KR102047448B1 - Injection molding apparatus - Google Patents

Abstract

The present invention relates to an injection molding apparatus, capable of performing injection molding while allowing movement of a movable mold through a linear motion of a shutter or supporting the movable mold. The injection molding apparatus comprises: a frame; a fixed mold which is fixed to the frame to form a part of a cavity for molding, and to which a high-temperature resin is supplied; a mold housing which is installed in the frame to be able to move; a movable mold which is coupled to the mold housing to be able to move, and moves forward and backward to be in close contact with the fixed mold or to be separated from the fixed mold; a shutter which allows a linear motion of the movable mold while connecting the movable mold to the mold housing to be able to move, and fixes the movable mold in close contact with the fixed mold to the mold housing in a state in which movement of the movable mold is prevented; and a compression member which presses the mold housing at high pressure to compress the movable mold to the fixed mold.

Description

Injection Molding Equipment {INJECTION MOLDING APPARATUS}

The present invention relates to an injection molding apparatus, and more particularly, to an injection molding apparatus capable of performing injection molding while allowing the movement of the movable mold through the linear movement of the shutter or supporting the movable mold.

In general, an injection molding apparatus injects a molten resin into a barrel at a high pressure to fill a cavity formed in a mold apparatus, and then cools and solidifies the molten resin in a cavity to produce a molded article. Device.

Such an injection molding apparatus includes a mold apparatus in which a cavity is formed, a driving apparatus for advancing the mold apparatus back and forth, and an injection apparatus for injecting molten resin into the mold apparatus.

The injection molding apparatus has conventionally applied a technique for moving the mold apparatus back and forth using a hydraulic apparatus mainly for moving the mold apparatus.

For example, the injection molding apparatus according to the prior art is a configuration in which the movable mold is moved back and forth by the hydraulic cylinder for high speed movement, and the movable mold is pressed by the high pressure piston for high pressure compression after being in close contact with the fixed mold.

In the configuration for high pressure compression as described above, the injection molding apparatus of the prior art pressurized the movable mold through the configuration of the shutter and the shutter support rod to rotate.

Specifically, the shutter support rod is completely withdrawn from the shutter while moving toward the stationary mold together with the movable mold, and the shutter is configured to support the shutter support rod through a rotational movement by a separate cylinder after the shutter support rod is pulled out.

That is, the injection molding apparatus according to the prior art is fixed while the movable mold is moved by the high-speed moving hydraulic cylinder, and the movable mold is pressed through the shutter support rod as the high pressure piston presses the shutter while the shutter is rotated by the cylinder. It is a configuration that is pressed against the mold.

Since the shutter is configured to support or open the shutter support rod through the rotational movement, there is a problem in that the injection process is increased by increasing the stroke of the cylinder.

Therefore, there is a need for a new injection molding apparatus to overcome the problems of the prior art.

Republic of Korea Patent Publication No. 10-1688206

The present invention has been created to improve the problems of the prior art as described above, in the compression of the movable mold in close contact with the fixed mold at a high pressure to allow the movement of the movable mold through a linear movement, rather than a rotational movement of the shutter or movable mold It is an object of the present invention to provide an injection molding apparatus capable of performing injection molding while supporting the mold.

Specifically, an object of the present invention is to provide an injection molding apparatus capable of shortening the stroke of the shutter cylinder by opening and closing the movement of the shutter support rod through the linear movement of the shutter, and ultimately shortening the process time.

It is also an object of the present invention to provide an injection forming apparatus which can stably guide the movement of the shutter and which can stably press and compress the movable mold supported by the shutter.

Injection molding apparatus according to an embodiment of the present invention for achieving the above object, the frame; A fixed mold fixed to the frame to form a part of a cavity for molding and supplied with a high temperature resin; A mold housing movably installed in the frame; A movable mold coupled to the mold housing so as to move forward and backward and close to the fixed mold or spaced apart from the fixed mold; A shutter which permits linear movement of the movable mold while movably connecting the movable mold to the mold housing and fixes the movable mold in close contact with the fixed mold in a state where movement is prevented in the mold housing; And a pressing member pressurizing the mold housing to a high pressure to press the movable mold to the fixed mold, wherein the shutter slides in a housing drawing hole formed in the mold housing with one end fixed to the movable mold. A shutter supporting rod which is coupled to guide the movement of the movable mold while advancing back and forth with the movable mold and withdrawn from the housing drawing hole of the mold housing when the movable mold is in close contact with the fixed mold; It is installed to be movable between the mold housing and the shutter support rod to open and close the housing outlet hole while linearly moving in a direction orthogonal to the shutter support rod, and when the shutter support rod is withdrawn from the housing outlet hole, A shutter support plate which allows the pressing of the shutter support rod and the movable mold by the pressing of the mold housing by supporting an end of the shutter supporting rod while moving to shield the housing drawing hole; And a shutter cylinder which opens and closes the housing outlet hole while advancing and retreating the shutter support plate, wherein the shutter support plate is formed with a shutter outlet hole through which the shutter support rod is inserted to be pulled out and coupled to the shutter support plate. The drawing hole may be in communication with the housing drawing hole or may shield the housing drawing hole.

