CN103538208A - Open injection hole type hot runner injection mold device - Google Patents
Open injection hole type hot runner injection mold device Download PDFInfo
- Publication number
- CN103538208A CN103538208A CN201310548418.1A CN201310548418A CN103538208A CN 103538208 A CN103538208 A CN 103538208A CN 201310548418 A CN201310548418 A CN 201310548418A CN 103538208 A CN103538208 A CN 103538208A
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- China
- Prior art keywords
- injection hole
- nozzle
- mold device
- open
- injection
- 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.)
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- 238000002347 injection Methods 0.000 title claims abstract description 107
- 239000007924 injection Substances 0.000 title claims abstract description 107
- 239000011347 resin Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000005491 wire drawing Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- B29C45/278—Nozzle tips
Abstract
The invention discloses an open injection hole type hot runner injection mould device which comprises a movable mold, a fixed mold, a mold cavity, an injection hole, a molten resin path, a nozzle and a nozzle tip, wherein the fixed mold is arranged above the movable mold; the mold cavity is formed by the movable mold and the fixed mold together; the injection hole is formed above the mold cavity; the nozzle is arranged in the fixed mold; the nozzle is internally provided with the molten resin path which is coaxial with the central axis of the nozzle; the nozzle tip is arranged in front of the nozzle and is connected with the injection hole. Therefore, the open injection hole type hot runner injection mold device has the advantages of being high in reliability, compact in structure, good in adaptability and free of a projection part and the phenomenon of wire drawing, ensuring high product accuracy, being free from a flow mark and a weld line and simple in processing process, simplifying the subsequent technology and the like, and has wide market prospect in the field of mould equipment.
Description
Technical field
The present invention relates to injection mold apparatus field, particularly relate to a kind of open injection hole formula hot-runner injection mold device.
Background technology
Hot runner plastic injection mould is divided into according to injection hole kind what is called " the open injection moulding shape of the mouth as one speaks " injection mold apparatus that injection hole open and close type injection mold apparatus and injection hole are being opened always.Above-mentioned open injection hole formula injection mold apparatus is more simple in structure than injection hole open and close type injection mold apparatus, so be used for the moulding of small sized product.
As an example of this open injection moulding shape of the mouth as one speaks injection mold apparatus, patent is described below.
[look-ahead technique document]
[patent documentation]
The open injection hole formula injection mold apparatus of describing in note patent documentation 1 on (patent documentation 1) KR10-2010-0120794 A as shown in Figures 1 and 2, possess the die cavity (103) forming between cover half (101) and dynamic model (102), the inner insertion of upper note cover half (101) is provided with the nozzle (105) that has molten resin path (105a).And the leading section of nozzle (105), be the terminal part of nozzle tip (106) has been inserted into the front end face of injection hole (104), therefore formed the molten resin inlet of uniform gap (G) between outer peripheral face as shown in Figure 2 and injection hole (104) inwall.High-temperature fusion resin passes through after the molten resin path (105a) of nozzle (105) and the molten resin path (106a) of nozzle tip (106), by the molten resin inlet forming between above-mentioned injection hole (104) inwall and nozzle tip (106) outer peripheral face, is injected and is filled in die cavity (103).
It is consistent that the front end (106b) of the nozzle tip (106) of common open injection hole formula injection mold apparatus as implied above and injection hole front end face (104a is equivalent to the die joint of mould) are that substance is arranged.When the hot-runner injection mold device that utilization possesses this nozzle tip structure carrys out injection mo(u)lding, injection-molded article (110) as shown in Figure 3, according near the viscosity of molten resin injection hole (104) and the difference of setting rate, form molten resin that injection hole protuberance (111) as shown in Figure 3 or appearance do not solidify and near injection hole, form thin nemaline what is called ' wire drawing ' (112) phenomenon.
This injection-molded article is in order to remove injection hole protuberance (111) that outer surface protrudes and ' wire drawing ' (112) with other assembling products.The removal need of work of injection hole protuberance (111) one by one manual operations completes.The problems such as elongated and expense increase of working time have been caused.And while removing injection hole protuberance (111), the careless words of operator can produce defective products.
