CN109130100A - A kind of fire-bar and hot flow path and cold runner structure using this kind of fire-bar - Google Patents
A kind of fire-bar and hot flow path and cold runner structure using this kind of fire-bar Download PDFInfo
- Publication number
- CN109130100A CN109130100A CN201811272565.XA CN201811272565A CN109130100A CN 109130100 A CN109130100 A CN 109130100A CN 201811272565 A CN201811272565 A CN 201811272565A CN 109130100 A CN109130100 A CN 109130100A
- Authority
- CN
- China
- Prior art keywords
- fire
- metal capillary
- heater strip
- hot
- temperature control
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 claims abstract description 28
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012360 testing 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
- B29C45/2737—Heating or cooling means therefor
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Resistance Heating (AREA)
Abstract
The invention discloses a kind of fire-bars, heater strip including metal capillary and between metal capillary, magnesia powder is filled in metal capillary, heater strip is located at the both ends outside metal capillary equipped with electrode, heater strip doubling and forms loop in metal capillary, heater strip includes successively adjacent heating wire and low heat conductive filament, about symmetrical to eclectic line, metal capillary corresponds to forms bringing-up section and thermally conductive section to heater strip at the position of heating wire and low heat conductive filament by the heating wire and the low heat conductive filament after doubling；A kind of hot runner structure, including hot mouth and hot flow path template are wound with heating coil in hot mouth, and heating coil is made of fire-bar；Temperature control tank is arranged in a kind of cold runner structure, including cold runner template, cold flowing mould channel plate surface, and the temperature control tank is embedded with temperature control item, and temperature control item is made of fire-bar；Its technical point is, can adjust bringing-up section and thermally conductive segment length ratio as needed, meets hot flow path, cold runner injection molding demand.
Description
Technical field
The present invention relates to injection mold hot runners and cold runner technique field, more specifically, it relates to a kind of fire-bar
And the hot flow path and cold runner structure of this kind of fire-bar of application.
Background technique
In hot runner mould industry, the fire-bar of hot mouth is all whole heating, is then wound into heating coil, for modeling
Glue material forming temperature scope is than more sensitive, bad adjusting temperature, the high easy charing of temperature, and temperature is low not to show glue,
As shown in figure 5, fire-bar is whole heating, it is mounted in hot mouth 4, is put into mold, due to mouth after being then wound into heating coil 41
Point and hot flow path template 5(flow distribution plate) temperature importing, 4 upper and lower ends temperature of hot mouth is relatively intermediate low, and intermediate ends temperature is higher than
Set temperature, to have charing phenomenon；As shown in fig. 6, fire-bar is packed into cold runner template in cold runner die industry
After in 6,6 bulk temperature of cold runner template is controlled by thermocouple, but since structure is complicated for cold runner template 6, it cannot be guaranteed that plus
Hot item is evenly heated it, so that it cannot be guaranteed that the temperature-difference of cold runner template 6 everywhere influences the later period within 10 DEG C
Product quality.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of fire-bar and application this kind to heat
The hot flow path and cold runner structure of item have the characteristics that Segmented heating, guarantee that hot flow path hot mouth and cold runner template are heated
Uniformly.
To achieve the above object, the present invention provides the following technical scheme that
A kind of fire-bar, the heater strip including metal capillary and between metal capillary, the metal capillary are built-in
It is filled with magnesia powder, the heater strip is located at the both ends outside metal capillary equipped with electrode, and the heater strip is in metal capillary
Interior doubling simultaneously forms loop, and the heater strip includes successively adjacent heating wire and low heat conductive filament, and the heater strip is after doubling
About symmetrical to eclectic line, the metal capillary corresponds to heating wire and low heat conductive filament by the heating wire and the low heat conductive filament
Bringing-up section and thermally conductive section are formed at position.
Preferably, the heating wire is made of CrNi2080 material.
Preferably, the low heat conductive filament is made of pure nickel material.
Preferably, the heating wire and the low heat conductive filament pass through welded connecting.
Preferably, the metal capillary is made of pure nickel.
A kind of hot runner structure, including hot mouth and hot flow path template, are wound with heating coil in the hot mouth, the heating coil by
Above-mentioned fire-bar is made, the bringing-up section rotating around hot mouth both ends and be located at hot flow path template in, the thermally conductive section
In the middle part of hot mouth.
