KR101875104B1 - Heat pipe nozzle system for injection molding - Google Patents

Heat pipe nozzle system for injection molding Download PDF

Info

Publication number
KR101875104B1
KR101875104B1 KR1020150139792A KR20150139792A KR101875104B1 KR 101875104 B1 KR101875104 B1 KR 101875104B1 KR 1020150139792 A KR1020150139792 A KR 1020150139792A KR 20150139792 A KR20150139792 A KR 20150139792A KR 101875104 B1 KR101875104 B1 KR 101875104B1
Authority
KR
South Korea
Prior art keywords
nozzle
heat pipe
temperature
nozzle housing
heat
Prior art date
Application number
KR1020150139792A
Other languages
Korean (ko)
Other versions
KR20170040601A (en
Inventor
유성진
황인기
Original Assignee
주식회사 유도
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 주식회사 유도 filed Critical 주식회사 유도
Priority to KR1020150139792A priority Critical patent/KR101875104B1/en
Priority to PCT/KR2016/002466 priority patent/WO2017061676A1/en
Publication of KR20170040601A publication Critical patent/KR20170040601A/en
Application granted granted Critical
Publication of KR101875104B1 publication Critical patent/KR101875104B1/en

Links

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
    • B29C45/20—Injection nozzles
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention relates to a heat pipe nozzle apparatus for injection molding. A heat pipe nozzle device for injection molding according to an embodiment of the present invention includes a nozzle housing including a nozzle housing having a coupling portion formed at a rear end thereof so as to be coupled to a manifold and having a resin inlet hole through which resin is supplied and flowed; A nozzle tip fixedly coupled to a tip of the nozzle housing to discharge the resin to the gate side of the mold, and a union member fixedly connecting the nozzle tip and the nozzle housing. A heat pipe mounted on an outer circumferential surface of the nozzle housing to supply a heat source, a heat pipe mounted on an outer circumferential surface of the nozzle housing to receive a heat source from the heater, a heat pipe formed on an inner circumferential surface of the heat pipe, And a heating means including a fluid moving tube in which a liquid heating medium is accommodated and a capillary-shaped metal wastewater tube arranged in the inner periphery of the fluid moving tube and circulating the liquid heating medium. Therefore, according to the embodiment of the present invention, since the temperature of the entire surface of the nozzle can be increased even with a small heat source, it is possible to save energy according to the use of the heat source and to maintain the temperature balance of the nozzle.

Description

[0001] Heat pipe nozzle system for injection molding [0002]

The present invention relates to a heat pipe nozzle apparatus for injection molding. More specifically, since the heat pipe is integrally formed on the outer circumferential surface of the nozzle, it is possible to raise the temperature of the entire surface of the nozzle even with a small heat source, thereby saving energy due to the use of a heat source and maintaining the temperature balance of the nozzle very easily To a heat pipe nozzle device for injection molding.

Generally, an injection molding machine for molding a resin product is such that a raw material of a synthetic resin is injected into a cylinder provided at one side and injected into a mold in a molten state in the cylinder, and the upper mold injects resin evenly into a plurality of cavities formed in a lower mold A plurality of nozzles for injecting resin into the cavities of the lower mold are provided on the bottom surface of the manifold to fill the cavities with a high pressure of the resin and when the resin filled in the cavities is solidified, So that the molded product is taken out while the lower molds are separated from each other.

Particularly, in order to maintain the fluidity of the resin, the nozzle is provided with a heater on the outer circumferential surface thereof. Such a heater is controlled by a temperature controller provided outside the metal mold to maintain the nozzle at a constant temperature, So that it is prevented from being solidified.

For example, the applicant of the present invention, as disclosed in Korean Patent No. 10-1222168, is a nozzle of a hot runner having a built-in hot wire made of ceramic containing silicon nitride and silicon carbide and oxides such as alumina and zirconia, It is made of ceramics with corrosive and thermal conductivity, and the heat

A nozzle having a pre-formed groove spaced apart by a predetermined distance and forming a ceramic layer by applying ceramic on the outer surface; A nozzle tip coupled to an end of the nozzle to inject or block the resin flowing along the resin flow path through the valve pin up and down into the mold; And a union that maintains the force of engagement between the nozzle and the nozzle tip.

