CN106626267A - Needle valve type hot runner mold and valve needle assembly - Google Patents
Needle valve type hot runner mold and valve needle assembly Download PDFInfo
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- CN106626267A CN106626267A CN201710106424.XA CN201710106424A CN106626267A CN 106626267 A CN106626267 A CN 106626267A CN 201710106424 A CN201710106424 A CN 201710106424A CN 106626267 A CN106626267 A CN 106626267A
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- valve
- needle
- hot flow
- power unit
- shunting
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- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 24
- 239000007924 injection Substances 0.000 description 24
- 239000004033 plastic Substances 0.000 description 21
- 229920003023 plastic Polymers 0.000 description 21
- 239000003921 oil Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000717 retained effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 206010023126 Jaundice Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
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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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2737—Heating or cooling means therefor
-
- 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
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
-
- 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
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a valve needle assembly. The valve needle assembly comprises a power unit, a valve needle and a valve needle plate, wherein the valve needle is connected onto the power unit; the power unit drives multiple valve needles to do reciprocating linear motion along the axial direction of the valve needles through the valve needle plate. The invention also provides a needle valve type hot runner mold. The needle valve type hot runner mold comprises a mold body, a hot runner, the valve needle assembly and hot nozzles, wherein the hot runner is formed in the mold body; multiple valve cavities which are locally communicated with the hot runner are also formed in the mold body; the power unit is fixed with the mold body; the hot nozzles are formed in positions, where valve cavities penetrate through the surface of the mold body, of the valve cavities; each valve cavity is internally provided with one valve needle; the hot runner is enabled to be communicated with and separated from the hot nozzles through reciprocating motion of the valve needles. All valve needles of the valve needle assembly are fixed to the same valve needle plate, and the valve needle plate is driven by the power unit, so that synchronous movement of all valve needles is realized, each valve needle is not required to be equipped with one power unit, and the needle valve type hot runner mold and the valve needle assembly have the advantages that less power units are used, the cost is reduced, the injection molding consistency is increased, and the synchronicity is good.
Description
Technical field
The present invention relates to injection mold field, in particular to a kind of needle-valve type hot flow passage mold and needle component.
Background technology
At present, in plasthetics finished product ejection formation field, Hot runner Technology has been widely used, and Hot runner Technology not only may be used
Wasted with reducing plastic material, shorten molding cycle improving production efficiency, also improve the qualification rate of product, and the outward appearance of finished product
Face is not in charging vestige, reduces production cost.
The plastics of molten condition, are injected in the mould of cavity through hot flow path, each die cavity one hot mouth of correspondence,
In prior art, each hot mouth by a cylinder or hydraulic oil cylinder driving, due to the size and cylinder or oil cylinder of each hot mouth
Size be all certain, cause the center distance between each hot mouth to realize Small Distance, and accurate microminiature product mould
The size of tool is determined by the spacing between hot mouth, so, mould volume can be caused excessive, the tonnage of injection machine is excessive, energy
Consumption increases therewith, long the production cycle, and production cost is high, does not meet the theory of energy-conserving and environment-protective, and the precision for being molded by the product for coming is anti-
And cannot ensure.
Secondly, mold cavity quantity is more, it is desirable to which each die cavity enters glue will keep balance, so the action for entering glue and needle is necessary
Keep synchronous, multiple needles are opened and closed simultaneously, thus must just can guarantee that each cavity products synchronization filling of injection is complete,
Product pressure is balanced, and quality standard is consistent.And in prior art, each hot mouth is controlled by a cylinder or oil cylinder, more than institute
State parameter and hardly result in guarantee.
The content of the invention
In view of this, the invention aims to overcome deficiency of the prior art, there is provided a kind of power unit is used
Few, reduces cost, lift the excellent needle-valve type hot flow passage mold of injection uniformity and synchronism and needle component.
To solve the above problems, the first solution that the present invention is provided is as follows：
Needle component, including power unit and the needle being connected on the power unit, it is described dynamic also including valve pin plate
Power unit drives multiple needles to do the linear reciprocating motion along needle axial direction by the valve pin plate.
In the exemplary embodiment, the power unit includes at least one cylinder or oil cylinder.
Power unit drives valve pin plate to do linear reciprocating motion, it is known that power unit is linear motion device, can be according to making
Different linear motion devices is selected with demand.Cylinder and oil cylinder are a standard component, and its driving force is unique with movement travel, can
Mould is designed according to the technical parameter of cylinder.Size and the size scale choosing of needle-valve type hot flow passage mold according to needle plate suqare
With the cylinder or oil cylinder of respective numbers, driving force and stroke.Cylinder is selected when generally driving force demand is less, is selected when driving larger
Use oil cylinder.
