CN108819125A - Needle and hot runner system with the needle - Google Patents
Needle and hot runner system with the needle Download PDFInfo
- Publication number
- CN108819125A CN108819125A CN201811033950.9A CN201811033950A CN108819125A CN 108819125 A CN108819125 A CN 108819125A CN 201811033950 A CN201811033950 A CN 201811033950A CN 108819125 A CN108819125 A CN 108819125A
- Authority
- CN
- China
- Prior art keywords
- needle
- cavity
- ontology
- main component
- plug
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims description 20
- 238000012876 topography Methods 0.000 claims description 2
- 238000004513 sizing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 238000009826 distribution Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Present invention discloses a kind of needle and with the hot runner system of the needle.The needle has needle ontology, and the needle ontology has the top and bottom being oppositely arranged, and the lower end of the needle ontology can be corresponded to the cast gate of hot flow path；The needle also has cavity, and the cavity is formed at the lower end in the needle ontology and close to the needle ontology in seal shape.
Description
Technical field
The present invention relates to Hot runner Technology field more particularly to a kind of needle and with the hot runner system of the needle.
Background technique
It is at present that hot runner plastic injection mould passes through for common die in the injection mold that Injection Industry generallys use
The plastic cement products quality of hot runner system injection molding is higher, and hot runner system has saving raw material, improves production efficiency, automation
The advantages that degree is high.
Hot runner system generally includes driving device, hot mouth component and needle.The needle is at least partly disposed in institute
Hot mouth component internal is stated, the driving device directly or indirectly connects the upper end of the needle and drives the needle along longitudinal direction
(namely up and down direction) moves back and forth, so that (its is attached for the gum outlet of the lower end closed of the needle or the unlatching hot mouth component
Closely it is formed with the cast gate of hot flow path).When the needle opens the gum outlet of the hot mouth component, sizing material is melted through the hot mouth
Component flows into mold cavity, and forms injection-molded item；When the needle closes the gum outlet of the hot mouth component, glue is melted
The path that material flows into mold cavity through the hot mouth component is truncated.
And the needle at least end portion moves in melting sizing material, with reciprocating motion, the needle constitutes one
A heat-conducting piece to continuous heat transfer at cast gate often will cause and correspond to appearance heating trace at cast gate on injection-molded item surface,
Or sticking for injection-molded item occurs, influence the processing yield of injection-molded item.
Summary of the invention
To solve the above problems, the purpose of the present invention is to provide a kind of needle and with the hot runner system of the needle.
One of for achieving the above object, one embodiment of the invention provides a kind of needle, and the needle has needle
Ontology, the needle ontology have the top and bottom being oppositely arranged, and the lower end of the needle ontology can be corresponded to hot flow path
Cast gate；The needle also has cavity, and the cavity is formed in the needle ontology and close to the needle in seal shape
At the lower end of ontology.
Further improvement as an embodiment of the present invention, the needle ontology include main component and plug, the main body
Part is rod-shaped in lengthwise, and on the lower end surface of main component described in the upper canyon topography Cheng Yu in cavity longitudinal direction, the plug is coupled to institute
It states at the lower end surface of main component and seals the cavity.
Further improvement as an embodiment of the present invention, the plug include being bonded to fit with the lower end surface of the main component
Match junction with ground.
Further improvement as an embodiment of the present invention, the lower end surface with junction and the main component are disposed as
Plane and the two is isometrical.
Further improvement as an embodiment of the present invention, the outer wall of the main component are set as cylindrical；The plug
Lower end surface limit the lower end of the needle ontology, the plug is set as by described with junction to the lower end surface of the plug
The circular cone shape that diameter is gradually reduced.
Further improvement as an embodiment of the present invention, the plug include protruding out the sealing for matching junction,
The sealing is planted in the cavity.
Further improvement as an embodiment of the present invention, the sealing have far from the distal end with junction setting
Face, the distal face of the sealing are at least partly set as cambered surface or by lower and upper centroclinal inclined-planes.