However, since the above-described nozzle has a structure in which the temperature of the nozzle is lowered due to heat loss from the reinforcing plate, and the lower end of the nozzle is also in contact with the mold, considerable heat loss occurs on the mold side, .

As a result, there is a problem that the temperature of the other point is excessively increased to solidify the resin or to heat a specific point, and the temperature difference between the upper and lower ends is generated due to the influence of the reinforcing plate and the cavity plate.

If the overall temperature of the nozzle is not uniform and non-uniform, the melt state of the resin becomes unstable and the molding quality is deteriorated.

delete

Korean Registered Patent No. 10-1222168

It is an object of the present invention to provide a heat pipe nozzle device for injection molding capable of raising the temperature of an entire surface of a nozzle even with a small heat source, .

In order to achieve the above object,
A heat pipe nozzle device for injection molding according to an embodiment of the present invention includes a nozzle housing including a nozzle housing formed with a coupling portion at a rear end thereof so as to be coupled to a manifold and having a resin inlet hole for supplying and flowing resin therein;
A nozzle tip fixedly coupled to a tip end of the nozzle housing and discharging resin to a gate side of the mold; And
A union member fixedly coupling the nozzle tip and the nozzle housing;
/ RTI >
A cylindrical heat pipe which is connected to the heater to receive a heat source from the heater and surrounds the outer circumferential surface of the nozzle housing, a heat pipe arranged on the inner circumferential surface of the heat pipe, And a capillary-shaped metal wick pipe formed on an inner circumferential surface of the fluid moving pipe to circulate the liquid heating medium when the heat source is transferred to the pipe, wherein the liquid wicking medium is heated by the heat source to raise the temperature of the nozzle, Way;
Further comprising:
Wherein the fluid moving tube includes a medium accommodating portion for accommodating a liquid heating medium and flowing the heated liquid heating medium to raise the temperature of the nozzle, a heating portion for heating the liquid heating medium accommodated in the one side portion of the medium accommodating portion, And a heat dissipating portion formed on the other side of the accommodating portion to dissipate the heated liquid heating medium. When the liquid heating medium heated by the heating portion flows to the side of the heat dissipating portion through the medium accommodating portion to raise the temperature of the nozzle, The heating medium is circulated to the heating unit side to perform reheating by the heat source.

According to another aspect of the present invention, there is provided a heat pipe nozzle apparatus for injection molding, comprising: a temperature control sensor coupled to an outer circumferential surface of the nozzle housing to control a temperature of a heat pipe and a nozzle housing;
As shown in FIG.

delete

Further, in the heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention, the nozzle housing has an outer circumferential surface coupled with an end of a temperature control sensor, and a control groove for controlling the temperature of the nozzle housing and the heat pipe .

Further, in the heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention, the heat pipe may be separated from the heater to raise the temperature of the nozzle by indirect heating.

In the heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention, the heat pipe is integrally formed with a heater, and the temperature of the nozzle can be raised by a direct heating method in which a heat source is directly supplied from the heater .

According to an embodiment of the present invention, the temperature of the entire surface of the nozzle can be increased even with a small heat source through a heater, a heat pipe that transmits a heat source, and a liquid heating medium heated by a heat source, It is possible not only to save energy according to the present invention, but also to maintain the temperature balance of the nozzle very easily.

1 is an exploded perspective view of a heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention;
FIGS. 2A and 2B are coupling cross-sectional views illustrating a heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention;
3 is a cross-sectional view illustrating a heat source moving in a heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention.
4 is a perspective view illustrating a heat pipe nozzle apparatus for injection molding according to an embodiment of the present invention.
Fig. 5 is a sectional view of Fig. 4; Fig.

