CN109501153A - A kind of injection-moulding nozzle and hot runner system - Google Patents
A kind of injection-moulding nozzle and hot runner system Download PDFInfo
- Publication number
- CN109501153A CN109501153A CN201811645636.6A CN201811645636A CN109501153A CN 109501153 A CN109501153 A CN 109501153A CN 201811645636 A CN201811645636 A CN 201811645636A CN 109501153 A CN109501153 A CN 109501153A
- Authority
- CN
- China
- Prior art keywords
- injection
- flange
- nozzle
- moulding nozzle
- moulding
- 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
- 238000001746 injection moulding Methods 0.000 title claims abstract description 85
- 229920003023 plastic Polymers 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 13
- 239000007924 injection Substances 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray 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
- B29C45/2737—Heating or cooling means therefor
Abstract
The invention discloses a kind of injection-moulding nozzle and hot runner system, are related to injection molding machine accessory technical field.The injection-moulding nozzle includes nozzle body and flange, it is internally provided with the runner for melt plastic cement circulation in nozzle body, nozzle body is fixed on flange, which further includes heater strip, helicla flute is provided on the outer surface of nozzle body, heater strip is twist arranged in helicla flute.Heater strip is twist arranged on the outer surface of injection-moulding nozzle, Temperature Distribution in the runner of injection-moulding nozzle can be made not allow more evenly, after formed product to be also easy to produce the injection defects such as cold burden trace, improve the quality of injecting products.In addition to this, the more uniform plastic material for being also possible to prevent molten condition of Temperature Distribution flows back to adhere to the outside of injection-moulding nozzle, is able to extend the service life of injection-moulding nozzle.
Description
Technical field
The present invention relates to injection molding machine accessory technical field more particularly to a kind of injection-moulding nozzle and hot runner system.
Background technique
Injection molding refers at a certain temperature, by the way that the plastic material melted completely high pressure is injected die cavity, through cold
But after solidifying, the method that obtains molded product.
Injection-moulding nozzle is mounted on injection molding machine, by after melting machine melting, leading to original particular plastics raw material
The runner for crossing injection-moulding nozzle enters mouth, is then injected into die cavity, after carrying out shaping cooling, obtains molded product.In molten condition
Plastic material enter the runner of injection-moulding nozzle during, there are strict requirements to temperature, need to guarantee that plastic material exists
It is not solidified in the runner of injection-moulding nozzle.Existing injection-moulding nozzle does not have heating function generally, and the plastic material of molten condition exists
Heat scatters and disappears always during flowing through runner, so the defects of being also easy to produce cold burden trace after formed product.Minority is provided with heating
The injection-moulding nozzle of mechanism is in one circle heating coil of the bottom of injection-moulding nozzle setting mostly, and Temperature Distribution is not in the runner of injection-moulding nozzle
Uniformly, if temperature is too low, the plastic material of molten condition is be easy to cause to solidify in runner；If temperature is excessively high, it is easy to make to melt
The plastic material reflux for melting state, adheres to the outside of injection-moulding nozzle, influences the service life of injection-moulding nozzle.
Summary of the invention
The purpose of the present invention is to provide a kind of injection-moulding nozzle and hot runner system, can guarantee in the runner of injection-moulding nozzle
Uniformity of temperature profile improves product quality, extends the service life of injection-moulding nozzle.
As above design, the technical scheme adopted by the invention is that:
A kind of injection-moulding nozzle, including nozzle body and flange are internally provided in the nozzle body for melt plastic cement
The runner of circulation, the nozzle body are fixed on the flange, further include heater strip；The outer surface of the nozzle body
On be provided with helicla flute, the heater strip is twist arranged in the helicla flute.
As a kind of preferred embodiment of injection-moulding nozzle, the opening of the helicla flute is provided with closure part, the closure part
For the heater strip to be embedded in the nozzle body.
