WO2014171723A1

WO2014171723A1 - Mould

Info

Publication number: WO2014171723A1
Application number: PCT/KR2014/003289
Authority: WO
Inventors: 신광자
Original assignee: Shin Kwang Ja
Priority date: 2013-04-17
Filing date: 2014-04-16
Publication date: 2014-10-23
Also published as: CN104107895A; CN104107895B

Abstract

The present invention relates to a mould, and more specifically relates to a technique which allows mould life to be extended by allowing damage and the like to the main core to be minimised even after use for a long time, because impacts acting on the main core are minimised during collision between a moulding liquid and the main core in a process in which the moulding liquid is injected under high pressure. Also, the present invention relates to a technique which allows harm to the moulded article during the separation process to also be minimised, because the structure of the injection pathway is improved such that the injection moulding parts can be separated easily and rapidly from the moulded article after moulding. Again, the present invention relates to a technique which allows moulded articles of various sizes to be moulded even when using a single mould, because the invention is adapted to allow the volume of the moulding space of the mould to be adjusted. Also, the present invention relates to a technique which not only allows smooth demoulding in the process of demoulding the moulded article from the mould but also in which, even if part of a moulded article lodges in the mould during the demoulding process, said part can easily be extracted from the mould even without disassembling the mould.

Description

mold

The present invention relates to a mold used for forming a metal product, and in particular, in the process of injecting the molding liquid into the mold at a high pressure, the life of the mold is minimized by minimizing the strength degradation of the molding core due to the collision between the molding liquid and the molding core. The present invention relates to a technology capable of extending the mold space and easily adjusting the size of the molding space so that the size of the molded product molded in the molding space can be easily produced according to the size of the molded product.

In general, the mold is a frame structure in which the shape and structure of the casting product are formed in an intaglio and embossed form when molding the casting product. It is injected into the molding space and proceeds to the cooling process.

The mold is composed of a first mold and a second mold facing each other, the main molding space is formed on the side facing the second mold of the first mold, and the main core on the side facing the main molding space of the second mold Consists of a protruding structure

In the state in which the main core of the second mold is inserted into the main molding space of the first mold, the molding product is molded by injecting the molding liquid through the gap between the main core and the main molding space.

At this time, the molding liquid is injected and filled in a predetermined amount through the injection path formed around the main molding space of the first mold, so that the molding liquid is injected at a strong pressure into the gap between the main molding space and the main core.

However, in the process of injection of the molding liquid into the gap between the main molding space and the main core under a strong pressure, the molding liquid is injected into the gap after the collision with the main core. Thus, the phenomenon in which the molding liquid repeatedly hits the main core may be repeated. In this case, the impact generated at the moment causes deformation and breakage of the main core, so that the second mold must be replaced with a new one, resulting in high productivity and cost burden.

In addition, after the molding is completed, the molding liquid filled in the injection furnace in the process of demolding the molded product from the first mold is demolded together with the molded product in a solidified state, and the molding part corresponding to the injection path (hereinafter referred to as 'injection molding part'). ') Is separated from the molded product through post-processing such as separate cutting after demolding.

However, since the depth of the injection path is generally the same, the connection point with the molded part of the injection molding part also has to be thickened.

Therefore, it is difficult to separate the boundary point between the molded part and the injection molded part in the separation process and takes a long time, and there is a high possibility that the surface of the molded part may be damaged during the separation process.

In addition, depending on the type of molded product, a through hole for forming a hollow tube is formed in one side of the main molding space of the first mold, and a molding liquid is injected into the through hole so that parts such as a hollow tube are molded.

At this time, even if the same molded article is intended to produce a molded article having a different length, such as a hollow tube in accordance with the specification, it is inevitable to form a part of various lengths or sizes using one mold, inevitably corresponding to each specification Since the mold must be used separately, the cost burden for the mold production is increased, and the productivity decrease due to the mold replacement is accompanied.