Further improvement as an embodiment of the present invention, the cavity and the needle ontology are coaxial.
Further improvement as an embodiment of the present invention, the main component have outer wall and cross the interior of the cavity
The cross section of wall, the cross section of the outer wall and the inner wall is in concentric circles.
One of for achieving the above object, one embodiment of the invention additionally provides a kind of hot runner system, the hot-fluid
Road system includes the hot flow path and the needle with cast gate, and the lower end of the needle is corresponding to the cast gate.
Compared with prior art, the invention has the advantages that：By the way that the cavity is arranged, by the needle ontology
Lower end be made into hollow structure, reduce the thermal capacity of needle at the cast gate, reduce the conduction of heat of needle, to drop
It is corresponded on injection-molded item surface made of low at cast gate and a possibility that heating trace occurs, while reducing a possibility that sticking,
Promote the yield of injection-molded item.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the part of the needle of one embodiment of the invention；
Fig. 2 is the partial cutaway schematic view of the part of the needle of one embodiment of the invention；
Fig. 3 is the cross-sectional view of the line A-A along Fig. 2；
Fig. 4 is the structural exploded view of the part of the needle of one embodiment of the invention.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
One embodiment of the invention provides a kind of hot runner system, is applied in injection mold, which includes
Driving device, flow distribution plate, hot mouth and needle.
The hot mouth is assembled in below the flow distribution plate, is formed in the flow distribution plate and the hot mouth for melting sizing material stream
Dynamic hot flow path.Wherein, the hot flow path includes the assignment channel being formed in the flow distribution plate, the assignment channel have with
The compatible glue inlet of injection molding machine nozzle and at least one gum outlet；The runner further includes being formed in the hot mouth
Channel is transported, the hot mouth is assembled at the gum outlet, the transport channel and the assignment channel fluid communication, described
Transporting channel has the corresponding cast gate to mold cavity.
Join Fig. 1, in this application, the ontology of needle 100 is set as lengthwise rod-like element comprising the first end being oppositely arranged
With second end 101, the direction of second end 101 is directed toward for "lower", instead by the first end for ease of description, defining in this application
It is "upper" by the direction that second end 101 is directed toward the first end, then the longitudinally of the ontology of needle 100 is also referred to as up and down
Direction or longitudinal direction；It is laterally with the perpendicular direction definition of the longitudinally of 100 ontology of needle.
In this way, the first end can also be referred to as the upper end of 100 ontology of needle, second end 101 can also be referred to as valve
The lower end 101 of 100 ontology of needle.
The upper end of 100 ontology of needle is connected directly or indirectly in the driving device, the lower end of 100 ontology of needle
101 pass through the flow distribution plate and are partially configured in the transport channel in the hot mouth, the lower end 101 of 100 ontology of needle
The cast gate corresponding to the hot flow path.
Under the driving of the driving device, 100 longitudinally reciprocating motion of needle is to transport channel described in opening and closing of fault, tool
Body：When needle 100 moves longitudinally upward, when the transport channel is opened in the lower end 101 of 100 ontology of needle, sizing material is melted
It can be entered in mold cavity by the transport channel；When needle 100 moves longitudinally downward, the lower end 101 of 100 ontology of needle
When closing the transport channel, melting sizing material can not be entered in mold cavity by the transport channel.
Join Fig. 2, in this application, needle 100 further includes cavity 200, and cavity 200 is at lower end 101 and in sealing
It is formed in shape in 100 ontology of needle.In this way, being reduced by the way that the lower end 101 of 100 ontology of needle is nearby made into hollow structure
The thermal capacity of needle 100 at the cast gate reduces the conduction of heat of needle 100, thus injection-molded item surface made of reducing
Occur a possibility that heating trace at upper corresponding cast gate, while reducing a possibility that sticking, promotes the yield of injection-molded item.
Further, join Fig. 3,100 ontology of needle includes main component 10 and plug 20.
Main component 10 constitutes the overwhelming majority of 100 ontology of needle and is in that lengthwise is rod-shaped, limits the institute of 100 ontology of needle
State upper end.
