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WO2010041782A1 - Nozzle for injection molding machine with foreign substance removal function - Google Patents

Nozzle for injection molding machine with foreign substance removal function Download PDF

Info

Publication number
WO2010041782A1
WO2010041782A1 PCT/KR2008/005957 KR2008005957W WO2010041782A1 WO 2010041782 A1 WO2010041782 A1 WO 2010041782A1 KR 2008005957 W KR2008005957 W KR 2008005957W WO 2010041782 A1 WO2010041782 A1 WO 2010041782A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
insert
space part
injection molding
foreign substance
Prior art date
Application number
PCT/KR2008/005957
Other languages
French (fr)
Inventor
Joon-Wook Nam
Original Assignee
Joon-Wook Nam
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 Joon-Wook Nam filed Critical Joon-Wook Nam
Priority to PCT/KR2008/005957 priority Critical patent/WO2010041782A1/en
Priority to CN2008801307772A priority patent/CN102123842A/en
Publication of WO2010041782A1 publication Critical patent/WO2010041782A1/en

Links

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
    • B29C45/24—Cleaning equipment
    • 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

Definitions

  • the present invention relates to a nozzle for an injection molding machine with a foreign substance removal function. More particularly, the present invention relates to a nozzle for an injection molding machine for simply removing a foreign substance when the nozzle is stopped by the foreign substance and the like contained in a molten resin at the time of injecting the resin from a mold.
  • injection molding is a process of producing products by putting resin (i.e., raw materials) in a hopper of a molding machine, sending the resin to a heating cylinder, introducing the molten resin into the molding machine through a screw via a nozzle of an injector, filling the resin in a mold via a runner and a gate through the screw, and cooling the resin.
  • resin i.e., raw materials
  • FIG. 1 is a perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention
  • FIG. 2 is an exploded perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention
  • FIG. 3 is a perspective diagram illustrating a half sectional state of a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention.
  • FIGS. 4A and 4B are sectional diagrams illustrating operation states of a nozzle for an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention.
  • the present invention is directed to a roller driving apparatus of laminator that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a nozzle for an injection molding machine with a foreign substance removal function, for simply and rapidly boring the nozzle without separating the nozzle when a nozzle hole is stopped by a foreign substance during an injection molding work.
  • a nozzle for an injection molding machine with a foreign substance removal function includes a nozzle body, a nozzle tip, an insert, and a rotating unit.
  • the nozzle body has a first space part of a half spherical shape having a passageway whose diameter gradually reduces as going to the front along the center and formed at its front end, and has a guide groove formed at an upper end to be vertical with the passageway.
  • the nozzle tip has a second space part of a half spherical shape coupled to the front of the nozzle body and formed at its center, and has a guide groove formed at an upper part of the second space part.
  • the insert is inserted between the first space part of the nozzle body and the second space part of the nozzle tip and has a nozzle hole of a taper shape at its center.
  • the rotating unit is formed at the insert and rotates the insert.
  • FIG. 1 is a perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention.
  • FIG. 2 illustrates a state of separating the nozzle of the injection molding machine.
  • FIG. 3 illustrates a half sectional state of the nozzle of the injection molding machine.
  • FIGS. 4A and 4B are sectional diagrams illustrating operation states of the nozzle for the injection molding machine with the foreign substance removal function according to an exemplary embodiment of the present invention.
  • the nozzle for the injection molding machine with the foreign substance removal function includes a nozzle body 10, a nozzle tip 20, and an insert 30.
  • the nozzle body 10 has a first space part 13 of a half spherical shape having a passageway whose diameter gradually reduces as going to the front along the center, and formed at its front end.
  • the nozzle body 10 has a guide groove 16 formed at an upper end to be vertical with the passageway.
  • the nozzle tip 20 has a second space part 22 of a half spherical shape coupled to the front of the nozzle body and formed at its center.
  • the nozzle tip 20 has a guide groove 24 formed at an upper part of the second space part 22.
  • the insert 30 is inserted between the first space part 13 of the nozzle body and the second space part 22 of the nozzle tip.
  • the insert 30 has a nozzle hole 32 of a taper shape at its center.
  • the insert 30 has a rotating unit for rotating the insert 30.
  • a wrench hole 34 is provided at an upper part of the insert 30.
  • the nozzle body 10 has the passageway 12 whose diameter gradually reduces in a length direction of its center.
  • the nozzle body 10 has the hemi-spherical first space part 13 formed at the front end while connecting with the passageway 12.
  • the guide groove 16 is formed upside at a front end of the nozzle body 10 to be vertical with the passageway 12 and connects with the first space part 13.
  • a screw part 14 is formed in front around the nozzle body 10.
  • the nozzle tip 20 has a screw part 26 inside for coupling to the front of the nozzle body 10.
  • the nozzle tip 20 has the second space part 22 of a semi sphere shape formed at its center from the rear.
  • the second space part 22 has the guide groove 24 opened up.
  • the second space part 22 has a passageway 28 passing toward the front of the nozzle tip.
  • the insert 30 of a sphere shape is inserted between the first space part 13 of the nozzle body
  • the insert 30 has the taper-shaped nozzle hole 32 at its center, that is, has a jet part 32a of a small diameter and an inflow part 32b of a large diameter.
  • the nozzle hole 32 is in line with the passageway 12 of the nozzle body 10 with the same or like taper.
  • the insert 30 is rotated centering a pin shaft 35 by a predetermined rotating unit.
  • the rotating unit can be constructed by a grip of various shapes protruding outside and a turn unit.
  • the wrench hole 34 is provided on the pin shaft 35 as shown in the drawings, thus enabling a wrench 1 to simply and conveniently rotate the insert 30 at the outside.
  • the insert 30 rotated by the rotating unit as above changes a direction of the tapered nozzle hole 32 and is selectively adjusted with respect to the passageway 12 of the nozzle body 10.
  • a molten resin can be injected into a mold while an injection molding work goes on.
  • the wrench 1 is fitted into the wrench hole 34 through the guide grooves 16 and 24 and the insert 30 is rotated by 180° using the wrench 1.
  • the insert 30 is arranged such that the jet part 32a of a small diameter is in line with the passageway 12 of the nozzle body 10.
  • the foreign substance stopping the nozzle hole is simply discharged outside by a strong pressure of a molten resin.
  • a nozzle for an injection molding machine with a foreign substance removal function is to bore a stopped nozzle hole with no difficulty by simply changing a direction of the nozzle hole although the nozzle hole is stopped during an injection molding work.
  • the nozzle can reduce an exchange cost and a worker loss, prevent a failure of products with no work discontinuity, and greatly enhance productivity.