In addition, if molding a part such as an elongated hollow tube, when the molded part is demolded from the mold, if the molded part is moved in a straight line direction, the molded part can be smoothly escaped from the through hole. Otherwise, the molded part is broken in the process of exiting the through hole. Becomes a state fitted to the through hole.

In this case, the entire mold must be disassembled in order to remove the part inserted into the through hole, thereby causing a problem such as waste of time.

The present invention has been proposed to solve such problems of the prior art,

In the process of injecting the molding liquid at high pressure, the impact on the main core when the molding liquid collides with the main core is minimized, so that the damage of the main core can be minimized even if used for a long time, thereby extending the life of the mold. To provide a mold to ensure that.

In addition, by improving the structure of the injection furnace to provide a mold that can be easily and quickly separated from the molded part after molding and to minimize the damage phenomenon of the molded part in the separation process.

In addition, it is to provide a mold to be able to mold a molded article of various sizes with a single mold by controlling the space volume of the molding space of the mold.

In addition, it is possible to provide a mold that enables a smooth demoulding in the process of demolding the molded article from the mold, as well as to easily remove the mold from the mold even if a part of the molded article is inserted in the mold without disassembling the mold.

The present invention proposed for this,

A main molding space is formed at one side and a molding liquid injection path having a predetermined depth in communication with the outside is formed at one side of the main molding space, and an end portion of the molding liquid injection path is in communication with the main molding space. It includes a second mold facing the mold and the first mold and one side protrudes the main core inserted into the main molding space, the molding liquid is injected into the gap between the main molding space and the main core through the molding liquid injection passage In the mold to be

An impact relief inclined surface is formed at the end portion of the molding liquid inlet communicating with the main molding space, and injected into the main molding space after the molding liquid collides with the impact relaxing slope just before being injected into the main molding space. It is characterized by.

And the impact relief slope may be formed in the form inclined toward the second mold toward the connection point with the main molding space from the surface facing the second mold in the molding liquid injection passage.

An auxiliary impact mitigating groove is formed at a point facing the impact mitigating slope of the second mold, and the end of the impact mitigating slope and the end of the auxiliary impact mitigating groove are deviated from each other. Molding fluid may be injected into the gap between the main molding space and the main core through the gap between the impact relief slope and the secondary impact relief groove.

In addition, the auxiliary impact relief groove is formed in the form of a shape that is bent toward the first mold extends from the direction change inclined surface and the direction change inclined surface inclined in the same direction as the impact relief inclined surface, the end is the end of the impact relief slope It may include a shock absorbing surface formed to deviate from the.

And the discharge gap of the molding liquid is formed between the end of the impact absorbing surface and the end of the impact relief slope, the width of the discharge gap may be formed smaller than the depth of the injection molding liquid.

In addition, the inclined surface for changing direction and the inclined surface for impact alleviation may form an angle of 25 degrees to 45 degrees from a surface facing each other between the first mold and the second mold, respectively.

In addition, one side of the main molding space of the first mold is formed with a second molding space penetrating to the opposite side, and located on the opposite side to the surface formed with the second molding space of the first mold so that one end can be separated inside the second molding space. It is inserted, it may further include a space adjusting member for filling a portion of the second molding space in the inserted state.

And a movable plate which is bidirectionally movable in a state of symmetry with the second mold with the first mold interposed therebetween and is connected to the space adjusting member and is movable with the space adjusting member, and is connected to the movable plate to move the movable plate bidirectionally. It may further include.

In addition, the fixing unit is connected to the first mold to fix the first mold, wherein the driving unit is connected to the moving plate in a state connected to the fixing unit,

A guide bar protruding from the fixing part and penetrating the moving plate and inducing linear movement of the moving plate may further include a release bar extending from the moving plate and penetrating to the main molding space of the first mold.