To solve the above problems, the second solution that the present invention is provided is as follows：
Needle-valve type hot flow passage mold, including die ontology, and the hot flow path being formed in the die ontology, also include
Above-mentioned needle valve assembly and hot mouth, are also formed with multiple valve pockets that local connects with the hot flow path in the die ontology；
The power unit is fixed with the die ontology, and each valve pocket sets at the surface of the die ontology
There is the hot mouth, a needle is provided with each valve pocket, the linear reciprocating motion of the needle makes the hot flow path
Connect and isolate with the hot mouth.
In the exemplary embodiment, the die ontology includes runner plate and be connected on the runner plate at least one
Shunting injecting head, each shunting injecting head is formed through multiple valve pockets.
Die ontology is divided into into the structure of runner plate and multiple shunting injecting heads, hinge structure by all of valve pocket
Cylinder or oil cylinder are individually provided with, the structure of heating collar is individually provided with, hot flow path Small Distance is realized.
In the exemplary embodiment, the shunting injecting head is cylindrical, and multiple valve pockets uniformly run through described point
Stream injecting head, the shunting injecting head is axially axially identical with the needle.
Columned shunting injecting head is heated, radiates uniformly, can guarantee that the valve pocket being distributed in the shunting injecting head is received
It is hot uniform, to reach excellent injection effect.
In the exemplary embodiment, also include the heating unit on the runner plate, the runner plate with described point
Stream injecting head is heat conducting element.
Heating unit heating flow channel plate on the runner plate, runner plate and shunting injecting head are heat conducting element, heat by
Runner plate is transmitted on shunting injecting head, and each shunting injecting head is heated evenly, and remains the raw material in hot flow path and valve pocket
For the perfect condition of melting.
In the exemplary embodiment, it is provided with dottle pin between the bared end of the hot mouth and the die ontology.
Because thermal expansion with die ontology without fitting, head has dead angle to deposit glue to traditional hot mouth head.Such as in injection glue
During body, colloid can be flowed in the middle of space, retained, continuous heating, and plastics can be made to turn to be yellow, and be such as flowed in die cavity, can cause product
Quality problems.For another example, when a kind of plastics of color are injected, the plastics of this color inevitably flow to be deposited in space
Stay, reinject another kind of color, can mix with the plastics of this color for retaining, stream causes product colour mixture in die cavity, equally
Influence whether product.Therefore in this structure there is great drawback in prior art.Dottle pin is provided with hot mouth head, without dead angle, modeling
Material will not be retained.
In the exemplary embodiment, the dottle pin is flexible member.
The dottle pin of elasticity fills up in the gap between die ontology and hot mouth, and gap and dead angle are reduced as far as possible, improves
Injection yield.
In the exemplary embodiment, the valve pin plate is fixedly connected with the die ontology by guide pillar, the valve pin plate
Linear reciprocating motion is done along the guide pillar, ball fairlead is provided between the valve pin plate and the guide pillar.
The valve pin plate that power unit is interlocked, when moving up and down, is slided in fairlead the guarantee of this structure by guide pillar
, guide pillar and fairlead rolling friction.For sliding friction, rolling frictional resistance is less, and is difficult stuck, it is ensured that
The stability of mechanism.
In the exemplary embodiment, the bending part of the hot flow path is provided with and seamlessly transits part.
In injection mold, some hot flow paths be vertically through, vertically through runner, its one end needs stifled with plug
Extremely, then will necessarily dead angle area formed here.Plastics flow into this region, and the plastics at this position are difficult circulation, continuous heating meeting
Carbonization jaundice, and the plastics of another kind of color are added, colour mixture, the plastics in this region can be caused to be flowed into again in die cavity and can cause
The quality problems of product.Add in the bending part and seamlessly transit part, realize without dead angle so that the smooth transition folding of the bending part
Curved, generally this seamlessly transits the part that part can select concave arc planar or straight inclined plane shape.
The needle-valve type hot flow passage mold of the present invention and all needles of needle component are fixed on one piece of valve pin plate, by power
Unit drives, and realizes the synchronization action of each needle, is not required to each needle and is equipped with a power unit, is that a kind of power unit makes
With few, reduces cost, reduce injection mold volume, lift the excellent needle-valve type hot flow passage mold of injection uniformity and synchronism
And needle component.