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In addition, the shutter may further include a shutter guide for limiting the movement distance of the shutter support plate while guiding the movement of the shutter support plate.

The shutter guide may include: a guide protrusion protruding from the mold housing to support the shutter support plate to be movable; And a guide protrusion holder formed in a long hole shape on the shutter support plate to be inserted into the guide protrusion, and formed to have a length corresponding to the movement distance of the shutter support plate and caught by the guide protrusion when the shutter support plate moves.

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Injection molding apparatus according to an embodiment of the present invention, when pressing the movable mold in close contact with the fixed mold at high pressure to move the movable mold while opening and closing the housing drawing hole of the mold housing through a linear movement, not a rotational movement of the shutter. By allowing or supporting the movable mold, the stroke of the shutter can be shortened, and thus the injection process time can be shortened.

In addition, since the shutter guide constituting the shutter guides the movement of the shutter support plate to limit the moving distance, the shutter support plate can be stably moved to accurately open and close the housing drawing hole of the mold housing.

In addition, in the injection molding apparatus using a ball screw according to an embodiment of the present invention, the high pressure piston constituting the pressing member presses the mold housing together with the shutter, so that the movable mold may be smoothly pressed onto the stationary mold.

The effects obtainable in the disclosed embodiments are not limited to the effects mentioned above, and other effects not mentioned above are apparent to those skilled in the art to which the embodiments disclosed from the following description belong. Can be understood.

1 is a configuration diagram showing an injection molding apparatus according to an embodiment of the present invention is a configuration diagram showing a state in which the movable mold is spaced apart from the stationary mold.
2 is a block diagram showing an injection molding apparatus according to an embodiment of the present invention is a block diagram showing a state in which the movable mold is in close contact with the fixed mold.
3 is an operating state diagram illustrating a state in which the shutter according to the embodiment of the present invention opens the housing drawing hole of the mold housing.
4 is an operating state diagram illustrating a state in which a shutter according to an embodiment of the present invention closes the housing drawing hole of the mold housing.
5 is a configuration diagram showing another embodiment of the crimping member of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. In the following description of the present invention, detailed descriptions of well-known general functions or configurations will be omitted.

Embodiments according to the concept of the present invention may be variously modified and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the present specification or application. However, this is not intended to limit the embodiments in accordance with the concept of the present invention to a particular disclosed form, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "immediately between," or "neighboring to," and "directly neighboring to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. As used herein, the terms "comprise" or "having" are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof that is described, and that one or more other features or numbers are present. It should be understood that it does not exclude in advance the possibility of the presence or addition of steps, actions, components, parts or combinations thereof.

1 is a block diagram showing an injection molding apparatus according to an embodiment of the present invention is a block diagram showing a state in which the movable mold is spaced apart from the stationary mold, Figure 2 shows an injection molding apparatus according to an embodiment of the present invention It is a block diagram which shows the state which a movable mold contacted with the fixed mold as a block diagram. 3 is an operation state diagram showing a state in which the shutter according to an embodiment of the present invention opened the housing drawing hole of the mold housing, Figure 4 is a shutter according to an embodiment of the present invention the housing drawing hole of the mold housing Fig. 5 is a configuration diagram showing another embodiment of the crimping member of the present invention.

Injection molding apparatus according to an embodiment of the present invention to shorten the process time compared to the existing while performing a plastic injection process, with a specific configuration

As shown in FIG. 1, the frame 100, the fixed mold 200, the mold housing 300, the movable mold 400, the shutter 500, and the pressing member 600 may be configured.

The frame 100 is a component that provides support while forming an installation site where the components of the present invention are installed.

The frame 100 may be fixed to a separate case or die forming the outer shape of the injection molding apparatus.

Here, the frame 100 is formed of a plurality of rods as shown in Figures 1 and 2 so that the fixed mold 200 to be described later is fixed while the mold housing 300 and the movable mold 400 to be described later moveable Can be combined.

