CN101175624A - Coolant system for inject cores - Google Patents

Coolant system for inject cores Download PDF

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Publication number
CN101175624A
CN101175624A CNA2006800163318A CN200680016331A CN101175624A CN 101175624 A CN101175624 A CN 101175624A CN A2006800163318 A CNA2006800163318 A CN A2006800163318A CN 200680016331 A CN200680016331 A CN 200680016331A CN 101175624 A CN101175624 A CN 101175624A
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CN
China
Prior art keywords
coolant feed
baffle
heat
cooling medium
feed pipes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2006800163318A
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Chinese (zh)
Inventor
A·布朗
S·沙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Graham Packaging Co LP
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Graham Packaging Co LP
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Filing date
Publication date
Application filed by Graham Packaging Co LP filed Critical Graham Packaging Co LP
Publication of CN101175624A publication Critical patent/CN101175624A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7331—Heat transfer elements, e.g. heat pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C45/7312—Construction of heating or cooling fluid flow channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
    • B29C2033/042—Meander or zig-zag shaped cooling channels, i.e. continuous cooling channels whereby a plurality of cooling channel sections are oriented in a substantial parallel direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B29C2045/7362—Heating or cooling of the mould turbulent flow of heating or cooling fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Abstract

A coolant system uses a heat pipe and a coolant feed pipe within a coolant chamber to cool an inject core.