As a kind of preferred embodiment of injection-moulding nozzle, the closure part is the spiral shell formed after cooling using metal powders melt
Revolve shape structure.
As a kind of preferred embodiment of injection-moulding nozzle, the heater strip is connected with power supply line close to one end of the flange,
The power supply line passes through the flange and is connected to external power supply.
As a kind of preferred embodiment of injection-moulding nozzle, the part that the power supply line exposes the flange is provided with protective case.
As a kind of preferred embodiment of injection-moulding nozzle, welding button is additionally provided on the flange, the welding button is welded in
On the flange, the protection is set on the welding and buckles, and the power supply line sequentially passes through the flange, welding button
With the protective case, and external power supply is connected.
As a kind of preferred embodiment of injection-moulding nozzle, the nozzle body is connected with temperature-sensitive far from one end of the flange
The other end of line, the temp.-sensing wire is connected with temperature controller, and the temperature controller is electrically connected with the power supply line.
As a kind of preferred embodiment of injection-moulding nozzle, the nozzle body is welded on the flange.
As a kind of preferred embodiment of injection-moulding nozzle, stop pin is provided on the flange.
A kind of hot runner system, runner and institute including sprue and above-mentioned injection-moulding nozzle, inside the injection-moulding nozzle
Sprue is stated to be connected.
Beneficial effects of the present invention:
The present invention provides a kind of injection-moulding nozzle, is provided with helicla flute on the outer surface of the injection-moulding nozzle, sets in helicla flute
It is equipped with heater strip.Heater strip is twist arranged on the outer surface of injection-moulding nozzle, can make warm in the runner of injection-moulding nozzle
Degree is more evenly distributed, and does not allow to be also easy to produce the injection defects such as cold burden trace after formed product, improves the quality of injecting products.Except this it
Outside, the more uniform plastic material reflux for being also possible to prevent molten condition of Temperature Distribution is to adhere to the outside of injection-moulding nozzle, energy
Enough extend the service life of injection-moulding nozzle.
Detailed description of the invention
It, below will be to required use in description of the embodiment of the present invention in order to illustrate more clearly of technical solution of the present invention
Attached drawing be briefly described.
Fig. 1 is the structural schematic diagram of injection-moulding nozzle provided by the invention；
Fig. 2 is the explosive view of injection-moulding nozzle provided by the invention；
Fig. 3 is the longitdinal cross-section diagram of nozzle body provided by the invention；
Fig. 4 is the axonometric drawing of hot runner system provided by the invention；
Fig. 5 is the longitdinal cross-section diagram of hot runner system provided by the invention.
In figure:
1, nozzle body；11, runner；12, mouth；
2, heater strip；3, flange；
4, power supply line；41, protective case；42, welding button；
5, main filling mouth；51, sprue；52, runner.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
In conjunction with attached drawing and pass through specific embodiment to further illustrate the technical scheme of the present invention.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing and it is not all.
As shown in Figure 1-Figure 3, the present embodiment provides a kind of injection-moulding nozzle, which includes nozzle body 1 and flange
3, it is internally provided with the runner 11 for melt plastic cement circulation in nozzle body 1, nozzle body 1 is fixed on flange 3.It should
Injection-moulding nozzle further includes heater strip 2, and helicla flute is provided on the outer surface of nozzle body 1, and spiral shell is twist arranged in heater strip 2
In spin slot.Heater strip 2 is twist arranged on the outer surface of injection-moulding nozzle, the temperature in the runner 11 of injection-moulding nozzle can be made
Degree is more evenly distributed, and does not allow to be also easy to produce the injection defects such as cold burden trace after formed product, improves the quality of injecting products.