In addition, the frame 100 may satisfy any configuration provided that the mold housing 300 and the movable mold 400 can be movably coupled while providing a fixed portion of the fixed mold 200.

The fixed mold 200 is a component for molding the resin in a predetermined form together with the movable mold 400.

Specifically, the fixed mold 200 is fixedly installed on one side of the frame 100, a portion of the cavity corresponding to the shape of the molded article may be formed to form a cavity with the movable mold 400 to be described later.

The fixed mold 200 may be connected to a resin supply device (not shown) so that a high temperature resin may be supplied to the cavity.

That is, the high temperature resin is supplied to the cavity through the stationary mold 200 in a state in which the stationary mold 200 and the movable mold 400 are in close contact with each other, and are pressed and set by pressing the pressing member 600 to be described later. After being molded into, it can be separated and solidified by the reverse of the movable mold 400.

The mold housing 300 is a component that is movably installed in the frame 100 and is pressurized to a high pressure by the pressing member 600 to be described later.

The mold housing 100 may be coupled to the movable mold 400 to be described later to be movable in the fixed mold 200, the shutter support plate 520 constituting the shutter 500 will be described later movable mold 400 It can be combined in a direction perpendicular to the moving direction of.

Specifically, the mold housing 300 is coupled to be movable along the longitudinal direction of the frame 100 and may be moved by the pressing member 600 to be described later.

In addition, as shown in Figure 4, the mold housing 300 is formed through the housing drawing hole 310 through the shutter support rod 510 to be described later slidably coupled to the movable mold 400, the movable mold 400 Allows linear movement of.

That is, the mold housing 300 may allow the movable mold 400 to be in close contact with the fixed mold 200 by allowing only the movable mold 400 to move, and toward the fixed mold 200 by the pressing member 600 described later. While moving, the movable mold 400 may be pressed to compress the fixed mold 200.

The movable mold 400 is a component that is closely coupled to the fixed mold 200 or spaced apart from the fixed mold 200 while moving forward and backward coupled to the mold housing 300.

Specifically, the movable mold 400 forms a cavity together with the fixed mold 200, and may be moved back and forth by the operation of the high speed cylinder 350 to be movable in the frame 100.

In addition, the movable mold 400 may be coupled to the housing draw hole 310 of the mold housing 300 through the shutter support rod 510 to be described later.

That is, the movable mold 400 is coupled to the housing draw-out hole 310 of the mold housing 300 through the shutter support rod 510 so as to be movable alone by the operation of the high-speed cylinder 350 and the fixed mold 200. )

In addition, the movable mold 400 may be pressed to the fixed mold 200 while being pressed at high pressure by the shutter 500 by the movement of the mold housing 300 in a state in close contact with the fixed mold 300.

The shutter 500 allows the linear movement of only the movable mold 400 while movably connecting the movable mold 400 to the mold housing 300, and the movable mold 400 is in close contact with the fixed mold 200. The movable mold 400 is fixed to the mold housing 300 in a state where movement is prevented, thereby enabling the pressurization of the movable mold 400 by the movement of the mold housing 300.

Specifically, the shutter 500 may include a shutter support rod 510, a shutter support plate 520, and a shutter cylinder 530, as shown in FIGS. 1 and 2.

The shutter support rod 510 is a component for movably coupling the movable mold 400 to the mold housing 300 as described above, while providing a pressing portion of the mold housing 300 by the pressing member 600. The movable mold 400 is a component that compresses the fixed mold 200.

Specifically, the shutter support rod 510 is slidably coupled to the housing outlet hole 310 of the mold housing 300 in a state where one end is fixed to the movable mold 400 so as to be movable by the operation of the high speed cylinder 350. It is possible to guide the movement of the movable mold 400 while moving forward and backward with the (400).

In addition, the shutter support rod 510 may be separated from the mold housing 300 while being completely drawn from the housing drawing hole 310 of the mold housing 300 when the movable mold 400 is in close contact with the fixed mold 200.

The shutter support plate 520 allows the extraction of the shutter support rod 510 while opening and closing the housing drawing hole 310 of the mold housing 300 or the end of the shutter support rod 510 to be supported by the mold housing 300. Element.

The shutter support plate 520 is installed to be movable between the mold housing 300 and the shutter support rod 510 as shown in FIGS. 1 and 2, while linearly moving in a direction perpendicular to the shutter support rod 510. The drawing hole 310 can be opened and closed.

