antipriming pipe inner surface has basically (if not according to high tolerance) and is the in-profile of moulded component final size, and the antipriming pipe of each embodiment of the present invention makes moulded component reshape to the accurate net shape by the insert contour limit when cooling effectively.In fact, the vacuum of the reduction pressure by the porous material effect/effectively is in fact as sucking net shape with the toughness preform, guarantees simultaneously to optimize cooling by contacting with the path continuous surface with the high heat sink material of the thermal efficiency.

According to a second aspect of the invention, injection molding machine structure and/or step are provided with the molded structure of at least one working of plastics of molding.In addition, at least one porous cooling die cavity is configured to keep and cool off this at least one plastic part after at least one working of plastics is by the molded structure molding.At least one vacuum passage is configured to respectively a pressure that is lower than environment is offered this at least one porous die cavity, so that the inner surface of this at least one porous die cavity of at least one working of plastics and this contacts.

According to a third aspect of the present invention, provide structure and/or the step that is used to accept have the molded plastic part of certain profile for the pipe assembly.The pipe assembly that contains the porous substrate includes inner surface and outer surface, at least a portion profile of the profile reflection molded plastic part of this inner surface; And being positioned near the vacuum passage of outer surface, this vacuum passage is in use supported the initial formation from the porous outer surfaces of substrates to its inner surface pressure reduction, molded plastic part that is held to impel in use and the contact between the inner surface.

According to a fourth aspect of the present invention, for providing, the pipe assembly is used for the structure and/or the step of on the toughness molded plastic part, operating.The pipe assembly comprises body and is arranged in the porous insert of body.The porous insert comprises inner surface and outer surface, at least a portion profile of the profile reflection molded plastic part of inner surface.The pipe assembly also comprises the vacuum passage that at least one is communicated with porous insert fluid.Vacuum passage is configured in use be connected with vacuum source, so that near inner surface, form the pressure that reduces, cause the outer surface of the toughness molded plastic part that is positioned at the pipe assembly to contact, thereby allow the essential part of toughness part outer surface when cooling, to obtain and the corresponding substantially profile of inner surface profile with inner surface.The pipe assembly also comprises cooling structure, and it is configured in use be connected with thermal dissipating path, so that cooling and the contacted molded plastic part of porous insert inner surface.

According to a fifth aspect of the present invention, a kind ofly be used for method that the toughness molded plastic part is shaped and comprise the steps: that (i) packs molded plastic part in the antipriming pipe into; The pressure of reduction (ii) is provided near the inner surface of antipriming pipe moulding so that a part of outer surface shift-in of molded plastic part contacts with it, and and then obtain corresponding substantially shape; (iii) from molded plastic part, absorb heat, require assurance to keep the degree of the external surface shape of molded plastic part at least so that molded plastic part is cured to by thermal dissipating path; (iv) release moulded plastics articles; Wherein, the outer surface of molded plastic part has the net shape that the inner surface by the antipriming pipe moulding limits.

According to a sixth aspect of the invention, structure and/or step are provided for the arm ending tool.The arm ending tool comprises: board, and it in use is used for being mounted to the manipulator of molding system; Be arranged in pipe assembly on the board with at least one.The pipe assembly is configured in use accept molded plastic part.The pipe assembly comprises the antipriming pipe with inner surface and outer surface, at least a portion profile of the profile reflection molded plastic part of this inner surface; And vacuum structure.Vacuum structure is configured to match with antipriming pipe, so that in use near inner surface, form the pressure that reduces, cause the toughness molded plastic part outer surface that is positioned at the pipe assembly to contact, thereby the essential part of toughness part outer surface is obtained and the corresponding substantially profile of inner surface profile when cooling with the inner surface of porous insert.

According to a seventh aspect of the present invention, structure and/or step are provided for the pipe assembly.The pipe assembly comprises pipe and the fluid flow structure with the suprabasil inner surface of the porous of being located at.Fluid flow structure is configured to match with the porous substrate, contact so that the outer surface of the toughness molded plastic part that is positioned at the pipe assembly is inhaled into inner surface, thereby the essential part of toughness part outer surface is obtained and the corresponding substantially exterior contour of inner surface profile when cooling.

According to an eighth aspect of the present invention, structure and/or step are provided for its at least a portion external surface shape by the molded plastic part that antipriming pipe moulding inner surface limits.This molded plastic part is shaped by following step: in the antipriming pipe of (i) the toughness molded plastic part being packed into; (ii) near the inner surface of described antipriming pipe moulding, reduce pressure,, thereby obtain basic and the corresponding shape of moulding inner surface so that the outer surface part shift-in of molded plastic part contacts with the moulding inner surface of antipriming pipe; (iii) from molded plastic part, absorb heat,, make the profile that keeps molded plastic part with curing mold working of plastics fully by thermal dissipating path; (iv) release moulded plastics articles.Wherein the outer surface part of molded plastic part presents the surface smoothness of reflection porous insert moulding inner surface.Antipriming pipe is preferably formed by the porous substrate with moulding inner surface, and this moulding inner surface has the gap that preferably is about in the 3-20 micrometer range.

According to a ninth aspect of the present invention, for the cooling tube of injection moulded plastic article provides structure and/or step, this cooling tube be extruded be defined as have inner surface, the cylindrical tube of outer surface and at least one cooling duct.

According to a tenth aspect of the present invention, injection molding machine structure and/or step are provided with the mold structure of a plurality of working of plastics of molding.The cooling die cavity of a plurality of extruding provides and is configured to keep after a plurality of working of plastics are by the mold structure molding and these a plurality of working of plastics of cooling.Each cooling die cavity comprises a plurality of by pushing qualification and be configured to guarantee that cooling medium flows through a plurality of cooling die cavitys so that the cooling duct of absorbing heat when a plurality of working of plastics are kept by a plurality of cooling die cavitys from a plurality of working of plastics.

According to an eleventh aspect of the present invention, a kind of method that is used to push the cooling tube of injection moulded plastic article comprises that extruding has inner surface, the step of the hollow aluminum pipe of outer surface and at least one cooling duct.

According to a twelfth aspect of the present invention, the pipe assembly comprises the tubulose porous insert that is used for the vacuum forming moulding article and improves cooling effectiveness.The porous insert comprises that profile is substantially corresponding to the inner surface of the finally predetermined molded surface of moulding article.Pressure channel in the porous insert is for setting up lower vacuum pressure district and for the loose structure exhaust by the porous insert provides conduit, contacts with the shaping inner surface thereby deformable molded article sucked.

The present invention advantageously provides a kind of pipe structure for cooling, and its effect is the working of plastics that cools off the molding just that is positioned at cooling tube quickly and effectively, thereby improves the robustness of preform and increase circulation timei comprehensively.In addition, owing to preform causes cooling PET and do not wish to produce under the situation of acetaldehyde after being subjected to relatively-high temperature for a long time, rapid cooling provided by the present invention has advantageously reduced the danger of the unacceptable high-load acetaldehyde of appearance in final plastic products (such as container for drink).Advantageously, the present invention attempts to keep the shape that moulded component (such as preform) is required and limited.