Description

The cooling system of inject cores
Technical field
The present invention relates to the cooling system of inject cores, it can be used as an assembly of molding system.More particularly, the present invention relates to utilize heat pipe, cooling feed pipe and cooling chamber in the inject cores to cool off inject cores.
Background technology
The molding system can be by with pattern-making material, the plastics of fusion for example, and as the thermoplastic of fusion, pressurization is injected into and forms part in the mold.Concave articles can form by inject pattern-making material around inject cores.For example; preformed member in the blow molding operation can pass through thermoplastic; PETG (PET) for example; be injected in cylindrical mold, avette mold or the oval mold by cast gate, cylindrical, avette or oval inject cores is positioned at cylindrical mold, avette mold or oval mold.Thermoplastic can flow out between cast gate and inject cores and oval or the avette mold.After the injection, near the zone of thermoplastic cast gate is in maximum temperature.After thermoplastic was injected into, the product of preformed member was opened mold then and just can be finished by heat of cooling thermoplastic plastic.
The characteristic of moldings depends on the cooldown rate of material in the mold.For example, the degree of crystallinity of the moldings of the cooldown rate of plastics influence cooling.The degree of crystallinity influence, for example, the rigidity of moldings.In working of plastics preformed, whether degree of crystallinity has influence on preformed member suitable when second step was blown in the container.For minimum crystallinity, plastics need be quickly cooled to its following temperature of glass transition point.
Pattern-making material, the plastics of fusion for example, cooldown rate in mold, control by the cooling mold.For example, mold comprises the passage that flows through cooling medium, for example water, air, perhaps other fluid that can flow.Heat is delivered to mold from pattern-making material, is delivered to cooling medium from mold again, and cooling medium is delivered to the external world with heat then.Cooling medium is realized circulation by inject cores, and heat just can spread out of from pattern-making material fast like this.The temperature of rate of heat transfer and mold can be controlled, for example by the circulation rate of control cooling medium by mold or inject cores, perhaps changes technological parameter, for example the temperature of the temperature of cooling medium or pattern-making material.
Heat pipe can be used to replace or increases cooling medium flowing heat is shed from mold or inject cores.Basic heat pipe comprises the solid with hollow inside, metallic walls for example, and hollow inside is to seal to external world.Hollow inside can hold working fluid, its vaporization in the zone that heat is distributed, and in the zone that heat is transferred, condense.For example, heat pipe holds but not exclusively fills up working fluid, water for example, hollow conduit, hollow steel tube for example.The outer surface of heat pipe one end contacts with a thermal medium; Working fluid is vaporization near this end.The working fluid of vaporization flows through in the inside of heat pipe then.The outer surface of the heat pipe other end contacts with a cold media; The working fluid of vaporization condenses near this end.The working fluid that condenses flow back into an end that contacts with thermal medium of heat pipe, and such circulation can repeat.Under the situation of not pumping with required other processing of working fluid or maintenance, the convection current of working fluid makes heat pipe have very high overall heat-transfer coefficient in the heat pipe.Heat pipe can be brought in the equipment design fast, also can be finalized or place to dispel the heat in special area.
Yet the rate of heat transfer of heat pipe is controlled easily unlike the rate of heat transfer of circulating cooling medium.The cycling rate that reduces cooling medium generally can reduce rate of heat transfer, and the temperature that improves the cooling medium that injects generally can reduce rate of heat transfer.When using heat pipe, the convection velocity of working fluid can not directly be controlled; The rate of heat transfer of heat medium can be controlled, and for example, the temperature of the cold medium of the end by the control heat pipe relative with heat medium is perhaps by controlling the temperature of heat medium.
Comprised any in the passage of circulating cooling medium or the heat pipe for the Cooling System Design of inject cores in the past, but be not that the both comprises.Have the circulating cooling medium passage, but do not comprise heat pipe, design be subject to passage from the special area heat dissipation capability.For example, near the zone of the preformed member cast gate.Have heat pipe, but do not comprise the circulating cooling medium passage, design be subject to the ACTIVE CONTROL ability of heat pipe rate of heat dispation, with the adjustment capability of rate of heat dispation in the zone different around inject cores.For example, the design that only has the center heat pipe can not obtain higher rate of heat dispation by adjustment, more precisely, and the preferential heat radiation in the specific region around the inject cores.If single central heat pipe direction departs from, the rate of heat dispation in each zone is different around the inject cores so, and single heat pipe can not be by rapid adjustment.
Therefore, need provide a kind of rate of heat dispation faster, and be that controllable mode comes to cool off fast, uniformly pattern-making material, to form moldings, for example preformed member for inject cores.
Summary of the invention
Therefore an object of the present invention is to provide a kind of novel inject cores cooling system, the cooling pattern-making material that it can be quick and controlled.
Description of drawings
Figure 1A is the vertical view of the inject cores cooling system of the specific embodiment of the invention.
Figure 1B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 2 A is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 2 B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 3 A is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 3 B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 4 A is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 4 B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 5 A is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 5 B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 6 A is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 6 B is the side view of the inject cores cooling system of specific embodiments of the invention.
