KR101793893B1 - Heating cylinder for an injection device - Google Patents

Heating cylinder for an injection device Download PDF

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Publication number
KR101793893B1
KR101793893B1 KR1020150174297A KR20150174297A KR101793893B1 KR 101793893 B1 KR101793893 B1 KR 101793893B1 KR 1020150174297 A KR1020150174297 A KR 1020150174297A KR 20150174297 A KR20150174297 A KR 20150174297A KR 101793893 B1 KR101793893 B1 KR 101793893B1
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KR
South Korea
Prior art keywords
injection
heating
heat pipe
resin
housing
Prior art date
Application number
KR1020150174297A
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Korean (ko)
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KR20170067538A (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.)
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Application filed by 주식회사 유도 filed Critical 주식회사 유도
Priority to KR1020150174297A priority Critical patent/KR101793893B1/en
Priority to PCT/KR2016/002468 priority patent/WO2017099298A1/en
Publication of KR20170067538A publication Critical patent/KR20170067538A/en
Application granted granted Critical
Publication of KR101793893B1 publication Critical patent/KR101793893B1/en

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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
    • B29C45/20—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
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • 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
    • 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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  • 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 heating cylinder for an injection apparatus. The heating cylinder for an injection apparatus according to an embodiment of the present invention includes: an injection hole communicating with a resin supply hopper so as to inject and flow resin; a nozzle housing having a heating groove formed on an outer circumferential surface thereof to maintain a temperature balance of the resin; An injection nozzle coupled to a distal end of the nozzle housing and injecting resin into an injection molding machine for molding an injection mold when resin is injected; An injection screw inserted into the nozzle housing and moving along the inner periphery of the injection hole to move the resin toward the injection nozzle; A heat pipe coupled to the heating groove and having a heating medium therein to maintain a temperature balance with respect to the entire outer peripheral surface of the nozzle housing when a heat source is transmitted; A barrel housing coupled to an outer surface of the heat pipe to prevent heat loss of the heat medium while transferring a heat source and to maintain the coupling between the heat pipe and the heating groove, And a band heater provided to the barrel housing and the heat pipe.

Description

{Heating cylinder for an injection device}

The present invention relates to a heating cylinder for an injection apparatus. And more particularly, to a heat pipe in which a heating medium circulates in a housing of an injection nozzle, and a band heater for heating the heat pipe is provided on an end side to provide a maximum heating efficiency with a minimum heater, To a heating cylinder for an injection apparatus capable of uniform heat transfer to a housing side due to heat transfer function.

As shown in FIG. 1, an injection molding machine generally includes an injection mechanism 102 for supplying and injecting resin for injection molding and maintaining the temperature of the resin at a constant level, And a mold clamping mechanism 104 for molding an injection molding of a specific shape when the resin is injected and an electric control unit 106 for controlling the injection molding machine 102 and the mold clamping mechanism 104.

Particularly, as shown in Fig. 2, the injection mechanism unit 102 comprises an injection nozzle 110 for injecting the supplied resin into the mold mechanism unit 104 side, and the injection nozzle 110 is provided with a resin A plurality of band heaters 120 are formed on the outer peripheral surface of the injection nozzle 110. [

Here, the band heater 120 is controlled by a controller provided outside the mold to heat the injection nozzle to prevent the resin from solidifying in the injection nozzle when the resin passes through the injection nozzle.

However, since the temperature range of the band heater 120 according to the related art is narrow, it is difficult to uniformly heat the entire outer surface of the injection nozzle 110, so that it is difficult to control the injection temperature of the resin.

In addition, according to the above-described conventional technique, the manufacturing cost of the injection molding apparatus is increased by installing a plurality of band heaters 120 on the outer circumferential surface of the injection nozzle 110, and the operation according to the driving and control of the band heater 120 There is a problem that the cost also has to rise.

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Korean Patent Publication No. 10-0764543 Korean Patent Publication No. 10-0323458

In order to solve such problems, the present invention has been devised in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing an injection nozzle which can provide a maximum heating efficiency to a housing of an injection nozzle with a minimum number of heaters, And it is an object of the present invention to provide a heating cylinder for an injection apparatus capable of heat transfer.

Further, the present invention provides a heating cylinder for an injection apparatus capable of preventing the resin from solidifying even with a minimum operating cost and thus reducing the energy required for using the injection molding apparatus, because only a minimum band heater is used It has its purpose.

Another object of the present invention is to provide a heating cylinder for an injection apparatus capable of heating the heat pipe to control the temperature of the resin, thereby significantly shortening the temperature rise time of the housing.