In addition, the present invention has advantageously provided a kind of extruding cooling tube, and this cooling tube is easy to make and be light structures, thereby advantageously reduces the specification requirement of manipulator and/or the operational cycle time of improvement manipulator.In addition, because pipeline is improved and forms integral body, thereby cooling tube has strengthened cooling capacity.

In addition, optional embodiment of the present invention provides the pipe assembly that can vacuum forms moulding article.

Description of drawings

With reference now to accompanying drawing, exemplary embodiments of the present invention is illustrated, in the accompanying drawings:

Fig. 1 is the typical injection molding machine plane that comprises manipulator and arm ending tool;

Fig. 2 represents cooling tube assembly sectional view according to the preferred embodiment of the invention;

The cross section zoomed-in view of Fig. 3 presentation graphs 2 embodiment cooling tube assemblies wherein has the new moulded component of just having packed into;

The sectional view of time chart 2 cooling tube assemblies after Fig. 4 is illustrated in;

Fig. 5 represents the cooling tube assembly sectional view of other embodiment;

The view in 5-5 cross section in Fig. 6 presentation graphs 5;

Fig. 7 represents the cooling tube assembly sectional view of second other embodiment;

Fig. 8 represents the cooling tube assembly sectional view of the 3rd other embodiment;

Fig. 9 is a cooling tube sectional view according to the preferred embodiment of the invention;

Figure 10 is the view along Fig. 9 cooling tube ' A-A ' cross section;

Figure 11 is the stereogram of cooling tube porous insert; And

Figure 12 is the cooling tube sectional view of the optional embodiment according to the present invention;

The specific embodiment

Now just embodiment describes the present invention, and wherein the porous cooling tube is used for the injection molding molding machine, although the present invention is equally applicable to any technology of being born this part of cooling after part forming by cooling tube or other similar device.For example, the present invention can be applicable in the part connecting gear of injection molding machine and blow molding die molding machine.

Fig. 1 illustrates a kind of typical injection molding machine 10 that can match with the device of supporting cooling tube of the present invention.During each injection cycle, mould machine 10 is produced a lot of plastic preforms (or parison), and its number is equivalent to by being positioned at the number of cavities that machine 10 complementary mold halves 12,14 limit.

Do not having under the situation of particular restriction, injection molding machine 10 comprises molded structure, such as fixation clip 16 and movable pressing board 18.In operation, movable pressing board 18 moves by means of stroke cylinders (not shown) or other similar device with respect to fixation clip 16.Can understand easily, in machine, produce clamping force by the mechanical grip mechanism (not shown) that uses connecting rod 20,22 and utilize hydraulic system to produce mold clamping force (being closed tonnage, (closure tonnage)) usually.Half module 12,14 constitutes the mold that has one or more die cavitys 22,24 usually together, and half module 12,14 lays respectively among movable pressing board 14 and the fixation clip 16.Near fixation clip 16 and movable pressing board 14, be provided with manipulator 26, with carrier arm ending tool (EOAT) 28, such as taking out plate.Take out plate 28 and comprise a plurality of preform cooling tubes 30, its number is equivalent to the number of the preform 32 produced in each injection cycle at least, and can be its multiple.In the use, at die sinking position (as shown in Figure 1), manipulator 26 will take out plate and move into common the aligning with the mold core side and wait subsequently, enter the corresponding aligning cooling tube 30 up to by operation stripper plate 33 moulding article (for example preform 32) being peeled off from each core.

Cooling tube 30 is shaped usually and reflects the exterior contour of moulding article (for example preform 32), therefore under PET preform situation, cooling tube 30 is preferably the hollow tube at cylindrical beginning, each pipe has the passage that its bottom is connected to vacuum or pump unit 34, and unit 34 is used for attracting and/or just preform 32 being remained in the pipe 30.

Usually, take out plate 28 by connecting suitable radiator and/or cooling off by complex art, it comprises the internal water passage that will illustrate.

Fig. 2 illustrates cooling tube assembly 50, and it comprises preferably and is about the inside porous insert 52 that the porous aluminum material in 3 to 20 micrometer ranges is made by for example porosity.The porosity characteristic of substrate is obtained by its material structure or chemical scavenging (or adjustment) treatment process usually, is introduced in the substrate in chemical scavenging treatment process intermediate gap, thereby is created in the internal structure that is similar to honeycomb or sclerosis sponge in a way.The present invention can utilize and pass the communication passage that size exceeds the base material of 3 to 20 micrometer ranges, though with regard to preferred embodiment as herein described and for example METAPOR that buys has easily been stated in speech on market ^TMAnd PORCERAX ^TMSuch material (both produce by international steel die Co., Ltd).In any case porosity is the function of surface smoothness, will be understood that the machining on surface may influence the porosity that passes material.In a preferred embodiment, inner porous insert 52 is made by the structure with certain intensity and mechanical elasticity performance, although inner porous insert also can be made by the material of similar graphite.Preferably inner porous insert 52 is heat conductors, and especially preferably its heat conductivility is good, for example the composite of Metal Substrate or sintering.

Be appreciated that METAPOR ^TMBe the mixture of aluminium and epoxy resin, its mixing ratio is greatly between 65-90% aluminium powder and 35-10% epoxy resin.

Typical cooling tube assembly 50 can have the inner length size of about 100 millimeters (mm), and internal diameter is about 25mm, and external diameter is about 40mm, and these sizes have reflected the size of moulding article.Certainly, diameter that can pipe manufacturer is different and length are to adapt to the concrete shape of the preform that is cooled.

From the viewpoint of practice, porous insert 52 is preferably placed in the body 54 that is surrounded by sleeve pipe 56.Cooling duct (or path) 58 can be chosen contiguous body 54 wantonly and end or formation, and transmits cooling fluid (for example air, gas or liquid), with cooling body 54 and insert 52, thereby absorbs heat in the molded plastic part from porous insert 52.Each cooling duct is preferably configured as has the cross section that comprises a plurality of arc elongated slots, and these grooves surpass 50% circumference extension around corresponding cooling die cavity internal diameter.On the other hand, body 54 direct heat simply is coupled to radiator, to reduce the combination general weight of pipe and arm ending tool 28, as long as radiator can absorb heat fully from preform in the unit interval.

Sealing 60-63 between sleeve pipe 56 and the body 54 comprises cooling fluid in groove 4.Passage 66 is ended on the outer surface of porous insert 52 or is formed, and the device that applies vacuum by the loose structure of porous insert 52 is provided.