Fig. 7 A is the side view of the inject cores cooling system of specific embodiments of the invention, and some feature is hidden.
Fig. 7 B is the cutaway side sectional view of the inject cores cooling system of specific embodiments of the invention.
Fig. 8 is the perspective view of a baffle groups of specific embodiments of the invention.
The specific embodiment
Below, specific embodiments of the invention are described.In the described specific embodiment, specific term is clear and definite in order to explain.Yet the present invention is not limited to selected specific term.Those skilled in the art can discern other part that is equal to therewith and other method without departing from the spirit or scope of the invention.With reference to every piece of list of references, all lists of references cited herein can be combined as a reference just as independent.
A specific embodiment of the cooling system of inject cores comprises following part, shown in Figure 1B.Inject cores 1 hollow, inside has cooling chamber 4.Inject core wall 2 separates the cooling chamber 4 and the external world in the inject cores 1.Inject cores 1 has inner bottom surface 6 and inner circumferential surface 8, and it defines cooling chamber 4.Coolant feed pipes 10 extend in the cooling chamber 4 from the outside of cooling chamber.Coolant feed pipes 10 has coolant feed pipe inlet 12 and cooling medium discharging opening 14, and cooling medium discharging opening 14 is installed in the cooling chamber 4, and coolant feed pipe inlet 12 is installed in outside the cooling chamber 4.Coolant feed pipe inlet 12 can be connected to cooling medium source of supply 28 by hydrodynamic coupling.Hydrodynamic coupling comprises the direct connection of two assemblies, and fluid can flow between them like this.Hydrodynamic coupling comprises that also fluid flows through first and second assemblies by the 3rd assembly like this by the direct connection of two elements of the 3rd assembly.Heat pipe 18 has first end 20; First end 20 of heat pipe 18 is positioned at cooling chamber 4.Heat pipe 18 has second end 22; Second end 22 is positioned at heat dissipation channel 24.Heat dissipation channel 24 can be connected to heat radiation cooling medium source of supply 26 by hydrodynamic coupling.First end 20 of heat pipe 18 is adjacent with inner bottom surface 6.Adjacent being meant closely for example, is enough to make heat to pass to heat pipe 18 from inner bottom surface 6.The vertical view of the inject cores 1 shown in Figure 1B is shown in Figure 1A.
For example, Re pattern-making material flows into from the cast gate on the inject core wall 2 part opposites that are positioned at inject cores 1 opposite and inner bottom surface 6 and limit.Heat is delivered to heat pipe 18 by inner bottom surface 6 and cooling medium on every side.Heat upwards arrives heat dissipation channel 24 through heat pipe.Second end of heat pipe 18 is cooled in heat dissipation channel 24 by the cooling medium that heat radiation cooling medium source of supply 26 provides.Heat pipe 18 is beneficial to heat from inject core wall 2 like this, and the hot-zone of adjacent inner bottom surface 6 sheds fast.The cooling medium that cooling medium source of supply 28 provides flows to inner bottom surface 6 by coolant feed pipes 10.Heat is delivered to the cooling medium that flows out from coolant feed pipes 10 from inner bottom surface 6 then.Flow through inner peripheral surface 8 of cooling medium arrives cooling chambers outlet 16.When cooling medium flow through, heat was delivered to heat pipe 18 from cooling medium.Outside cooling chamber outlet 16, cooling medium is cooled off and is recycled to cooling medium source of supply 28.Can reduce the temperature of cooling medium and/or the circulation rate of raising cooling medium and satisfy higher refrigeration requirement, for example, when pattern-making material injects with higher temperature.Further, can improve the temperature of cooling medium and/or the circulation rate of reduction cooling medium and adapt to lower refrigeration requirement, for example, when pattern-making material injects with lower temperature.Cooling medium source of supply 28 provides and flows through the cooling medium of cooling chamber 4, and providing with heat radiation cooling medium source of supply 26 and be used for the cooling medium of second end 22 of heat of cooling conduit 18 can be identical.Cooling chamber outlet 16 allows cooling medium to flow into heat dissipation channel 24, and the cooling medium that flows out from heat dissipation channel 24 can cool off and be recycled to heat radiation cooling medium source of supply 26 and cooling medium source of supply 28 again.
Coolant feed pipes 10 can be listed as into the approximate conllinear of the longitudinal axis of its longitudinal axis and inject cores 1.Coolant feed pipes outlet 14 be positioned at inner bottom surface 6 near, cooling medium can flow out at a high speed like this.The flow velocity of cooling medium can be set up, and the cooling medium that flows out coolant feed pipes outlet 14 like this is a turbulent flow.
Heat pipe 18 is adjacent with coolant feed pipes 10, shown in the cross section of the longitudinal axis that comprises inject cores among the cross section vertical with longitudinal axis inject cores among Fig. 2 A and Fig. 2 B.Adjacently be meant that heat pipe 18 and coolant feed pipes 10 are closely.For example, be enough to make heat from coolant feed pipes 10 and 18 transmission of heat pipe.Heat pipe 18 and coolant feed pipes 10 adjacent making, for example, heat pipe 18 also can it the middle part and be not only that second end 22 is cooled.When heat pipe 18 adjacent with coolant feed pipes 10, the approximate conllinear of the longitudinal axis of the longitudinal axis of coolant feed pipes 10 and inject cores like this, heat pipe 18 transmits the heat of the pattern-making material near the zone of the preformed member the cast gate fast.When heat pipe 18 and coolant feed pipes 10 are adjacent, heat pipe 18 can interrupt coolant feed pipes and export flowing of 14 cooling mediums of discharging, the unaltered type of flow of cooling medium than coolant feed pipes outlet 14 discharges, realize a kind of better heat transfer form, for example, better from the inner bottom surface 6 of inject cores 1, conduct heat.