Specifically, the shutter support plate 520 moves through the linear movement by the shutter cylinder 530 which will be described later when the shutter support rod 510 is drawn out from the housing drawing hole 310 of the mold housing 310 (the housing drawing hole ( The end of the shutter support rod 510 may be supported while shielding 310.

Accordingly, the shutter support plate 520 may allow pressurization of the shutter support rod 510 and the movable mold 400 while being pressed through the movement of the mold housing 300 by the pressing member 600 which will be described later.

The shutter cylinder 530 may open and close the housing drawing hole 310 of the mold housing 300 while advancing the shutter support plate 520 forward and backward.

In summary, the shutter support rod 510 is withdrawn from the housing drawing hole 310 while moving together with the movable mold 400 by the operation of the high speed cylinder 350, and the shutter support plate 520 has the shutter support rod 510 in the housing. After being drawn out from the drawing hole 310, the end of the shutter supporting rod 510 may be supported while being moved by the shutter cylinder 530 to shield the housing drawing hole 310.

Here, as shown in FIGS. 3 and 4, the shutter support plate 520 is formed with a shutter outlet hole 521 which is inserted into and coupled to the shutter support rod 510 so as to be coupled to the shutter support rod 510. 310 can be opened and closed.

In detail, the shutter support plate 520 may open the housing drawing hole 310 while moving the shutter drawing hole 521 to the housing drawing hole 310 while moving by the shutter cylinder 530. The housing extraction hole 310 may be shielded while facing the housing extraction hole 310.

That is, the shutter support plate 520 may allow movement of the shutter support rod 510 and the movable mold 400 by communicating the shutter outlet hole 521 with the housing outlet hole 310 as shown in FIG. 3. As shown in FIG. 4, after the shutter support rod 510 is drawn out, the shutter support rod 510 may be moved by the shutter cylinder 530 to shield the housing outlet hole 310 through the flat surface to support the end of the shutter support rod 510. .

Meanwhile, as shown in FIGS. 3 and 4, the shutter support plate 520 may be guided by the shutter guide 550, thereby limiting the moving distance.

In detail, the shutter guide 550 may include a guide protrusion 551 and a guide protrusion holder 552.

The guide protrusion 551 may protrude from the mold housing 300 to support the shutter support plate 520 so as to be movable.

The guide protrusion holder 552 is formed in the shutter support plate 520 in the form of a long hole and is fitted into the guide protrusion 551, and is formed to have a length corresponding to the moving distance of the shutter support plate 520, thereby moving the shutter support plate 520. The movement of the shutter support plate 520 may be restricted while being caught by the guide protrusion 551.

Here, the guide protrusion holder 552 may be formed in the rail not shown along the longitudinal direction to guide the movement of the shutter support plate 520 in a straight line, the guide protrusion 551 in the state in which the rail is fitted to the rail The slider that moves along may protrude.

The pressing member 600 is a component that compresses the movable mold 400 to the fixed mold 200 by pressing the mold housing 300 at a high pressure.

That is, the pressing member 600 presses the mold housing 300 toward the stationary mold 200 in a state in which the shutter support plate 520 shields the housing drawing hole 310, and thus the shutter support plate 520 and the shutter support rod 510. Through pressing the movable mold 400 can be pressed to the fixed mold (200).

The pressing member 600 may press the movable mold 400 to the fixed mold 200 while operating after the molten resin is injected into the cavity while being in close contact with the movable mold 400 and the fixed mold 200. .

For example, the pressing member 600 may include a high pressure piston 610 installed at the rear of the mold housing 300 as shown in FIGS. 1 and 2.

Specifically, the high pressure piston 610 may be operated by hydraulic pressure or pneumatic pressure, and the shutter support plate 520 and the shutter by pressing the mold housing 300 toward the stationary mold 200 while operating in a state installed in the frame 100. By pressing the movable mold 400 through the support rod 510 can be pressed to the fixed mold (200).

Alternatively, the pressing member 600 may be configured to include a worm gear 650 and a worm shaft 660 as shown in FIG.

The worm gear 650 is formed in a sawtooth shape along the longitudinal direction on the outer circumferential surface of the mold housing 300.

The worm shaft 660 forms a rotating shaft of the pressurized motor 661 and is formed with a screw along the axial direction so as to be engaged with the worm gear 650.

That is, the worm shaft 660 compresses the movable mold 400 with the stationary mold 200 through the shutter support plate 520 and the shutter support rod 510 by moving the mold housing 300 while moving the worm gear 650 forward and backward. Can be.

It describes the operation and operation of the present invention including such components.