Except passage 66, the outer surface of porous insert 52 is configured such that and keeps the surface of good contact between insert 52 and body 54, thereby the heat of optimizing from the porous insert to molded plastic part is conducted.Apply vacuum by the porous insert like this, to cause that molded plastic part 32 its sizes of expansion of newly packing into as shown in Figure 3 are to contact the inner surface 82 of porous insert, as shown in Figure 4.Therefore, heat is transmitted to porous insert 1 and arrives the body 54 that cools off through porous insert 1 from molded plastic part 32.Amplify in Fig. 3 the position that should be noted that the dome portion 80 of preform 32, and the typical case that Fig. 3 is a preform when being imported into cooling tube assembly 50.

Under the situation that applies suction or vacuum, the pressure of environment occurs being lower than in insert 52 outsides, thereby cause air to flow through porous insert 52 and flow channel 66 from the inner surface 82 of porous insert 52.Above-mentioned suction causes occurring being lower than at the outer surface of molded plastic part the pressure of environment again, causes its immigration to contact with the inner surface 82 of porous insert 52.

At the METAPOR that has 3-20 micron gap ^TMIn the PET environment of insert, the system of can be obtains the working vacuum pressure (utilizing the U3.6sBecker vavuum pump) of about 10 to 30 inch of mercury scopes.Yet, should be appreciated that the vacuum pressure that adds finally determines (and being its function) by the mechanical performance of plastic material.

Certainly, replace applying vacuum, also can (by means of fluid ejector and lip packing) normal pressure be applied to the preform the inside, so that preform touches at least a portion inner surface of cooling tube, though this needs sealing system from the outside of preform.Therefore according to the shape of part and the cycle period of cooling, any suitable pressure reduction can be applied between the outer surface of the inner surface of cooling tube and working of plastics.Preferably, the whole outer surface of preform (cylindrical outer surface and terminal spherical outer surface, be dome 80) touch porous insert cooling tube, though in fact the exterior contour of preform may stop it forward, the contiguous any inwardly gradually thin part 84 of preform 32 necks for example.Yet according to the part of working of plastics design and needs cooling thereof, cooling tube and vacuum structure can be designed so that any part of preform contacts with cooling tube.In addition, vacuum (or normal pressure) can one, two or three or more apply in the multistage, distribute with the difference cooling that reaches working of plastics.For example, the thick part of preform is directly contacted with cooling tube, and the thin part of preform can be contacted with cooling tube in the later stage.In a word, the time of preform and cooling tube 50 full contacts just can not caused the possibility of any damage again for the operation that strengthens preform, and this depends on material, size and the shape of cross section of preform.

Can reduce the porosity of porous insert 52, improving the surface smoothness (being inner surface 82) with the contacted porous insert 52 of molded plastic part, thereby and with any vestige (marking) on moulded component surface degree that minimizes.Yet the porosity that reduces insert 52 has also reduced the air mass flow through wherein.Can allow the flow of appropriateness to reduce, because this can seriously not hinder the effect that forms vacuum or reduce its intensity, in case particularly because the surface of moulded component touches insert, then all air-flows all can stop.Air velocity only influences when moulded component 32 and enters the speed that pipe forms vacuum 52 time at first.The reduction of porosity obtains by milling and grinding technics, and other grinding or discharge processes step can be removed chip from surface gap, to increase porosity.In any case, be understood that easily the flow rate that flows through material is the function of impressed pressure and porosity.

In cooling tube 50 the insides, because moulded component part when becoming molded plastic part is cooled off but still had tough sexual state, vacuum will make the diameter of molded plastic part perhaps also have extended length.Moulded component is subjected to being applied to the vacuum on its most of outer surface, and its inner surface is exposed to environmental pressure.

In Fig. 5, part further entered pipe 50 when the support ledge 100 of moulded component 32 prevented this part cooling and contraction.At this moment, vacuum is with in the further induction pipe of the blind end of part, and support ledge then prevents the opposite end follow-up.In all embodiments, vacuum causes part to change shape, makes and eliminates the gap that is present at first between part outer surface and porous insert 52 respective inner surfaces basically.

For having the radially molded plastic part of feature (for example inwardly gradually thin part 84), their shape can not change basically during above-mentioned extension phase.The structure of porous insert 52 inside dimensions and size are made like this, diameter and the part respective diameters that is cooled are complementary or big slightly, thereby prevent the remarkable disfigurement of working of plastics shape.

End sealing 104 (Fig. 3) at 50 beginnings of cooling tube provide in assembly the device that initially forms (keeping when needing) vacuum and continue to cause part 8.If porous insert 52 has not and preform part engaging portion, zone 106 below support ledge 100 for example shown in Figure 4, so just need end sealing 104 to guarantee that moulded component keeps contacting with inwall 82, and when part 8 coolings, prevent its contraction thus, otherwise can omit end sealing 104.If vacuum do not occur, therefore the contraction meeting of part 8 forms gap (and cause suction losses) between the interior cooling wall of part outer wall and insert 52, thereby greatly hinders from part to insert 52 and the heat conduction that enters cooling tube.Therefore, the closely contact of maintenance between moulded component outer surface and insert inwall 82 that continues to have given security of vacuum is so that cooling performance reaches at utmost.

Get back to Fig. 3, pipe assembly 50 preferably is fastened to board or is taken out plate 110 by screw 112.Insert 52 is remained in the assembly by the collar 114, and the collar 114 is screwed in the end of body 54 or with the fastening or combination of any other conventional apparatus.In board 110, be provided with cooling channels import 116 and cooling channels outlet 118.On board 110, also be provided with vacuum passage (or path) 120.Through after sufficient cool time, replace vacuum (by putting upside down the function of vavuum pump) with compressed air stream, by above-mentioned pressure part is released from pipe assembly 50.

The optional embodiment of Fig. 5 and 6 expression cooling tubes 150 wherein replaces body 54 and sleeve pipe 56 with the extruded tube that contains the monoblock type cooling duct.Aluminium extrusion 152 constitutes body and contains monoblock type cooling duct 154, and these cooling ducts 154 alternately are connected with each other by the groove 156 of each end of pipe.The end of sealing ring 158 sealed tubes is to improve the integrality of cooling circuit.Porous aluminum insert 160 with outer grooves 162 of being used as vacuum passage is by pad 164 that is fixed to pipe by screw thread or any other traditional retention mechanism and the collar 166 location (in cooling tube 150).The pipe assembly is by any suitable external clip device, and for example bolt 168 is fastened on the board 110.This optional embodiment is owing to its pressing body parts have lower manufacturing cost and improved cooling effectiveness.

Fig. 7 represents to have second optional embodiment that difformity is used to cool off moulded component.In this arrangement, the end sealing (Reference numeral 104 among Fig. 3) between below cooling tube top and support ledge 100 is unnecessary.Porous insert 200 is screwed to cooling tube (at this moment being extruded tube 152) top by screw thread 202 or remains in the extruded tube 152 by the fastening collar 201 of any appropriate device.Usually the collar of being made by aluminium or other analog 152 extends internally, so that be consistent with the in-profile shape 204 at 200 beginnings of insert, the in-profile shape at 200 beginnings of insert is complementary with the part shape that is cooled or is slightly larger.The collar 201 provides the sealing of abundant usefulness, so that vacuum is applied on the porous insert, causes the accessory size expansion, thereby closely cooperates with the inner surface of insert and cool off.In some cases, part is preferably in Guan Zhongwei than loose fit when entering pipe at first.At this moment, Fig. 8 is illustrated in after the part of packing into than loose fit, and how lip packing 210 provides necessary initial sealing, so that vacuum works.

