CN107310107A - Valve needle of hot runner buffers feeding structure - Google Patents
Valve needle of hot runner buffers feeding structure Download PDFInfo
- Publication number
- CN107310107A CN107310107A CN201710734779.3A CN201710734779A CN107310107A CN 107310107 A CN107310107 A CN 107310107A CN 201710734779 A CN201710734779 A CN 201710734779A CN 107310107 A CN107310107 A CN 107310107A
- Authority
- CN
- China
- Prior art keywords
- needle
- hot
- cast gate
- hot nozzle
- gate department
- 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
Links
- 239000000872 buffer Substances 0.000 title claims abstract description 9
- 230000003139 buffering effect Effects 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 13
- 229920001169 thermoplastic Polymers 0.000 abstract description 4
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 4
- 238000004513 sizing Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 239000004568 cement Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000243 solution Substances 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Valve needle of hot runner buffers feeding structure, the present invention relates to thermoplastic processing technical field, refers in particular to one kind during thermoplastic processing, and the hot flow path that hot flow path exit can make the sizing material buffering into molten condition enter mold cavity buffers charging needle structure.It is achieved by the following technical solution：Valve needle of hot runner buffers feeding structure, including needle, cast gate department and hot nozzle, hot nozzle is installed in cast gate department, needle is arranged in hot nozzle, and can be under the promotion of cylinder, moved back and forth along the axis of hot nozzle, on the anterior excircle of needle, the symmetrical needle material returned groove being evenly equipped with along axis, the diameter on needle top is equal to the aperture of cast gate department discharge opening, between needle top and needle material returned groove, and needle is provided with the raised buffering boss of excircle, the diameter of described buffering boss is more than the aperture of cast gate department discharge opening, equal to the diameter of hot nozzle discharge opening.It is a flat segments at the maximum gauge of described buffering boss.
Description
Technical field
The present invention relates to thermoplastic processing technical field, one kind is referred in particular to during thermoplastic processing, hot flow path exit
The valve needle of hot runner that the sizing material buffering that can make into molten condition enters mold cavity buffers feeding structure.
Background technology
Hot flow path process technology be by injection machine by the plastic grain after processing with heating method come ensure runner and
The plastics of cast gate are kept molten by being molded.In existing hot flow path process, as shown in accompanying drawing 1,2,3, in hot nozzle 3
Needle 1 moved back and forth by piston in hot nozzle 3, the plastic cement of molten condition in hot nozzle 3 has been promoted by the top 11 of needle 1
A is endlessly injected into mould.Because working portion of the needle 1 in hot nozzle 3 is set by the top 11 of straightway and longitudinal direction
Put and constituted in the V-shaped needle material returned groove 12 of the external peripheral surface of needle 1, when the top 11 of needle 1 is moved through the heat of hot nozzle 3
During nozzle discharge opening 31, the plastic cement A movements of molten condition are promoted；When the cast gate department that the top 11 of needle 1 moves into cast gate department 2 goes out
When expecting hole 21, the plastic cement A of molten condition is plugged, and is flowed back from needle material returned groove 12, to alleviate the plastic cement A quilts because of molten condition
Pressure that is stifled and causing rises suddenly.In this process, due to the excessive velocities of needle 1, product directly bears larger note
Blow pressure, the product defects such as easily cause to turn to be yellow, black to product, meanwhile, the continuous quick acting of needle 1, easily to hot nozzle 3
The position of cast gate department 2 worn and torn.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art part, and a kind of valve needle of hot runner is provided and is buffered into
Expect structure.
The present invention is achieved through the following technical solutions：Valve needle of hot runner buffers feeding structure, including needle, cast gate department
And hot nozzle, hot nozzle is installed in cast gate department, and needle is arranged in hot nozzle, and can be under the promotion of cylinder, and the axis along hot nozzle is past
Multiple motion, on the anterior excircle of needle, is symmetrically evenly equipped with the needle material returned groove along axis, the diameter on needle top, which is equal to, to be poured
The aperture of mouth department discharge opening, between needle top and needle material returned groove, needle is provided with the raised buffering boss of excircle, institute
The diameter for the buffering boss stated is more than the aperture of cast gate department discharge opening, equal to the diameter of hot nozzle discharge opening.
It is a flat segments at the maximum gauge of described buffering boss.
The present invention utilizes the diameter difference for buffering boss and needle top, alternating due to being additionally arranged buffering boss in needle
The discharging opening of closure or openness hot flow path so that the plastic material of rapid flow is buffered, reduces the injection pressure of product,
It is effective to solve the problems such as product turns to be yellow, blacked.
Brief description of the drawings：
Accompanying drawing 1 is prior art construction schematic diagram；
Accompanying drawing 2 is the needle structure schematic diagram of prior art；
Accompanying drawing 3 is the needle B-B sectional views of prior art；
Accompanying drawing 4 is schematic structural view of the invention；
Accompanying drawing 5 is one of schematic diagram of the embodiment of the present invention；
Accompanying drawing 6 is the two of schematic diagram of the embodiment of the present invention；
Accompanying drawing 7 is the three of schematic diagram of the embodiment of the present invention.