One side is located on one side of the first and second molds facing the first mold, the first mold and the forming space penetrating to the opposite side and covering one side of the molding space, one end of the first mold A space adjusting member inserted into the molding space from the opposite side to be detachable from the opposite side to fill a part of the molding space;

It is also characterized in that the molding liquid is filled in the remaining space except the space filled in the molding space of the space adjusting member in the process of filling in the molding space.

In this case, the space adjusting member is inserted into the molding space, but is inserted into the molding space while being integrally connected to the end of the first insertion section and the first insertion section having a diameter smaller than the diameter of the molding space, and has the same diameter as the diameter of the molding space. It includes a second insertion section having, the molding liquid is filled in the gap between the outer surface of the first insertion section and the inner surface of the molding space can be filled to the boundary point between the second insertion section and the first insertion section.

The present invention having these various embodiments,

In the process of injection of the molding liquid into the main molding space through the injection passage, since the molding liquid first collides with the impact relief slope immediately before colliding with the main core of the second mold, the main core collides with the main core. Since the impact applied to it is alleviated, it has an advantage of minimizing the damage of the main core.

In addition, since the molding liquid collides with the impact absorbing surface of the second mold and then collides with the main core after being impacted on the inclined surface for cushioning, the impact applied to the main core may be further alleviated.

And since the end of the impact relief inclined surface is spaced apart from the edge of the main molding space, the cross-sectional reduction section is formed at the point between the end of the impact relief inclined surface and the border of the main molding space, the molded article demoulded from the main molding space Since the thickness of the boundary point between the injection molding parts demolded from the injection molding and the injection molding liquid is reduced, the injection molding part can be easily removed from the molded article through the reduced thickness.

In addition, since the space volume of the molding space can be adjusted through the space adjusting member, there is also an advantage that the molded article of various lengths or sizes can be formed by replacing the space adjusting member while using one mold.

In addition, since the position is fixed by the moving plate and the fixing part in the state in which the space adjusting member is inserted into the mold, unnecessary movement of the space adjusting member is prevented in the molding process.

In addition, the molded article can be easily demolded from the mold as the demolding bar pushes the molded article in the process of moving with the moving plate.

And even if the molded part is broken in the demolding process, even if a part remains in the molding space, the part can be easily pushed out to the outside through the space adjusting member, so that unnecessary disassembly of the mold can be omitted.

1 is an overall front view of a first mold

Figure 2 is an overall exploded view from the side

Figure 3 is an overall coupling view seen from the side

Figure 4 is an overall coupling showing the injection process of the molding liquid

5 is an enlarged view of "A"

Figure 6 is an enlarged view of "B"

Figure 7 is an enlarged view of adjusting the insertion length of the space adjusting member

Figure 8 is an overall coupling of the molding is complete

Figure 9 is an overall coupling showing the demolding process

10 and 14 illustrate another embodiment of the present invention.

Hereinafter, the detailed configuration and effects thereof will be described based on the embodiments shown in the drawings.

The mold according to the present invention includes a first mold 100 and a second mold 200 as shown in FIGS. 1 to 6.

First, the first mold 100 is a block in which the actual molding of the molded article is made, and has a structure in which a main molding space 110 is recessed in one side thereof in accordance with the outer shape of the molded article.

In addition, a second molding space 120 having a shape in communication with the main molding space 110 is formed around the main molding space 110 among the first molds 100, in which the second molding space 120 is formed. Silver is formed to penetrate to the opposite side of the first mold (100).

In addition, one side of the main molding space 110 and the second molding space 120 is formed with an air vent hole 900 for minimizing the occurrence of molding failure by discharging the air in each molding space in the molding process after the injection molding process .

Therefore, in the process of injecting the molding liquid into each molding space under high pressure, the air formed in each molding space by the injection pressure of the molding liquid is discharged through the air bleed hole 900 together with some molding liquid. Molding defect is minimized.

And some of the molding liquid discharged through the air vent hole 900 is molded and demoulded together in a form protruding from the edge of the molded product after molding is completed, and is removed through a separate process.