Structure and using method (in operating environment) that the present invention strengthens the cooling tube of cooling and part forming have below been described.Speak briefly, have by grinding or extruding according to the porous cooling tube of one of embodiment of the invention structure that the cooling tube assembly of porous cooling tube insert and optional but not preferred cooling channels makes.Can polish, paint the porous insert or other processing, to reduce porosity and higher fineness to be provided for the outside of moulded component.But the cooling channels integrally closed perhaps can form by sleeve pipe is set on the open channels that is formed at porous insert outer surface in the inside of pipe.Vacuum passage can grinding or extruding on the outer surface of porous insert, and the independent structure of contiguous porous insert outer surface perhaps can be set.The blind end of cooling tube can be machined into pipe, perhaps can comprise a connector that matches with the cooling drums openend.Subsequently suitable seal is filled to any end of cooling tube, so that reach required as mentioned above pressure control.

In operation, just the cooling stations that is provided with one or more cooling tubes is extracted and be transported to by board to the working of plastics of molding from die cavity.Working of plastics is inserted into cooling tube, and preferably sealed therein.Then, vacuum (or partial vacuum) is applied to its inner surface by the porous insert from its outer surface, so that the length of working of plastics and diameter expansion, thereby contact with the inner surface of porous insert.Cooling fluid circulates by the cooling duct, and from the heat absorption of porous insert, and the porous insert absorbs heat from moulded component.After finishing abundant cooling (when the outer surface of moulded component has cured and obtain enough hardness), discharge vacuum, again moulded component is released, for example, ejection is in canister.When needing, can apply normal pressure, so that moulded component is extruded from cooling tube by vacuum passage.

Thereby what described is a kind of new-type local cooling tube assembly that cools off the modified cooling of moulded component that is used for, and it provides a kind of device that the surface closely contacts between the interior cooling surface that keeps part outer surface and pipe during the cooling cycle.Cooling device preferably uses vacuum after the disclosed mold, to expand part a little, makes the contact cooling surface, and keeps in touch when part cools off, and tries hard to part is inhaled the contraction of opening cooling surface thereby clear up.

The present invention may also be described with respect to embodiments, and wherein cooling tube comprises extruded tube.The extruding cooling tube has specific use in the injection molding molding machine, although the present invention is equally applicable to any technology of being born this part of cooling after part forming by cooling tube or other similar device.For example, the present invention can be applicable in the part connecting gear of injection molding machine and blow molding die molding machine.

Fig. 9 represents cooling tube 350 sectional views of the embodiment of the invention.Cooling tube 350 preferably includes the integral tube 352 of extruding, and it has outer surface 384, be used for the inner surface 382 of working on preform 32.Cooling tube 350 comprises the cooling circuit that is used to cool off inner surface 382, and it comprises the vertical cooling duct 354 that forms by between inner surface 382 that is squeezed in pipe 352 and the outer surface 384.Cooling duct 354 is linked together with predetermined flow configuration by the interface channel 356 of arbitrary number and the cooling circuit that is connected to cooling medium source and radiator by import and exit passageway 390 and 392.Interface channel 356 is positioned at the top and the bottom of pipe 352, between outer surface 384 and inner surface 382, and extends between two or more cooling ducts 354.One side of interface channel 356 is by sealing ring 358 sealings.The sealing ring 358 that comprises sealing 359 is remained in the groove of cooling tube 350 tops and bottom by snap ring 366 or other known fastener.Cooling tube 350 also comprises the central plug 364 of inserting its bottom and being kept by shoulder 367, and central plug 364 comprises be used to the shaping inner surface 303 that supports or work on preform 32 bottoms.Central plug 364 also comprises the pressure channel 394 that is used to be connected to vacuum source, so that help preform 32 to be conveyed into cooling tube 350.The cooling medium inlet of cooling circuit and exit passageway 390 and 392 are located in the central plug 364.

Pipe 352 preferably includes the monoblock type extruded tube with vertical cooling duct 354, and it can have the cross-sectional profiles that is selected from shape of all kinds.Except that using length to be about the cutter of 4 times of diameters, it is normally unpractiaca to utilize traditional Machining Technology (for example milling) to process the passage 354 of shape as shown in figure 10, thereby the length restriction of the cooling tube that will make in this way is among a small circle unaccommodated.Therefore, extruded tube can think to have its length of monoblock type cooling duct usually greater than the extruded tube that is four times in cooling duct 354 minor diameters, perhaps thinks the extruded tube with constant substantially non-cylindrical cooling duct 354 shapes.

The cooling duct 354 that is shaped by extrusion process provides passage for cooling fluid circulation in pipe, and the inner surface 382 by pipe absorbs heat from preform 32.Cooling tube can comprise four cooling ducts 354 (as shown in figure 10).The shape of passage 354 is preferably arc elongated groove, and it shows bigger frigorimeter area than boring.The cumulative angle amount of all elongated slots is preferably greater than 180 degree, and the angular metric of each elongated slot is and the angle measurement of the concentric camber line of cooling tube with its terminal point that this terminal point limits the maximum arc length of whole elongated slot.Use this shape to be used for optimizing the heat conduction of preform 32, its result from coolant distribution along the essential part of contact preform 32 inner surfaces 382 with and near the extension and the high volumetric flow rate of being born that also results from by coolant guiding channel 53 big cross-sectional profile.In addition, the cross-sectional profile of preferred coolant guiding channel 354 also guarantees the cooling tube 350 of relative lightweight, thereby the gross weight of reduction board assembly 11, if some board assembly comprises that pipe is more than 432 (being that the board assembly has 3 groups of cooling tubes 144), this reduction is sizable so, thereby make load lighter and and then reduce the cost of used manipulator and/or plate moved quickly, therefore save some circulation timeis and cut down the consumption of energy.

In optional embodiment of the present invention, four arcuate channels shown in Figure 10 can only become two bigger arc (not shown), so that a passage is represented input, another represents output, thereby simplify interface channel 356.

Central plug 364 preferably includes and is configured as the basic shaping inner surface 303 that is complementary with the part that is cooled.Central plug 364 is preferably made from aluminum, and it acts on is the gate area of cooling preform, with the qualification vacuum passage, and is convenient to when needed the cooling duct is bonded to board 11.Pressure channel 394 preferably is located at the connector center.In one embodiment, central plug 364 is maintained at cooling tube shoulder 367 and takes out between the plate 28.Pipe securing member 368 is set, cooling tube 350 is bonded to taking-up plate 28 such as screw or bolt.The device that also can use other assembling connector 14 and cooling tube 350 is fastened to taking-up plate 28.