Cavity 200 is hollowly formed in longitudinally upward on the lower end surface 12 of main component 10.
Plug 20 is coupled at the lower end surface 12 of main component 10, and sealing cavity 200.
In this way, the needle 100 of the present embodiment passes through the main component 10 and plug 20 of split settings, facilitate adding for cavity 200
Work molding, and by being sealed to cavity 200, it can avoid melting sizing material and enter in cavity 200 and sizing or hiding material is caused (can to lead
Cause colour changing bad).Certainly, in alternate embodiments, also needle 100 can be processed by way of being integrally formed ground.
Wherein, join Fig. 3 and Fig. 4,100 ontology of needle and cavity 200 are coaxially disposed.Specifically, 100 ontology of needle has
Along the central axes V of longitudinally, cavity 200 is set at the V of central axes and using central axes V as central axes.
Main component 10 has outer wall 11 and inner wall 13, and inner wall 13 is for crossing cavity 200.Preferably, inner wall 13 is transversal
Face and the cross section of outer wall 11 are set as concentric circles, that is, cross section of the main component 10 at cavity 200 is annular in shape.In this way,
It can guarantee that 100 structure of needle is uniform.
Further, join Fig. 3, plug 20 includes matching junction 22, is bonded and fits with the lower end surface 12 of main component 10 with junction 22
Match.In the present embodiment, the lower end surface 12 with junction 22 and main component 10 is disposed as plane, close convenient for fitting in this way, keeps away
Exempt to melt sizing material and enter with causing sizing between junction 22 and lower end surface 12.Certainly, in other embodiments, match 22 He of junction
The lower end surface 12 of main component 10 may be arranged as the three-dimensional surface to fit each other, such as cambered surface, wavy surface etc..
It is set as isometrical with the lower end surface 12 of main component 10 with junction 22, to avoid the lower end surface 12 of main component 10 and match
Segment difference is formed between junction 22, guarantees that 100 body surface of needle is smooth.
Further, the lower end surface 23 of plug 20 limits the lower end 101 of 100 ontology of needle.
Plug 20 is set as the circular cone shape by being gradually reduced with junction 22 to 23 diameter of lower end surface.It is certainly, without being limited thereto,
Such as：In alternate embodiments, plug 20 may also be configured to by the cylinder isometrical to lower end surface 23 with junction 22；Alternatively,
Plug 20 is disposed proximate to the part cylindrical and close to lower end surface 23 of the part with junction 22 in circular cone shape, the two parts
It is isometrical to connect.
The outer wall 11 of main component 10 is set as cylindrical.
Further, plug 20 further includes sealing 21, and sealing 21 is protruded out with junction 22, when plug 20 is coupled to master
When on body part 10, sealing 21 is adaptedly inserted in cavity 200, with sealing cavity 200.
Preferably, the side wall of sealing 21 is with interference closely against the inner wall 13 of main component 10, thus increase sealing effect,
And the mating intensity of plug 20 Yu main component 10 is reinforced, avoid plug 20 from surprisingly falling off from main component 10.
Sealing 21 also has far from the distal face 210 being arranged with junction 22, and distal face 210 is at least partly set as arc
Face or inclined-plane, in the present embodiment, distal face 210 be at least partly set as inclined-plane and the inclined-plane from the near to the distant (namely by
It is lower and on) to center inclination namely sealing 21 be set as up-small and down-big structure, consequently facilitating sealing 21 is inserted in cavity
In 200.
Compared with prior art, the invention has the advantages that：
(1) by setting cavity 200, to reduce the thermal capacity of needle 100 at the cast gate, the heat of needle 100 is reduced
There is a possibility that heating trace to corresponded at cast gate on injection-molded item surface made of reducing, while reducing hair in conduction
Raw a possibility that sticking, promote the yield of injection-molded item；
(2) main component 10 and plug 20 for passing through split settings, facilitate the machine-shaping of cavity 200；
(3) by sealing cavity 200, optimize the couplings between plug 20 and main component 10, can avoid melting sizing material
In into cavity 200 or enter between plug 20 and main component 10, avoids colour changing caused by expecting due to sizing or hiding bad, promoted
The yield of injection-molded item.