Temperature control tank, the temperature control tank is arranged in a kind of cold runner structure, including cold runner template, the cold flowing mould channel plate surface
It is embedded with temperature control item, the temperature control item is made of above-mentioned fire-bar.
Compared with prior art, the invention has the following advantages:
1, the fire-bar being welded by heater strip (CrNi2080) and low heat conductive filament (pure nickel), in energization, due to
Pure nickel heating conduction is poor, and heater strip and low heat conductive filament have the apparent temperature difference, can customize heating according to different working environments
Bringing-up section and thermally conductive section of position and length realize the effect of homogeneous heating in whole runner；
2, the heating coil in hot mouth has fire-bar to be coiled into, and both ends are thermally conductive section of bringing-up section interposition, is measured by multiple temperature real
It tests, adjusts the length ratio of bringing-up section with thermally conductive section, ensure that hot mouth medium temperature is consistent with both ends temperature, it is not too high；Heat
One section in runner template is also thermally conductive section, and it is excessively high not will lead to temperature in hot runner mould plate；
3, temperature control tank is arranged in cold flowing mould channel plate surface, and the temperature control item in temperature control tank is made of fire-bar, is measured by multiple temperature,
The length for adjusting bringing-up section with thermally conductive section keeps the temperature difference in cold runner template at each position within the required range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fire-bar in the present embodiment；
Fig. 2 is the enlarged drawing of part A in Fig. 1；
Fig. 3 is the hot runner structure schematic diagram of fire-bar in application drawing 1；
Fig. 4 is the cold runner structure schematic diagram of fire-bar in application drawing 1；
Fig. 5 is the hot runner structure schematic diagram in background technique；
Fig. 6 is the cold runner structure schematic diagram in background technique.
In figure: 1, metal capillary；11, bringing-up section；12, thermally conductive section；2, heater strip；21, electrode；22, heating wire；23,
Low heat conductive filament；3, magnesia powder；4, hot mouth；41, heating coil；5, hot flow path template；6, cold runner template；61, temperature control tank；611,
Temperature control item.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of fire-bar, referring to Fig.1 with 2 comprising metal capillary 1 and the heater strip between metal capillary 1
2, metal capillary 1 is made of pure nickel material；It is filled with magnesia powder 3 in metal capillary 1, there is insulating heat-conductive effect；Add
Heated filament 2 is located at the both ends outside metal capillary 1 equipped with electrode 21, and for connecting temperature control box, heater strip 2 is in metal capillary 1
Doubling simultaneously forms loop.
Heater strip 2 includes successively adjacent heating wire 22 and low heat conductive filament 23, and heating wire 22 is made of CrNi2080 material,
It can generate heat under energization, low heat conductive filament 23 is made of pure nickel material, and thermal conductivity is poor, and temperature is lower with respect to heating wire 22, hair
Heated filament 22 and low heat conductive filament 23 pass through welded connecting.
Heating wire 22 and low heat conductive filament 23 are about symmetrical to eclectic line after doubling for heater strip 2, so that metal capillary 1 is right
It answers and forms bringing-up section 11 and thermally conductive section 12 at the position of heating wire 22 and low heat conductive filament 23；According to different working environments, customization
Fire-bar bringing-up section 11 and thermally conductive section 12 of position and length ratio, control the heating effect of different location.
A kind of hot runner structure, referring to Fig. 3, including hot mouth 4 and hot flow path template 5, hot flow path template 5 is flow distribution plate；Heat
Heating coil 41 is wound on mouth 4, heating coil 41 is made of above-mentioned fire-bar, and bringing-up section 11 is located at 4 both ends of hot mouth, and is located at heat
In runner template 5, thermally conductive section 12 is located at 4 middle part of hot mouth and adjusts bringing-up section 11 and thermally conductive section 12 by multiple temperature measurement experiment
Length ratio, ensure that 4 medium temperature of hot mouth is consistent with both ends temperature, to will not have charing phenomenon；In hot flow path template 5
One section also be thermally conductive section 12, it is excessively high not will lead to temperature in hot runner mould plate 5.