To enable the above objects, features and advantages of the present invention to become apparent from and understandable, preferred embodiment cited below particularly, and match somebody with somebody
Appended accompanying drawing is closed, is described below in detail.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, thus be not construed as it is right
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows the overall structure diagram of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided；
Fig. 2 shows that the inner flow passage cross-section structure of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided is illustrated
Figure；
Fig. 3 shows the overall structure top view of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided；
Fig. 4 shows the step profile structural representation of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided；
Fig. 5 shows that the structure that the needle of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided coordinates with valve pocket is shown
It is intended to；
Fig. 6 shows the structural representation of the hot flow path bending part of the needle-valve type hot flow passage mold that the embodiment of the present invention is provided
Figure.
Main element symbol description：
1- needle-valve type hot flow passage molds；11- die ontologies；111- runner plates；112- shunts injecting head；12- hot flow paths；
121- plugs；122- seamlessly transits part；13- needle components；131- power units；132- needles；133- valve pin plates；14- hot mouths；
15- valve pockets；16- guide rods；17- ball fairleads；18- valve pockets；19- dottle pins.
Specific embodiment
For the ease of understanding the present invention, needle-valve type hot flow passage mold and needle component are carried out below with reference to relevant drawings
More fully describe.The preferred embodiment of needle-valve type hot flow passage mold and needle component is given in accompanying drawing.But, needle-valve type hot
Runner mold and needle component can be realized by many different forms, however it is not limited to embodiment described herein.Phase
Instead, there is provided the purpose of these embodiments is to make the disclosure to needle-valve type hot flow passage mold and needle component more thorough complete
Face.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Conversely, when element be referred to as " directly existing " another element " on " when,
There is no intermediary element.Term as used herein " vertical ", " level ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.Herein in the used in the description of needle-valve type hot flow passage mold and needle component
Term be intended merely to describe specific embodiment purpose, it is not intended that limit the present invention.Term as used herein " and/
Or " including the arbitrary and all of combination of one or more related Listed Items.
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is elaborated.
Embodiment
See also Fig. 1 and Fig. 2, needle-valve type hot flow passage mold 1, including die ontology 11 and be formed at die ontology
In hot flow path 12, also including needle valve assembly 13 and hot mouth 14, be also formed with die ontology 11 local connect with hot flow path 12
Multiple valve pockets 15.
Needle component 13, including power unit 131 and the needle 132 being connected on power unit, also including valve pin plate
133, power unit 131 drives multiple needles 132 to do and does linear reciprocating motion along the axial direction of needle 132 by valve pin plate 133.
Each valve pocket 15 is provided with hot mouth 14 at the surface of die ontology 11, and a needle is provided with each valve pocket 15
132, hot flow path 12, hot mouth 14 is connected and is isolated with mould by the reciprocating motion of needle 132.
Power unit 131 drives valve pin plate 133 to do linear reciprocating motion, it is known that power unit 131 is linear motion device,
Different linear motion devices can be selected according to use demand.Cylinder and oil cylinder are a standard component, its driving force and motion row
Cheng Weiyi, can design mould according to the technical parameter of cylinder.According to the size and needle-valve type hot flow passage mold of the area of valve pin plate 133
1 size scale is from least one cylinder or oil cylinder.Cylinder is selected when generally driving force demand is less, is selected when driving larger
Oil cylinder.
In the present embodiment, power unit 131 is 4 oil cylinders.Oil cylinder has larger driving force and stability, while having
Good buffering effect, can guarantee that valve pin plate 133 is smoothly moved back and forth.4 identical oil cylinders are connected to the four of valve pin plate 133
Angle, each oil cylinder synchronous working causes valve pin plate 133 when moving back and forth relative to mould the uniform force application of valve pin plate 133
The angle of body 11 is constant, so as to ensure that needle 132 is smoothly moved in valve pocket 15.
Above-mentioned, power unit 131 is fixed with the relative position of die ontology 11.Power unit 131 passes through one piece of valve pin plate
133 drive the synchronous straight reciprocating motion done on the axial direction of needle 132 of each needle 132, make on the surface of die ontology 11
Hot mouth 14 connect and isolate with hot flow path 12 by valve pocket 15, connection when injection discharging, isolation when injection stop discharging.