In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, the heat pipe nozzle device of the present invention includes a nozzle 100 coupled to a manifold and through which resin is introduced and discharged, a nozzle 100 for discharging the resin supplied from the manifold to the mold side of the injection molding, The temperature of the nozzle 100 is raised by the tip 300, the union member 200 fixing the nozzle tip 300 to the nozzle 100, and the heat and heat of the fluid, And a heating unit 400 including a heater 120 for providing a heat source to maintain the heat source 120 and a heat pipe 410 for receiving a heat source from the heater 120.

The nozzle 100 is provided at its rear end with an engaging portion 112 for receiving resin from the nozzle locator through engagement with the manifold, and a resin inflow hole 114 are formed inside the nozzle housing 110.
The heater 120 is wound around the outer circumferential surface of the nozzle housing 110 to provide a heat source to the heat pipe 410.

At this time, the heater mounting groove 116 may be formed on the outer circumferential surface of the nozzle housing 110 so that the heater 120 can be mounted.

A coupling groove 115 is formed at the tip of the nozzle housing 110 so that the nozzle tip 300 is inserted and the end of the nozzle tip 300 is fixed so that the resin can be discharged through the resin inlet hole 114 A control groove 118 is formed on the upper and lower outer circumferential surfaces to fix the temperature of the nozzle 100 and the heat pipe 410 by fixing the end of the temperature control sensor 440 of the heat pipe 410, .

Here, a thread may be formed on the inner circumference of the coupling groove 115 so that the union member 200 can be screwed.

The control groove 118 may be formed at each of the bifurcations along the circumferential surface of the nozzle housing 110 so as to be precisely controlled through the plurality of temperature control sensors 440. However, the present invention is not limited thereto.

The nozzle tip 300 is inserted into the coupling groove 115 formed at the tip of the nozzle housing 110 and a resin discharge hole 310 for discharging the resin through the resin inlet hole 114 is formed.

The nozzle tip 300 may be configured to be coupled with the nozzle housing 110 by the union member 200.

The union member 200 is a component that is coupled to the coupling groove 115 of the nozzle housing 110 to fix the nozzle tip 300 while minimizing heat loss of the nozzle tip 300.

This union member 200 allows the nozzle tip 300 to penetrate and discharge the resin to the gate side of the mold and presses the flange portion formed at the end of the nozzle tip 300 to engage with the nozzle housing 110 A tip fixing hole 210 is formed.

The heating means 400 according to an embodiment of the present invention is formed into a cylindrical shape surrounding the outer circumferential surface of the nozzle housing 110 so as to raise the temperature of the nozzle 100 with only a small amount of heat, A fluid flow pipe 420, a metal wick 430 and a temperature control sensor 440 for raising the temperature of the nozzle 100 through the heat pipe 410. [

The heat pipe 410 is made of, for example, copper, receives a heat source from the heater 120, and heats the liquid heating medium received in the fluid moving pipe 420 by the transmitted heat source.

The heat pipe 410 may be connected to the heater 120 or may be configured to be embedded in the heater 120 to be coupled to the outer circumferential surface of the nozzle housing 410.

In addition, the heat pipe 410 is provided with a fluid transfer pipe 420 in which a liquid heating medium heated by a heat source transmitted from the heater 120 is accommodated in the inner circumferential surface, and heat and heat radiation of the liquid heating medium is performed.

When a heat source is transmitted to the side of the heat pipe 410, the fluid moving pipe 420 receives a liquid heating medium heated by the heat source to raise the temperature of the nozzle 100, and a heated liquid heating medium is supplied to the nozzle The heating unit 424 and the medium accommodating unit 422, which are formed on one side of the medium accommodating unit 422 and in which the accommodated liquid heating medium is heated, And a heat dissipating unit 426 disposed at the other side of the heat exchanger 421 to dissipate the heated liquid heating medium.

The metal wicking pipe 430 is formed on the inner circumferential surface of the fluid moving pipe 420. When the liquid heating medium heated by the heating unit 424 flows to the heat dissipating unit 426 side to raise the temperature of the nozzle 100, And the heating medium is circulated back to the heating section 424 side to reheat by the heat source.

