CN105172040A - Nozzle assembly suitable for PET injection molding - Google Patents
Nozzle assembly suitable for PET injection molding Download PDFInfo
- Publication number
- CN105172040A CN105172040A CN201510633699.XA CN201510633699A CN105172040A CN 105172040 A CN105172040 A CN 105172040A CN 201510633699 A CN201510633699 A CN 201510633699A CN 105172040 A CN105172040 A CN 105172040A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- pet
- injection molding
- passage
- 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.)
- Pending
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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
- B29C45/20—Injection nozzles
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- 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
- B29C45/72—Heating or cooling
- B29C45/74—Heating or cooling of the injection unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a nozzle assembly suitable for PET injection molding. The nozzle assembly suitable for PET injection molding comprises a nozzle connecting base and a nozzle. The nozzle is rotationally connected with the front end of the nozzle connecting base. A heating device is arranged on the peripheral wall of the nozzle. According to the nozzle assembly suitable for PET injection molding, the heating device is arranged on the peripheral wall of the nozzle, and therefore when PET material injection molding is performed, the position of a mold gate and the nozzle will keep a certain high temperature, water in the ambient environment of the gate is little, and the drying condition for injection molding is kept; and besides, before PET materials leave the nozzle, the PET materials are not prone to hardening. The nozzle assembly suitable for PET injection molding is simple and easy to operate and can be used for a PET injection molding machine.
Description
Technical field
The present invention relates to plastics injection molding art, particularly a kind of nozzle assembly.
Background technology
Injection machine comprises injection moulding platform and frame two parts, and described frame has a plate, middle plate and tailgate, and they are as the stabilizing tool of clamping injection mold; And injection moulding platform has injecting glue seat, injecting glue seat is connected with forward injection cylinder, injection cylinder front end is connected with nozzle assembly, is provided with screw rod in injection cylinder, when plastic grain is thrown in incident packing element posterior segment time, screw rod does not stop to rotate, drive plastic grain extruding forward, simultaneously injection cylinder heating, under screw rod revolves the multiple action that crowded, injection cylinder heats, plastic grain finally becomes molten condition, penetrates forward enter in the middle of injection mold from nozzle assembly.Nozzle assembly comprise be located at foremost, nozzle that location mid-shaft has the injection passage pierced and the nozzle Connection Block that is connected with nozzle, nozzle Connection Block simultaneously also can with being connected foremost of injection cylinder, described injection passage capable of being is communicated with injection cylinder inside, and molten plastic can be squeezed into nozzle and then penetrate.
For the PC plastics that injection moulding is general, common injection machine can easily be dealt with.If but conventional PC injection machine were used for injection moulding PET, then would often occur that PET gate materials breaks in the situation of mould gate position, then cast gate is blocked blocking, need to take apart a die the lump tapping and block.The appearance of this situation is that PET more easily makes moist and turns cold because PET is variant compared to its material character of PC, when nozzle removes cast gate, and moisture absorption sclerosis of just having lowered the temperature rapidly.Now general solution, is dry PET raw material in advance, remains on plastics aridity when injection as far as possible, and strengthens injection power, ensures that as far as possible many PET can penetrate at gate location, conveniently strikes material.But obviously increase production cost like this.
Summary of the invention
The technical problem to be solved in the present invention is: provide one to be applicable to the injection molding nozzle assembly of PET, and when it can solve injection machine injection moulding PET, gate location easily makes moist the problem of hardening and blocking.
The solution that the present invention solves its technical problem is:
One is applicable to the injection molding nozzle assembly of PET, and comprise nozzle Connection Block and nozzle, the front end of described nozzle and nozzle Connection Block spins, and the periphery wall of described nozzle is provided with heater.
As the further improvement of technique scheme, described heater comprises several resistance heating sheets, and described resistance heating sheet is uniform round the periphery wall of nozzle.
As the further improvement of technique scheme, described resistance heating sheet is connected with the power electric of peripheral hardware by bundle conductor, and the periphery of described nozzle Connection Block is provided with the locating button described bundle conductor being fastened location.
As the further improvement of technique scheme, described nozzle axis has injection passage, described injection passage leads directly to and reducing to the back-end from nozzle front end, injection passage comprises that be positioned at front end, isometrical first paragraph passage, and be positioned at rear end, be also isometrical but the diameter three section passage larger than first paragraph passage, and as the second segment passage of reducing transition between described first paragraph passage and the 3rd section of passage, the radially projecting of described heater in nozzle drops into the position of second segment passage.
As the further improvement of technique scheme, described nozzle is 38CrMoAl material.
The invention has the beneficial effects as follows: the present invention establishes heater at nozzle perisporium, like this when carrying out PET material injection moulding, mould gate position and nozzle itself will maintain certain high-temperature, make the moisture content of cast gate surrounding environment less, keep the drying condition of injection moulding, also allow PET material not easily harden before leaving nozzle in addition.The present invention is simple and easy to do, and can be used on PET injection machine.
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 used required in describing embodiment is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, instead of whole embodiment, and those skilled in the art, under the prerequisite not paying creative work, can also obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is sectional structure schematic diagram of the present invention.
Detailed description of the invention
Clear, complete description is carried out, to understand object of the present invention, characteristic sum effect fully below with reference to embodiment and the accompanying drawing technique effect to design of the present invention, concrete structure and generation.Obviously; described embodiment is a part of embodiment of the present invention, instead of whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art obtains under the prerequisite not paying creative work, all belong to the scope of protection of the invention.In addition, all connection/annexations mentioned in literary composition, not singly refer to that component directly connects, and refer to and according to concrete performance, can connect auxiliary by adding or reducing, and form more excellent draw bail.Each technical characteristic in the invention, can combination of interactions under the prerequisite of not conflicting conflict.
