KR20150033861A - Injection molding apparatus - Google Patents

Injection molding apparatus Download PDF

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Publication number
KR20150033861A
KR20150033861A KR20130113651A KR20130113651A KR20150033861A KR 20150033861 A KR20150033861 A KR 20150033861A KR 20130113651 A KR20130113651 A KR 20130113651A KR 20130113651 A KR20130113651 A KR 20130113651A KR 20150033861 A KR20150033861 A KR 20150033861A
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KR
South Korea
Prior art keywords
upper mold
take
core
pin
slide core
Prior art date
Application number
KR20130113651A
Other languages
Korean (ko)
Inventor
김학도
이환수
이현섭
Original Assignee
삼성전자주식회사
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 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR20130113651A priority Critical patent/KR20150033861A/en
Publication of KR20150033861A publication Critical patent/KR20150033861A/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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/44—Removing or ejecting moulded articles for undercut articles

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

Abstract

Disclosed is an injection molding apparatus having an improved structure for facilitating the ejection of an injection product. The injection molding apparatus includes an upper mold, a lower mold disposed opposite to the upper mold and forming a cavity having a shape corresponding to an injection mold to be manufactured in association with the upper mold, a slide core forming the cavity in combination with the upper mold and the lower mold, And a take-out core which is coupled to the core and has a take-out pin for lifting up the molded body when the upper mold and the slide core are separated from the cavity.

Description

[0001] INJECTION MOLDING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection molding apparatus, and more particularly, to an injection molding apparatus having an improved structure for improving durability.

Generally, an injection mold is a device for injecting a molten resin into a cavity formed in a mold to produce an injection mold corresponding to the cavity.

The injection molds are coupled to each other, and include upper and lower molds provided with cavities of a shape corresponding to the shape of the injection object to be manufactured, and an injection device for injecting the molten resin into the cavities.

Further, the injection mold includes a cooling flow passage through which the cooling fluid passes, and arrangements for separating the injection product produced in the cavity from the mold. In other words, it includes a configuration of a mold and a plate, a space block, and the like for pushing out the mold from the mold, and the injection mold must have a space for installing these components.

One aspect of the present invention provides an injection molding apparatus having an improved structure to reduce the risk of breakage of the take-out pin.

Another aspect of the present invention provides an injection molding apparatus having an improved structure for facilitating the ejection of an injection product.

An injection molding apparatus according to an aspect of the present invention includes an upper mold, a lower mold disposed opposite to the upper mold and forming a cavity having a shape corresponding to an injection product to be manufactured in combination with the upper mold, a cavity formed with the upper mold and the lower mold, And a take-out core coupled to the slide core, the take-out core having a take-out pin for lifting up the molded body when the upper mold and the slide core are separated from the cavity.

An engaging hole penetrating through the slide core and the take-out core is fastened to an angular fin so that the angular fin can move. The angular pin can be coupled to the upper mold so as to rise integrally with the upper mold.

The angular pin may be coupled to the fastener so that the slide core is inclined in a first direction away from the cavity from the upper mold.

When the angular pin is raised integrally with the upper mold, the slide core and the take-out core can move in the first direction.

The take-out pin can move along a guide provided on the take-out core.

The guide may be formed such that the slide core is inclined toward the upper mold along a second direction in which the cavity is formed.

And a coupling groove is formed on one surface of the extraction pin so as to be recessed toward the inside of the extraction pin, and the coupling groove is coupled to the guide and moves along the guide.

An injection molding apparatus according to an embodiment of the present invention includes an upper mold, a lower mold disposed opposite to the upper mold and forming a cavity having a shape corresponding to an upper mold and an injection mold to be manufactured in combination with the upper mold, A take-out core coupled to a lower side of the slide core and provided with a take-out pin for lifting up the injection object, and a take-out core having one end coupled to the upper mold and the other end connected to the slide core And an angular pin which is fastened to a fastening hole passing through the take-out core and moves integrally with the upper mold.

Wherein the take-out core is formed with a guide which is slanted toward the upper mold along the direction in which the slide core is engaged with the upper mold and the lower mold to form the cavity and is recessed toward the inside of the take- And the fastening groove formed in the guide groove is coupled to the guide.

The other end of the take-out pin is provided with a seating part on which the molded article is seated, and the seating part can form the cavity together with the upper, lower and slide cores.

When the angular pin is raised integrally with the upper mold, the slide core and the take-out core move in a first direction away from the cavity, and the take-out pin rises along the guide to lift the mold.

The angular pin may be fastened to the fastening hole so as to be inclined in the first direction from the upper mold.

It is possible to omit the ejector unit including the spindle, the flat plate, and the space block, the structure of the injection molding apparatus is simple, the length of the take-out pin can be kept short, and the fear of breakage of the take-

Since the take-out pin operates integrally with the slide core, it is possible to shorten the take-out time of the molded body and to easily take out the molded body.