Landscapes

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

Abstract

A nozzle for an injection molding machine with a foreign substance removal function is provided. The nozzle includes a nozzle body, a nozzle tip, an insert, and a rotating unit. The nozzle body has a first space part having a passageway and formed at its front end, and has a guide groove formed at an upper end. The nozzle tip has a second space part coupled to the front of the nozzle body and formed at its center, and has a guide groove formed at an upper part of the second space part. The insert is inserted between the first space part and the second space part and has a nozzle hole of a taper shape at its center. The rotating unit is formed at the insert and rotates the insert.

Description

NOZZLE FOR INJECTION MOLDING MACHINE WITH FOREIGN SUBSTANCE
REMOVAL FUNCTION
Technical Field The present invention relates to a nozzle for an injection molding machine with a foreign substance removal function. More particularly, the present invention relates to a nozzle for an injection molding machine for simply removing a foreign substance when the nozzle is stopped by the foreign substance and the like contained in a molten resin at the time of injecting the resin from a mold.
Background Art
In general, injection molding is a process of producing products by putting resin (i.e., raw materials) in a hopper of a molding machine, sending the resin to a heating cylinder, introducing the molten resin into the molding machine through a screw via a nozzle of an injector, filling the resin in a mold via a runner and a gate through the screw, and cooling the resin.
When the molten resin is forced and injected into the mold as above, a nozzle hole of a small diameter is frequently stopped by a foreign substance contained in the resin. If the nozzle hole is stopped as above and thus injection of the molten resin is discontinued, a failure of products can occur. Because there is no means for boring the stopped nozzle hole, there is a great troublesomeness of separating the nozzle from the injector and scraping off with a pin. In particular, there is a problem that, upon damage of the nozzle, a lot of costs are consumed for exchange, and a work is discontinued for a long time, much deteriorating productivity.
Description of Drawings FIG. 1 is a perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention;
FIG. 2 is an exploded perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention;
FIG. 3 is a perspective diagram illustrating a half sectional state of a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention; and
FIGS. 4A and 4B are sectional diagrams illustrating operation states of a nozzle for an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention.
Disclosure
Accordingly, the present invention is directed to a roller driving apparatus of laminator that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide a nozzle for an injection molding machine with a foreign substance removal function, for simply and rapidly boring the nozzle without separating the nozzle when a nozzle hole is stopped by a foreign substance during an injection molding work.
To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, there is provided a nozzle for an injection molding machine with a foreign substance removal function. The nozzle includes a nozzle body, a nozzle tip, an insert, and a rotating unit. The nozzle body has a first space part of a half spherical shape having a passageway whose diameter gradually reduces as going to the front along the center and formed at its front end, and has a guide groove formed at an upper end to be vertical with the passageway. The nozzle tip has a second space part of a half spherical shape coupled to the front of the nozzle body and formed at its center, and has a guide groove formed at an upper part of the second space part. The insert is inserted between the first space part of the nozzle body and the second space part of the nozzle tip and has a nozzle hole of a taper shape at its center. The rotating unit is formed at the insert and rotates the insert.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to accompanying drawings.
FIG. 1 is a perspective diagram illustrating a nozzle of an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention. FIG. 2 illustrates a state of separating the nozzle of the injection molding machine. FIG. 3 illustrates a half sectional state of the nozzle of the injection molding machine. FIGS. 4A and 4B are sectional diagrams illustrating operation states of the nozzle for the injection molding machine with the foreign substance removal function according to an exemplary embodiment of the present invention.