Specifically, die ontology 11 includes runner plate 111 and at least one shunting injecting head being connected on runner plate 111
112, each shunting injecting head 112 is formed through multiple valve pockets 15.In the present embodiment, runner plate 111 and shunting injecting head 112
Then link together for split manufacture, single part is simple to manufacture, and cost is relatively low, and the accuracy of manufacture of single part compared with
It is high.
It is appreciated that runner plate 111 and shunting injecting head 112 can also adopt integral structure, although difficulty of processing is big,
But overall structure eliminates installation step, and can there is no injection raw material and reveal and flow in inner flow passage as one yet
The pressure loss in journey.The die ontology 11 of different structure can be selected according to specific use demand.
Hot flow path 12 and the valve pocket being provided with runner plate 111 in a plurality of hot flow path 12 and multiple valve pockets 15, and runner plate 111
15 is separate, does not mutually connect.It should be noted that runner is the general designation of valve pocket 15 and hot flow path 12.In the present embodiment, runner
The plate body of rectangular-shape of the plate 111 in rule.Hot flow path 12 in runner plate 111 is distributed with the plate face parallel to runner plate 111
Circular hole, also have a circular hole of the plate face perpendicular to runner plate 111, and the circular hole parallel to the plate face of runner plate 111 hangs down with being located at
Nogata circular hole upwards mutually passes through connection.Run through the lower face of runner plate 111 perpendicular to the circular hole of the plate face of runner plate 111.Runner
Valve pocket 15 in plate 111 is the through hole of the plate face up and down through runner plate 111.It should be noted that plate face herein is
The maximum face of the area of runner plate 111.
In the present embodiment, shunting injecting head 112 is cylindrical, and multiple valve pockets 15 uniformly through shunting injecting head 112, divide
Stream injecting head 113 is axially identical with the axial direction of needle 132.8 shunting injecting heads are evenly distributed with the lower face of runner plate 111
112, what each shunting injecting head 112 ran through be provided with 4 valve pockets 15 and it is coaxial be provided with a hot flow path 12, the hot flow path 12
With connect with 4 valve pockets 15 respectively.Switch to 4 hot flow paths 12 equivalent to by 1 hot flow path 12, realize little of hot flow path 12
Away from injection.
Simultaneously columned shunting injecting head 112 is heated, radiates uniformly, can guarantee that and is distributed in shunting injecting head 112
Valve pocket 15 is heated evenly, to reach excellent injection effect.
This needle-valve type hot flow passage mold 1 also includes the heating unit (not shown) on runner plate 111, runner plate
111 are heat conducting element with shunting injecting head 112.The material of mould is usually steel, and steel have preferable thermal conductivity.
Heating unit is heat conduction located at heating flow channel plate 111 on runner plate 111, runner plate 111 and shunting injecting head 112
Element, heat is transmitted on shunting injecting head 112 by runner plate 111, and each shunting injecting head 112 is heated evenly, and remains
Raw material in hot flow path 12 and valve pocket 15 is the perfect condition of melting.
Heating element heater is relatively easy to obtain, and here is not done and specifically repeated.
Fig. 3 and Fig. 4 is seen also, power unit 131 is fixed with the relative position of die ontology 11.In the present embodiment,
Power unit 131 is fixedly connected by guide rod 16 with deflector 111, and valve pin plate 133 is provided with the through hole for allowing that guide rod 16 is passed through.
Power unit 131 is moved back and forth by the reciprocating motion valve needle 132 of valve needle plate 133.Valve pin plate 133 and guide rod 16 it
Between be provided with ball fairlead 17, ball fairlead 17 can regard a kind of linear roller bearing as.Adding ball fairlead 17 makes needle
Sliding friction between plate 133 and guide rod 16 is changed into rolling friction, that is, become linear contact lay into point contact, reduces frictional resistance, together
When reduce the noise and heat produced because of friction.Simultaneously less frictional resistance reduces component abrasion, in relative motion
Shi Buyi is stuck so that the movement of needle 132 is more smooth.
In the present embodiment, the lifting needle 132 of power unit 131 causes hot flow path 12 to connect with the hot mouth 14 of the port of valve pocket 15
It is logical, so as to the injection that discharges.Power unit 131 promotes needle 132 that hot flow path 12 is isolated with the hot mouth 14 of the port of valve pocket 15, from
And stop discharging injection.