1 is a cross-sectional view showing a structure in which a slide core and a take-out core are combined in an injection molding apparatus according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view illustrating a state in which the upper mold, the lower mold, and the slide core of the injection molding apparatus according to the embodiment of the present invention are engaged;
3 is a cross-sectional view showing a state in which the upper mold of the injection molding apparatus and the slide core are separated from the lower mold according to the embodiment of the present invention
4 is a cross-sectional view showing a state in which the upper mold and the slide core of the injection molding apparatus according to the embodiment of the present invention are completely separated from the lower mold,

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

FIG. 1 is a cross-sectional view illustrating a structure in which a slide core and a take-out core are coupled to each other in an injection molding apparatus according to an embodiment of the present invention. FIG. 2 is a cross- Fig.

1 and 2, the injection molding apparatus 1 may include an upper mold 10, a lower mold 20, a slide core 30, and a take-out core 40.

The lower mold 20 is arranged opposite to the upper mold 10 and can be combined with the upper mold 10 to form a cavity 70 having a shape corresponding to the molded product 80 to be manufactured.

The slide core 30 can be combined with the upper mold 10 and the lower mold 20 to form a cavity 70 having a shape corresponding to the undercut 81 of the injection molding 80 to be manufactured.

The take-out core 40 is coupled to the lower side of the slide core 30 so as to move integrally with the slide core 30. The take-out core 50 may be provided with a take-out pin 50 for lifting up the injection molded body 80 when the upper mold 10 and the slide core 30 are separated from the cavity 70. The take-out pin 50 can move along the guide 41 provided on the take-out core 40. The guide 41 is configured such that the slide core 30 is engaged with the upper mold 10 and the lower mold 20 and is tilted toward the upper mold 10 along the second direction B in which the cavity 70 is formed. As shown in FIG. The guide 41 may have a shape protruding toward the take-out pin 50.

The take-out pin 50 may include a seat portion 52 and a fastening groove 51.

The seating part 52 may be formed at one end of the extraction pin 50 and the seating part 52 may be formed with the upper mold 10, the lower mold 20 and the slide core 30 to form the cavity 70 . A protrusion 53 extending toward the slide core 30 may be formed in the seating part 52. The upper mold 10, the lower mold 20, the slide core 30 and the protrusion 53 are combined to form a cavity 70 having a shape corresponding to the undercut 81 of the injection molding 80. [

The other end of the take-out pin 50 may have a fastening groove 51 formed therein. The engaging groove 51 may have a shape recessed toward the inside of the takeout pin 50 and may move along the guide 41 by being engaged with the guide 41 protruding toward the takeout pin 50. [

A support portion 42 may be provided on the lower side of the guide 41. Specifically, the support portion 42 may be provided on the take-out core 40 so as to be parallel to the guide 41. One end of the take-out pin 50 is supported by the support portion 42.

The injection molding apparatus 1 may further include an injection apparatus (not shown) for injecting the molten resin into the cavity 70.

The upper die 10 is movable up and down on the upper side of the lower die 20 disposed on the ground and the upper die 10 is coupled with the lower die 20 as it moves up and down, Can be spaced apart. The slide core 30 is installed between the upper mold 10 and the lower mold 20 so as to be movable left and right and as the upper mold 10 moves up and down, Or may be spaced apart from the upper mold 10 and the lower mold 20.

The injection molding apparatus 1 may further include an angular fin 60.

The angular pin 60 can be movably coupled to the fastening hole 31 passing through the slide core 30 and the take-out core 40. The angular pin 60 can be inclined downward along the first direction A in which the slide core 30 is separated from the cavity 70. [ The fastening hole 31 may also have a downwardly inclined shape along the first direction A to correspond to the shape of the angular pin 60.

One end of the angular pin 60 is coupled to the upper die 10 and can move integrally with the upper die 10. The angular pin 60 is lifted along with the upper die 10 along the fastening hole 31 and the angular pin 60 is fastened to the fastening hole 31 when the upper die 10 is lowered. Along with the upper mold 10. The slide core 30 and the take-out core 40 can move in the first direction A when the angular pin 60 is raised integrally with the upper mold 10. [

The upper mold 10, the lower mold 20 and the slide core 30 are coupled to each other so that the cavity 70 is formed between the upper mold 10, the lower mold 20 and the slide core 30, The molten resin is injected into the cavity 70.

3 is a cross-sectional view illustrating a state in which the upper mold and the slide core of the injection molding apparatus according to the embodiment of the present invention are separated from the lower mold.

3, when the angular pin 60 is lifted integrally with the upper mold 10, the slide core 30 and the take-out core 40 move in the first direction A away from the cavity 70, The take-out pin 50 ascends along the guide 41 which is inclined upward along the second direction B corresponding to the direction opposite to the first direction A.