The cooling tube 350 typical actual sizes that are used for the optional preform 32 according to the present invention are recommended as the about 100mm of typical length, and internal diameter is about 25mm, and external diameter is about 41mm.For so optional cooling tube, cooling duct 354 preferred thickness are about 1-4mm, and girth is about 80mm, and axial length is about 100mm (preferably with the same length of pipe).Certainly, the pipe of different-diameter and length can manufacture the geometry that is fit to any preform 32, and and then makes coolant guiding channel 354 sizes have a lot of variations.Cooling tube 350 is preferably made from aluminum.

According to the present invention, use extrusion process to be shaped and comprise that the pipe 352 in cooling duct and hole, this hole dimension are preferably set to less than any predetermined working of plastics that will cool off in pipe.Extrusion process is consistent with the prior art.Therefore manage 352 and be cut to due length and molded surface, and any other required details of machining (such as interface channel 356, sealing ring 358 grooves and any cooling medium inlet/outlet or pressure channel, integrated structure etc.) subsequently.The machining central plug 364 then, and comprising increases required details (such as cooling medium 390,392 and pressure channel 394).Thereafter will have the central plug 364 that seals that is necessary and pack in the cooling tube 350, the sealing ring 358 that will have sealing 359 is again packed in the sealing ring groove on cooling tube 350 tops and the bottom, and therefore whole assembly can install at any time and take out on the plate 28.

In a preferred embodiment, the interface channel 356 of managing 352 tops can provide by the whole cooling duct of machining 354 dividing wall (not shown) at interval.In pipe 352 taking-up plate 28 ends (bottom), the similar alternate separation walls (not shown) of machining is to connect cooling duct 354 and to form and being connected of cooling fluid intake channel 390 and cooling fluid exit passageway 392.On the other hand, the cooling duct in the tube wall 354 can be connected directly to the respective apertures of taking out on the plate 28.

In the optional embodiment of the present invention (not shown), cooling tube is extruded and is defined as cylindrical tube, and it has inner surface, outer surface and at least one and is formed at cooling duct 354 on pipe 352 outer surfaces.Tubular sleeve surrounding tube 352 cooperates, thus sealing cooling duct 354.Between pipe 352 and sleeve pipe, be provided with sealing, connect so that watertight to be provided.The cooling duct can connect as described in the preferred embodiment of the present invention of front.

In the optional embodiment of the present invention (not shown), cooling tube is extruded and is defined as cylindrical tube, it has inner surface, outer surface and at least one and is formed at cooling duct 354 on the tubular sleeve outer surface, and this tubular sleeve surrounding tube 352 cooperates, thus sealing cooling duct 354.Between pipe 352 and sleeve pipe, be provided with sealing, connect so that watertight to be provided.The cooling duct can connect as described in the preferred embodiment of the present invention of front.

In operation, be similar to US4, the such cooling tube that uses described in 729,732.The inside dimension of cooling tube preferably is slightly smaller than the external dimensions of the preform that is cooled.Thereby along with prefabricated blank is shunk, its external dimensions reduces, and the vacuum that acts on whole central plug further sucks cooling tube with part, causes the outer surface of preform to keep closely cooperating or contacting with the inner surface of cooling tube.On the other hand, it is identical or big slightly with the external dimensions of the preform that is cooled that the inside dimension of cooling tube can manufacture, so that make vacuum air-flow can be inhaled the outer surface of part.

In more detail, after preform is shaped on injection molding machine, leave fixation clip 16 mold is opened by impacting movable pressing board 18, mechanical arm (carrying board assembly 11) moves between half module 12 and 14, so that cooling tube 50 can be accepted from one group of preform 32 of core 23 releases.Can utilize the suction that applies to impel preform 32 to be sent to cooling tube 350 and/or preform is remained on wherein from core 23.Board assembly 11 shifts out between half module 12,14 subsequently, and location then is so that near board assembly 11 order or be placed in selectively cooling stations, receiving terminal or the conveyer.Preform can be sent to the there then.

Except the cooling performance that improves cooling tube, on the reduction manufacturing cost, also has very big benefit.Owing to significantly reduced the machining requirement, benefited can reducing from the cost of making pipe with respect to tradition according to extruding cooling tube of the present invention.

In the optional embodiment of the present invention (not shown), the pipe assembly 350 of Fig. 9 can change into and comprise tubulose porous insert 452, as shown in figure 11, along the inner surface 382 that is used for vacuum forming preform 32, and because better heat-transfer interface (being the contact of large surface area and cooperation more closely) has improved the cooling effectiveness of preform 32.Therefore, certainly do not apply for No.10/246 with reference now to being total to, 916, it proposed on September 19th, 2002, and title is " cooling tube that has the porous insert ".Porous insert 452 comprises inner surface 482 and outer surface 483, the final predetermined molded surface basically identical of the shape of inner surface 482 and preform 32, and outer surface 483 can be separated by one group of longitudinal pressure passage 466.Pressure channel 466 is provided with conduit, be used between inner surface 482 and outer surface 483, forming very low vacuum pressure district near the part of porous insert 452, thereby the loose structure by porous insert 450 is bled, contact with the shaping inner surface 482 of porous insert 452 so that will be out of shape preform 32 suctions, the vacuum forming preform 32 thus.Porous insert 452 is done such as aluminum preferably by the height Heat Conduction Material.The material of porous insert selects feature also to be, requires the porosity of loose structure preferably to be about the 3-20 micrometer range.In addition, porous insert 452 advantageously can be made in containing the operation of pressing steps.