Specifically, can be in the screw pitch of the spiral heater strip 2 of 1 surface of nozzle body setting it is equal, can also be with
Unequal spacing is arranged according to actual needs.In the present embodiment, on nozzle body 1 on the position of injection mold cavity, spiral shape
Heater strip 2 screw pitch it is smaller, can guarantee in this way flow into injection mold cavity inside melt plastic cement temperature；In nozzle body 1
It is also smaller with the screw pitch of the junction of flange 3, spiral heater strip 2, the temperature at flange 3 can be improved；In addition, heating
Screw pitch of the silk 2 at the intermediate position of nozzle body 1 is larger.By the way that the arrangement mode of reasonable heater strip 2 is arranged, can not only reach
It is effectively heat to runner 11, makes the rate of temperature change of entire injection-moulding nozzle less than 15%, heater strip can also be saved
2, it economizes on resources.
Further, the opening of helicla flute is provided with closure part, for heater strip 2 to be embedded in nozzle body 1.Specifically
Ground, the closure part are the helical structure formed after cooling using metal powders melt.The specific set-up mode of heater strip 2 are as follows:
First heater strip 2 is arranged in the helicla flute on nozzle body 1, metal powder then is set in the opening of helicla flute, then
Heating metal powder makes to form closure part after its melting is cooling, so that heater strip 2 is embedded to inside nozzle body 1.Utilize gold
Belonging to powder welding will be arranged inside the embedment nozzle body 1 of heater strip 2, can guarantee service life and the safety of heater strip 2, reduce heat
Loss, propose highly thermally conductive efficiency.Welded using metal powder is that one kind can be improved productivity and not make welding point
The effective means that can be deteriorated can also reduce solder flux consumption.It certainly, in other embodiments, can also be in the table of nozzle body 1
Surface cover sets one layer of preferable protective cover of heat-proof quality, can also reduce the loss of heat, guarantees service life and the safety of heater strip 2.
And the set-up mode that spiral heater strip 2 is embedded in nozzle body 1 can be used by other.In the present embodiment, golden
Category powder is nickel powder.
Further, heater strip 2 is connected with power supply line 4 close to one end of flange 3, and power supply line 4 passes through flange 3 and external electrical
Source connection provides energy for heater strip 2.The part that power supply line 4 exposes flange 3 is provided with protective case 41.Outside power supply line 4
Setting protective case 41 can protect power supply line 4 and heater strip 2, isolation external moisture, greasy dirt etc., and external moisture, greasy dirt may
Heater strip 2 and power supply line 4 are caused to damage.
Further, welding button 42 is additionally provided on flange 3, welding button 42 is welded on flange 3, and the fixation of protective case 41 is set
It sets on welding button 42, power supply line 4 sequentially passes through flange 3, welding button 42 and protective case 41, and connects external power supply.In this reality
It applies in example, protective case 41 and welding button 42 are threadedly coupled, and one in protective case 41 and welding button 42 is provided with internal screw thread, another
A to be provided with external screw thread, threaded connection has the advantages that connection is reliable, convenient for disassembly and assembly.Certainly, in other embodiments, protective case
41 and welding button 42 can also be clamping, and other can be realized protective case 41 and welding detain mode that 42 are fixedly connected can be with
It is used.Specifically, welding button 42 is made of the non-conductor using heat, and heater strip 2 is included in 1 surface of nozzle body into spiral shell
First heater strip of rotation shape setting and the second heater strip being set in inside welding button 42, in the present embodiment, the second heater strip
Resistance less than the first heater strip resistance, therefore, the second heater strip generate heat it is smaller, heat can be effectively avoided in this way
Amount is gathered in the junction of heater strip 2 Yu power supply line 4, avoids the damage of power supply line 4.In order to realize earth leakage protective, protecting
It is additionally provided with earth leakage protective device between sheath 41 and power supply line 4, when there is leaky in injection-moulding nozzle, earth leakage protective device
It can be with moment by dump, to guarantee the safety of the person and equipment.
