CN103464754B - A kind of injection molded nozzle - Google Patents
A kind of injection molded nozzle Download PDFInfo
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- CN103464754B CN103464754B CN201310374937.0A CN201310374937A CN103464754B CN 103464754 B CN103464754 B CN 103464754B CN 201310374937 A CN201310374937 A CN 201310374937A CN 103464754 B CN103464754 B CN 103464754B
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- nozzle body
- heating coil
- electrical heating
- heat
- injection molded
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Abstract
The present invention relates to a kind of injection molded nozzle, comprise the nozzle body with passage and injection outlet, being provided with can by heat energy from the described nozzle body afterbody first heater that evenly transmits of portion wherein; And secondary heating mechanism, for heat energy is evenly transmitted in portion wherein by described nozzle body end.Injection molded nozzle internal heat of the present invention is evenly distributed, and ensure that the mobility of feeding, and condensation produces short note because being heated inequality to avoid feeding, ensure that into the quality of parison.
Description
Technical field
The present invention relates to a kind of injection nozzle, particularly relating to its internal heat a kind of can equally distributed nozzle.
Background technology
Metal injection moulding (MetalInjectionMolding, be called for short MIM) be a kind of Novel powder metallurgy forming technique, the content of metallic can be improved to greatest extent and in sintering process subsequently, remove bonding agent completely and to make into parison densified.Its production process is: metal dust+bonding agent → mixing → injection moulding → degreasing → sintering → post processing; Injection molding object is the zero defect, the evengranular MIM molding blank that obtain required form, first granular feeding is heated to necessarily high temperature and makes it that there is mobility, then being injected in die cavity cools down obtains the base substrate with certain rigidity of required form, then it is taken out to obtain MIM and become parison from die cavity; In this process, if it is improper to control, the various defect of easy generation, wherein temperature is the key factor producing defect, grows because nozzle inside diameter is little, feeding thermal conductivity is better, easily cool in nozzle, make cooled viscosity comparatively large, have impact on the mobility of feeding, produce short note, cause die cavity can not fill up feeding completely and make into parison generation defect.
Existing nozzle is provided with heater, to guarantee the mobility of feeding, but the heat skewness of existing nozzle interior, feeding arrive nozzle-end time, because end is and icy contacting dies, therefore, the feeding of nozzle-end easily cools, and easily causes feeding to block; In addition, existing nozzle interior middle part is by the effect of heater, and middle part heat is higher, cause feeding can not in runner thermally equivalent, have impact on the performance of feeding, thus greatly have impact on the quality of base substrate.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide that a kind of structure is simple, the injection nozzle of uniform heat distribution in passage.
For achieving the above object, the technical solution used in the present invention is: a kind of injection molded nozzle, comprise the nozzle body with passage and injection outlet, it is characterized in that: being provided with can by heat energy from the described nozzle body afterbody first heater that evenly transmits of portion wherein; And secondary heating mechanism, for heat energy is evenly transmitted in portion wherein by described nozzle body end.
In a preferred embodiment of the present invention, comprise the heat abstractor be also provided with for reducing to transferring heat in the middle part of described nozzle body further.
In a preferred embodiment of the present invention, comprise described first heater further and comprise the first electrical heating coil being arranged on the distribution in ladder of described nozzle body inside, described passage pressed close to by the described first electrical heating coil being positioned at described nozzle body afterbody, is positioned at described first electrical heating coil in the middle part of described nozzle body away from described passage.
In a preferred embodiment of the present invention, comprise described secondary heating mechanism further and comprise the second electrical heating coil being arranged on the distribution in ladder of described nozzle body inside, described passage pressed close to by the described second electrical heating coil being positioned at described nozzle body end, is positioned at described second electrical heating coil in the middle part of described nozzle body away from described passage.
In a preferred embodiment of the present invention, comprise described heat abstractor further and be arranged on described first heater and contact with secondary heating mechanism with first heater with between secondary heating mechanism.
In a preferred embodiment of the present invention, comprise described heat abstractor further and comprise the heat dissipating ring be threaded with described channel outer wall, described heat dissipating ring is circumferentially with several fins.
In a preferred embodiment of the present invention, the outer wall comprising described nozzle body is further dismountable shell, and described shell is provided with through hole.