Heat pipe 18 can be adjacent with inner peripheral surface 8, shown in the cross section of the vertical cross section of the longitudinal axis with inject cores 1 among Fig. 3 A and the longitudinal axis that comprises inject cores 1 among Fig. 3 B.Adjacently be meant that heat pipe 18 and inner peripheral surface 8 are closely, for example, be enough to make heat to transmit to heat pipe 18 from inner peripheral surface 8.For example, heat pipe 18 can be distributed on the inner peripheral surface 8 and transmit heat with preferential specific region from inject core wall 2.For example, inject cores 1 is oval in the cross section of the longitudinal axis perpendicular to it.For the part flash heat transfer of inject core wall 2 at the main shaft extreme value place of elliptic cross-section, this is very important.For realizing cooling fast at these extreme value places, near heat pipe 18 clusters adjacent these extreme values with inject core wall 2.
Heat pipe 18 also can be all adjacent with coolant feed pipes 10 and inner peripheral surface 8.For example, the diameter of heat pipe 18 and/or coolant feed pipes 10 can be enough big, and heat pipe 18 contacts with inner peripheral surface 8 with coolant feed pipes 10 simultaneously like this.Cooling system comprises a coolant feed pipes 10 or a plurality of coolant feed pipes 10, and comprises a heat pipe 18 or a plurality of heat pipe 18.
Heat pipe 18 is adjacent with coolant feed pipes 10.Heat pipe 18 is an annular cylinder.Also promptly, heat pipe 18 has the form of the hollow ring of elongation, and fluid can freely pass through the ring center.For example, coolant feed pipes 10 is positioned near the cooling chamber of the longitudinal axis of inject cores 1, and annular cylinder heat pipe 18 surrounds coolant feed pipes 10.Annular cylinder heat pipe 18 is adjacent with inner peripheral surface 8, shown in Fig. 4 A and 4B.
Coolant feed pipes 10 is adjacent with inner peripheral surface 8.Adjacently be meant that coolant feed pipes 10 and inner peripheral surface 8 are closely, for example, be enough to make heat to transmit to coolant feed pipes 10 from inner peripheral surface 8.
Coolant feed pipes 10 is adjacent with heat pipe 18.Coolant feed pipes 10 is an annular cylinder.Also promptly, coolant feed pipes 10 has the form of the hollow ring of elongation, and fluid can freely pass through the ring center.For example, heat pipe 18 is positioned near the cooling chamber of the longitudinal axis of inject cores 1, and annular cylinder coolant feed pipe 10 is surrounded heat pipes 18.Annular cylinder coolant feed pipe 10 is adjacent with inner peripheral surface 8, shown in Fig. 5 A and 5B.
Cooling system also comprises coolant feed pipe valve.Coolant feed pipes inlet 12 can be connected to coolant feed pipe valve by fluid power.Coolant feed pipe valve is connected to cooling medium source of supply 28 by hydrodynamic coupling.Also promptly, cooling medium source of supply 28 provides cooling medium to coolant feed pipe valve, if coolant feed pipe valve is opened, provides cooling medium to coolant feed pipes inlet 12.Cooling system comprises a plurality of coolant feed pipes 10 and a plurality of coolant feed pipe valve.A plurality of coolant feed pipes inlet 12 is connected to single coolant feed pipe valve by fluid power.For example, several coolant feed pipes inlets 12 can be connected to first coolant feed pipe valve by fluid power, and other several coolant feed pipes inlets 12 can be connected to second coolant feed pipe valve by fluid power, and the rest may be inferred.The break-make of the valve by adjusting mutual correspondence can provide cooling medium flow velocity faster to some coolant feed pipes 10 with respect to other coolant feed pipes 10.Under this mode, the specific region in the cooling chamber 4 or can preferentially obtain cooling along the specific region of inject core wall 2.
For example, a plurality of coolant feed pipes 10 can be that the inner peripheral surface 8 of oval inject cores 1 is adjacent with the cross section perpendicular to inject cores 1 longitudinal axis.Fluid power is connected near the coolant feed pipe valve of the coolant feed pipes 10 the major axis extreme value of oval cross section and can adjusts, and it is faster to make that the velocity ratio of cooling medium of these coolant feed pipes 10 is positioned at the flow velocity of cooling medium of coolant feed pipes 10 at minor axis extreme value place of oval cross section.Like this, near the inject core wall zone of major axis extreme value that is positioned at oval cross section can preferentially be cooled off.In addition, coolant feed pipe valve can be adjusted to the next one from an injection molding operation, even adjusts in single injection molding operation.For example, after a plurality of injection molding operating process, inject cores 1 direction departs from, and is narrower than the stream along opposite one side of inject cores 1 along the stream of the pattern-making material on one side of inject cores 1 like this.The difference in thickness of the areas at both sides of He Cheng mold container or preformed member is not a problem at itself like this.Yet, be actually that can not to accept the thicker zone cooling of thinner region faster, and cause the two-part material behavior of wall different.Optimize to recalibrate inject cores 1 by the dismounting pattern making equipment, the cost costliness is very time-consuming again like this, and need stop pattern making equipment, and adopts the adjustment coolant feed pipe valve to optimize more.Valve can be adjusted, and cooling medium is slow at the flow velocity than near the cooling feed pipe 10 near the wider passages zone of velocity ratio cooling medium at pattern-making material of the cooling feed pipe 10 the narrow passage zone of pattern-making material like this.Like this, coolant feed pipe valve can be adjusted the even velocity of flow with the maintenance pattern-making material, and need not consider the dislocation of inject cores 1.
In the specific embodiment shown in Fig. 6 A and 6B, all inner peripheral surfaces 8 of the longitudinal extent correspondence of coolant feed pipes 10 are all directly adjacent with coolant feed pipes 10.For example, on the zone of inner peripheral surface 8, coolant feed pipes 10 is downward towards inner bottom surface 6, but is not in contact with it, and all inner peripheral surfaces 8 directly contact with coolant feed pipes 10.Coolant feed pipes 10 can be, for example, cross section is oval, kidney shape, and perhaps arc form is with consistent with inner peripheral surface 8, as shown in Figure 6A.Each coolant feed pipes 10 can be connected to different coolant feed pipe valve.Coolant feed pipe valve can independently be adjusted every section rate of heat dispation with the adjacent inject cores 2 of control and coolant feed pipes 10.Like this, the specific embodiment of the cooling system that provides has here considered that not only the temperature of the cooling medium that provides by the flow of adjusting cooling medium stream and cooling medium source of supply 28 controls total rate of heat dispation, and has considered to come the rate of heat dispation of the zones of different of inject core wall 2 is carried out independent adjustment by adjusting coolant feed pipe valve.