The second mold 200 plays a role of forming the internal shape of the molded product together with the first mold 100. The second mold 200 is located in a block form and faces a surface in which the main molding space 110 is formed. .

At this point, the main core 210 for forming the internal structure of the molded product 1 protrudes toward the main molding space 110 at a point facing the main molding space 110 among the second molds 200, and the molding process thereafter. In the main core 210 is coupled in the inserted state in the main molding space 110, a molding gap for injection of the molding liquid between the outer surface of the main core 210 and the inner surface of the main molding space (110) ( T3) is formed and an injection gap T2 for injection of the molding liquid is formed between the edge of the main molding space 110 and the outer surface of the main core 210.

In the basic structure, the molding liquid injection path 130 serving as a moving path of the molding liquid when the molding liquid is injected into the main molding space 110 is formed around the main molding space 110 of the first mold 100. It is formed in a rail structure, one end of the molding liquid injection passage 130 is in communication with the outside of the first mold 100 and the other end has a structure in communication with the main molding space (110).

In this state, when the first mold 100 and the second mold 200 are coupled, one side of the second mold 200 covers one side of the molding liquid injection passage 130 as shown in FIG. .

At the end of the inner surface of the injection liquid injection passage 130, which is connected to the main molding space 110, the first collision immediately before injection of the injection liquid into the main molding space 110 through the injection liquid injection passage 130 is performed. Impact-reducing inclined surface 132 for inducing is formed.

The impact relief inclined surface 132 is formed on the surface facing the second mold 200 among the inner surface of the molding liquid injection passage 130, and is formed at the end point near the edge of the main molding space 110, among others. .

The impact relief inclined surface 132 is formed to protrude while making an inclination toward the second mold 200 toward the edge of the main molding space 110.

Accordingly, the molding liquid moves in a linear direction along the initial molding liquid injection path 130 and then strikes the impact relief inclined surface 132, and then the direction of the molding liquid is changed toward the second mold along the inclination direction of the impact relaxing inclined surface 132.

And the end of the impact relief slope 132 toward the main molding space 110 (hereinafter referred to as 'end end') is not directly connected to the border of the main molding space 110, but is connected at intervals around the border peripheral do.

The impact relief inclined surface 132 thus formed forms an inclination angle of 25 to 45 degrees based on a plane point facing the second mold of the first mold 100.

The reason for limiting the angle of the impact relief slope 132 in this way,

When the inclination angle is less than 25 degrees, the collision phenomenon between the molding liquid and the impact relief inclined surface 132 is insufficient, and eventually the impact relaxation effect is lowered when the molding liquid and the main core 210 run out.

On the contrary, when the inclination angle exceeds 45 degrees, the molding liquid does not smoothly pass through the impact relief inclined surface 132, and thus is a barrier to injection into the main molding space 110.

Of course, the inclination angle of the impact-reducing inclined surface is not limited to this, and may be variously modified according to the type of the molded article or the injection pressure of the molding liquid.

As described above, in the state in which the impact relief inclined surface 132 is formed in the first mold 100, the secondary impact relaxation groove 220 is formed in the second mold 200.

The auxiliary impact mitigating groove 220 induces a secondary collision just before the injection of the molding liquid into the main molding space 110 after the first collision with the impact relief inclined surface 132 and at the same time the molding liquid is the main molding space 110. ) To induce smooth inflow.

The auxiliary impact mitigating groove 220 is formed in a groove shape at the point facing the impact mitigating slope 132 of the second mold (200), but again the direction change slope 222 and the shock absorbing surface 224 for each section It is divided into two.

Among them, the direction change slope 222 serves to guide the molding liquid that has been changed to collide with the impact relief slope 132 so as to smoothly move into the auxiliary impact relief groove 220. The inclined surface 222 has a structure that is inclined substantially parallel to the form.

