CN101774255A - Retractable hot runner system - Google Patents

Retractable hot runner system Download PDF

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Publication number
CN101774255A
CN101774255A CN200910239007A CN200910239007A CN101774255A CN 101774255 A CN101774255 A CN 101774255A CN 200910239007 A CN200910239007 A CN 200910239007A CN 200910239007 A CN200910239007 A CN 200910239007A CN 101774255 A CN101774255 A CN 101774255A
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CN
China
Prior art keywords
hot
hot runner
described
retractable
characterized
Prior art date
Application number
CN200910239007A
Other languages
Chinese (zh)
Inventor
高成鹏
孙文华
Original Assignee
深圳市米高科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市米高科技有限公司 filed Critical 深圳市米高科技有限公司
Priority to CN200910239007A priority Critical patent/CN101774255A/en
Publication of CN101774255A publication Critical patent/CN101774255A/en

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Abstract

The invention discloses a retractable hot runner system. The system comprises a hot nozzle main body, a hot runner plate, a main nozzle and a driving device which is connected with the hot nozzle main body, wherein the hot nozzle main body is fixedly connected with the driving device, a hot runner hole on the hot nozzle main body is communicated with one end of a hole on the hot runner plate and the other end of the hole is communicated with a through hole on the main nozzle; the hot nozzle main body is provided with a first heating ring, a hot nozzle point and a hot nozzle gate bush and the hot nozzle gate bush is matched and fixed with the hot nozzle point and the hot nozzle main body; the hot runner plate is provided with a heating pipe and a support ring is arranged between the hot runner plate and a padding plate; and a second heating ring is wound outside the main nozzle. Compared with the prior art, the retractable hot runner system has the advantages that: the gate bush is only required to be matched with a die in position, so the die is simpler and the assembly and use of the whole hot runner system are not affected even if the processing precision on a die cavity is a little inaccurate; and meanwhile, the periphery of the gate bush contacts the die cavity exclusively, so thermal loss can be reduced.

Description

Retractable hot runner system

Technical field

The present invention relates to the hot flow path technical field, particularly a kind of retractable hot runner system.

Background technology

The hot flow path technology is as an advanced person's of thermoplastic injection molding technology, its principle is that the running gate system to mould heats, make plastic melt in runner, keep molten condition always, coagulate material to avoid in molding cycle, producing running gate system, be mouth of a river material, thereby the melt that is trapped in the TOP-TIP that makes can be injected into die cavity when injection moulding next time.

Existing TOP-TIP is that the hot nozzle assembling is cooperated with solid plate, by hot runner manifold and top clamping plate it is compressed, and guarantees that hot flow path can not produce Lou glue phenomenon in whole injection moulding process, and influences its normal use.This TOP-TIP mainly has the following disadvantages: 1, need the Mould Machining required precision height that cooperates with it, especially relatively large mould is if mold cavity deviation a little to some extent all influences the assembling and the use of whole TOP-TIP.Need a plurality of contact points when 2, TOP-TIP cooperates with mould, it is long-pending to increase TOP-TIP and mould contact surface, thereby makes the thermal loss on the TOP-TIP, has reduced the hot flow path temperature.Fixing when 3, sharp-tongued length of existing heat and position are common, when the sharp-tongued length of heat a little to some extent during deviation, can't adjust basically, thereby to TOP-TIP and mould quality of fit height, thereby need the increase difficulty of processing.4, installation and maintenance inconvenience.

Summary of the invention

The technical problem that the present invention mainly solves provides a kind of retractable hot runner system, and described retractable hot runner system requires low to mould, and the Mould Machining that cooperates with this system is simple, reduces the thermal loss of TOP-TIP, and is simultaneously convenient for installation and maintenance.