A kind of cold runner structure, referring to Fig. 4, including cold runner template 6, cold runner template 6 is flow distribution plate；Cold runner template
Temperature control tank 61 is arranged in 6 surfaces, and temperature control tank 61 is embedded with temperature control item 611, and temperature control item 611 is made of above-mentioned fire-bar, by more
Secondary temperature measurement adjusts length and position of the bringing-up section 11 with thermally conductive section 12, makes the temperature difference in cold runner template 6 at each position
It keeps within the required range.
The present embodiment is only explanation of the invention, is not limitation of the present invention, and those skilled in the art exist
It can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as in the present invention
Scope of the claims in all by the protection of Patent Law.
Claims (7)
1. a kind of fire-bar, the heater strip including metal capillary and between metal capillary, in the metal capillary
It is filled with magnesia powder, it is characterised in that: the heater strip is located at the both ends outside metal capillary equipped with electrode, the heater strip
Doubling and form loop in metal capillary, the heater strip includes successively adjacent heating wire and low heat conductive filament, it is described plus
About symmetrical to eclectic line, the metal capillary corresponds to heating wire to heated filament by the heating wire and the low heat conductive filament after doubling
With formation bringing-up section at the position of low heat conductive filament and thermally conductive section.
2. fire-bar according to claim 1, it is characterised in that: the heating wire is made of CrNi2080 material.
3. fire-bar according to claim 1, it is characterised in that: the low heat conductive filament is made of pure nickel material.
4. fire-bar according to claim 1, it is characterised in that: the heating wire and the low heat conductive filament are connected by welding
It connects.
5. fire-bar according to claim 1, it is characterised in that: the metal capillary is made of pure nickel.
6. a kind of hot runner structure, including hot mouth and hot flow path template, it is characterised in that: be wound with heating coil, institute in the hot mouth
It states heating coil to be made of the described in any item fire-bars of claim 1-5, the bringing-up section is rotating around in hot mouth both ends and position
In in hot flow path template, described thermally conductive section is located in the middle part of hot mouth.
7. a kind of cold runner structure, including cold runner template, it is characterised in that: temperature control tank is arranged in the cold flowing mould channel plate surface,
The temperature control tank is embedded with temperature control item, and the temperature control item is made of the described in any item fire-bars of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272565.XA CN109130100B (en) | 2018-10-30 | 2018-10-30 | Heating strip and hot runner and cold runner structure applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272565.XA CN109130100B (en) | 2018-10-30 | 2018-10-30 | Heating strip and hot runner and cold runner structure applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109130100A true CN109130100A (en) | 2019-01-04 |
| CN109130100B CN109130100B (en) | 2021-06-01 |
Family
ID=64806356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811272565.XA Active CN109130100B (en) | 2018-10-30 | 2018-10-30 | Heating strip and hot runner and cold runner structure applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109130100B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204887502U (en) * | 2015-08-25 | 2015-12-16 | 重庆协美电气有限公司 | Single -ended officious announcement electric heating element that generates heat |
| CN106738670A (en) * | 2016-12-27 | 2017-05-31 | 铜陵市铜峰光电科技有限公司 | Many cave type hot flow paths that a kind of LED support injection mold is used |
| CN206596255U (en) * | 2017-03-10 | 2017-10-27 | 浙江春晖仪表股份有限公司 | A kind of multistage is distributed spiral cored wire armored heating cable |
| CN207146925U (en) * | 2017-08-19 | 2018-03-27 | 成都市联余精密机械有限公司 | The fire-bar installation wire casing of runner plate |
-
2018
- 2018-10-30 CN CN201811272565.XA patent/CN109130100B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204887502U (en) * | 2015-08-25 | 2015-12-16 | 重庆协美电气有限公司 | Single -ended officious announcement electric heating element that generates heat |
| CN106738670A (en) * | 2016-12-27 | 2017-05-31 | 铜陵市铜峰光电科技有限公司 | Many cave type hot flow paths that a kind of LED support injection mold is used |
| CN206596255U (en) * | 2017-03-10 | 2017-10-27 | 浙江春晖仪表股份有限公司 | A kind of multistage is distributed spiral cored wire armored heating cable |
| CN207146925U (en) * | 2017-08-19 | 2018-03-27 | 成都市联余精密机械有限公司 | The fire-bar installation wire casing of runner plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109130100B (en) | 2021-06-01 |
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