Figure 12 illustrates another optional embodiment of the present invention, wherein is provided for the pipe assembly 450 of vacuum forming preform 32.Pipe assembly 450 comprises the pipe 454 that can be formed by existing pipe machined, but also can use extruded tube, such as pipe 352 (as shown in Figure 9).Pipe 454 comprises the insert hole 455 that holds porous insert 452, as shown in figure 11.Porous insert 452 is remained in the pipe 454 by central plug 464, and central plug 464 is contained in first and second plug holes 457,458 of pipe 454.Central plug 464 also leans against on the step between first and second plug holes 457,458 by its shoulder 467 and remains in the pipe 454.Shoulder 467 on the central plug 464 is corresponding to the step on central plug 464 diameters, and central plug 464 upper ends have narrowed portion, and it is in central plug 464 and manage between 454 second plug hole 458 and be provided with circular passage 465.Circular passage 465 couples together the pressure channel 466 of porous insert 452 and the passage 420 that is formed on the central plug 464, and passage 420 in use is connected to first vacuum passage that takes out on the plate 28 again.Central plug 464 comprises the shaping inner surface 403 that corresponds essentially to preform 32 dome portion, and it can be used for being shaped and cooling off this zone.Central plug 464 also comprises import and outlet cooling passage 490,492 and pressure channel 494, is respectively applied for second pressure channel that is connected on cooling liquid inlet and exit passageway 116,118 and the taking-up plate 28.The import of central plug 464 and exit passageway 490,492 also are connected to the cooling groove 493 that is formed on pipe 454 outer surfaces, thereby form cooling circuit.Pipe assembly 454 also comprises the sleeve pipe 456 that remains on pipe 454 outer surfaces.Also be provided with sealing 459 at sleeve pipe 456 with between managing 454 and, be connected with watertight so that formation is airtight between the parts that constitute pipe assembly 450 in central plug 464 with between managing 454.Pipe 454 also is included in the groove that its opening part is used to hold end sealing 404, end sealing 404 in use forms gas-tight seal between preform support ledge 100 and pipe assembly 450, being enclosed in the volume that forms between preform 32 and the pipe assembly 450, thereby enable to form required low vacuum forming pressure.The critical piece of pipe assembly 450 is preferably made by the height thermal conducting material, for example aluminium.Now the operation that is contained in pipe assembly 454 on the board assembly 11 taking-up plates 28 is described.Take out plate 28 and provide cooling fluid import and the exit passageway and first and second vacuum passages, with corresponding to the aperture on the central plug 464.In use, preform 32 is applied in the suction suction pipe assembly 450 of high flow velocities of whole pressure channel 494, is pasting end sealing 104 and stops air thus and flow as long as preform support ledge 100 is sealed, just further keeps preform 32.Then by the vacuum passage on the central plug 464 420, then apply high vacuum, so the porous wall of the whole porous insert 452 of vacuum action by circular passage 465 and pressure channel 466.Air capacity between preform 32 and porous insert 452 inner surfaces 482 is found time to small part, sucks with the outer surface with preform to contact with porous insert 452.In case contact with porous insert 452, preform 32 just cools off by conduction, its heat flows to porous insert 452, pipe 454 again to circulating cooling medium by path from preform outer surface.Guarantee to keep its shape in case removed enough heat from preform 32, the just high vacuum of the whole vacuum passage 466 of release action, and apply normal pressure by pressure channel 494, to help release preform 32.

Thereby, porous insert, the various advantageous embodiments of pipe assembly that what described is the extruding cooling tube that is used for working of plastics, use with the pipe assembly that is used for the vacuum forming preform, make the method for above-mentioned parts and the method for using the pipe assembly, the quality that this will reduce the cost of injection-molded this pipe greatly and/or improve molding preform 32.

More than all U.S. and foreign patent documents of Lun Shuing and article are introduced in the DETAILED DESCRIPTION OF THE PREFERRED as a reference hereby.

In the accompanying drawing outline illustrate or each parts of representing by square all well-known in injection-molded technology, their special structures and operation are not the limit for implementing operation of the present invention or best mode.

Although just invention has been described for the preferred embodiment of how considering at present, should be understood that the present invention is not limited to the disclosed embodiments.On the contrary, predetermined various modifications and the equivalent arrangements that is included in claims purport and the scope that cover of the present invention.For example, though the preferred embodiments of the present invention have been discussed the present invention by the porous insert, but should be understood that in fact the heat conduction that insert can be by putting on molded housing but porous coating are realized, but use insert to help making easily and assembling.Should be understood that the application of cooling technology is not limited to size or weight (for example preform), the key of qualification is to form the ability that contacts between outer surface that vacuum impels moulding article and the porous, shaped housing substrate inner surface.In addition, although pipe assembly of the present invention is being described aspect the injection molding molding machine, but should be understood that, the present invention is equally applicable to any technology of being born this part of cooling after part forming by cooling tube or other similar device, for example the part connecting gear between injection molding machine and the blow molding die molding machine.The scope of following claim is consistent with topmost explanation, so that comprise modification and equivalent 26S Proteasome Structure and Function that all are such.

Claims

1. one kind is used for the pipe assembly operated on the toughness molded plastic part, and this pipe assembly comprises:

Antipriming pipe, it has the moulding inner surface; With

Vacuum structure, it is configured to match with described antipriming pipe, so that the pressure of reduction in use to be provided near described inner surface, cause the outer surface of the toughness molded plastic part that is positioned at the pipe assembly to contact, thereby the outer surface essential part of toughness part is obtained and the corresponding substantially profile of described inner surface profile when cooling with the described inner surface of described porous insert.

2. pipe assembly according to claim 1 also comprises being configured in use connect the cooling structure that enters thermal dissipating path.

3. pipe assembly according to claim 2, wherein said vacuum structure comprises the body that is used to hold described antipriming pipe, and at least one is configured in use the porous insert is connected to the vacuum passage of vacuum source.

4. pipe assembly according to claim 3, wherein said cooling structure comprise that at least one is located at the cooling duct on the described body.

5. injection molding machine comprises:

Molded structure, it is at least one working of plastics of molding in use; With

At least one porous cooling die cavity, it is configured in use keep and cool off this at least one working of plastics after described at least one working of plastics is by described molded structure molding; With

At least one vacuum passage, its relative configurations offers described at least one porous die cavity for the pressure that in use will be lower than environment, so that the described inner surface of this at least one porous die cavity of at least one working of plastics and this contacts.

6. injection molding machine according to claim 5, wherein each described cooling die cavity comprises the porous insert that is arranged in the body.

7. injection molding machine according to claim 6, wherein said cooling die cavity also comprises the cooling structure that is configured in use insert thermal dissipating path.

8. be used to hold the pipe assembly of the molded plastic part of moulding, this pipe assembly comprises:

Porous substrate with inner surface and outer surface, at least a portion of the profile reflection molded plastic part profile of this inner surface; With

Be positioned near the vacuum passage the outer surface, this vacuum passage is in use supported the initial formation from the described outer surface of described porous substrate to its described inner surface pressure reduction, in use to impel the molded plastic part that holds and the contact between the described inner surface.

9. pipe assembly according to claim 8, wherein this porous substrate is the insert that activity is positioned at pipe module body part.

10. one kind is used for the pipe assembly operated on the toughness molded plastic part, and this pipe assembly comprises:

Body; With

Be arranged in the porous insert of body, this porous insert comprises inner surface and outer surface, at least a portion of the profile reflection molded plastic part profile of this inner surface; With

The vacuum passage that at least one is communicated with described porous insert fluid, described vacuum passage is configured in use be connected with vacuum source, so that the pressure of reduction is provided near described inner surface, cause the toughness molded plastic part outer surface that is positioned at the pipe assembly to contact, thereby the essential part of toughness part outer surface is obtained and the corresponding substantially profile of described inner surface profile when cooling with described inner surface; With

Cooling structure, it is configured in use be connected with thermal dissipating path, so that cooling and the contacted molded plastic part of the described inner surface of porous insert.

11. pipe assembly according to claim 10, wherein the inner surface of porous insert comprises blind end, and it is configured as the dome portion corresponding to molded plastic part.

12. pipe assembly according to claim 11, also be included in its bottom passage, this passage in use is connected to vacuum or pump unit, so that with in the molded plastic part suction pipe assembly.