Heat pipe 18 and coolant feed pipes 10 can be any in a plurality of shapes.For example, heat pipe 18 or coolant feed pipes 10 can be circle, ellipse, square, triangle, polygon perpendicular to the cross section of the longitudinal axis, or any other shape.Further, heat pipe 18 or coolant feed pipes 10 can be identical and constant along the cross section of the longitudinal axis, can be tapers along the longitudinal axis, can be corrugated, perhaps can have various cross section along the longitudinal axis.
Cooling system comprises the baffle groups 72 in the cooling chamber 4, and the flowing of the cooling medium in its guiding cooling chamber 4 is shown in Fig. 7 A and 7B.This baffle groups 72 can comprise 1 or more a plurality of baffle plate 74; For example, this baffle groups 72 shown in Fig. 7 A and the 7B has two baffle plates, 74a and 74b.Baffle plate 74 guided flow and improve between inject core wall 2 and cooling medium, and the rate of heat dispation of 18 of inject core wall 2 and heat pipes.Rate of heat transfer can be used, for example, the joule number that per second transmits to cooling medium from inject core wall 2, or per second shows to the joule numerical table that heat pipe 18 transmits from inject core wall 2.The cooling medium that baffle plate 74 can stop coolant feed pipes outlet 14 to be discharged upwards flows near the longitudinal axis of inject cores 1 at once, and can not and obtain heat near inner peripheral surface 8.For example, baffle plate 74 can increase the average path length of the stream of 14 of cooling chamber outlet 16 and coolant feed pipes outlets.For example, the annularly flow in perpendicular to the plane of the longitudinal axis of inject cores 1 of baffle plate 74 bootable cooling mediums is shown in Fig. 7 A and 7B.
In one group of deflection plate 72 with two or more baffle plates 74, be called the first end plate 74b apart from inner bottom surface 6 nearest baffle plates, be called the second end plate 74a apart from inner bottom surface 6 baffle plate farthest.A pair of baffle plate, for example, the first end plate 74b shown in Fig. 7 A and 7B and the second end plate 74a can be separated by baffle walls 76, but contact with baffle walls, and/or be connected by baffle walls 76.Fig. 7 A has shown the vertical view of the second end plate 74a, and has shown characteristic below the second end plate 74a with dotted line.For example, in the adjacent solid line semicircular ring of the outer through holes 78a of the second end plate 74a and inject core wall 2, shown in the latter half of Fig. 7 A.In the adjacent dotted line semicircular ring of the outer through holes 78b of lower shoe 74b and inject core wall 2, shown in the left part of Fig. 7 A.Outer through holes 78a and 78b are positioned at the periphery of plate 74a and 74b, and shown in Fig. 7 A, perhaps outer through holes 78a and 78b are positioned at other parts of plate 74a and 74b.Coolant feed pipes 10 runs through the central through hole of the second end plate 74a and the first end plate 74b.Heat pipe 18 runs through the interstitial hole of the second end plate 74a and the first end plate 74b.Alternative, heat pipe 18 runs through central through hole, and is empty in the middle of coolant feed pipes 10 runs through.Separately and the baffle walls 76 that contacts with the first end plate 74b with the second end plate 74a shown in two dotted lines that the coolant feed pipes 10 from the center of Fig. 7 A lower left quarter reaches inject core wall 2.Cooling medium flows out from coolant feed pipes outlet 14, through inner bottom surface 6 and upwards by the outer through holes 78b among the first end plate 74b, shown in Fig. 7 B.Cooling medium is blocked in the counterclockwise direction by baffle walls 76, but can flow along clockwise direction, shown in the semicircle arrow among Fig. 7 A.Cooling medium upwards flows by the outer through holes 78a in second end plate then, and continues upwards to flow in cooling chamber 4.
Baffle plate 74 is adjacent with inner peripheral surface 8.Adjacently be meant that baffle plate 74 and inner peripheral surface 8 are closely, for example, be enough to make heat to flow to baffle plate 74, and/or enough closely make cooling medium to flow, and can not in the gap between baffle plate 74 and the inner peripheral surface 8, flow by outer through holes 78 from inner peripheral surface 8.
This baffle groups 72 can be made up of plural baffle plate 74, and each baffle plate has one or more outer through holes 78, the every pair of baffle plate by one or more baffle walls 76 separately but with the baffle walls contact and/or be connected.To continuous baffle plate, baffle walls 76 can be positioned at the different angular coordinate θ with the vertical plane of the longitudinal axis of inject cores 1 for each.The staggered of baffle walls 76 can be guaranteed any one zone that the cooling medium low-speed flow is crossed, and can all not be positioned at a ribbon area of extending single angular coordinate along the y direction of the adjacent inject cores 1 of inject core wall 2.
Baffle plate 74 can be orientated the approximate longitudinal axis that is parallel to inject cores 1 of normal of each baffle plate 74.Alternative, baffle plate 74 can be oriented the normal angle that is not parallel to inject cores 1 longitudinal axis; Perhaps some baffle plate 74 can be orientated approximately parallel to the normal angle of inject cores 1 longitudinal axis, and other baffle plates 74 can be oriented the normal angle that is not parallel to inject cores 1 longitudinal axis.
When pattern-making material injects and flows through inject cores 1, inject cores 1 will be subjected to very large pressure reduction.If it is different with the pressure that is applied to inject cores 1 another side to be applied to inject cores 1 pressure on one side, inject cores 1 will be subjected to from its power of mold center curvature.Except that the flowing of guided, this baffle groups 72 can booster shots core 1 mechanical strength, overcomes this bending force or other make the external force of inject cores 1 distortion.The mechanical consolidation that is provided by a baffle groups 72 can make inject cores 1 have thinner inject core wall 2, uses still less material so that inject cores 2 is lighter, more cheap, makes the heat transfer coefficient of the hot-fluid by inject core wall 2 bigger.Alternative, the thickness of inject core wall 2 can be kept constant, but inject cores 1 can stand bigger pressure differential.