The molten resin is hardened in the cavity 70 and the upper mold 10 and the angular fin 60 are raised after the completion of the production of the injection molding 80 in the cavity 70. As a result, The core 40 moves in the first direction A and the takeout pin 50 moves upward along the second direction B.

FIG. 4 is a cross-sectional view illustrating an upper mold of the injection molding apparatus according to an embodiment of the present invention and a state in which the slide core is completely separated from the lower mold to take out the molded article.

4, when the upper die 10 rises, the angular pin 60 coupled to the upper die 10 also ascends integrally with the upper die 10. The slide core 30 and the take-out core 40 move in the first direction A when the angular pin 60 rises and the take-out pin 50 moves along the guide 41 provided on the take- And moves toward the upper mold 10 along the two directions (B). When the upper die 10, the lower die 20 and the slide core 30 are completely separated, the ejected product 80 is taken out in a state of being seated in the seating portion 52 of the extraction pin 50. Therefore, a separate device for separating the injection molded body 80 from the cavity 70 is not necessary.

The foregoing has shown and described specific embodiments. However, it should be understood that the present invention is not limited to the above-described embodiment, and various changes and modifications may be made without departing from the technical idea of the present invention described in the following claims .

1: injection molding apparatus 10: upper mold
20: Lower mold 30: Slide core
31: fastening hole 40: extraction core
41: Guide 42: Support
50: extraction pin 51: fastening groove
52: seat part 53:
60: Angular Fin 70: Cavity
80: Injection 81: Undercut

Claims (12)

avoirdupois;
A lower mold disposed opposite to the upper mold and forming a cavity having a shape corresponding to an upper mold to be manufactured in association with the upper mold;
A slide core coupled with the upper and lower molds to form the cavity; And
And a take-out core coupled to the slide core, the take-out core being provided with a take-out pin for lifting the molded body when the upper mold and the slide core are separated from the cavity. The method according to claim 1,
An engaging hole penetrating through the slide core and the take-out core is fastened so that an angular fin can move,
And the angular pin is coupled to the upper mold so as to rise integrally with the upper mold. 3. The method of claim 2,
And the angular pin is coupled to the fastening hole so that the slide core is inclined in a first direction in which the slide core is separated from the upper mold. The method of claim 3,
Wherein the slide core and the take-out core move in the first direction when the angular pin is raised integrally with the upper mold. The method according to claim 1,
And the take-out pin moves along a guide provided on the take-out core. 6. The method of claim 5,
Wherein the guide is formed such that the slide core is inclined toward the upper mold along a second direction in which the cavity is formed. The method according to claim 6,
And a fastening groove is formed on one surface of the takeout pin so as to be recessed toward the inside of the takeout pin,
Wherein the engaging groove is engaged with the guide and moves along the guide. avoirdupois;
A lower mold disposed opposite to the upper mold and forming a cavity having a shape corresponding to an upper mold to be manufactured in association with the upper mold;
A slide core forming a cavity having a shape corresponding to an undercut of the upper and lower molds;
A take-out core coupled to a lower side of the slide core and provided with a take-out pin for lifting up the molded body; And
And an angular pin which is coupled to the upper mold at one end and is engaged with a fastening hole passing through the slide core and the take-out core, and moves integrally with the upper mold. 9. The method of claim 8,
Wherein the take-out core is formed with a guide slanted toward the upper mold along the direction of forming the cavity by engaging with the upper mold and the lower mold,
And a fastening groove formed at one end of the take-out pin is coupled to the guide so as to be recessed toward the inside of the take-out pin. 10. The method of claim 9,
And the other end of the take-out pin is provided with a seating portion on which the injection-
Wherein the seat portion forms the cavity together with the upper die, the lower die and the slide core. 10. The method of claim 9,
The slide core and the take-out core move in a first direction away from the cavity when the angular pin is raised integrally with the upper mold,
And the take-out pin rises along the guide to lift up the injection molding. 12. The method of claim 11,
And the angular pin is fastened to the fastening hole so as to be inclined in the first direction from the upper mold.
KR20130113651A 2013-09-25 2013-09-25 Injection molding apparatus KR20150033861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130113651A KR20150033861A (en) 2013-09-25 2013-09-25 Injection molding apparatus

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Application Number Priority Date Filing Date Title
KR20130113651A KR20150033861A (en) 2013-09-25 2013-09-25 Injection molding apparatus

Publications (1)

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KR20150033861A true KR20150033861A (en) 2015-04-02

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KR20130113651A KR20150033861A (en) 2013-09-25 2013-09-25 Injection molding apparatus

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180042579A (en) * 2016-10-18 2018-04-26 이형채 injection molding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180042579A (en) * 2016-10-18 2018-04-26 이형채 injection molding

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