CN103464754A - Injection moulding nozzle - Google Patents
Injection moulding nozzle Download PDFInfo
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- CN103464754A CN103464754A CN2013103749370A CN201310374937A CN103464754A CN 103464754 A CN103464754 A CN 103464754A CN 2013103749370 A CN2013103749370 A CN 2013103749370A CN 201310374937 A CN201310374937 A CN 201310374937A CN 103464754 A CN103464754 A CN 103464754A
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- nozzle body
- heating coil
- electrical heating
- heat
- passage
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Abstract
The invention relates to an injection moulding nozzle which comprises a nozzle body, a first heating device and a second heating device. The nozzle body is provided with a passage and an injection outlet, the first heating device can uniformly transmit heat energy from the tail of the nozzle body to the middle of the same, and the second heating device is used for uniformly transmitting heat energy from the end portion of the nozzle body to the middle of the same. Uniform heat distribution inside the injection moulding nozzle is realized, so that feed flowability is guaranteed, short injection generated by condensation due to the fact that feed is heated in a nonuniform manner is avoided, and quality of moulded blanks is guaranteed.
Description
Technical field
The present invention relates to a kind of injection nozzle, relating in particular to a kind of its internal heat can equally distributed nozzle.
Background technology
Metal injection moulding (Metal Injection Molding, be called for short MIM) be a kind of Novel powder metallurgy forming technique, can improve to greatest extent the content of metallic and remove bonding agent fully and make into parison densified in sintering process subsequently.Its production process is: metal dust+bonding agent → mixing → injection moulding → degreasing → sintering → post processing; Injection molding purpose is zero defect, the evengranular MIM molding blank that obtains required form, at first granular feeding is heated to certain high temperature and makes it to 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 from die cavity to obtain MIM and become parison; In this process, if it is improper to control, easily produce various defects, wherein temperature is a key factor that produces defect, because nozzle inside diameter is little, grows, the feeding thermal conductivity is better, easily cooling in nozzle, make cooled viscosity larger, affected the mobility of feeding, produce short notes, cause die cavity not fill up feeding fully and make into parison and produce defect.
Existing nozzle is provided with heater, to guarantee the mobility of feeding, but the heat skewness of existing nozzle interior, feeding is when arriving nozzle-end, because end is to contact with icy mould, therefore, the feeding of nozzle-end is easily cooling, easily causes feeding to stop up; In addition, existing nozzle interior middle part is subject to the effect of heater, and the middle part heat is higher, cause feeding can not be in runner thermally equivalent, affected the performance of feeding, thereby greatly affected the quality of base substrate.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the injection nozzle of uniform heat distribution in a kind of simple in structure, passage is provided.
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 be by heat energy from the described nozzle body afterbody first heater that section evenly transmits wherein; And secondary heating mechanism, for by heat energy by described nozzle body end wherein section evenly transmit.
In a preferred embodiment of the present invention, further comprise and also being provided with for reducing to the heat abstractor of described nozzle body middle part transferring heat.
In a preferred embodiment of the present invention, further comprise that described first heater comprises that being arranged on described nozzle body inside is the first electrical heating coil that ladder distributes, described the first electrical heating coil that is positioned at described nozzle body afterbody is pressed close to described passage, is positioned at the described first electrical heating coil at described nozzle body middle part away from described passage.
In a preferred embodiment of the present invention, further comprise that described secondary heating mechanism comprises that being arranged on described nozzle body inside is the second electrical heating coil that ladder distributes, described the second electrical heating coil that is positioned at described nozzle body end is pressed close to described passage, is positioned at the described second electrical heating coil at described nozzle body middle part away from described passage.
In a preferred embodiment of the present invention, further comprise that described heat abstractor is arranged between described first heater and secondary heating mechanism and contacts with secondary heating mechanism with first heater.
In a preferred embodiment of the present invention, further comprise that described heat abstractor comprises 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 that further comprises described nozzle body is 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 has guaranteed the mobility of feeding, avoids feeding to produce short notes because of the inequality condensation of being heated, and has guaranteed to become the quality of parison.
The 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, the 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.
The specific embodiment
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, basic structure of the present invention only is described in a schematic way, so it only shows the formation relevant with the present invention.
As depicted in figs. 1 and 2, a kind of injection molded nozzle, comprise the nozzle body 10 with injection canal 11 and injection outlet 12, and its inside is provided with can be by heat energy from nozzle body 10 afterbodys 15 first heater 20 that section evenly transmits wherein; Also be provided with secondary heating mechanism 30, for by heat energy by nozzle body 10 ends 16 wherein section evenly transmit; In nozzle body 10, also be provided with for reducing the heat abstractor 40 to nozzle body 10 middle part transferring heats.