Accordingly, the molding liquid impinges on the impact-reducing inclined surface 132 and flows smoothly into the auxiliary impact-relieving groove 220 along the direction changing inclined surface 222.

In addition, the shock absorbing surface 224 induces a substantial secondary collision just before the injection of the molding liquid introduced into the auxiliary impact mitigating groove 220 into the main molding space 110, and at the same time, the main core 210 and the main molding space. It serves to guide the injection smoothly into the injection gap (T2) between (110).

The shock absorbing surface 224 is formed to extend from the end of the direction change inclined surface 222 toward the edge of the main molding space 110, the direction toward the main molding space 110 from the direction changing slope 222 It is in the form of a bent slope.

In this case, as shown in FIG. 5, the end of the shock absorbing surface 224 is positioned in a form displaced from the end of the shock absorbing inclined surface 132, and thus, the end of the shock absorbing surface 224 and the shock absorbing inclined surface 132. Discharge gaps T1 for discharging the molding liquid are formed between the end portions.

The discharge gap T1 thus formed is in communication with the injection gap T2 formed between the main core 210 and the edge of the main molding space 110.

At this time, the width of the discharge gap (T1) is formed to be smaller than the depth of the molding liquid injection passage 130, the molded article molded in the main molding space 110 after molding and the injection furnace molded in the molding liquid injection passage 130 The thickness of the connection point between the molding unit 20 is formed relatively thin, which facilitates the separation of the molding liquid injection path 130.

The molding liquid first impinged on the impact mitigating slope 132 by this structure is introduced into the auxiliary impact mitigating groove 220 and then secondly impinged on the impact absorbing surface 224 and then formed through the injection gap T2. It flows into the gap T3.

The first mold 100 described above may be provided with a space adjusting member 300.

The space adjusting member 300 adjusts the volume in the second molding space 120 in the process of forming in the second molding space 120 connected to the main molding space 110, thereby forming the second molding space 120. It controls the length or size of the molded article.

The space adjusting member 300 is a bar shape as a whole and one end is inserted into the second molding space 120 in a state in which the main molding space 110 is located opposite to the surface on which the main molding space 110 is formed.

Accordingly, the second molding space 120 is partially filled by the space adjusting member 300, and in this state, the space adjusting member 300 can move in both directions and the space adjusting member 300 moves outward. In this case, the volume of the molding fluid filled in the second molding space 120 increases.

On the contrary, when the space adjusting member 300 moves toward the second mold 200, the second molding space 120 reduces the space volume in which the molding liquid is filled.

The structure of the space adjusting member 300 may be variously modified according to the structure of the molded article formed through the second molding space 120.

For example, when the molded article formed through the second molding space 120 is a hollow tube structure, the end of the second molding space 120 is inserted into the first insertion section of the space control member 300 as shown in FIG. It may be divided into 310 and the second insertion section 320.

At this time, the first insertion section 310 is formed over a predetermined period from the most end of the space control member 300, but is a bar shape having a straighter than the diameter of the second molding space 120,

The second insertion section 320 is formed in a shape extending from the first insertion section 310 toward the outside of the space control member 300, but manufactured in the shape of a bar having the same diameter as the diameter of the second molding space 120 do.

Accordingly, when the first insertion section 310 and the second insertion section 320 are inserted into the second molding space 120 at the same time, as shown in FIGS. 3 and 6, the molding liquid is formed in the first insertion section 310. Since only the gap between the circumferential surface and the inner surface of the second molding space 120 is filled, it becomes possible to form a hollow tube.

In addition, since the molding liquid is filled and molded only in the section except the section in which the second insertion section 320 is inserted, the second molding space in which the molding liquid may be filled according to the insertion length of the second insertion section 320 ( The space volume of 120 is controlled.

That is, in the state where the second insertion section 320 is deeply inserted, since the molding liquid filling space is reduced by that amount, the hollow tube having a short length is formed.