Summary of the invention
The present invention is in order to solve the problem of above-mentioned common open injection hole formula injection mold apparatus, utilize the nozzle tip of back-off structure, while removing the injection-molded article that the injection hole of injection-molded article takes out from mould during mould die sinking (type is opened) after injection mo(u)lding, do not have protuberance or wire drawing phenomenon to occur; Slotting portion and injection hole are provided with gap, and slotting portion is provided with less neck, improve Resin Flow, prevent the bad manufacture substandard products of resin flows; Be provided with divergent contour spigot surface, prevent resin surface conflict.Have that reliability is high, compact conformation, adaptability be good, there is no protuberance and wire drawing phenomenon, Product Precision is high, flow trace and weld line, process is simple, simplifies the advantages such as subsequent technique, has market prospects widely in die apparatus field simultaneously.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of open injection hole formula hot-runner injection mold device is provided, comprise: dynamic model, cover half, die cavity, injection hole, molten resin path, nozzle and nozzle tip, dynamic model top is provided with cover half, dynamic model and cover half form die cavity jointly, die cavity top is provided with injection hole, in cover half, be provided with nozzle, in nozzle, be provided with the molten resin path coaxial with nozzle centre axis, nozzle the place ahead is provided with nozzle tip, nozzle tip is connected with injection hole, the maximum outside diameter of said nozzle point is less than the minimum diameter of injection hole, and nozzle tip is inserted die cavity certain depth.
In a preferred embodiment of the present invention, described nozzle tip front end is provided with neck and slotting portion, and slotting portion is arranged on neck below, and the spacing between the inwall of described slotting portion and injection hole minimum diameter is 0.1-0.5mm.
In a preferred embodiment of the present invention, the external diameter of described neck is less than the external diameter of slotting portion.
In a preferred embodiment of the present invention, described slotting portion possesses the downward conical outer peripheral face that above-mentioned injection hole diminishes gradually to die cavity inside diameter.
In a preferred embodiment of the present invention, the conical outer peripheral face of described slotting portion is provided with a plurality of grooves and equidistantly arranges at a certain distance.
In a preferred embodiment of the present invention, described slotting portion is being provided with to the spigot surface of horizontal direction diffusion orient near injection hole.
In a preferred embodiment of the present invention, it is depth of cavity 5.0% that described slotting portion inserts depth of cavity.
In a preferred embodiment of the present invention, described nozzle tip is made with carbide alloy material sinter molding or heat-resisting alloy steel machining.
The invention has the beneficial effects as follows: the open injection hole formula of the present invention hot-runner injection mold device, utilize the nozzle tip of back-off structure, while removing the injection-molded article that the injection hole of injection-molded article takes out from mould during mould die sinking (type is opened) after injection mo(u)lding, do not have protuberance or wire drawing phenomenon to occur; Slotting portion and injection hole are provided with gap, and slotting portion is provided with less neck, improve Resin Flow, prevent the bad manufacture substandard products of resin flows; Be provided with divergent contour spigot surface, prevent resin surface conflict.Have that reliability is high, compact conformation, adaptability be good, there is no protuberance and wire drawing phenomenon, Product Precision is high, flow trace and weld line, process is simple, simplifies the advantages such as subsequent technique, has market prospects widely in die apparatus field simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also according to these accompanying drawings, obtain other accompanying drawing, wherein:
Fig. 1 is the assembling sectional view of general open injection hole formula injection mold apparatus;
Fig. 2 is that details drawing amplifies in the A portion of Fig. 1;
Fig. 3 is the example of injection-molded article of the general open injection hole formula injection mold apparatus moulding of Fig. 1;
Fig. 4 is according to the present invention, possesses the assembling sectional view of the open injection moulding shape of the mouth as one speaks hot-runner injection mold device that has the nozzle tip of back-off structure;
Fig. 5 a to Fig. 5 c is the amplification details drawing of B in Fig. 4, and illustrated view of stage is pressed the process of injection moulding oral area slotting by the slotting portion of nozzle tip;
Fig. 5 a is that molten resin is injected into the schematic diagram of die cavity internal state by injection hole,
Fig. 5 b is that molten resin is filled into die cavity and after moulding, and the dynamic model of downside is separated and while forming die opening state from the cover half of upside, the view of back-off portion slotting injection moulding oral area;
Fig. 5 c be in Fig. 5 b injection moulding oral area by the part enlarged drawing of the injection-molded article of slotting;
Fig. 6 is the view of other embodiment of the present invention, is corresponding diagram 5a view;
In accompanying drawing, the mark of each parts is as follows: 10, cover half, 11, moving film, 12, injection hole, 13, die cavity, 20, nozzle, 21, molten resin path, 22, nozzle tip, 30, slotting portion, 31, neck, 32, spigot surface, 38, conical outer peripheral face, 39, groove, 40, products formed, 41, back-off.