Heat energy can be comprised to being arranged on nozzle body 10 inside is the first electrical heating coil 20 that ladder distributes from nozzle body 10 afterbodys 15 first heater 20 that section evenly transmits wherein in the present invention, and the first electrical heating coil 21 that is positioned at nozzle body 10 afterbodys is pressed close to injection canal 11, be positioned at the first electrical heating coil 21 at nozzle body 10 middle parts away from injection canal 11; Secondary heating mechanism 30 comprises that being arranged on nozzle body 10 inside is the second electrical heating coil 31 that ladder distributes equally, same, the the second electrical heating coil 31 that is positioned at nozzle body 10 ends is pressed close to injection canal 11, is positioned at the second electrical heating coil 31 at nozzle body 10 middle parts away from injection canal 11.
For making stepped injection canal 11 outer walls that are distributed in of the first electrical heating coil 21 and the second electrical heating coil 31, the outer wall of injection canal 11 all can be arranged to descending step 17 to afterbody 15 and end 16 respectively from section wherein, the first electrical heating coil 21 and the second electrical heating coil 31 are wrapped on step 17.
For the heat that the electrical heating coil is produced can be uniformly distributed in nozzle body, the outer wall of nozzle body 10 is set to dismountable shell 13, between shell 13 and step 17, it is the cavity of hollow, the heat part that the electrical heating coil produces distributes by shell 13, a part convection current in cavity, mix, can not cause amount of localized heat higher; Also be provided with through hole 14 on shell 13, power line can be electrically connected to and carry out work with the electrical heating coil by through hole 14.
The invention has the beneficial effects as follows:
1, the outer wall setting at injection canal is the electrical heating coil that ladder distributes, 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, prevent feeding in afterbody and end precooling and coolingly result in blockage, short notes, 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, caused passage to be heated inhomogeneous, and the distance between the electrical heating coil of stairstepping and passage does not wait, 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 of the heat at middle part and end or afterbody very nearly the same, can guarantee the uniform heat distribution on passage, guaranteed the mobility of feeding,
2, at the nozzle body middle part, heat abstractor is set, the heat transmitted to middle part with less electrical heating coil, 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 that heat abstractor can prevent that the middle part of passage is overheated and the performance that affects feeding;
3, form cavity between shell and step, be convenient to heat convection current in cavity that heat abstractor gives out, to mix, guarantee that passage is heated evenly.
Above foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related personnel can, in the scope that does not depart from this invention technological thought, carry out various change and modification fully.The technical scope of this invention is not limited to the content on specification, must determine technical scope according to the claim scope.
Claims (7)
1. an injection molded nozzle, comprise the nozzle body with passage and injection outlet, it is characterized in that: being provided with can be by heat energy from the described nozzle body afterbody first heater that section evenly transmits wherein; And secondary heating mechanism, for by heat energy by described nozzle body end wherein section evenly transmit.
2. a kind of injection molded nozzle according to claim 1, is characterized in that: also be provided with for reducing to the heat abstractor of described nozzle body middle part transferring heat.
3. a kind of injection molded nozzle according to claim 2, it is characterized in that: described first heater comprises that being arranged on described nozzle body inside is the first electrical heating coil that ladder distributes, described the first electrical heating coil that is positioned at described nozzle body afterbody is pressed close to described passage, is positioned at the described first electrical heating coil at described nozzle body middle part away from described passage.
4. a kind of injection molded nozzle according to claim 3, it is characterized in that: described secondary heating mechanism comprises that being arranged on described nozzle body inside is the second electrical heating coil that ladder distributes, described the second electrical heating coil that is positioned at described nozzle body end is pressed close to described passage, is positioned at the described second electrical heating coil at described nozzle body middle part away from described passage.
5. a kind of injection molded nozzle according to claim 4 is characterized in that: described heat abstractor is arranged between described first heater and secondary heating mechanism and contacts with secondary heating mechanism with first heater.
6. a kind of injection molded nozzle according to claim 5, it is characterized in that: described heat abstractor comprises the heat dissipating ring be threaded with described channel outer wall, described heat dissipating ring is circumferentially with several fins.
7. a kind of injection molded nozzle according to claim 6, it 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 true CN103464754A (en) | 2013-12-25 |
| CN103464754B CN103464754B (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN103464754B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103464754B (en) | 2016-03-09 |
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