13. pipe assembly according to claim 12 also comprises connector, it matches with body, to form the blind end of body.

14. pipe assembly according to claim 10, wherein the porous insert is the heat conduction porous coating that is applied to inner surface of tube body.

15. pipe assembly according to claim 10, wherein the porous insert has the porosity that is about in the 3-20 micrometer range.

16. pipe assembly according to claim 10, wherein interior porous insert is made by porous aluminum.

17. pipe assembly according to claim 10, wherein cooling structure is located at the cooling duct that is configured to transport cooling fluid in the body by at least one and forms,

18. pipe assembly according to claim 10, wherein cooling structure is by forming body thermal to radiator.

19. pipe assembly according to claim 10 also comprises the pad that is used at body location porous insert.

20. pipe assembly according to claim 10, wherein this at least one vacuum passage is located near the body of porous insert outer surface.

21. pipe assembly according to claim 10, wherein the porous insert comprises this at least one vacuum passage.

22. pipe assembly according to claim 21, wherein at least one vacuum passage provides as a plurality of passages on the porous insert outer surface.

23. pipe assembly according to claim 10 also comprises the end sealing of managing the assembly beginning, this end sealing in use helps to form the pressure that reduces near the inner surface of described porous insert.

24. pipe assembly according to claim 10 also comprises the collar on the body top, so that the porous insert is remained in the body.

25. pipe assembly according to claim 24, wherein the collar extends internally, to adapt to the inner surface of porous insert.

26. pipe assembly according to claim 24, wherein the collar also comprises lip packing.

27. the method for the toughness molded plastic part that is used to be shaped comprises step:

(i) molded plastic part is packed in the pipe assembly that comprises antipriming pipe;

The pressure of reduction (ii) is provided near the inner surface of described antipriming pipe moulding, contacts with it, thereby obtain corresponding substantially shape so that a part of outer surface of molded plastic part moves into; With

(iii) from molded plastic part, absorb heat, molded plastic part is cured to the degree that keeps external surface shape by thermal dissipating path; With

(iv) release moulded plastics articles;

Wherein, the outer surface of molded plastic part has the net shape that the inner surface profile by the antipriming pipe moulding limits.

28. method according to claim 27 keeps the step by antipriming pipe inner surface reduction pressure when also being included in the molded plastic part cooling.

29. comprising by the vacuum passage in the pipe assembly, method according to claim 27, the step of wherein releasing moulded plastics articles apply normal pressure.

30. an arm ending tool comprises:

Board, it in use is used for being filled to the manipulator of molding system; With

At least one is arranged in the pipe assembly on the described board, and each pipe assembly is configured in use hold molded plastic part;

Each described pipe assembly comprises:

Antipriming pipe with inner surface and outer surface, at least a portion profile of the profile reflection molded plastic part of this inner surface; With

31. arm ending tool according to claim 30, wherein said pipe assembly also comprises the cooling structure that is configured in use insert thermal dissipating path.

32. arm ending tool according to claim 31, wherein said vacuum structure comprise that the body that is used to hold described antipriming pipe and at least one are configured in use be connected to the vacuum passage of vacuum source.

33. arm ending tool according to claim 30, wherein the number of preform pipe assembly is corresponding to the molded plastic part number of making in each corresponding infusion cycles of molding system.

34. arm ending tool according to claim 30, wherein the number of preform pipe assembly is corresponding to the multiple of the molded plastic part number of making in each corresponding infusion cycles of molding system.

35. arm ending tool according to claim 30, wherein the porous insert has the porosity that is about in the 3-20 micrometer range.

36. arm ending tool according to claim 35, wherein interior porous insert is made by porous aluminum.

37. arm ending tool according to claim 31, wherein cooling structure by at least one be located at be configured in the body be located at board in the cooling duct that is connected of cooling channels form,

38. arm ending tool according to claim 31, wherein cooling structure forms by the radiator that at least one pipe component heat with this is bonded to by the board loading that cools off.

39. arm ending tool according to claim 32, wherein at least one vacuum passage be configured to be located at board in vacuum passage be connected.

40. a pipe assembly comprises:

Pipe, it has the suprabasil inner surface of the porous of being located at; With

Fluid flow structure, it is configured to match with described porous substrate, contact so that the toughness molded plastic part that is positioned at the pipe assembly is inhaled into described inner surface, thereby the essential part of toughness part outer surface is obtained and the corresponding substantially exterior contour of described inner surface profile when cooling.

41. a molded plastic part, the shape of its at least a portion outer surface is limited by the moulding inner surface of antipriming pipe, and this molded plastic part is shaped by following method:

(i) the toughness molded plastic part is packed in the antipriming pipe;

Reduction pressure (ii) is provided near the inner surface of described antipriming pipe moulding so that the outer surface part of molded plastic part moves into and to contact with the moulding inner surface of antipriming pipe, thereby acquisition basically with the corresponding shape of moulding inner surface; With

(iii) from molded plastic part, absorb heat,, keep the outer shape of molded plastic part like this so that molded plastic part is fully solidified by thermal dissipating path;

The outer surface part of molded plastic part presents the surface smoothness of reflection porous insert moulding inner surface thus.

42. according to the described molded plastic part of claim 41, wherein antipriming pipe is formed by the porous substrate with moulding inner surface, this moulding inner surface has the gap that preferably is about in the 3-20 micrometer range.

43. according to the described molded plastic part of claim 41, wherein molded plastic part is a preform.

44. the cooling tube device of an injection moulded plastic article comprises:

Extruded tube, it has inner surface and outer surface; With

The cooling duct that at least one extruding produces.

45. according to the described device of claim 44, wherein said cooling duct is arranged between described inner surface and the described outer surface.

46. according to the described device of claim 44, also comprise sleeve pipe, it matches with described pipe, to seal described cooling duct, described pipe is arranged in described inside pipe casing and is adjacent, and wherein said cooling duct be arranged in following both one of on:

(i) the described outer surface of described pipe;

The (ii) inner surface of described sleeve pipe.

47. according to the described device of claim 45, wherein said cooling duct has constant substantially profile, it is along described pipe longitudinal extension.

48. according to the described device of claim 47, wherein said cooling duct has the length at least about the minor diameter that is four times in the described cooling duct of described pipe.

49. according to the described device of claim 48, wherein said pipe has and comprises a plurality of cross sections as cooling duct as described in the arc elongated slot.

50. according to the described device of claim 49, wherein the cumulative angle amount of all elongated slots is greater than 180 degree.

51. according to the described device of claim 48, wherein said elongated slot combines, to form at least one cooling circuit around described pipe.

52. according to the described device of claim 44, wherein said pipe comprises metal that can be squeezed.

53. according to the described device of claim 52, wherein said pipe comprises extruded aluminium.

54. according to the described device of claim 44, also comprise connector, it is arranged in the far-end of described pipe, and is configured to contact with the far-end of injection moulded plastic article.