In order to address the above problem, the invention provides a kind of retractable hot runner system, this retractable hot runner system comprises: hot mouth body, hot runner manifold, main nozzle and the drive unit that is connected with described hot mouth body, wherein, hot flow path hole on the described hot mouth body is communicated with the Kong Yiduan on the hot runner manifold, and the other end in this hole is communicated with through hole on the main nozzle; Described hot mouth body is provided with the second heating circle, the sharp-tongued and hot mouth cast gate of heat department, and this hot mouth cast gate department cooperates with hot sharp-tongued and hot mouth body to be fixed; Described hot runner manifold is provided with heat-generating pipe, is provided with support ring between this hot runner manifold and backing plate; Described main nozzle outer felt is wound with the second heating circle.

Preferably, described drive unit comprises pneumatic shuttle or oil gear.

Preferably, be provided with stop pin between described backing plate and the hot runner manifold.

Preferably, the described first heating circle outside is arranged with first protective sleeve, and the described second heating circle outside is arranged with second protective sleeve.

Preferably, be provided with circular cambered surface around through hole one end face on the described main nozzle.

Preferably, be provided with sealing ring between described hot mouth body and the hot runner manifold.

Preferably, described sealing ring is red metal or aluminium.

Preferably, be provided with the pressure meson between described top clamping plate and the hot runner manifold.

Preferably, be arranged with cast gate department outside described heat is sharp-tongued, this cast gate department and hot sharp-tongued concentric position are provided with and are trumpet-shaped cast gate.

Preferably, the little 0.5mm-1.0mm of described cast gate department's gating proportion mould gate.

Retractable hot runner system of the present invention, can regulate the drive unit of hot mouth body position by being provided with, between the hot sharp-tongued and mold cavity on being arranged on this hot mouth body when gapped, can regulate by drive unit, make that described heat is sharp-tongued to be contacted with mold cavity is fine, thereby can reduce hot sharp-tongued processing request.When carrying out the injection moulding injection, the moving hot mouth body of pneumatic shuttle or oil gear moves forward, and cast gate department and mould are closely cooperated; When the injection moulding injection stopped, first pumpback sizing material reduced the remaining injection pressure in hot runner manifold and the hot mouth, drove hot mouth body by described pneumatic shuttle or oil gear then and moved backward, and make cast gate department and mold separation realize disconnected glue.

Compared with prior art, mould adds simply, and sealing cooperates and only to need cast gate department and mould cooperation position, and other positions can empty avoiding, has both made mold cavity produce deviation a little in machining accuracy, can not influence the assembling and the use of whole TOP-TIP.Around having only cast gate department, contact simultaneously, thereby can reduce the heat loss of TOP-TIP with mold cavity.

In hot mouth body and hot runner manifold cooperation place, the high-temperature wearable sealing ring can be prevented leak-stopping glue.The little 0.5mm-1.0mm of described cast gate department's gating proportion mould gate can prevent that sphere from can not influence hot sharp-tongued plastic emitting yet when cooperating dislocation.Be arranged with cast gate department outside described heat is sharp-tongued, this cast gate department and hot sharp-tongued concentric position are provided with and are trumpet-shaped cast gate, and convenient on the one hand disconnected glue prevents flowability sizing material cast gate curtain coating when the hot nozzle rollback is finished in injection moulding preferably on the other hand.

Requirement to the sharp-tongued length of heat reduces, because hot sharp-tongued front end cooperates with mould, even the sharp-tongued length of heat has deviation a little, also can compensate by regulating drive unit.Because TOP-TIP is when mounted, earlier hot runner manifold, main nozzle and accessory are installed on the backing plate, and fix top clamping plate and just be installed to the cover half die cavity from top clamping plate heat is sharp-tongued later on, thereby easy for installation.

Description of drawings

Fig. 1 is that retractable hot runner system embodiment of the present invention is along its center cross-sectional schematic;

Fig. 2 is that the A part-structure amplifies intention;

Fig. 3 is that hot mouth is along its center cross-sectional schematic;

Fig. 4 is that the B part-structure amplifies intention.

Below in conjunction with embodiment, and with reference to accompanying drawing, realization, functional characteristics and the advantage of the object of the invention is described further.

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the invention provides a kind of retractable hot runner system embodiment.