On the contrary, when the insertion length of the second insertion section 320 is short, as shown in FIG. 7, the filling space of the molding liquid is increased by that amount, and thus a long hollow tube is formed.

For reference, the structure in which the first insertion section 310 and the second insertion section 320 are formed in the space adjusting member 300 is merely an example of forming a molded product in the form of a hollow tube, regardless of the structure of the space adjusting member. If the length of the molded article can be controlled and molded according to the insertion length of the space adjusting member 300, the structure of the space adjusting member can be variously modified.

In addition, in the drawings and the above description, the space adjusting member 300 has been described and illustrated as being applied to a mold in which the main molding space 110 and the second molding space 120 are formed together, but the present invention is not limited thereto. Regardless of the number, if the space adjusting member is inserted into a specific molding space, the space volume of the molding space can be adjusted.

For reference, the 'molding space' described when the space adjusting member 300 is applied in the claims below includes all embodiments in which the main molding space and the second molding space are simultaneously formed or only one molding space is formed.

The first mold 100 to which the space adjusting member 300 is connected may further include a moving plate 500, a release guide bar 600, a fixing part 400, and a driving part 800.

Among them, the fixing part 400 fixes the position of the first mold and at the same time serves as a connection function with the moving plate 500 to be described later. The first mold 100 and the space adjusting member 300 are interposed therebetween. Located in a state facing the one side is connected to be separated from the first mold to prevent unnecessary shaking of the first mold (100).

The structure or shape of the fixing part 400 may be variously modified.

The guide bar 700 protrudes from the surface of the fixing part 400 facing the first mold 100 and is connected to the first mold 100.

The guide bar 700 induces a precise linear movement of the moving plate 500, which will be described later, and is formed in a straight bar shape having a predetermined length and positioned at both ends of the guide bar 700 and positioned between the fixed part 400 and the first mold 100. Respectively, it is connected to the fixing part 400 and the first mold 100.

The moving plate 500 guides the installation and operation of the demolding induction bar 600 which will be described later and prevents unnecessary shaking of the space adjusting member 300, and has a predetermined thickness and has a fixed shape ( Both sides are positioned to face the first mold 100 and the fixing part 400 in a state located between 400 and the first mold 100.

At this time, as the moving plate 500 is installed in a state penetrated by the guide bar 700, bidirectional linear movement is possible along the longitudinal direction of the guide bar 700.

To this end, as the driving unit 800 such as a cylinder is installed at the fixing unit 400 and connected to the moving plate 500, the moving plate 500 may be moved back and forth by the operation of the driving unit.

And the space adjusting member 300 is installed in a state that penetrates the moving plate 500 so as not to move together when moving back and forth of the moving plate 500. Therefore, the space adjusting member 300 is prevented from unnecessary shake in the state of being inserted into the second molding space (120).

In this state, the movable plate 500 is provided with a separate demolding induction bar 600.

The demolding induction bar 600 serves to demold the molded article 1 located in the first mold 100 after the completion of molding from the first mold 100, and has a bar shape having a predetermined length as a whole and provided in a plurality of states. Of the moving plate 500 is protruded from the surface facing the first mold 100 is positioned in the one end is inserted into the first mold.

Therefore, the demolding induction bar 600 is moved together in a bidirectional linear movement of the moving plate 500 as shown in FIG. 9, and moves together in the process of moving the moving plate 500 toward the first mold 100 in the demolding process. After the additional mold 100 passes through the first mold 100, the molded article 1 is demolded from the first mold 100 as the molded article 1 located in the first mold is pushed out.

At this time, as the demolding bar 600 is disposed at intervals in a state where a plurality of demolding bars 600 are provided, each demolding bar 600 is pushed while simultaneously contacting the entire area of the molded article 1 so that the molded article does not tilt to one side and is accurately As it is pushed in a straight direction, it is possible to smoothly demould.

For reference, in the present invention, the space adjusting member 300, the moving plate 500, the guide bar 700, the release guide bar 600, the driving unit 800 and the fixing unit 400 may be omitted as necessary.