As shown in the drawings, the nozzle for the injection molding machine with the foreign substance removal function includes a nozzle body 10, a nozzle tip 20, and an insert 30. The nozzle body 10 has a first space part 13 of a half spherical shape having a passageway whose diameter gradually reduces as going to the front along the center, and formed at its front end. The nozzle body 10 has a guide groove 16 formed at an upper end to be vertical with the passageway. The nozzle tip 20 has a second space part 22 of a half spherical shape coupled to the front of the nozzle body and formed at its center. The nozzle tip 20 has a guide groove 24 formed at an upper part of the second space part 22. The insert 30 is inserted between the first space part 13 of the nozzle body and the second space part 22 of the nozzle tip. The insert 30 has a nozzle hole 32 of a taper shape at its center. The insert 30 has a rotating unit for rotating the insert 30.
As the rotating unit, a wrench hole 34 is provided at an upper part of the insert 30.
The above is described below in detail.
The nozzle body 10 has the passageway 12 whose diameter gradually reduces in a length direction of its center. The nozzle body 10 has the hemi-spherical first space part 13 formed at the front end while connecting with the passageway 12. The guide groove 16 is formed upside at a front end of the nozzle body 10 to be vertical with the passageway 12 and connects with the first space part 13.
A screw part 14 is formed in front around the nozzle body 10.
The nozzle tip 20 has a screw part 26 inside for coupling to the front of the nozzle body 10. The nozzle tip 20 has the second space part 22 of a semi sphere shape formed at its center from the rear. The second space part 22 has the guide groove 24 opened up. The second space part 22 has a passageway 28 passing toward the front of the nozzle tip. Thus, the nozzle body 10 and nozzle tip 20 are coupled with each other by each screw part 14 and 26.
At this time, the insert 30 of a sphere shape is inserted between the first space part 13 of the nozzle body
10 and the second space part 22 of the nozzle tip 20. The insert 30 has the taper-shaped nozzle hole 32 at its center, that is, has a jet part 32a of a small diameter and an inflow part 32b of a large diameter. The nozzle hole 32 is in line with the passageway 12 of the nozzle body 10 with the same or like taper.
The insert 30 is rotated centering a pin shaft 35 by a predetermined rotating unit. The rotating unit can be constructed by a grip of various shapes protruding outside and a turn unit. The wrench hole 34 is provided on the pin shaft 35 as shown in the drawings, thus enabling a wrench 1 to simply and conveniently rotate the insert 30 at the outside.
The insert 30 rotated by the rotating unit as above changes a direction of the tapered nozzle hole 32 and is selectively adjusted with respect to the passageway 12 of the nozzle body 10.
Operation of an exemplary embodiment of the present invention constructed as above is described below.
When the nozzle hole 32 of the insert 30 is set to a normal direction as in FIG. 4A, a molten resin can be injected into a mold while an injection molding work goes on.
If the nozzle hole 32 of the insert 30 is stopped by a foreign substance contained in raw materials and the like during work, the wrench 1 is fitted into the wrench hole 34 through the guide grooves 16 and 24 and the insert 30 is rotated by 180° using the wrench 1.
By doing so, as in FIG. 4B, the insert 30 is arranged such that the jet part 32a of a small diameter is in line with the passageway 12 of the nozzle body 10. Thus, the foreign substance stopping the nozzle hole is simply discharged outside by a strong pressure of a molten resin.
Then, the insert 30 is restored to an original position and then, the injection molding work goes on.
While the present invention has been described and illustrated herein with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention. Thus, it is intended that the present invention covers the modifications and variations of this invention that come within the scope of the appended claims and their equivalents .
Advantageous Effects According to the present invention, a nozzle for an injection molding machine with a foreign substance removal function according to an exemplary embodiment of the present invention is to bore a stopped nozzle hole with no difficulty by simply changing a direction of the nozzle hole although the nozzle hole is stopped during an injection molding work. Thus, upon damage of the nozzle, the nozzle can reduce an exchange cost and a worker loss, prevent a failure of products with no work discontinuity, and greatly enhance productivity.

