CN104097299A - Valve needle special for highlight surface - Google Patents
Valve needle special for highlight surface Download PDFInfo
- Publication number
- CN104097299A CN104097299A CN201410201756.2A CN201410201756A CN104097299A CN 104097299 A CN104097299 A CN 104097299A CN 201410201756 A CN201410201756 A CN 201410201756A CN 104097299 A CN104097299 A CN 104097299A
- Authority
- CN
- China
- Prior art keywords
- needle
- valve needle
- needle head
- head
- section
- 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
- 238000010992 reflux Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 abstract description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 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
Abstract
The invention discloses a valve needle special for a highlight surface. The valve needle comprises a valve needle main body and a conical valve needle head, wherein a backflow section is arranged on one section, close to the valve needle head, of the valve needle main body; and the diameter of the backflow section is smaller than the diameter of the valve needle main body. According to the utility model, the valve needle can prevent leaving white thin lines or sun-like print on a product in the injection molding, and can reduce the injection molding pressure.
Description
Technical field
The present invention relates to needle field, particularly relate to a kind of highlighted special needle.
Background technology
Existing needle is cylindrical, on needle, have feed chute, the gap of needle and hot mouth core cooperation place is too small, when needle sealing because needle feed chute is little, the cold plastics of needle head can not be return rapidly, when needle retreats while filling glue, the cold moulding material of needle head can be filled in product, can on product, leave Bai Si or the sun and print; Pressure when injection moulding is also very large, affects product quality.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of highlighted special needle, leaves Bai Si or the sun and print can prevent injection moulding time on product, and product surface quality is good, can reduce injection pressure simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of highlighted special needle is provided, comprises needle body and cone shape needle head; Described needle body is provided with reflux section near a section of needle head, and described reflux section diameter is less than the diameter of described needle body.
Preferably, on described needle head, have backflash, described backflash is uniformly distributed along needle head is circumferential.
Preferably, between described reflux section and needle head, be provided with transition inclined-plane.
The invention has the beneficial effects as follows: when the present invention can prevent injection moulding, on product, leave Bai Si or the sun and print, improve the quality of products.
Brief description of the drawings
Fig. 1 is the structural representation of needle in prior art;
Structural representation when Fig. 2 is a kind of highlighted special needle sealing state of the present invention;
Fig. 3 be shown in structural representation when a kind of highlighted special needle plastic emitting state;
In accompanying drawing, the mark of each parts is as follows: 1, needle body; 2, needle head; 3, hot mouth core; 4, reflux section.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Refer to Fig. 1 to Fig. 3, the embodiment of the present invention comprises:
A kind of highlighted special needle, comprises needle body 1 and cone shape needle head 2; Described highlighted special needle is arranged in the inner chamber of hot mouth core 3, needle body 1 and needle head 2 move axially in hot mouth core 3, described needle body 1 is provided with reflux section 4 near a section of needle head 2, described reflux section 4 diameters are less than the diameter of described needle body 4, on described needle head 2, have backflash, described backflash is uniformly distributed along needle head is circumferential, between described reflux section 4 and needle head 2, is provided with transition inclined-plane, and transition inclined-plane engages with backflash.Needle head 2 and hot mouth core 3 cooperation places, owing to being provided with backflash and reflux section 4, so gap is very large, when needle sealing, because needle reflux section diameter is little, the cold plastics of needle head can be return rapidly, when needle retreats while filling glue, the cold moulding material strip of needle head can be got back in TOP-TIP, when next filling, cold moulding material reheats in hot flow path, reinject in product, plastics temperature is consistent, so can not leave Bai Si or sun seal on product, can also reduce injection pressure, improve the quality of products simultaneously.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes description of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. a highlighted special needle, comprises needle body and cone shape needle head; It is characterized in that: described needle body is provided with reflux section near a section of needle head, and described reflux section diameter is less than the diameter of described needle body.
2. highlighted special needle of one according to claim 1, is characterized in that: on described needle head, have some backflashes, described backflash is uniformly distributed along needle head is circumferential.