Embodiment：
See accompanying drawing 4, valve needle of hot runner buffering feeding structure, including needle 1, cast gate department 2 and hot nozzle 3, hot nozzle 3 is installed in cast gate department
In 2, needle 1 is arranged in hot nozzle 3, and can be moved back and forth under the promotion of cylinder along the axis of hot nozzle 3, anterior in needle 1
On excircle, the needle material returned groove 12 along axis is symmetrically evenly equipped with, the diameter on the top 11 of needle 1 is equal to cast gate department discharge opening 21
Aperture, between the top 11 of needle 1 and needle material returned groove 12, needle 1 is described provided with the raised buffering boss 13 of excircle
The diameter for buffering boss 13 is more than the aperture of cast gate department discharge opening 21, equal to the diameter of hot nozzle discharge opening 31.
It is a flat segments at the maximum gauge of described buffering boss 13.
During using the present invention, when needle 1 is in the position shown in accompanying drawing 5, the buffering boss 13 of needle 1 goes out positioned at hot nozzle
Expect in hole 31, the diameter of hot nozzle discharge opening 31 is equal to due to buffering the diameter of boss 13, stop that plastic cement A below enters needle 1
The die cavity on top 11；And the top 11 of needle 1 is in open mode, plastic cement A is promoted to enter the die cavity of mould product；
When needle 1 is in the position shown in accompanying drawing 6, the top 11 of needle 1 starts to close plastic cement A, the buffering boss 13 of needle 1
Start to open at, squeezing actions of the plastic cement A in the die cavity of 1 top of needle 11 due to needle 1 forward, start adverse current backward, slow down
The action of needle 1 forward, makes the reduction of the speed of needle 1, serves certain cushioning effect, protect the cast gate department 2 of hot nozzle 3；
When needle 1 is in the position shown in accompanying drawing 7, the buffering boss 13 of needle 1 is opened completely, and the top 11 of needle 1 starts envelope
Close, complete once complete production life cycle injection.
Claims (2)
1. valve needle of hot runner buffers feeding structure, including needle, cast gate department and hot nozzle, hot nozzle is installed in cast gate department, and needle is set
Put in hot nozzle, and can be moved back and forth under the promotion of cylinder along the axis of hot nozzle, on the anterior excircle of needle, symmetrically
The needle material returned groove along axis is evenly equipped with, the diameter on needle top is equal to the aperture of cast gate department discharge opening, it is characterised in that：In valve
Between pin top and needle material returned groove, needle is provided with the raised buffering boss of excircle, and the diameter of described buffering boss is big
In the aperture of cast gate department discharge opening, equal to the diameter of hot nozzle discharge opening.
2. valve needle of hot runner according to claim 1 buffers feeding structure, it is characterised in that：Described buffering boss is most
It is a flat segments at major diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734779.3A CN107310107A (en) | 2017-08-24 | 2017-08-24 | Valve needle of hot runner buffers feeding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710734779.3A CN107310107A (en) | 2017-08-24 | 2017-08-24 | Valve needle of hot runner buffers feeding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107310107A true CN107310107A (en) | 2017-11-03 |
Family
ID=60177423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710734779.3A Pending CN107310107A (en) | 2017-08-24 | 2017-08-24 | Valve needle of hot runner buffers feeding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107310107A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501155A (en) * | 2019-01-09 | 2019-03-22 | 柳道万和(苏州)热流道***有限公司 | Hot mouth component, hot runner system and its needle |
| CN109895327A (en) * | 2019-03-20 | 2019-06-18 | 深圳市东方聚成科技有限公司 | A kind of encapsulating mould and injecting method with into glue Buffer Unit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202045831U (en) * | 2011-05-19 | 2011-11-23 | 圣万提注塑工业（苏州）有限公司 | Hydraulic cylinder for hot runner system |
| CN106994767A (en) * | 2017-05-05 | 2017-08-01 | 浙江思纳克热流道科技有限公司 | Carry the needle structure of guide-localization |
-
2017
- 2017-08-24 CN CN201710734779.3A patent/CN107310107A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202045831U (en) * | 2011-05-19 | 2011-11-23 | 圣万提注塑工业（苏州）有限公司 | Hydraulic cylinder for hot runner system |
| CN106994767A (en) * | 2017-05-05 | 2017-08-01 | 浙江思纳克热流道科技有限公司 | Carry the needle structure of guide-localization |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501155A (en) * | 2019-01-09 | 2019-03-22 | 柳道万和(苏州)热流道***有限公司 | Hot mouth component, hot runner system and its needle |
| CN109895327A (en) * | 2019-03-20 | 2019-06-18 | 深圳市东方聚成科技有限公司 | A kind of encapsulating mould and injecting method with into glue Buffer Unit |
| CN109895327B (en) * | 2019-03-20 | 2023-07-18 | 深圳市东方聚成科技有限公司 | Packaging mold with glue feeding buffer assembly and injection method |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |
|
| RJ01 | Rejection of invention patent application after publication |