Illustrating only for feasible embodiment of the invention is described in detail in those listed above, they are simultaneously
It is non-to limit the scope of the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention or change should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of needle, the needle has needle ontology, and the needle ontology has the top and bottom being oppositely arranged, described
The lower end of needle ontology can be corresponded to the cast gate of hot flow path；It is characterized in that, the needle also has cavity, the cavity is in close
It is formed at the lower end in the needle ontology and close to the needle ontology to envelope shape.
2. needle according to claim 1, which is characterized in that the needle ontology includes main component and plug, the master
Body part is rod-shaped in lengthwise, and on the lower end surface of main component described in the upper canyon topography Cheng Yu in cavity longitudinal direction, the plug is coupled to
At the lower end surface of the main component and seal the cavity.
3. needle according to claim 2, which is characterized in that the plug includes being bonded with the lower end surface of the main component
Adaptedly match junction.
4. needle according to claim 3, which is characterized in that the lower end surface with junction and the main component is respectively provided with
For plane and the two it is isometrical.
5. needle according to claim 3, which is characterized in that the outer wall of the main component is set as cylindrical；It is described stifled
The lower end surface of head limits the lower end of the needle ontology, and the plug is set as by described with junction to the lower end of the plug
The circular cone shape that face diameter is gradually reduced.
6. needle according to claim 3, which is characterized in that the plug includes protruding out the sealing for matching junction
Portion, the sealing are planted in the cavity.
7. needle according to claim 6, which is characterized in that the sealing has far from described with the remote of junction setting
End face, the distal face of the sealing are at least partly set as cambered surface or by lower and upper centroclinal inclined-planes.
8. needle according to claim 2, which is characterized in that the cavity and the needle ontology are coaxial.
9. needle according to claim 8, which is characterized in that the main component has outer wall and crosses the interior of the cavity
The cross section of wall, the cross section of the outer wall and the inner wall is in concentric circles.
10. a kind of hot runner system, which is characterized in that the hot runner system includes that there is the hot flow path of cast gate and right to want
1~9 described in any item needles are sought, the lower end of the needle is corresponding to the cast gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033950.9A CN108819125A (en) | 2018-09-05 | 2018-09-05 | Needle and hot runner system with the needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033950.9A CN108819125A (en) | 2018-09-05 | 2018-09-05 | Needle and hot runner system with the needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108819125A true CN108819125A (en) | 2018-11-16 |
Family
ID=64149567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811033950.9A Withdrawn CN108819125A (en) | 2018-09-05 | 2018-09-05 | Needle and hot runner system with the needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108819125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546581A (en) * | 2020-05-28 | 2020-08-18 | 广东铭利达科技有限公司 | Pouring structure of hot runner mold |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2516583A1 (en) * | 2003-02-20 | 2004-09-02 | Herbert Guenther | Needle valve nozzle |
| WO2005110701A1 (en) * | 2001-07-06 | 2005-11-24 | Husky Injection Molding Systems Ltd. | Improved apparatus for injection molding articles |
| WO2015013392A1 (en) * | 2013-07-23 | 2015-01-29 | Synventive Molding Solutions, Inc. | Two piece valve pin |
-
2018
- 2018-09-05 CN CN201811033950.9A patent/CN108819125A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005110701A1 (en) * | 2001-07-06 | 2005-11-24 | Husky Injection Molding Systems Ltd. | Improved apparatus for injection molding articles |
| CA2516583A1 (en) * | 2003-02-20 | 2004-09-02 | Herbert Guenther | Needle valve nozzle |
| WO2015013392A1 (en) * | 2013-07-23 | 2015-01-29 | Synventive Molding Solutions, Inc. | Two piece valve pin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546581A (en) * | 2020-05-28 | 2020-08-18 | 广东铭利达科技有限公司 | Pouring structure of hot runner mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181116 |