Described retractable hot runner system comprises: hot mouth body 14, hot runner manifold 6, main nozzle 10 and the drive unit 13 that is connected with described hot mouth body 14, wherein, hot flow path hole 140 on the described hot mouth body 14 is communicated with hole 60 1 ends on the hot runner manifold 6, and the other end in this hole 60 is communicated with through hole 100 on the main nozzle 10; Described hot mouth body 14 is provided with the first heating circle 19, heat sharp-tongued 21 and hot mouth cast gate department 20, and this hot mouth cast gate department 20 cooperates with hot sharp-tongued 21 and hot mouth body 14 to be fixed; Described hot runner manifold 6 is provided with heat-generating pipe 5, is provided with support ring 18 between this hot runner manifold 6 and backing plate 3; Described main nozzle 10 outer felt are wound with the second heating circle 11.

Specifically, described drive unit 13 comprises pneumatic shuttle or oil gear.Be provided with stop pin 17 between described backing plate 3 and the hot runner manifold 6.The described first heating circle 19 outsides are arranged with first protective sleeve 22, and the described second heating circle 11 outsides are arranged with second protective sleeve 12.Be provided with circular cambered surface around through hole 100 1 end faces on the described main nozzle 10, as shown in Figure 4.

Be provided with the sealing ring 16 of high temperature resistant material between described hot mouth body 14 and the hot runner manifold 6, the quantity of sealing ring 16 can be provided with as required.Preferably, described sealing ring 16 is red metal or aluminium.Be provided with pressure meson 7 between described top clamping plate 1 and the hot runner manifold 6.Described heat sharp-tongued 21 is outer to be arranged with hot mouth cast gate department 20, and this hot mouth cast gate department 20 and hot sharp-tongued 21 concentric positions are provided with and are trumpet-shaped cast gate 9.Described cast gate 9 is than the little 0.5mm-1.0mm of mould gate.

Retractable hot runner system of the present invention, by the drive unit 13 that can regulate hot mouth body 14 positions is set, between hot sharp-tongued 21 and the mold cavity on being arranged on this hot mouth body 14 when gapped, can regulate by drive unit 13, described heat sharp-tongued 21 can be contacted with mold cavity is fine, thereby can reduce sharp-tongued 21 processing requests of heat.

When carrying out the injection moulding injection, described drive unit 13 hot mouth bodies 14 move forward, and cast gate department 20 and mould are closely cooperated; When the injection moulding injection stopped, first pumpback sizing material reduced the remaining injection pressure in hot runner manifold 6 and the hot mouth body 14, drove hot mouth body 14 by described drive unit 13 then and moved backward, and make cast gate department 20 and mold separation realize disconnected glue.

Compared with prior art, mould adds simply, and sealing cooperates and only to need cast gate department 20 and mould cooperation position, and other positions can empty avoiding, has both made mold cavity produce deviation a little in machining accuracy, can not influence the assembling and the use of whole TOP-TIP.Around having only cast gate department 20, contact simultaneously, thereby can reduce the heat loss of TOP-TIP with mold cavity.

Be provided with high-temperature wearable sealing ring 16 at hot mouth body 14 with hot runner manifold 6 cooperation places, can prevent leak-stopping glue.Described cast gate 9 can prevent that than the little 0.5mm-1.0mm of mould gate sphere from can not influence sharp-tongued 21 plastic emittings of heat yet when cooperating dislocation.The outer cast gate departments 20 that are arranged with of described heat sharp-tongued 21, this cast gate department 20 are provided with sharp-tongued 21 concentric positions of heat and are trumpet-shaped cast gate 9, and the glue that conveniently breaks on the one hand prevents flowability sizing material cast gate curtain coating when hot mouth body 14 rollbacks are finished in injection moulding preferably on the other hand.

Requirement to the length of heat sharp-tongued 21 reduces, because sharp-tongued 21 front ends of heat cooperate with mould, even hot sharp-tongued 21 length has deviation a little, also can compensate by adjusting drive unit 13.Because TOP-TIP is when mounted, earlier hot runner manifold 6, main nozzle 10 and accessory are installed on the backing plate 3, and fix after the top clamping plate 1 just and to be installed to the cover half die cavity from top clamping plate 1 heat is sharp-tongued, thereby easy for installation.