In specific embodiment, a baffle groups 72 has two or more baffle plates 74, and each baffle plate has an outer through holes 78 at least, and each baffle plate 74 is connected by at least one baffle walls 76 with another baffle plate 74.Baffle plate 74 can be circular or oval, or other Any shape.Because baffle plate 74 can be connected to each other by one or more baffle walls 76, this baffle groups 72 can be single rigid device.Fig. 8 has shown the perspective view of a baffle groups 72.This baffle groups 72 has the first end plate 74b and the second end plate 74a.When this baffle groups 72 was placed in the container, for example in the inject cores 1, each baffle plate 74 is adjacent with chamber wall, and was for example, adjacent with the inner peripheral surface 8 of inject core wall 2.Adjacently be meant that each baffle plate 74 and chamber wall are closely, for example, be enough to make heat to flow to baffle plate 74, and/or be enough to make cooling medium to flow through, and can not flow through by the gap between baffle plate 74 and chamber wall from outer through holes 78 from chamber wall.Yet baffle plate 74 does not need to be permanently connected on the chamber wall.For example, can form sliding joining between baffle plate 74 and chamber wall; This baffle groups 72 is taken out from container then, for example, and for cleaning.Container can be, for example inject cores 1, and chamber wall can be the inject core wall 2 with inner peripheral surface 8.When this baffle groups 72 was put in the container, for example inject cores 1, by this baffle groups 72, can form fluid, cooling medium for example, continuous passage.For example, liquid is from first end plate 74b one side opposite with other baffle plates, by the outer through holes of the first end plate 74b, by the outer through holes 78 of other baffle plates 74, the outer through holes by the second end plate 74a arrives second end plate 74a one side opposite with other baffle plates at last successively.
Baffle plate 74 can have a central through hole.Central through hole can hold pipeline.For example, pipeline, for example coolant feed pipes 10 or heat pipe 18, can be suitable pass through central through hole.When from central through hole insertion pipeline, pipeline is adjacent with baffle plate 74.Adjacently be meant that pipeline and baffle plate 74 are closely, for example, be enough to make heat, and/or be enough to make cooling medium not flow through in the gap of 74 on pipeline and baffle plate in pipeline and 74 transmission of baffle plate.Yet baffle plate 74 does not need to be permanently connected on the pipeline.For example, can form sliding joining between the central through hole of pipeline and baffle plate 74.
This baffle groups 72 has inner cylinder 80.Inner cylinder 80 is hollow, and the heart has central through hole therein, pipeline like this, for example, coolant feed pipes 10 or heat pipe 18, can be suitable pass through central through hole.
One or more baffle plates 74 can be made up of high thermal conductivity alloy.For example, the first end plate 74b and/or the second end plate 74a can be made up of high thermal conductivity alloy.For example, when this baffle groups 72 is put in the inject cores 1, it is made up of more high thermal conductivity alloy than distance inner bottom surface 6 nearest end plates and has superiority, because when the cast gate of injection molding machine was relative with the part of the inject core wall 2 that defines inner bottom surface 6, this end plate can be one the hottest in the baffle plate 74.It also than, for example, near this end plate, have the baffle plate 74 that one or more baffle plate high thermal conductivity alloys form and have advantage.All baffle plates 74 all can be made up of high thermal conductivity alloy.A kind of high for example copper alloy of temperature alloy of leading is as Moldstar 90.For example, the end plate 74b that forms by high thermal conductivity alloy shown in Figure 8, it be can't help baffle plate 74 that high thermal conductivity alloy forms with another and combines.Shown joint line 82 among the figure.
The method of cooling inject cores 1 comprises the bottom section of pressurization injection cooling medium to cooling chamber 4.Bottom section is limited by the inner bottom surface 6 of inject cores 1.Cooling medium flows into by cooling chamber 4, flows out cooling chamber 4 by cooling chamber outlet 16 again.Heat spreads out of from the inner bottom surface 6 of inject cores 1 with heat pipe 18.Cooling medium can be, for example, and the fluid of water, hydrocarbon ils, silicone oil, air or other suitable mold process conditions.
The heat radiation cooling medium can pressurize and be injected into heat dissipation channel 24.The heat radiation cooling medium can, for example, absorb the heat that the inner bottom surface 6 of the inject cores 1 with heat pipe 18 spreads out of.The heat radiation cooling medium can be, for example, the fluid of water, hydrocarbon ils, silicone oil, air or other suitable mold process conditions.The cooling medium of discharging cooling chamber 4 from cooling chamber outlet 16 can flow into heat dissipation channel 24.The cooling medium that flows out from cooling chamber 4 can be identical fluid with the heat radiation cooling medium.The cooling medium that flows out from cooling chamber 4 fluid identical with the use of heat radiation cooling medium can simplified cooling system design.
Cooling medium can pressurized injection inject cores 1 bottom section, for example,,, for example,, be turbulent flow in coolant feed pipes outlet 14 to satisfy the flow velocity of the cooling medium that coolant feed pipes 10 discharges by coolant feed pipes 10.
The specific embodiment of explanation and discussion is not only in order to instruct those skilled in the art to understand the best way that the present invention makes and uses in this specification.Any part of this specification can not be considered to limit scope of the present invention.All examples that provide are representative and nonrestrictive.According to above-mentioned instruction, those skilled in the art can revise or the above-mentioned specific embodiment of variation the present invention without departing from the invention.Therefore, can be understood as, in claim and its equivalent scope, embodiments of the present invention are not limited to the described content of specification.。