At the crucial cooperation of needle 132 and valve pocket 15, can make should to have at the plastics sealing and circulation of molten condition compared with
Good precision, to ensure sealing during sealing, prevent leakage.But the valve pocket 15 on shunting injecting head 112 leads to for elongated
Hole, is relatively difficult to ensure thereon the higher processing of card precision.Thus in the present embodiment, shunt the end of each valve pocket 15 of injecting head 112
Hot mouth 14 is provided with mouthful, hot mouth 14 is embedded in shunting injecting head 112, and the endoporus of hot mouth 14 forms valve pocket.Embedded hot mouth 14
Endoporus there is less roughness and cylindricity, make the precision of valve pocket 15 on shunting injecting head 112 allow appropriate reduction, it is ensured that
It is good fit with needle 132.
Specifically, hot mouth 14 is the ladder shaft-like with through hole, and end is tightened up, and its external structure can refer to nail.
Valve pocket 18 is additionally provided with shunting injecting head 112, the little shaft end of hot mouth 14 is inserted in valve pocket 18, big end is against the end face of valve pocket 18
On.Then it is locked on shunting injecting head 112, so as to the position of hot mouth 14 be fixed by the external screw thread on valve pocket 18.
Dottle pin 19 is provided between the bared end and die ontology 11 of hot mouth 14.In the present embodiment, hot mouth 14 and valve pocket 18 it
Between be provided with dottle pin 19.
Because thermal expansion with die ontology 11 without pasting extremely, head has dead angle to deposit glue to the head of traditional hot mouth 14.Such as exist
During injection colloid, colloid can be flowed in the middle of space, retained, continuous heating, and plastics can be made to turn to be yellow, and be such as flowed in die cavity, can be made
Into product quality problem.For another example, when a kind of plastics of color are injected, the plastics of this color are inevitably flowed into sky
Retain in gap, reinject another kind of color, can mix with the plastics of this color for retaining, in runner die cavity, equally can affect
To product.Therefore in this structure there is great drawback in prior art.Dottle pin is provided with hot mouth head, without dead angle, plastics will not
Retain.
Dottle pin 19 is flexible member, is specifically the element soft compared with valve pocket 18 and the matter of hot mouth 14, such as valve pocket 18 and hot mouth
14 select steel, dottle pin 19 to select fire resistant resin material.The dottle pin 19 of elasticity is by between die ontology 11 and hot mouth 14
Gap is filled up, and gap and dead angle are reduced as far as possible, improves injection yield.
In addition, in injection mold, some hot flow paths be vertically through, vertically through runner, its one end needs to use
Plug is blocked, then will necessarily dead angle area formed here.Plastics flow into this region, and the plastics at this position are difficult circulation, continue
Heating can turn to be yellow, and add the plastics of another kind of color, can pollute, and the plastics in this region are flowed into again in die cavity and can make
Into the quality problems of product.
In the present embodiment, the hot flow path 12 in runner plate 111 parallel to plate face is the through hole through runner plate 111, should
Hot flow path 12 needs to be blocked using plug 121, and dead angle is generated after blocking.At the dead angle, i.e. the bending part of hot flow path 12 is added
Part 122 is seamlessly transitted, is realized without dead angle so that the smooth transition bending of the bending part, generally this seamlessly transits part 122 and can select
The part of concave arc planar or straight inclined plane shape.
The needle-valve type hot flow passage mold and needle component of the present invention has the advantages that：
1. all needles of needle-valve type hot flow passage mold and needle component are fixed on one piece of valve pin plate, are driven by power unit
It is dynamic, the synchronization action of each needle is realized, it is not required to each needle and is equipped with a power unit, it is that a kind of power unit is used less
, reduces cost, reduce injection mold volume, lift injection uniformity and the excellent needle-valve type hot flow passage mold of synchronism and valve
Needle assemblies.
2. die ontology is divided into needle-valve type hot flow passage mold the structure of runner plate and multiple shunting injecting heads, relatively existing
All of valve pocket is individually provided with technology cylinder or oil cylinder, is individually provided with the structure of heating collar, realizes little of hot flow path
Away from.
3. columned shunting injecting head is heated, radiates uniformly, can guarantee that the valve pocket being distributed in the shunting injecting head
It is heated evenly, to reach excellent injection effect.
4. heating unit is heat conducting element, heat located at heating flow channel plate on runner plate, runner plate and shunting injecting head
It is transmitted on shunting injecting head by runner plate, each shunting injecting head is heated evenly, and remains the original in hot flow path and valve pocket
Expect the perfect condition for melting.
5. dottle pin is provided with hot mouth head, without dead angle, plastics will not be retained.