The invention solves the defect existed in background technology, injection molded nozzle internal heat of the present invention is evenly distributed, and ensure that the mobility of feeding, and condensation produces short note because being heated inequality to avoid feeding, ensure that into the quality of parison.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
Fig. 2 is the structural representation of heat abstractor in the present invention;
In figure: 10, nozzle body, 11, passage, 12, injection outlet, 13, shell, 14, through hole, 15, afterbody, 16, end, 20, first heater, the 21, first electrical heating coil, 30, secondary heating mechanism, 31, the second electrical heating coil, 40, heat abstractor, 41, heat dissipating ring, 42, fin.
Detailed description of the invention
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now, and these accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As depicted in figs. 1 and 2, a kind of injection molded nozzle, comprises the nozzle body 10 with injection canal 11 and injection outlet 12, and its inside is provided with can by heat energy from nozzle body 10 afterbody 15 first heater 20 that evenly transmits of portion wherein; Also be provided with secondary heating mechanism 30, for evenly being transmitted in portion wherein by nozzle body 10 end 16 by heat energy; The heat abstractor 40 for reducing to transferring heat in the middle part of nozzle body 10 is also provided with in nozzle body 10.
Heat energy can be comprised the first electrical heating coil 20 being arranged on the distribution in ladder of nozzle body 10 inside from nozzle body 10 afterbody 15 first heater 20 that portion evenly transmits wherein in the present invention, and injection canal 11 pressed close to by the first electrical heating coil 21 being positioned at nozzle body 10 afterbody, be positioned at the first electrical heating coil 21 in the middle part of nozzle body 10 away from injection canal 11; Secondary heating mechanism 30 comprises the second electrical heating coil 31 being arranged on the inner same distribution in ladder of nozzle body 10, same, injection canal 11 pressed close to by the second electrical heating coil 31 being positioned at nozzle body 10 end, is positioned at the second electrical heating coil 31 in the middle part of nozzle body 10 away from injection canal 11.
For making the first electrical heating coil 21 and the second electrical heating coil 31 is stepped is distributed in injection canal 11 outer wall, can by the outer wall of injection canal 11 from wherein portion respectively rearwardly 15 and end 16 descending step 17 is all set, the first electrical heating coil 21 and the second electrical heating coil 31 are wrapped on step 17.
Heat abstractor 40 in the present invention to be arranged between first heater 20 with secondary heating mechanism 30 and to contact with secondary heating mechanism 30 with first heater 20, and namely heat abstractor 40 is arranged on the middle part of nozzle body 10; As shown in Figure 2, heat abstractor 40 comprises the aluminum heat dissipating ring 41 be connected with injection canal 11 outer wall thread, and heat dissipating ring 41 is circumferentially with several aluminium fins 42.
The heat produced for making electrical heating coil can be uniformly distributed in nozzle body, the outer wall of nozzle body 10 is set to dismountable shell 13, it is the cavity of hollow between shell 13 and step 17, the heat part that electrical heating coil produces is distributed by shell 13, a part convection current in cavity, mix, amount of localized heat can not be caused higher; Shell 13 is also provided with through hole 14, and power line to be electrically connected with electrical heating coil by through hole 14 and to carry out work.
The invention has the beneficial effects as follows:
1, the electrical heating coil of the distribution in ladder is set at the outer wall of injection canal, and make the electrical heating coil of afterbody and end press close to passage, the electrical heating coil at middle part is away from passage, this design can make the passage of afterbody and end obtain more heat, prevents from feeding from cooling at afterbody and end precooling resulting in blockage, short note, the stacked system of the heat that the electrical heating coil of stairstepping and rectilinear electrical heating coil produce is different, traditional rectilinear electrical heating coil, the heat of two adjacent electrical heating coil peripheries is higher, the heat of the electrical heating coil periphery at two ends is less, passage has been caused to be heated uneven, and distance between the electrical heating coil of stairstepping and passage is not etc., heat is gathered to middle part gradually by afterbody or end, and the electrical heating coil at middle part is away from passage, gather to the heat at middle part and the heat of end or afterbody very nearly the same, the uniform heat distribution on passage can be guaranteed, ensure that the mobility of feeding,
2, heat abstractor is set in the middle part of nozzle body, with the heat that less electrical heating coil transmits to middle part, because heat is gathered to middle part by afterbody and end, the heat that middle part is gathered can get more and more, and arranges heat abstractor and the middle part of passage can be prevented overheated and the performance affecting feeding;
3, between shell and step, form cavity, be convenient to heat convection current in cavity that heat abstractor gives out, to mix, guarantee that passage is heated evenly.