When the movable mold 400 is in close contact with the stationary mold 200 as shown in FIG. 3, the movable mold 400 may be closely adhered to the stationary mold 200 while being advanced by the operation of the high speed cylinder 350.

At this time, the shutter support rod 510 is completely withdrawn from the housing drawing hole 310 and the shutter drawing hole 521 while moving together with the movable mold 400.

The molten resin is injected into the cavity of the stationary mold 200 and the movable mold 400 through a resin injector (not shown).

After the resin is injected, the shutter support plate 520 moves by the operation of the shutter cylinder 530 to face the shutter support rod 510 through the flat surface while shielding the housing outlet hole 310.

In addition, the pressing member 600 pressurizes the mold housing 300, and the mold housing 300 presses the movable mold 400 through the shutter support rod 510 while moving together with the shutter support plate 520. By pressing 400 to the fixed mold 200, the resin can be molded into a predetermined shape.

When the molding of the resin is completed, the pressing member 600 reverses the mold housing 300, and the shutter support plate 520 returns to the original position by the shutter cylinder 530, and the shutter drawing hole 521 and the housing drawing hole ( 310).

Then, the movable mold 400 is reversed by the operation of the high-speed cylinder 350, the shutter support rod 510 moves to the shutter drawing hole 521 and the housing drawing hole 310 while moving together with the movable mold 400. By drawing, the movable mold 400 may be spaced apart from the fixed mold 200.

Accordingly, the worker separates the molded resin from the cavity of the fixed mold 200.

As described above, according to the injection molding apparatus according to the present invention, in pressing the movable mold 400 in close contact with the fixed mold 200 at a high pressure, the mold housing is not a rotational movement of the shutter 500 but a linear movement. Allowing the movement of the movable mold 400 or supporting the movable mold 400 while opening and closing the housing drawing hole 310 of 300 may reduce the injection process time by shortening the stroke of the shutter 500.

The above-described embodiments are for illustrative purposes, and those of ordinary skill in the art to which the above-described embodiments belong may easily change to other specific forms without changing the technical spirit or essential features of the above-described embodiments. I can understand. Therefore, it is to be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope to be protected by the present specification is represented by the following claims rather than the above description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

100: frame
200: fixed mold
300: mold housing
400: movable mold
500: shutter
510: shutter support rod
520: shutter support plate
530: shutter cylinder
550: Shutter Guide
551: guide protrusion
552: guide projection holder
600: crimping member
610: high pressure piston

Claims (6)

frame;
A fixed mold fixed to the frame to form a part of a cavity for molding and supplied with a high temperature resin;
A mold housing movably installed in the frame;
A movable mold coupled to the mold housing so as to move forward and backward and close to the fixed mold or spaced apart from the fixed mold;
A shutter which permits linear movement of the movable mold while movably connecting the movable mold to the mold housing and fixes the movable mold in close contact with the fixed mold in a state where movement is prevented in the mold housing; And
A pressing member for pressing the mold housing to a high pressure to press the movable mold to the fixed mold;
The shutter is,
The movable mold is slidably coupled to a housing drawing hole formed in the mold housing with one end fixed to the movable mold to guide the movement of the movable mold while moving forward and backward with the movable mold, and the movable mold is fixed to the fixed mold. A shutter support rod drawn out from the housing drawing hole of the mold housing when in close contact;
It is installed to be movable between the mold housing and the shutter support rod to open and close the housing outlet hole while linearly moving in a direction orthogonal to the shutter support rod, and when the shutter support rod is withdrawn from the housing outlet hole, A shutter support plate which allows the pressing of the shutter support rod and the movable mold by the pressing of the mold housing by supporting an end of the shutter supporting rod while moving to shield the housing drawing hole; And
It includes a shutter cylinder for opening and closing the housing drawing hole while advancing the shutter support plate forward and backward,
The shutter support plate,
And a shutter drawing hole, through which the shutter support rod is inserted and coupled to be pulled out, to move the shutter drawing hole to the housing drawing hole or to shield the housing drawing hole while being moved by the shutter cylinder.
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The shutter is,
Injection shutter device further comprising a shutter guide for limiting the movement distance of the shutter support plate while guiding the movement of the shutter support plate.
The method of claim 4, wherein
The shutter guide,
A guide protrusion protruding from the mold housing to movably support the shutter support plate; And
And a guide protrusion holder formed on the shutter support plate to be inserted into the guide protrusion and coupled to the guide protrusion, and formed to have a length corresponding to the movement distance of the shutter support plate and caught by the guide protrusion when the shutter support plate moves.
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