Claims (22)

1. the cooling system of an inject cores comprises:
Heat pipe;
Cooling chamber is positioned at inject cores inside;
Coolant feed pipes, but coolant feed pipes inlet and the outlet of the coolant feed pipes in cooling chamber that fluid power is connected to the cooling medium source of supply had;
This inject cores has inner bottom surface and inner peripheral surface;
This heat pipe has first end that is positioned at cooling chamber.
2. the system as claimed in claim 1 further comprises heat dissipation channel, and its fluid power is connected to heat radiation cooling medium source of supply, and wherein said heat pipe has second end that is positioned at heat dissipation channel.
3. the system as claimed in claim 1, wherein first end and the inner bottom surface of heat pipe are adjacent.
4. the system as claimed in claim 1, the wherein approximate conllinear of the longitudinal axis of the longitudinal axis of coolant feed pipes and inject cores.
5. the system as claimed in claim 1, wherein heat pipe and coolant feed pipes are adjacent.
6. the system as claimed in claim 1, wherein heat pipe and inner peripheral surface are adjacent.
7. the system as claimed in claim 1, heat pipe is an annular cylinder.
8. the system as claimed in claim 1, coolant feed pipes is an annular cylinder.
9. the system as claimed in claim 1, wherein coolant feed pipes and inner peripheral surface are adjacent.
10. the system as claimed in claim 1,
Further comprise coolant feed pipe valve,
Wherein coolant feed pipes inlet fluid power is connected in this coolant feed pipe valve, and
Wherein coolant feed pipe valve fluid power is connected in the cooling medium source of supply.
11. the system as claimed in claim 1,
Further comprise a plurality of coolant feed pipe valve and a plurality of coolant feed pipes,
Wherein the inlet fluid power of each coolant feed pipes is connected in a coolant feed pipe valve, and
Wherein each coolant feed pipe valve fluid power is connected in the cooling medium source of supply.
12. the system as claimed in claim 1 is wherein adjacent with coolant feed pipes with the corresponding whole inner peripheral surface of the longitudinal extent of coolant feed pipes.
13. the system as claimed in claim 1 further comprises the baffle groups in the cooling chamber, the flow direction that is used for guided is to improve between inject core wall and the cooling medium and the rate of heat transfer between inject core wall and the heat pipe.
14. system as claimed in claim 13,
Wherein this baffle groups comprises two baffle plates at least,
Wherein a pair of baffle plate separately and with baffle walls is contacted by at least one baffle walls, and wherein at least two baffle plates are adjacent with inner peripheral surface.
15. system as claimed in claim 13,
Wherein this baffle groups comprises a baffle plate at least,
Wherein at least one baffle plate has at least one outer through holes.
16. system as claimed in claim 13,
Wherein this baffle groups comprises a baffle plate at least,
Wherein each baffle plate has central through hole,
One of them of heat pipe and coolant feed pipes inserted by this central through hole.
17. a baffle groups comprises:
A plurality of baffle plates;
Wherein each baffle plate has at least one outer through holes;
Described baffle plate has first end plate and second end plate;
Wherein each baffle plate is connected to other baffle plates by at least one baffle walls,
Wherein when this baffle groups was placed into container, each baffle plate and chamber wall were contiguous,
Continuous passage, by this continuous passage, fluid by at least one outer through holes, arrives a side of second end plate opposite with other baffle plates from a side inflow of first end plate opposite with other baffle plates.
18. baffle groups as claimed in claim 17,
Wherein at least one baffle plate has a central through hole,
This central through hole can holding conduit.
19. baffle group as claimed in claim 17, wherein at least one in this first end plate and this second end plate is made up of high thermal conductivity alloy.
20. a method of annotating the cooling inject cores comprises:
Pressurization is injected cooling medium to the bottom section by the cooling chamber that inner bottom surface limited of inject cores;
From cooling chamber outlet discharge cooling medium is discharged from cooling chamber;
Transmit heat from the inner bottom surface of inject cores with heat pipe.
21. method as claimed in claim 20 further comprises:
Inject the heat radiation cooling medium by the heat dissipation channel pressurization,
The cooling medium that wherein dispels the heat can absorb the heat that transmits from the inner bottom surface of the inject cores with heat pipe.
22. method as claimed in claim 20, wherein this cooling medium is with the bottom of enough capacity speed pressurization injection cooling chambers, and making the cooling medium of discharging coolant feed pipes is turbulent flow.
CNA2006800163318A 2005-05-12 2006-03-10 Coolant system for inject cores Pending CN101175624A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67998505P 2005-05-12 2005-05-12
US60/679,985 2005-05-12