55. according to the described device of claim 54, wherein said connector comprises aluminium, and comprise cooling duct import, cooling duct outlet and at least one pressure channel, each in the import of described cooling duct, the outlet of described cooling duct and the described pressure channel is configured to be connected with corresponding plate cooling duct import, cooling duct outlet and the pressure channel of taking out.

56. according to the described device of claim 54, wherein said connector has the cheese inner surface that is configured to contact and cool off the corresponding cheese of injection moulded plastic article end in the described cooling tube.

57., also comprise the injection moulded plastic article hermetically-sealed construction that is arranged in described cooling tube far-end according to the described device of claim 44.

58., also comprise porous insert with at least one pressure channel and shaping inner surface according to the described device of claim 44.

59. an injection molding machine comprises:

The molded structure of a plurality of working of plastics of molding;

The cooling frame cavity configuration of a plurality of extruding, it is configured to keep after a plurality of working of plastics are by described molded structure molding and these a plurality of working of plastics of cooling, each described cooling frame cavity configuration has inner surface, outer surface and at least one cooling duct by the extruding generation, and keep cooling medium to flow, so that when described part is kept by a plurality of extruding cooling frame cavity configurations, from a plurality of working of plastics, absorb heat.

60. according to the described injection molding machine of claim 59, wherein said at least one cooling duct is arranged between described inner surface and the described outer surface.

61. according to the described injection molding machine of claim 59, also comprise sleeve pipe, it matches with described cooling frame cavity configuration, to seal described cooling duct, described cooling frame cavity configuration is arranged in described inside pipe casing and is adjacent, and wherein said cooling duct be arranged in following both one of on:

(i) the described outer surface of described cooling frame cavity configuration;

The (ii) inner surface of described sleeve pipe.

62. according to the described injection molding machine of claim 60, wherein said at least one cooling duct has constant substantially profile, it is along each corresponding described cooling frame cavity configuration longitudinal extension.

63. according to the described injection molding machine of claim 62, wherein said at least one cooling duct has the length at least about the minor diameter that is four times in described at least one cooling duct.

64. according to the described injection molding machine of claim 63, wherein each described cooling frame cavity configuration has the cross section of the cooling duct that comprises a plurality of as arc elongated slot.

65. according to the described injection molding machine of claim 64, wherein the cumulative angle amount of all elongated slots is greater than 180 degree.

66. according to the described injection molding machine of claim 63, wherein said elongated slot combines, to form at least one cooling circuit around each described cooling frame cavity configuration.

67. according to the described injection molding machine of claim 59, wherein said cooling frame cavity configuration comprises metal that can be squeezed.

68. according to the described injection molding machine of claim 67, wherein said cooling frame cavity configuration comprises extruded aluminium.

69. according to the described injection molding machine of claim 59, also comprise connector, it is arranged in the far-end of each described cooling frame cavity configuration, and is configured to contact with the far-end of injection moulded plastic article.

70. according to the described injection molding machine of claim 69, wherein said connector comprises aluminium, and comprise cooling duct import, cooling duct outlet and at least one pressure channel, each in the import of described cooling duct, the outlet of described cooling duct and the described pressure channel is configured to be communicated with corresponding plate cooling duct import, cooling duct outlet and the pressure channel of taking out.

71. according to the described injection molding machine of claim 69, wherein said connector has the cheese inner surface that is configured to contact and cool off injection moulded plastic article respective shapes end in each described cooling frame cavity configuration.

72., also comprise porous insert with at least one pressure channel and shaping inner surface according to the described injection molding machine of claim 69.

73., also comprise the injection moulded plastic article hermetically-sealed construction that is arranged in each described cooling frame cavity configuration far-end according to the described injection molding machine of claim 59.

74. the method for the injection moulded plastic article cooling tube that is used to be shaped comprises step:

Extruding has the hollow aluminum pipe of inner surface and outer surface and at least one cooling duct.

75. according to the described method of claim 74, the described step of wherein pushing described pipe is included in described at least one passage of extruding between described inner surface and the described outer surface.

76. according to the described method of claim 74, the described step of wherein pushing described pipe comprises described at least one passage that pushes on the described outer surface that is arranged in described pipe.

77. according to the described method of claim 74, wherein said pressing steps is carried out with aluminium.

78. according to the described method of claim 74, the step of wherein pushing described pipe comprises the step of pushing described at least one passage, make the cross section of cooling tube comprise a plurality of as basic around as described in the arc elongated slot of internal diameter as described in the cooling duct.

79. according to the described method of claim 74, wherein said at least one passage comprises a plurality of cooling ducts, and is included in machining interface channel configuration between the described cooling duct to finish the step around described cooling tube cooling circuit.

80. according to the described method of claim 79, also comprise the step that forms central plug, this central plug comprises cooling channels and at least one air vacuum passage.

81. 0 described method also comprises the step that described connector is placed described hollow tube one end according to Claim 8, to form the blind end of cooling tube.

82. 0 described method also comprises the step that forms the porous insert with at least one pressure channel and shaping inner surface according to Claim 8.

83. 2 described methods according to Claim 8 also comprise and described porous insert are inserted described hollow tube and by inserting described connector described insert remained on step in the described pipe.

84. 2 described methods according to Claim 8, wherein said porous insert is by the technology manufacturing that comprises extruding.

85. a cooling tube device that is used for vacuum forming injection molded plastic preform comprises:

Pipe, it comprises the insert hole that is used to hold the porous insert, plug hole that at least one is used to hold and keep central plug, be formed at the cooling groove on the tube outer surface and be used to hold the groove of end sealing at its beginning, and this end sealing in use is used to seal the part of described preform in the described pipe and form enclosed volume thus between described preform and described pipe; With

Sleeve pipe, it is engaged in the described external surface peripheral of described pipe and is sealed to the there, to seal described groove;

Central plug, it comprises the shaping inner surface that corresponds essentially to described preform dome portion, be used for the import that is connected with the described groove of described pipe with the outlet coolant guiding channel, help to hold and the pressure channel of releasing described preform and the vacuum passage that is connected the circular passage, this circular passage is formed between the described plug hole of narrowed portion on the described connector and described pipe; With

The porous insert, it comprises that profile corresponds essentially to the inner surface of the finally predetermined molded surface of preform, outer surface and at least one connects the longitudinal pressure passage of described circular passage;

Thereby in use, pressure channel is provided with conduit for bleeding by the porous insert, contacts with described moulding inner surface so that will be out of shape the preform suction, and vacuum forms described preform thus.

86. 5 described cooling tubes according to Claim 8, wherein said pipe, described porous insert, described connector and described sleeve pipe are all preferably made by the metal of height thermal conductance.

87. 6 described cooling tubes according to Claim 8, wherein said porous insert is preferably made by the porous material that porosity is about in the 3-20 micrometer range.

88. 7 described cooling tubes according to Claim 8, wherein said porous insert material is a porous aluminum.