In order to achieve the above object,
The heating cylinder for an injection apparatus according to an embodiment of the present invention includes: an injection hole communicating with a resin supply hopper so as to inject and flow resin; a nozzle housing having a heating groove formed on an outer circumferential surface thereof to maintain a temperature balance of the resin;
An injection nozzle coupled to a distal end of the nozzle housing and injecting resin into an injection molding machine for molding an injection mold when resin is injected;
An injection screw inserted into the nozzle housing and moving along the inner periphery of the injection hole to move the resin toward the injection nozzle;
A heat pipe coupled to the heating groove and having a heating medium therein to maintain a temperature balance with respect to the entire outer peripheral surface of the nozzle housing when a heat source is transmitted;
A barrel housing coupled to an outer surface of the heat pipe to prevent heat loss of the heat medium while transferring a heat source and to maintain the coupling between the heat pipe and the heating groove; And
A band heater which is formed at one end of the outer circumferential surface of the barrel housing and provides a heat source to the barrel housing and the heat pipe;
And a control unit.

According to an embodiment of the present invention, the nozzle housing is divided into the outer circumferential surface of the heating groove, and the heat pipe, the barrel housing, and the band heater are independently provided in the divided heating groove, So that the temperature of the nozzle housing can be controlled for each zone.

According to an embodiment of the present invention, the heat pipe further includes a spiral circulation groove through which the heating medium circulates to generate heat conduction to the outer surface of the nozzle housing.

According to an embodiment of the present invention, the nozzle housing includes a fixing groove for allowing the barrel housing and the heat pipe to be seated in the heating groove, and a fixing groove for fixing the position of the heat pipe, And a fastening protrusion protruded upward from the barrel housing and the end of the band heater is closely contacted with the barrel housing.

According to an embodiment of the present invention, the heating groove is formed in a shape corresponding to the shape of the heat pipe, and is formed of any one of a square, a circle, and an ellipse.

According to an embodiment of the present invention, the heating groove may be formed in the shape of a hemispherical groove along a circumferential surface with respect to the axis center of the nozzle housing and may be spaced apart, or the heat pipe may surround the entire circumference of the nozzle housing So as to be installed in a wrapping state.

According to one embodiment of the present invention, a maximum heating efficiency can be provided with a minimum heater to the housing of the injection nozzle, and heat transfer to the housing side can be effected due to the heat transfer function of the heat pipe.

Further, according to the embodiment of the present invention, since only the minimum band heater is used, it is possible to prevent the resin from solidifying even with a minimum operating cost, thereby reducing the energy required for using the injection molding apparatus have.

According to an embodiment of the present invention, since the temperature of the resin can be controlled by heating the heat pipe, the temperature rise time of the housing can be remarkably shortened.

Further, according to the embodiment of the present invention, the housing of the conventional injection nozzle can be improved and used, thereby remarkably reducing the manufacturing cost of the injection molding machine.

1 is a perspective view showing a general injection molding machine.
Figure 2 shows an injection nozzle according to the prior art,
3 is a sectional view showing a heating cylinder for an injection apparatus according to an embodiment of the present invention;
4 is an enlarged view of a main part of a heating cylinder for an injection apparatus according to an embodiment of the present invention;
5 to 7 are sectional views showing a heating cylinder for an injection apparatus according to an embodiment of the present invention.

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

3 to 4, the heating cylinder for an injection apparatus of the present invention includes a resin supply hopper 202, a nozzle housing 210, an injection screw 220, a heat pipe 230, a barrel housing 240, And a band heater 250.

The nozzle housing 210 is made of resin so that the resin flows into the nozzle housing 210. When the resin is injected into the nozzle housing 210, the injection molding machine forms an injection molding product. More specifically, An injection hole 212 is formed in which the injection screw 220 is operatively inserted.

Here, the mold clamping mechanism part 104 is an element constituting the injection molding machine together with an injection mechanism part (102 in FIG. 1) for supplying and injecting resin for injection molding and keeping the temperature of the resin constant.
In addition, the injection hole 212 is formed to penetrate the inside of the nozzle housing 210. One end of the injection hole 212 is formed in such a shape that its diameter is gradually narrowed so that the resin can be easily injected, And a support housing (not shown) having a bearing configured to support a rotation operation of the injection screw 220 may be further provided at the other end thereof.

The nozzle housing 210 is configured to communicate with the injection hole 212 and a resin supply hopper 202 for supplying the resin to the injection hole 212 side is fixedly coupled.

In the nozzle housing 210, a heating groove 214 is formed on one side of the outer circumference of the nozzle housing 210, on which the heat pipe 230 is installed, among the heating means for controlling the temperature of the resin to be constant.

The heating groove 214 is recessed in the form of a groove on the outer circumferential surface of the nozzle housing 210 and is formed long along the longitudinal direction of the nozzle housing 210. The heating groove 214 is formed by heat energy transmitted from the heat pipe 230 The temperature of the resin flowing in the injection hole 212 can be kept constant.