That is, since the core of the present invention is to minimize the impact applied to the main core 210 by inducing a collision with the inclined surface 132 for the impact relaxation in the process of the injection molding liquid into the mold, the space control member 300 This is because the matter can be implemented even if omitted.

Hereinafter will be described the operation of the present invention by this configuration and the unique effects generated in the process.

First, as shown in FIG. 2, in a state in which the first mold 100 and the second mold 200 are in close contact with each other, the main mold 210 of the second mold 200 is formed in the main molding space of the first mold 100. 110) It is inserted into the state.

In this state, an end of the space adjusting member 300 is inserted into a part of the second molding space 120.

In this state, when the molding liquid is injected to be filled into the molding liquid injection path 130, and then a high-pressure air or the like is supplied into the molding liquid injection path, the molding liquid passes through the molding liquid injection path 130 at a high pressure, and then It is moved toward the molding space (110).

In this process, the molding liquid is first impinged on the impact mitigating slope 132 and then inserted into the auxiliary impact mitigating groove 220 of the second mold 200, and then absorbing the impact of the auxiliary impact mitigating groove 220. After the second collision with the surface 224 passes through the injection gap (T2) between the main core 210 and the main molding space 110 through the discharge gap (T1) is injected into the molding gap (T3).

In the process of injection of the molding liquid into the injection gap (T2) is impregnated in the molding gap (T3) after the impact on the surface of the main core 210, but as described above on the shock-absorbing inclined surface 132 and the shock absorbing surface 224 Since the first collision after the collision to the main core 210, the impact on the main core 210 is alleviated.

Therefore, even when the collision between the molding liquid and the main core 210 is repeated for a long time during the injection of the molding liquid, the damage of the main core 210 due to the impact is delayed, and thus the life of the mold is extended.

In addition, the molding liquid is filled in the second molding space 120 together with the main molding space 110. At this time, an end portion of the space adjusting member 300 is inserted into the second molding space 120. Since a part of the molding space 120 is filled by the space adjusting member 300, the molding liquid is filled into only the remaining space except the space filled by the space adjusting member 300 of the second molding space 120. .

If the length of the molded article to be molded in the second molding space 120 is to be lengthened, when the insertion length of the space adjusting member is reduced by replacing the space adjusting member 300, the filling space of the molding liquid is increased by the amount, eventually. It is possible to produce molded articles of relatively long lengths.

On the contrary, when the length of the molded article to be molded in the second molding space 120 is shortened, when the insertion length of the space adjusting member is increased by replacing the space adjusting member 300, the filling space of the molding liquid is reduced by that amount. It is possible to produce molded articles of relatively short lengths.

After the filling process of the molding liquid is completed and cooled, the second mold 200 is moved as shown in FIGS. 8 and 9, and then the moving plate 500 is moved to the first mold just before the demolding process. When moved toward (100), the demolding induction bar 600 moves together and pushes the molded article 1 located in the first mold 100 in the opposite direction, thereby smoothly demolding the molded article from the first mold.

If the space of the second molding space 120 is long, the length of the molded product molded in the second molding space 120 is also long, and in the process of demolding such a long molded product, the molded product is likely to break. As a result, a part of the molded article may remain in the second molding space 120.

In this case, when the space adjusting member 300 having a relatively long insertion length is inserted into the second molding space 120, a part of the molded product remaining in the second molding space 120 during the insertion process may be smoothly discharged to the outside.

Therefore, unlike the conventional method, it is not necessary to go through the process of disassembling the entire mold in order to remove a part of the molded part to the outside.

When the demolding is completed, the injection molding unit 20 is integrally demolded into the injection furnace molded in the molding solution injection path 130 on one side of the molded product 10 molded in the main molding space 110 as shown in FIG. 9. .