Publications (1)

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CN101175624A true CN101175624A (en) 2008-05-07

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Application Number Title Priority Date Filing Date
CNA2006800163318A Pending CN101175624A (en) 2005-05-12 2006-03-10 Coolant system for inject cores

Country Status (4)

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EP (1) EP1888315A2 (en)
CN (1) CN101175624A (en)
CA (1) CA2607258A1 (en)
WO (1) WO2006124102A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700095A (en) * 2012-05-29 2012-10-03 苏州市欣龙塑胶模具有限公司 Fountain type water channel cooling mould core
CN103895186A (en) * 2014-04-15 2014-07-02 昆山市大久电子有限公司 Two-pipe type water-cooling and anti-drawing sprue bush
CN114905697A (en) * 2021-01-28 2022-08-16 住友重机械工业株式会社 Injection molding machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62238717A (en) * 1986-04-09 1987-10-19 Nissei Plastics Ind Co Method of molding tubular container
JPS6449615A (en) * 1987-08-20 1989-02-27 Fuji Photo Film Co Ltd Mold for spool injection molding
JPH0834022A (en) * 1994-07-26 1996-02-06 Matsumura Seikei:Kk Temperature control device of mold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102700095A (en) * 2012-05-29 2012-10-03 苏州市欣龙塑胶模具有限公司 Fountain type water channel cooling mould core
CN103895186A (en) * 2014-04-15 2014-07-02 昆山市大久电子有限公司 Two-pipe type water-cooling and anti-drawing sprue bush
CN103895186B (en) * 2014-04-15 2016-08-17 昆山一邦泰汽车零部件制造有限公司 Double hose water-cooled anti-wire drawing sprue bush
CN114905697A (en) * 2021-01-28 2022-08-16 住友重机械工业株式会社 Injection molding machine

Also Published As

Publication number Publication date
EP1888315A2 (en) 2008-02-20
WO2006124102A3 (en) 2007-02-15
WO2006124102A2 (en) 2006-11-23
CA2607258A1 (en) 2006-11-23

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