Above according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, related personnel in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine technical scope according to right.
Claims (6)
1. an injection molded nozzle, comprises the nozzle body with passage and injection outlet, it is characterized in that: being provided with can by heat energy from the described nozzle body afterbody first heater that evenly transmits of portion wherein; And secondary heating mechanism, for heat energy is evenly transmitted in portion wherein by described nozzle body end; Described first heater comprises the first electrical heating coil being arranged on the distribution in ladder of described nozzle body inside, described passage pressed close to by the described first electrical heating coil being positioned at described nozzle body afterbody, is positioned at described first electrical heating coil in the middle part of described nozzle body away from described passage.
2. a kind of injection molded nozzle according to claim 1, is characterized in that: be also provided with the heat abstractor for reducing to transferring heat in the middle part of described nozzle body.
3. a kind of injection molded nozzle according to claim 2, it is characterized in that: described secondary heating mechanism comprises the second electrical heating coil being arranged on the distribution in ladder of described nozzle body inside, described passage pressed close to by the described second electrical heating coil being positioned at described nozzle body end, is positioned at described second electrical heating coil in the middle part of described nozzle body away from described passage.
4. a kind of injection molded nozzle according to claim 3, is characterized in that: described heat abstractor is arranged on described first heater and contacts with secondary heating mechanism with first heater with between secondary heating mechanism.
5. a kind of injection molded nozzle according to claim 4, is characterized in that: described heat abstractor comprises the heat dissipating ring be threaded with described channel outer wall, and described heat dissipating ring is circumferentially with several fins.
6. a kind of injection molded nozzle according to claim 5, is characterized in that: the outer wall of described nozzle body is dismountable shell, and described shell is provided with through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374937.0A CN103464754B (en) | 2013-08-26 | 2013-08-26 | A kind of injection molded nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310374937.0A CN103464754B (en) | 2013-08-26 | 2013-08-26 | A kind of injection molded nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103464754A CN103464754A (en) | 2013-12-25 |
| CN103464754B true CN103464754B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310374937.0A Active CN103464754B (en) | 2013-08-26 | 2013-08-26 | A kind of injection molded nozzle |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106493858A (en) * | 2016-12-04 | 2017-03-15 | 重庆中技万彩世界实业有限公司 | The processing unit (plant) of environmental protection brick |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5820900A (en) * | 1996-08-21 | 1998-10-13 | Mcgrevy; Alan N. | Heating device for an injection mold apparatus |
| JP2002079549A (en) * | 2000-09-05 | 2002-03-19 | Mitsubishi Materials Corp | Molding method and valve gate mold device used for molding method |
| CN1485195A (en) * | 2002-08-16 | 2004-03-31 | ����ʵҵ��ʽ���� | Shut-off nozzle with heating unit and cooling unit for hot runner systems of injection molding machines, and method of controlling the same |
| CN1960846A (en) * | 2004-04-07 | 2007-05-09 | 标准模具有限公司 | Modular injection nozzle having a thermal barrier |
| CN102343645A (en) * | 2010-08-03 | 2012-02-08 | 奥托门纳创新有限公司 | Injection moulding nozzle |
| CN203495228U (en) * | 2013-08-26 | 2014-03-26 | 苏州米莫金属科技有限公司 | Injection molding nozzle |
-
2013
- 2013-08-26 CN CN201310374937.0A patent/CN103464754B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5820900A (en) * | 1996-08-21 | 1998-10-13 | Mcgrevy; Alan N. | Heating device for an injection mold apparatus |
| JP2002079549A (en) * | 2000-09-05 | 2002-03-19 | Mitsubishi Materials Corp | Molding method and valve gate mold device used for molding method |
| CN1485195A (en) * | 2002-08-16 | 2004-03-31 | ����ʵҵ��ʽ���� | Shut-off nozzle with heating unit and cooling unit for hot runner systems of injection molding machines, and method of controlling the same |
| CN1960846A (en) * | 2004-04-07 | 2007-05-09 | 标准模具有限公司 | Modular injection nozzle having a thermal barrier |
| CN102343645A (en) * | 2010-08-03 | 2012-02-08 | 奥托门纳创新有限公司 | Injection moulding nozzle |
| CN203495228U (en) * | 2013-08-26 | 2014-03-26 | 苏州米莫金属科技有限公司 | Injection molding nozzle |
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| Publication number | Publication date |
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| CN103464754A (en) | 2013-12-25 |
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