With reference to Fig. 1, one is applicable to the injection molding nozzle assembly of PET, comprises nozzle Connection Block 2 and nozzle 1, and described nozzle 1 spins with the front end of nozzle Connection Block 2, and the periphery wall of described nozzle 1 is provided with heater.
Be further used as preferred embodiment, described heater comprises several resistance heating sheets 11, and described resistance heating sheet 11 is uniform round the periphery wall of nozzle 1.Uniform resistance heating sheet 11 can make the even heat sent.
Be further used as preferred embodiment, described resistance heating sheet 11 is connected with the power electric of peripheral hardware by bundle conductor, and the periphery of described nozzle Connection Block 2 is provided with the locating button 21 described bundle conductor being fastened location.Described locating button 21 can allow bundle conductor not tilt and disorderly twine, and does not affect overall structure.Certainly, bundle conductor is be covered with heat-barrier material certainly, and the heating watt of this heat insulation bundle conductor on injection drum outer wall also has.
Be further used as preferred embodiment, described nozzle 1 axis has injection passage, described injection passage leads directly to and reducing to the back-end from nozzle 1 front end, injection passage comprises that be positioned at front end, isometrical first paragraph passage, and be positioned at rear end, be also isometrical but the diameter three section passage larger than first paragraph passage, and as the second segment passage of reducing transition between described first paragraph passage and the 3rd section of passage, the radially projecting of described heater in nozzle 1 drops into the position of second segment passage.Preferably this position is because in Injection Molding process, and second channel is the channel section that turbulent flow easily occurs plastic liquid, and plastic crystal is easily tied a knot granulating, therefore allows thermal source closest to second segment passage, and the mobility that can as far as possible keep plastics excellent, makes injection moulding smooth and easy.
Be further used as preferred embodiment, described nozzle 1 is 38CrMoAl material.38CrMoAl, as nitrated steel, has stronger hardness, is the excellent material making nozzle.
Above better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (5)
1. be applicable to the injection molding nozzle assembly of PET, comprise nozzle Connection Block (2) and nozzle (1), described nozzle (1) spins with the front end of nozzle Connection Block (2), it is characterized in that: the periphery wall of described nozzle (1) is provided with heater.
2. be according to claim 1ly applicable to the injection molding nozzle assembly of PET, it is characterized in that: described heater comprises several resistance heating sheets (11), described resistance heating sheet (11) is uniform round the periphery wall of nozzle (1).
3. be according to claim 2ly applicable to the injection molding nozzle assembly of PET, it is characterized in that: described resistance heating sheet (11) is connected with the power electric of peripheral hardware by bundle conductor, the periphery of described nozzle Connection Block (2) is provided with the locating button (21) described bundle conductor being fastened location.
4. according to any one of claims 1 to 3, be applicable to the injection molding nozzle assembly of PET, it is characterized in that: described nozzle (1) axis has injection passage, described injection passage leads directly to and reducing to the back-end from nozzle (1) front end, injection passage comprises and is positioned at front end, isometrical first paragraph passage, and be positioned at rear end, also be isometrical but the diameter three section passage larger than first paragraph passage, and as the second segment passage of reducing transition between described first paragraph passage and the 3rd section of passage, the radially projecting of described heater in nozzle (1) drops into the position of second segment passage.
5. be according to claim 4ly applicable to the injection molding nozzle assembly of PET, it is characterized in that: described nozzle (1) is 38CrMoAl material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633699.XA CN105172040A (en) | 2015-09-28 | 2015-09-28 | Nozzle assembly suitable for PET injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510633699.XA CN105172040A (en) | 2015-09-28 | 2015-09-28 | Nozzle assembly suitable for PET injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105172040A true CN105172040A (en) | 2015-12-23 |
Family
ID=54894698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510633699.XA Pending CN105172040A (en) | 2015-09-28 | 2015-09-28 | Nozzle assembly suitable for PET injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105172040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626239A (en) * | 2017-01-12 | 2017-05-10 | 柳州开宇塑胶机械有限公司 | Quick nozzle of injection molding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2379221A2 (en) * | 1977-01-31 | 1978-08-25 | Acim Jouanin | Twin thermocouple control of heater input of injection moulding nozzle - providing better heat balance than single sensor control |
| JPS5839428A (en) * | 1981-09-03 | 1983-03-08 | Jiyuuou Shoji Kk | Apparatus for molding plastic |
| CN204525946U (en) * | 2015-04-08 | 2015-08-05 | 陈启明 | A kind of anti-plastic sets type injection machine nozzle |
-
2015
- 2015-09-28 CN CN201510633699.XA patent/CN105172040A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2379221A2 (en) * | 1977-01-31 | 1978-08-25 | Acim Jouanin | Twin thermocouple control of heater input of injection moulding nozzle - providing better heat balance than single sensor control |
| JPS5839428A (en) * | 1981-09-03 | 1983-03-08 | Jiyuuou Shoji Kk | Apparatus for molding plastic |
| CN204525946U (en) * | 2015-04-08 | 2015-08-05 | 陈启明 | A kind of anti-plastic sets type injection machine nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626239A (en) * | 2017-01-12 | 2017-05-10 | 柳州开宇塑胶机械有限公司 | Quick nozzle of injection molding machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151223 |