Further, nozzle body 1 is welded on flange 3 one entirety of formation, flange 3 be internally provided with through-hole and with stream
Road 11 is connected to, and is facilitated in melt plastic cement flow nozzle ontology 1, and is also equipped with and is added in the connecting portion of nozzle body 1 and flange 3
Heated filament 2 can promote the thermal balance of entire injection-moulding nozzle.Nozzle body 1 and flange 3 are welded into an entirety, Ke Yibao
The assembly precision of injection-moulding nozzle and injection mold and the relative position of injection-moulding nozzle are demonstrate,proved, flange 3 is Packed for nozzle body 1
Effect, guarantees that the melt plastic cement of high pressure will not be leaked by nozzle body 1 and the junction of flange 3.In the process of injection molding machine work
In, it needs replacing, problematic injection-moulding nozzle can be removed if injection-moulding nozzle goes wrong, then by nozzle body 1 and method
The injection-moulding nozzle that orchid 3 is welded as a whole integrally is changed, and integral replacing injection-moulding nozzle can save nozzle body 1 and flange 3 is installed
Time, shorten injection molding machine downtime, improve processing efficiency.
Further, it is additionally provided with stop pin on flange 3, card compatible with stop pin is provided on injection mold
Slot, stop pin are connected in card slot, can to avoid actually injection molding production when the injection-moulding nozzle as caused by internal force in injection mould
It rotates in tool, to influence the quality of injecting products, while injection-moulding nozzle can also be effectively prevented and installed during installation
The mistake in direction.
Further, nozzle body 1 is connected with temp.-sensing wire, the other end and temperature controller of temp.-sensing wire far from one end of flange 3
It is connected, and temperature controller can control the on-off of power supply line 4.The temperature that heater strip 2 can heat is pre-set on temperature controller
Upper limit value and lower limit value, when the temperature that temp.-sensing wire detects be higher than upper limit value when, power supply line 4 disconnect, heater strip 2 stop plus
Heat；When the temperature that temp.-sensing wire detects is lower than lower limit value, power supply line 4 is connected to, the recovery heating again of heater strip 2.So circulation,
It can guarantee that the temperature in runner 11 within the scope of a stationary temperature, improves the quality of injecting products.Temp.-sensing wire it is specific
Set-up mode are as follows: in nozzle body 1 close to one end of injection mold cavity and perpendicular to the punching of 11 direction of runner, and it is inserted into temp.-sensing wire,
Temp.-sensing wire fixed ring is set outside temp.-sensing wire, keeps the fixation of temp.-sensing wire stronger, relative position will not change, detection temperature
It spends more accurate.
Further, as shown in fig. 4-5, injection-moulding nozzle is also connected with mouth 12 close to one end of injection mold cavity, enters
The plastic cement of melting in runner 11 is entered in injection mold cavity by mouth 12.The injection-moulding nozzle can be with height between 0-20mm
Mouth 12 is adapted, such as can be 2mm, 5mm, 8mm, 10mm, 12mm, 15mm, 18mm or 20mm.It is provided on mouth 12
External screw thread is provided with internal screw thread on injection-moulding nozzle, and injection-moulding nozzle is threadedly coupled with mouth 12, is convenient for changing use.Injection molding spray
The height dimension of mouth can be adjusted within the scope of 68mm-308mm, and according to the demand of existing injection mold, which is sprayed
Mouth be sized to 80mm, 100mm, 120mm, 140mm, 160mm, 180mm, 200mm, 220mm, 240mm, 260mm,
This 12 different grades of 280mm and 300mm are adapted to current various injection molds.
The present embodiment also provides a kind of hot runner system, which includes main filling mouth 5 and multiple above-mentioned injection moldings
Nozzle, main filling mouth 5 are internally provided with sprue 51, are provided with runner 52, sprue between main filling mouth 5 and multiple injection-moulding nozzles
51, runner 52 is connected to the runner 11 of injection-moulding nozzle, and the plastic cement of melting enters from sprue 51, is divided at runner 52
It is respectively enterd after stream in the runner 11 of each injection-moulding nozzle.The runner 11 of sprue 51, runner 52 and injection-moulding nozzle processes essence
Degree is high, surface is smooth, and the plastic cement of melting can be made to flow smooth equilibrium, in flow process, is not detained in sprue 51, divides
Inside the runner 11 of runner 52 and injection-moulding nozzle, easy cleaning, and it is able to extend the service life of the hot runner system.