Such a heating groove 214 may be formed in a shape corresponding to the shape of the heat pipe 230. That is, when the shape of the heat pipe 230 is formed into various shapes such as a square shape, a circular shape, an elliptical shape, etc., the heating groove 214 of the present invention is formed in a shape corresponding to the heat pipe 230 and tightly coupled with the heat pipe 230 .

In addition, the heating groove 214 of the present invention may be formed in the form of a hemispherical groove along the circumferential surface with respect to the axial center of the nozzle housing 210 according to the shape of the heat pipe 230, 230 may be installed so as to surround the entire outer peripheral surface of the nozzle housing 210.

The nozzle housing 210 of the present invention has a fixing groove 218 for fixing the barrel housing 240 to the nozzle housing 210 to allow the heat pipe 230 to be mounted on the heating groove 214 .

The fixing groove 218 is formed such that a fixing ring or a fixing bracket coupled to both ends of the barrel housing 240 is inserted and coupled to the barrel housing 240. The fixing ring is not limited to the barrel housing 240, And the band heater 250 can be stably coupled.

The barrel housing 240 and the band heater 250 are mounted on the heating groove 214 in the nozzle housing 210 of the present invention and the barrel housing 240 and the band heater 250 are fixed to fix the position of the heat pipe 230. And a fixing jaw 215 protruding upward from the tip end side of the fixing groove 218 where the end side of the band heater 250 is closely contacted.

Meanwhile, the heat pipe 230 of the present invention may be configured in the form of a hollow tube or panel made of the same material, and has a heating medium which is heated from the heat source to radiate heat.

The heat pipe 230 is installed in the heating groove 214 formed in the outer circumferential surface of the nozzle housing 210 so that the heat medium is circulated so as to generate heat conduction to the outer surface of the nozzle housing 210, And the circulation groove may have a spiral shape and may be configured to circulate the inner circumferential surface of the heat pipe 230.

In addition, a barrel housing 240 is formed on the outer surface of the heat pipe 230 to prevent heat loss of the heat medium and to maintain the coupling between the heat pipe 230 and the heating groove 214.

The barrel housing 240 is configured such that an inner surface thereof surrounds the outer circumferential surface of the heat pipe 230 and a band heater 250 is attached to one end of the barrel housing 240 to transmit the heat source provided from the band heater 250 to the heat pipe 230 side The heat pipe 230 is pressurized so as to be completely in close contact with the heating groove 214 of the nozzle housing 210 so that the temperature balance of the entire surface of the nozzle housing 210 can be maintained constant.

The barrel housing 240 may be fixedly coupled to the outer circumferential surface of the nozzle housing 210. Preferably, both end portions of the barrel housing 240 are located at the distal end of the fixing groove 218, As shown in FIG.

The band heater 250 is a single component at one end of the outer circumferential surface of the barrel housing 240 and is a component that is supplied with power and provides a heat source to the barrel housing 240 and the heat pipe 230.

That is, according to the present invention, since only one band heater 250 is installed in the nozzle housing 210, the temperature balance can be kept constant and the energy required for resin injection can be reduced. Therefore, I can solve all of them.

It is needless to say that the present invention can be configured to control the temperature of the nozzle housing according to the physical properties of the resin by dividing the heating groove 214 into the outer circumferential surface of the nozzle housing 210.

5 and 6, the heating groove 214 is divided into the front and rear portions on the outer circumferential surface of the nozzle housing 210, so that the heater pipe 230 and the barrel housing 240 And the band heater 250 are independently divided, the temperature of each divided zone formed by injection molding such as PP can be controlled to be different from each other, and the temperature balance of the zone can be kept constant.

For example, the band heater 250 configured on the side of the injection nozzle 260 can be controlled to maintain the temperature of the nozzle housing 210 at a temperature of 190 占 폚, and the band heater The temperature of the extruder 250 can be controlled to be maintained at a temperature of 220 DEG C, so that the temperature of the extruder can be controlled variously according to the physical properties of the resin.

7, according to the present invention, a heater pipe 230 is inserted into the outer circumferential surface of a conventional nozzle housing 210, and a band heater 250 is mounted on one side of the outer surface of the heater pipe 230 , The heater pipe 230 and the band heater 250 may be mounted without further processing in the conventional nozzle housing 210 to maintain the temperature balance.

The present invention configured as described above can provide the maximum heating efficiency with one band heater 250 to the nozzle housing 210 and uniform heat transfer to the nozzle housing 210 due to the heat transfer function of the heat pipe 230 Since it is possible to easily maintain the temperature balance and use only one band heater 250, it is possible to prevent the resin from solidifying even with a minimum operating cost, thereby saving energy required for the use of the injection molding apparatus In addition, since the nozzle housing of the conventional injection nozzle can be modified and used, the manufacturing cost of the injection molding machine can be remarkably reduced.