The above only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims (10)

1. retractable hot runner system is characterized in that:
This system comprises hot mouth body, hot runner manifold, main nozzle and the drive unit that is connected with described hot mouth body, wherein,
Described hot mouth body is fixedlyed connected with drive unit, and the hot flow path hole on this hot mouth body is communicated with the Kong Yiduan on the hot runner manifold, and the other end in this hole is communicated with through hole on the main nozzle;
Described hot mouth body is provided with the first heating circle, the sharp-tongued and hot mouth cast gate of heat department, and this hot mouth cast gate department cooperates with hot sharp-tongued and hot mouth body to be fixed;
Described hot runner manifold is provided with heat-generating pipe, is provided with support ring between this hot runner manifold and backing plate; Described main nozzle outer felt is wound with the second heating circle.
2. retractable hot runner system according to claim 1 is characterized in that:
Described drive unit comprises pneumatic shuttle or oil gear.
3. retractable hot runner system according to claim 1 and 2 is characterized in that:
Be provided with stop pin between described backing plate and the hot runner manifold.
4. retractable hot runner system according to claim 1 and 2 is characterized in that:
The described first heating circle outside is arranged with first protective sleeve, and the described second heating circle outside is arranged with second protective sleeve.
5. retractable hot runner system according to claim 1 and 2 is characterized in that:
Be provided with circular cambered surface around through hole one end face on the described main nozzle.
6. retractable hot runner system according to claim 1 and 2 is characterized in that:
Be provided with sealing ring between described hot mouth body and the hot runner manifold.
7. retractable hot runner system according to claim 6 is characterized in that:
Described sealing ring is red metal or aluminium.
8. retractable hot runner system according to claim 1 and 2 is characterized in that:
Be provided with the pressure meson between described top clamping plate and the hot runner manifold.
9. retractable hot runner system according to claim 1 and 2 is characterized in that:
Be arranged with cast gate department outside described heat is sharp-tongued, this cast gate department and hot sharp-tongued concentric position are provided with and are trumpet-shaped cast gate.
10. retractable hot runner system according to claim 9 is characterized in that:
The little 0.5mm-1.0mm of described cast gate department's gating proportion mould gate.
CN200910239007A 2009-12-25 2009-12-25 Retractable hot runner system CN101774255A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910239007A CN101774255A (en) 2009-12-25 2009-12-25 Retractable hot runner system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910239007A CN101774255A (en) 2009-12-25 2009-12-25 Retractable hot runner system

Publications (1)

Publication Number Publication Date
CN101774255A true CN101774255A (en) 2010-07-14

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105108970A (en) * 2015-08-07 2015-12-02 常熟康尼格科技有限公司 Low pressure glue injecting device without flow channel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1593889A (en) * 2003-09-09 2005-03-16 发那科株式会社 Nozzle touch mechanism for injection moulding machine
CN1872442A (en) * 2005-05-19 2006-12-06 标准模具有限公司 Thermal shroud and method of making same
CN2863438Y (en) * 2005-11-28 2007-01-31 先锐模具配件(东莞)有限公司 Open style big water gap thermal flow path mould

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1593889A (en) * 2003-09-09 2005-03-16 发那科株式会社 Nozzle touch mechanism for injection moulding machine
CN1872442A (en) * 2005-05-19 2006-12-06 标准模具有限公司 Thermal shroud and method of making same
CN2863438Y (en) * 2005-11-28 2007-01-31 先锐模具配件(东莞)有限公司 Open style big water gap thermal flow path mould

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105108970A (en) * 2015-08-07 2015-12-02 常熟康尼格科技有限公司 Low pressure glue injecting device without flow channel
CN105108970B (en) * 2015-08-07 2018-11-09 苏州康尼格电子科技股份有限公司 Low pressure is without runner glue filling device

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Application publication date: 20100714

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