The specific embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
A kind of open injection hole formula hot-runner injection mold device, comprise: dynamic model 11, cover half 10, die cavity 13, injection hole 12, molten resin path 21, nozzle 20 and nozzle tip 25, dynamic model 11 tops are provided with cover half 10, the common die cavity 13 that forms of dynamic model 11 and cover half 10, die cavity 13 tops are provided with injection hole 12, in cover half 10, be provided with nozzle 20, in nozzle 20, be provided with the molten resin path 21 coaxial with nozzle centre axis, nozzle 20 the place aheads are provided with nozzle tip 25, nozzle tip 25 is connected with injection hole 12, the maximum outside diameter of said nozzle point (Do1) is less than the minimum diameter of injection hole (Di0), and nozzle tip 25 is inserted die cavity 13 certain depths.
Described nozzle tip 25 front ends are provided with neck 31 and slotting portion 30, and slotting portion 30 is arranged on neck 31 belows, and the spacing between the inwall of described slotting portion 30 and injection hole 12 minimum diameters is 0.1-0.5mm, the mobility of resin while guaranteeing injection moulding.
The external diameter of described neck 31 is less than the external diameter of slotting portion 30, and the mobility of resin while guaranteeing injection moulding can prevent that the formed product of the bad generation of resin flows is bad during the high material of injection mo(u)lding viscosity.
Described slotting portion possesses the downward conical outer peripheral face that above-mentioned injection hole diminishes gradually to die cavity inside diameter, and molten resin is flowed in die cavity more glibly.
The conical outer peripheral face of described slotting portion is provided with a plurality of grooves and equidistantly arranges at a certain distance, has increased the injection rate of molten resin in die cavity, therefore can allow molten resin flow in die cavity more glibly.
Described slotting portion, being provided with to the spigot surface of horizontal direction diffusion orient near injection hole, prevents that resin surface conflict from causing flow cracks and weld line.
It is depth of cavity 5.0% that described slotting portion inserts depth of cavity, the minimized in size of slotting portion when making to remove the injection hole protuberance of shaped article.
Described nozzle tip is made with carbide alloy material sinter molding or heat-resisting alloy steel machining, can obtain good result of use, guarantees life of product and injection-molded finished quality.
The beneficial effect of the open injection hole formula of the present invention hot-runner injection mold device is:
One, utilize the nozzle tip of back-off structure, while removing the injection-molded article that the injection hole of injection-molded article takes out from mould during mould die sinking (type is opened) after injection mo(u)lding, do not have protuberance or wire drawing phenomenon to occur;
Two, slotting portion and injection hole are provided with gap, and slotting portion is provided with less neck, improve Resin Flow, prevent the bad manufacture substandard products of resin flows;
Three, be provided with divergent contour spigot surface, prevent resin surface conflict;
Four, compare with existing equipment, the present invention has that reliability is high, compact conformation, adaptability are good, there is no protuberance and wire drawing phenomenon, Product Precision is high, trace and weld line do not flow, process is simple, simplifies the advantages such as subsequent technique, has market prospects widely in die apparatus field 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 to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (8)
1. an open injection hole formula hot-runner injection mold device, it is characterized in that, comprise: dynamic model, cover half, die cavity, injection hole, molten resin path, nozzle and nozzle tip, dynamic model top is provided with cover half, dynamic model and cover half form die cavity jointly, die cavity top is provided with injection hole, in cover half, be provided with nozzle, in nozzle, be provided with the molten resin path coaxial with nozzle centre axis, nozzle the place ahead is provided with nozzle tip, nozzle tip is connected with injection hole, the maximum outside diameter of said nozzle point is less than the minimum diameter of injection hole, and nozzle tip is inserted die cavity certain depth.
2. open injection hole formula hot-runner injection mold device according to claim 1, it is characterized in that, described nozzle tip front end is provided with neck and slotting portion, and slotting portion is arranged on neck below, and the spacing between the inwall of described slotting portion and injection hole minimum diameter is 0.1-0.5mm.
3. open injection hole formula hot-runner injection mold device according to claim 2, is characterized in that, the external diameter of described neck is less than the external diameter of slotting portion.