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.

202; A resin supply hopper 210; Nozzle housing
220: injection screw 230; Heat pipe
240: Barrel housing 250: Band heater
260: injection nozzle

Claims (6)

An injection hole communicating with the resin supply hopper so as to inject and flow the resin; a nozzle housing having a heating groove formed on an outer circumferential surface thereof so as to maintain a temperature balance of the resin;
An injection nozzle coupled to a distal end of the nozzle housing and injecting resin into an injection molding machine for molding an injection mold when resin is injected;
An injection screw inserted into the nozzle housing and moving along the inner periphery of the injection hole to move the resin toward the injection nozzle;
A heat pipe coupled to the heating groove and having a heating medium therein to maintain a temperature balance with respect to the entire outer peripheral surface of the nozzle housing when a heat source is transmitted;
A barrel housing coupled to an outer surface of the heat pipe to prevent heat loss of the heat medium while transferring a heat source and to maintain the coupling between the heat pipe and the heating groove; And
A band heater which is formed at one end of the outer circumferential surface of the barrel housing and provides a heat source to the barrel housing and the heat pipe;
And a heating cylinder for heating the injection cylinder.
The method according to claim 1,
The nozzle housing is divided into the heating grooves on the outer circumferential surface, and the heat pipe, the barrel housing, and the band heater are independently provided in the divided heating grooves to control the temperature of the nozzle housing according to the physical properties of the resin. And a heating cylinder for heating the injection cylinder.
The method according to claim 1,
Wherein the heat pipe further comprises a spiral circulation groove through which the heating medium circulates to generate heat conduction to an outer surface of the nozzle housing.
The method according to claim 1,
Wherein the nozzle housing comprises: a fixing groove for allowing the barrel housing and the heat pipe to be seated in the heating groove; And
A fixing jaw which is protruded upward from the tip end side of the fixing groove so as to fix the position of the heat pipe and in which the end side of the barrel housing and the band heater are in close contact with each other;
Wherein the first and second cylinders are further configured to be movable in the first direction.
The method according to claim 1,
Wherein the heating groove is formed in a shape corresponding to the shape of the heat pipe, and is formed in any one of a square, circular, and elliptical shape.
The method according to claim 1,
The heating groove may be formed in the form of a hemispherical groove along a circumferential surface with respect to the axial center of the nozzle housing and may be spaced apart or may be installed such that the heat pipe surrounds the entire outer circumferential surface of the nozzle housing A heating cylinder for an injection device.

KR1020150174297A 2015-12-08 2015-12-08 Heating cylinder for an injection device KR101793893B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150174297A KR101793893B1 (en) 2015-12-08 2015-12-08 Heating cylinder for an injection device
PCT/KR2016/002468 WO2017099298A1 (en) 2015-12-08 2016-03-11 Heating cylinder for injection-molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150174297A KR101793893B1 (en) 2015-12-08 2015-12-08 Heating cylinder for an injection device

Publications (2)

Publication Number Publication Date
KR20170067538A KR20170067538A (en) 2017-06-16
KR101793893B1 true KR101793893B1 (en) 2017-11-06

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KR1020150174297A KR101793893B1 (en) 2015-12-08 2015-12-08 Heating cylinder for an injection device

Country Status (2)

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KR (1) KR101793893B1 (en)
WO (1) WO2017099298A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102063006B1 (en) * 2019-05-09 2020-02-20 주식회사 대성인더스트리 Screw extruder for extruding products with two or more colors

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200273507Y1 (en) 2002-01-19 2002-04-25 노정환 manifold for injection molding machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0655600A (en) * 1992-08-07 1994-03-01 Mechatro Tokiwa Internatl:Kk Control method of plasticized state of resin in molding machine with screw by measuring temperature of heating cylinder and nozzle
JPH08290453A (en) * 1995-04-24 1996-11-05 Meiki Co Ltd Method and apparatus for plasticization in injection molding machine
JPH10272653A (en) * 1997-03-28 1998-10-13 Sumitomo Heavy Ind Ltd Injection nozzle of injection molding machine
JP5200044B2 (en) * 2010-03-12 2013-05-15 エンパイア テクノロジー ディベロップメント エルエルシー Heated melt molding equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200273507Y1 (en) 2002-01-19 2002-04-25 노정환 manifold for injection molding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102063006B1 (en) * 2019-05-09 2020-02-20 주식회사 대성인더스트리 Screw extruder for extruding products with two or more colors

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Publication number Publication date
KR20170067538A (en) 2017-06-16
WO2017099298A1 (en) 2017-06-15

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