Embodiment of above only elaborates that the basic principles and features of the invention, the present invention are not limited by above embodiment
System, without departing from the spirit and scope of the present invention, the invention also has various changes and changes, and these changes and changes are all
It falls into scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (10)
1. a kind of injection-moulding nozzle, comprising: nozzle body (1) and flange (3),
It is internally provided with the runner (11) for melt plastic cement circulation in the nozzle body (1), the nozzle body (1) is fixed
It is arranged on the flange (3),
It is characterized by further comprising: heater strip (2)；
Helicla flute is provided on the outer surface of the nozzle body (1), the spiral is twist arranged in the heater strip (2)
In slot.
2. injection-moulding nozzle according to claim 1, which is characterized in that the opening of the helicla flute is provided with closure part,
The closure part is used to for the heater strip (2) being embedded in the nozzle body (1).
3. injection-moulding nozzle according to claim 2, which is characterized in that the closure part is cooling using metal powders melt
The helical structure formed afterwards.
4. injection-moulding nozzle according to claim 1, which is characterized in that the one of the heater strip (2) close the flange (3)
End is connected with power supply line (4), and the power supply line (4) passes through the flange (3) and is connected to external power supply.
5. injection-moulding nozzle according to claim 4, which is characterized in that the power supply line (4) exposes the portion of the flange (3)
Set up separately and is equipped with protective case (41).
6. injection-moulding nozzle according to claim 5, which is characterized in that welding button (42) is additionally provided on the flange (3),
The welding button (42) is welded on the flange (3), and protective case (41) setting is on welding button (42), the electricity
Source line (4) sequentially passes through the flange (3), the welding buckles (42) and the protective case (41), and connects external power supply.
7. injection-moulding nozzle according to claim 4, which is characterized in that the nozzle body (1) is far from the flange (3)
One end is connected with temp.-sensing wire, and the other end of the temp.-sensing wire is connected with temperature controller, and the temperature controller is electrically connected with the power supply line (4)
It connects.
8. injection-moulding nozzle according to claim 1, which is characterized in that the nozzle body (1) is welded in the flange (3)
On.
9. injection-moulding nozzle according to claim 1, which is characterized in that be provided with stop pin on the flange (3).
10. a kind of hot runner system, including sprue (51), which is characterized in that further include described in any one of claim 1-9
Injection-moulding nozzle, the runner (11) inside the injection-moulding nozzle is connected with the sprue (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645636.6A CN109501153A (en) | 2018-12-30 | 2018-12-30 | A kind of injection-moulding nozzle and hot runner system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645636.6A CN109501153A (en) | 2018-12-30 | 2018-12-30 | A kind of injection-moulding nozzle and hot runner system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109501153A true CN109501153A (en) | 2019-03-22 |
Family
ID=65755890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645636.6A Pending CN109501153A (en) | 2018-12-30 | 2018-12-30 | A kind of injection-moulding nozzle and hot runner system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109501153A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113172836A (en) * | 2021-02-09 | 2021-07-27 | 黄爱松 | Novel injection molding machine nozzle of high pressure self-filtering type |
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|---|---|---|---|---|
| US20090014439A1 (en) * | 2006-03-03 | 2009-01-15 | Ji-Hee Kim | Non-Contact High-Frequency Induction Heating Apparatus for Plastic Mold and Injection Nozzle Thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113172836A (en) * | 2021-02-09 | 2021-07-27 | 黄爱松 | Novel injection molding machine nozzle of high pressure self-filtering type |
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Application publication date: 20190322 |