The metal wicking pipe 430 may be formed in the form of a capillary tube so that the heat-transferring liquid-phase heating medium can circulate back to the heating unit 424 side.

The temperature control sensor 440 is installed in the nozzle housing 110 to measure the temperature of the heat pipe 410 and the temperature of the nozzle housing 110 and adjusts the temperature of the nozzle housing 110 120) to be heated.

The heat pipe 410 of the present invention constructed as described above is constructed independently of the heater 120 and is mounted on the nozzle housing 110 so that the temperature of the nozzle 100 is raised by the indirect heating method using the heater 120 Structure.
That is, in the indirect heating method, the heater 120 heats the nozzle housing 110, and the heat source generated at this time increases the temperature of the nozzle 100 as heat conduction is performed by the heat pipe 410.
4 and 5, the heat pipe 410 according to an embodiment of the present invention is integrally formed with the heater 120 and is connected to the heater 120 through a direct heating method The temperature of the nozzle 100 may be raised.

In this direct heating method, the heater 120 directly heats the heat pipe 410 to directly transmit the heat source of the heater 120 to the heat pipe 410 side.

According to an embodiment of the present invention configured as described above, since the temperature of the entire surface of the nozzle 100 can be increased even with a small heat source through the heat pipe 410, it is possible to save energy by using the heat source, It is very easy to maintain the temperature balance of the battery 100.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to those precise embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. And all terms including technical and scientific terms are to be construed in a manner generally known to one of ordinary skill in the art to which this invention belongs, It has the same meaning as understood.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: nozzle 110: nozzle housing
112: coupling portion 114: resin inflow hole
115: engaging groove portion 116: heater mounting groove
118: control groove 120: heater
200: Union member 300: Nozzle tip
310: resin discharge hole 400: heating means
410: heat pipe 420: fluid flow tube
422: medium receiving portion 424: heating portion
426: heat sink 430: metal core tube
440: Temperature control sensor

Claims (6)

A nozzle including a nozzle housing formed with a resin inlet hole through which a resin is supplied and flowed therein;
A nozzle tip fixedly coupled to a tip end of the nozzle housing and discharging resin to a gate side of the mold; And
A union member fixedly coupling the nozzle tip and the nozzle housing;
/ RTI >
A cylindrical heat pipe which is connected to the heater to receive a heat source from the heater and surrounds the outer circumferential surface of the nozzle housing, a heat pipe arranged on the inner circumferential surface of the heat pipe, And a capillary-shaped metal wick pipe formed on an inner circumferential surface of the fluid-moving pipe to circulate the liquid-phase heating medium when the heat source is transferred to the pipe, wherein the liquid wicking medium is heated by the heat source to raise the temperature of the nozzle, Way;
Further comprising:
Wherein the fluid moving tube includes a medium accommodating portion for accommodating a liquid heating medium and flowing the heated liquid heating medium to raise the temperature of the nozzle, a heating portion for heating the liquid heating medium accommodated in the one side portion of the medium accommodating portion, And a heat dissipating portion formed on the other side of the accommodating portion to dissipate the heated liquid heating medium. When the liquid heating medium heated by the heating portion flows to the side of the heat dissipating portion through the medium accommodating portion to raise the temperature of the nozzle, Wherein the heating medium is circulated to the heating unit side to reheat by the heat source.
The method according to claim 1,
A temperature control sensor coupled to an outer circumferential surface of the nozzle housing to control a temperature of the heat pipe and the nozzle housing;
Further comprising: a heat pipe nozzle unit for injection molding.
delete The method of claim 2,
Wherein the nozzle housing has a control groove to which an end of a temperature control sensor is coupled to an outer circumferential surface of the nozzle housing and a temperature control of the nozzle housing and the heat pipe is performed.
The method according to claim 1,
Wherein the heat pipe is separated from the heater to raise the temperature of the nozzle by an indirect heating method.
The method according to claim 1,
Wherein the heat pipe is integrally formed with a heater, and the temperature of the nozzle is raised by a direct heating method in which a heat source is directly supplied from the heater.
KR1020150139792A 2015-10-05 2015-10-05 Heat pipe nozzle system for injection molding KR101875104B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150139792A KR101875104B1 (en) 2015-10-05 2015-10-05 Heat pipe nozzle system for injection molding
PCT/KR2016/002466 WO2017061676A1 (en) 2015-10-05 2016-03-11 Heat pipe nozzle apparatus for injection molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150139792A KR101875104B1 (en) 2015-10-05 2015-10-05 Heat pipe nozzle system for injection molding