3. highlighted special needle of one according to claim 1, is characterized in that: between described reflux section and needle head, be provided with transition inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201756.2A CN104097299A (en) | 2014-05-14 | 2014-05-14 | Valve needle special for highlight surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201756.2A CN104097299A (en) | 2014-05-14 | 2014-05-14 | Valve needle special for highlight surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104097299A true CN104097299A (en) | 2014-10-15 |
Family
ID=51666036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410201756.2A Pending CN104097299A (en) | 2014-05-14 | 2014-05-14 | Valve needle special for highlight surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104097299A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108735A (en) * | 1984-12-03 | 1986-05-10 | 赫里昂工厂两合公司 | Regulated valve |
| JPH10291235A (en) * | 1997-04-18 | 1998-11-04 | Toshiba Silicone Co Ltd | Nozzle for mold |
| CN1297398A (en) * | 1998-02-19 | 2001-05-30 | 哈斯基注模系统有限公司 | Valve gating apparatus and method for injection molding |
| CN201579950U (en) * | 2009-12-15 | 2010-09-15 | 深圳市米高科技有限公司 | Lateral-approaching hot-runner device |
-
2014
- 2014-05-14 CN CN201410201756.2A patent/CN104097299A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108735A (en) * | 1984-12-03 | 1986-05-10 | 赫里昂工厂两合公司 | Regulated valve |
| JPH10291235A (en) * | 1997-04-18 | 1998-11-04 | Toshiba Silicone Co Ltd | Nozzle for mold |
| CN1297398A (en) * | 1998-02-19 | 2001-05-30 | 哈斯基注模系统有限公司 | Valve gating apparatus and method for injection molding |
| CN201579950U (en) * | 2009-12-15 | 2010-09-15 | 深圳市米高科技有限公司 | Lateral-approaching hot-runner device |
Non-Patent Citations (1)
| Title |
|---|
| 张卫忠 等: "针阀式喷嘴及其在热流道注射模具中的应用", 《模具工业》, no. 7, 31 July 2002 (2002-07-31), pages 46 - 49 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203282688U (en) | Multi-head needle valve hot sprue for hot runner system | |
| CN204688609U (en) | There is the double-deck Raw material pail of scraper plate | |
| CN204095065U (en) | A kind of highlighted special needle | |
| CN104097299A (en) | Valve needle special for highlight surface | |
| WO2017102457A9 (en) | Injection molding device for manufacturing tubes having an undercut internal geometry, preferably an internal thread, and method for manufacturing tubes of said type | |
| CN203019652U (en) | Extrusion single pipe mold | |
| CN203726733U (en) | Novel mold runner structure | |
| CN204687260U (en) | A kind of leakproof injection heat of improvement is chewed | |
| CN202378244U (en) | Novel injection mould | |
| CN203542981U (en) | Anti-leakage injection molding head of vertical type injection molding machine | |
| CN204109286U (en) | A kind of exhaust structure being applied to plastic mould | |
| CN207696949U (en) | Novel diversion plate valve needle plug | |
| CN203974010U (en) | A kind of plastics moulding draw-wire machine | |
| CN204673963U (en) | A kind of Novel injection moulding machine penetrates platform accumulator storing glue sealing structure | |
| CN204688650U (en) | A kind of thread Packaging Bottle | |
| CN204622448U (en) | A kind of colour changing monoblock type sealing system | |
| CN203937118U (en) | Anti-wire drawing sprue bush | |
| CN204914147U (en) | Novel ceramic die | |
| CN203976983U (en) | A kind of plastic-wire drawing machine shower nozzle | |
| CN203267068U (en) | Injection molding nozzle | |
| CN202656421U (en) | Self-locking guide sleeve structure of hot runner valve needle | |
| CN203267117U (en) | Hot nozzle valve needle sleeve | |
| CN202065596U (en) | Secondary-formed injection pipe | |
| CN205148698U (en) | Resin mould | |
| CN204687254U (en) | A kind of injection mold for the production of car door inside opening spanner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141015 |