6. the bending part in runner is added and seamlessly transits part so that the smooth transition bending of the bending part, reduces flowing resistance
Power, reduces friction loss, and without dead angle, the residual without injection raw material.
In all examples being illustrated and described herein, any occurrence should be construed as merely exemplary, and not
Be as restriction, therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and is explained in subsequent accompanying drawing.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore limitation of the scope of the invention can not be interpreted as.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection model of the present invention
Enclose.Therefore, protection scope of the present invention should be defined by claims.
Claims (10)
1. needle component, including power unit and the needle being connected on the power unit, it is characterised in that also including needle
Plate, the power unit drives multiple needles to do the linear reciprocating motion along needle axial direction by the valve pin plate.
2. needle component according to claim 1, it is characterised in that the power unit includes at least one cylinder or oil
Cylinder.
3. needle-valve type hot flow passage mold, including die ontology, and the hot flow path being formed in the die ontology, its feature exists
In, also including needle valve assembly as claimed in claim 1 and hot mouth, be also formed with the die ontology local and the hot-fluid
Multiple valve pockets of road connection；
The power unit is fixed with the die ontology, and each valve pocket is provided with institute at the surface of the die ontology
Hot mouth is stated, a needle is provided with each valve pocket, the linear reciprocating motion of the needle makes the hot flow path and institute
State hot mouth connection and isolate.
4. needle-valve type hot flow passage mold according to claim 3, it is characterised in that the die ontology include runner plate and
At least one shunting injecting head being connected on the runner plate, each shunting injecting head is formed through multiple valves
Chamber.
5. needle-valve type hot flow passage mold according to claim 4, it is characterised in that the shunting injecting head is cylindrical,
Multiple valve pockets uniformly run through the shunting injecting head, and the shunting injecting head is axially axially identical with the needle.
6. needle-valve type hot flow passage mold according to claim 4, it is characterised in that also include on the runner plate
Heating unit, the runner plate is heat conducting element with the shunting injecting head.
7. the needle-valve type hot flow passage mold according to claim 3-6 any one, it is characterised in that the hot mouth is exposed
Dottle pin is provided between end and the die ontology.
8. needle-valve type hot flow passage mold according to claim 7, it is characterised in that the dottle pin is flexible member.
9. the needle-valve type hot flow passage mold according to claim 3-6 any one, it is characterised in that the valve pin plate and institute
State die ontology to be fixedly connected by guide pillar, the valve pin plate does linear reciprocating motion, the valve pin plate and institute along the guide pillar
State and be provided between guide pillar ball fairlead.
10. the needle-valve type hot flow passage mold according to claim 3-6 any one, it is characterised in that the hot flow path
Bending part is provided with and seamlessly transits part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106424.XA CN106626267A (en) | 2017-02-27 | 2017-02-27 | Needle valve type hot runner mold and valve needle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106424.XA CN106626267A (en) | 2017-02-27 | 2017-02-27 | Needle valve type hot runner mold and valve needle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106626267A true CN106626267A (en) | 2017-05-10 |
Family
ID=58846869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710106424.XA Pending CN106626267A (en) | 2017-02-27 | 2017-02-27 | Needle valve type hot runner mold and valve needle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106626267A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107891584A (en) * | 2017-12-28 | 2018-04-10 | 苏州联开精密模具有限公司 | A kind of hot runner structure of injection mold |
| CN108274701A (en) * | 2017-12-19 | 2018-07-13 | 东莞市热恒注塑科技有限公司 | A kind of rectangular small spacing needle valve type hot runner system |
| CN113246399A (en) * | 2021-06-04 | 2021-08-13 | 海美克精密机械(苏州)有限公司 | Side needle valve suitable for injection mold |
| CN115532540A (en) * | 2022-12-01 | 2022-12-30 | 苏州康尼格电子科技股份有限公司 | Multi-point glue injection gun |
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| CN108274701A (en) * | 2017-12-19 | 2018-07-13 | 东莞市热恒注塑科技有限公司 | A kind of rectangular small spacing needle valve type hot runner system |
| CN107891584A (en) * | 2017-12-28 | 2018-04-10 | 苏州联开精密模具有限公司 | A kind of hot runner structure of injection mold |
| CN113246399A (en) * | 2021-06-04 | 2021-08-13 | 海美克精密机械(苏州)有限公司 | Side needle valve suitable for injection mold |
| CN115532540A (en) * | 2022-12-01 | 2022-12-30 | 苏州康尼格电子科技股份有限公司 | Multi-point glue injection gun |
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