4. open injection hole formula hot-runner injection mold device according to claim 2, is characterized in that, described slotting portion possesses the downward conical outer peripheral face that above-mentioned injection hole diminishes gradually to die cavity inside diameter.
5. open injection hole formula hot-runner injection mold device according to claim 4, is characterized in that, the conical outer peripheral face of described slotting portion is provided with a plurality of grooves and equidistantly arranges at a certain distance.
6. open injection hole formula hot-runner injection mold device according to claim 3, is characterized in that, described slotting portion is being provided with to the spigot surface of horizontal direction diffusion orient near injection hole.
7. open injection hole formula hot-runner injection mold device according to claim 1, is characterized in that, it is depth of cavity 5.0% that described slotting portion inserts depth of cavity.
8. open injection hole formula hot-runner injection mold device according to claim 2, is characterized in that, described nozzle tip is made with carbide alloy material sinter molding or heat-resisting alloy steel machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548418.1A CN103538208B (en) | 2013-11-08 | 2013-11-08 | Open injection hole type hot runner injection mould device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310548418.1A CN103538208B (en) | 2013-11-08 | 2013-11-08 | Open injection hole type hot runner injection mould device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103538208A true CN103538208A (en) | 2014-01-29 |
| CN103538208B CN103538208B (en) | 2016-08-17 |
Family
ID=49962246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310548418.1A Active CN103538208B (en) | 2013-11-08 | 2013-11-08 | Open injection hole type hot runner injection mould device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103538208B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110733160A (en) * | 2018-07-20 | 2020-01-31 | 精工爱普生株式会社 | Injection molding apparatus and injection molding method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3145831A1 (en) * | 1981-11-16 | 1983-05-26 | Schleicher Gmbh & Co Relais-Werke Kg, 1000 Berlin | Injection-moulding machine serving for the production of technical mouldings in particular |
| JPH0232825A (en) * | 1988-07-22 | 1990-02-02 | Matsushita Electric Works Ltd | Hot runner nozzle for injection molding |
| WO1996005042A1 (en) * | 1994-08-16 | 1996-02-22 | Kona Corporation | Improved bushing tip for injection molding apparatus |
| US5501594A (en) * | 1994-02-16 | 1996-03-26 | Eastman Kodak Company | Apparatus for forming a thermoplastic body |
| WO2001098053A1 (en) * | 2000-06-16 | 2001-12-27 | D-M-E Company | Injection molding hot runner nozzle with removable seal |
| US20080131552A1 (en) * | 2006-11-30 | 2008-06-05 | Husky Injection Molding Systems Ltd. | Nozzle Sleeve for an Injection Molding Apparatus |
| CN203527795U (en) * | 2013-11-08 | 2014-04-09 | 哈希斯热流道科技（苏州）有限公司 | Hot runner injection molding mold device with opened injection molding hole |
-
2013
- 2013-11-08 CN CN201310548418.1A patent/CN103538208B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3145831A1 (en) * | 1981-11-16 | 1983-05-26 | Schleicher Gmbh & Co Relais-Werke Kg, 1000 Berlin | Injection-moulding machine serving for the production of technical mouldings in particular |
| JPH0232825A (en) * | 1988-07-22 | 1990-02-02 | Matsushita Electric Works Ltd | Hot runner nozzle for injection molding |
| US5501594A (en) * | 1994-02-16 | 1996-03-26 | Eastman Kodak Company | Apparatus for forming a thermoplastic body |
| WO1996005042A1 (en) * | 1994-08-16 | 1996-02-22 | Kona Corporation | Improved bushing tip for injection molding apparatus |
| WO2001098053A1 (en) * | 2000-06-16 | 2001-12-27 | D-M-E Company | Injection molding hot runner nozzle with removable seal |
| US20080131552A1 (en) * | 2006-11-30 | 2008-06-05 | Husky Injection Molding Systems Ltd. | Nozzle Sleeve for an Injection Molding Apparatus |
| CN203527795U (en) * | 2013-11-08 | 2014-04-09 | 哈希斯热流道科技（苏州）有限公司 | Hot runner injection molding mold device with opened injection molding hole |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110733160A (en) * | 2018-07-20 | 2020-01-31 | 精工爱普生株式会社 | Injection molding apparatus and injection molding method |
| CN110733160B (en) * | 2018-07-20 | 2021-09-14 | 精工爱普生株式会社 | Injection molding apparatus and injection molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103538208B (en) | 2016-08-17 |
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