Publications (2)

Publication Number Publication Date
KR20170040601A KR20170040601A (en) 2017-04-13
KR101875104B1 true KR101875104B1 (en) 2018-07-05

Family

ID=58487949

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150139792A KR101875104B1 (en) 2015-10-05 2015-10-05 Heat pipe nozzle system for injection molding

Country Status (2)

Country Link
KR (1) KR101875104B1 (en)
WO (1) WO2017061676A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110126224A (en) * 2019-04-26 2019-08-16 合肥鑫飞亚模塑有限公司 A kind of injecting mechanism of environmental protection injection molding machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136760B1 (en) * 2011-06-24 2012-05-03 주식회사 엠엔에이치 Ceramic nozzle device for hot-runner system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116427A (en) * 1983-11-30 1985-06-22 Matsushita Electric Works Ltd Extrusion screw for resin in molding machine
US5352109A (en) * 1993-03-08 1994-10-04 Salvatore Benenati Injection molding apparatus
DE20100840U1 (en) * 2001-01-16 2001-04-05 Guenther Gmbh & Co Kg Metallve Hot runner nozzle
CA2358148A1 (en) * 2001-10-03 2003-04-03 Mold-Masters Limited A nozzle
KR101222168B1 (en) 2010-11-17 2013-01-25 주식회사 유도 Hot Runner of Nozzle With Heating coil And Manufacturing Method with the Same
KR101618946B1 (en) * 2014-03-12 2016-05-09 김관표 Nozzle and Nozzle Heater Apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101136760B1 (en) * 2011-06-24 2012-05-03 주식회사 엠엔에이치 Ceramic nozzle device for hot-runner system

Also Published As

Publication number Publication date
WO2017061676A1 (en) 2017-04-13
KR20170040601A (en) 2017-04-13

Similar Documents

Publication Publication Date Title
KR100975014B1 (en) Apparatus for quick heating and cooling a injection mold, and method of controlling temperature of the injection mold
JP2007276481A (en) Nozzle combining structure of hot runner system for injection molding machine
US7137806B2 (en) Thermally balanced hot runner nozzle
JP4499181B2 (en) Rapid heating method for molds
KR101875104B1 (en) Heat pipe nozzle system for injection molding
KR101872087B1 (en) Nozzle device of a hot runner injection mold capable of direct temperature controlling
KR102014053B1 (en) 3d printer
US8628322B2 (en) Mold apparatus for use in injection molding of a liquid silicone composition
KR101932065B1 (en) Hot runner open nozzle assembly
KR101136553B1 (en) Single valve system
KR102152765B1 (en) Die Casting Nozzle System
US5645874A (en) Multiple gate injection nozzle
KR101136760B1 (en) Ceramic nozzle device for hot-runner system
JP6749328B2 (en) Device for supplying molten metal in injection molding machine
CN107407499B (en) Heat exchange device with annular sipe section for use in liquid adhesive systems and related methods
US10464233B2 (en) Ejector capable of being preheated, injection mold having the ejector, and method of manufacturing molded part using the injection mold
JP7057963B2 (en) Molding system
KR101263979B1 (en) Nozzle tep with cooler
JPWO2017149723A1 (en) Injection mold
KR20170001463A (en) LSR Valve nozzle for an injection molding device
KR101939580B1 (en) Single nozzle for injection molder
JP7375187B2 (en) Short range and efficient liquid cooled dispenser
KR101239958B1 (en) Mold Apparatus
KR20170067538A (en) Heating cylinder for an injection device
KR101945982B1 (en) Hot runner system to apply heat spreader

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E90F Notification of reason for final refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)