Claims

Claims
1. A nozzle for an injection molding machine with a foreign substance removal function, the nozzle comprising: a nozzle body 10 having a first space part 13 of a half spherical shape having a passageway whose diameter gradually reduces as going to the front along the center and formed at its front end, and having a guide groove 16 formed at an upper end to be vertical with the passageway; a nozzle tip 20 having a second space part 22 of a half spherical shape coupled to the front of the nozzle body and formed at its center, and having a guide groove 24 formed at an upper part of the second space part 22; an insert 30 inserted between the first space part 13 of the nozzle body and the second space part 22 of the nozzle tip and having a nozzle hole 32 of a taper shape at its center; and a rotating unit formed at the insert and rotating the insert.
2. The nozzle of claim 1, wherein a wrench hole is provided as the rotating unit at an upper part of the insert 30.
PCT/KR2008/005957 2008-10-09 2008-10-09 Nozzle for injection molding machine with foreign substance removal function WO2010041782A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/KR2008/005957 WO2010041782A1 (en) 2008-10-09 2008-10-09 Nozzle for injection molding machine with foreign substance removal function
CN2008801307772A CN102123842A (en) 2008-10-09 2008-10-09 Nozzle for injection molding machine with foreign substance removal function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2008/005957 WO2010041782A1 (en) 2008-10-09 2008-10-09 Nozzle for injection molding machine with foreign substance removal function

Publications (1)

Publication Number Publication Date
WO2010041782A1 true WO2010041782A1 (en) 2010-04-15

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ID=42100722

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/005957 WO2010041782A1 (en) 2008-10-09 2008-10-09 Nozzle for injection molding machine with foreign substance removal function

Country Status (2)

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CN (1) CN102123842A (en)
WO (1) WO2010041782A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107618152A (en) * 2017-02-07 2018-01-23 宁波三顺机械设备科技有限公司 Injection machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102765163B (en) * 2012-08-03 2014-07-02 镒生电线塑料(昆山)有限公司 Anti-blocking device for injection molding machine nozzle and mould feed points
CN104960146A (en) * 2015-08-06 2015-10-07 苏州市博奥塑胶电子有限公司 Injection molding machine sprinkler cleaning device
CN109382972A (en) * 2018-12-03 2019-02-26 和卓喷嘴阀门系统（宁波）有限公司 A kind of forming method of shut-off nozzles and the shut-off nozzles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06206240A (en) * 1993-01-12 1994-07-26 Fuji Photo Film Co Ltd Filter nozzle device of injection molding machine
KR950004239Y1 (en) * 1992-03-05 1995-05-24 윤석헌 Injection nozzle
KR20070107496A (en) * 2006-05-03 2007-11-07 (주)대호스크류 Filter nozzle for kneading and filtration of molten resin
KR20090002536A (en) * 2007-06-28 2009-01-09 남준욱 Nozzle for injector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950004239Y1 (en) * 1992-03-05 1995-05-24 윤석헌 Injection nozzle
JPH06206240A (en) * 1993-01-12 1994-07-26 Fuji Photo Film Co Ltd Filter nozzle device of injection molding machine
KR20070107496A (en) * 2006-05-03 2007-11-07 (주)대호스크류 Filter nozzle for kneading and filtration of molten resin
KR20090002536A (en) * 2007-06-28 2009-01-09 남준욱 Nozzle for injector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107618152A (en) * 2017-02-07 2018-01-23 宁波三顺机械设备科技有限公司 Injection machine

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