The injection molding unit 20 has to be separated from the molded article 1 through a separate process. At this time, as described above, the molding liquid is discharged between the impact relief slope 132 and the shock absorbing surface 224 in the molding process. Since the width of the gap T1 is formed smaller than the depth of the molding liquid injection passage,

As a result, the thickness of the connection point T4 between the molded part 20 and the molded product 1 by injection corresponding to the discharge gap T1 is also formed relatively thin as shown in FIG. 9.

Therefore, when the injection molding unit 20 is separated based on a point corresponding to the discharge gap, the molding unit 20 can be easily removed as compared to the conventional method, and the possibility of damage to the molded product 1 is minimized in the removing process.

10 and 14 illustrate another embodiment of the present invention.

One side of the first mold 100, the air vent hole 900 is formed.

The air bleed hole 900 serves as an outlet through which air remaining in each of the molding spaces 110 can escape, and when combined with the first mold 100 and the second mold 200 in the horizontal direction (x direction) Is formed.

Since the air bleed hole 900 is a hole for discharging air, it is preferable to have a relatively smaller size than the molding liquid injection path 130 for supplying the casting material.

The second mold 200 has a groove formed in a lateral direction thereof to form an air bleed hole 900 together with the first mold 100.

In addition, a vertical air draining hole 910 having a predetermined length in the vertical direction (y direction) is formed on the upper surface of the center of the second mold 200, and the vertical air draining hole 910 is also an air draining hole 900. It is a hole for discharging the air in the molding space as shown.

Hereinafter will be described the actions and effects associated with this.

The first mold 100 is disposed at the upper portion, the second mold 200 is disposed at the lower portion, and the molten molding liquid is introduced at a high pressure through the molding liquid injection passage.

The molding liquid injection path 130 is formed to be inclined in the F direction so that the casting material flows in the F direction. The F direction may be decomposed in the x direction and the y direction, where the x direction provides a force for advancing into the mold, and the y direction provides a force for falling to fill the entire molding space 110. Therefore, the molding space can be filled faster than the dropping speed of the molding liquid due to gravity, and the pressure applied in the x direction is relatively reduced compared to when the molding liquid is supplied only in the x direction, thereby preventing the inside of the mold from being damaged by the high pressure. Can be.

When the molding liquid fills the molding space 110, the air inside the molding space 110 is discharged through the air vent hole 900 and the vertical air vent hole 910. Since the vertical air draining hole 910 is formed long in the vertical direction, the air existing in the lower portion of the molded article 10 may also be smoothly discharged, thereby improving the quality of the molded article 10.

At this time, the molding liquid is discharged together due to the high pressure inside the mold, and an agglomerated portion 1 'is formed at an end of the discharged portion.

When the cooling of the molding liquid is completed, the first mold 100 is separated from the second mold 200, and then the produced molded product 10 is lifted upward to separate from the second mold 200.

As described above, when the molding liquid is inclinedly supplied to the mold having the vertical air scavenging hole 910 formed therein, since the molding liquid to be supplied has both the lateral direction (x direction) and the longitudinal direction (y direction) force, In the case of forming the drain hole in the horizontal direction and the vertical direction, there is an effect that the efficiency of the air drain is further increased.

Hereinafter, another embodiment of the present invention will be described.

12 and 14, except that the guide groove 290 is formed in the second mold 200 and the moving mold 1 is included in the second mold 200. Since the structure and function are the same, overlapping description will be omitted.

First, the guide groove 290 is formed in the longitudinal direction on the inner surface of the second mold body 201 constituting the second mold 200. The guide groove 290 is to be formed in the longitudinal direction on the inner surface of the second mold body 201.

In addition, stoppers 256 and 256 'having protrusions are formed at the upper end and the lower end of the guide groove 290 to prevent the moving mold 1 to be described later from being separated from the second mold 200.

However, the stopper 256 'positioned at the lower end may be omitted in case of replacing the moving mold 1.

The moving mold 1 is connected to the guide groove 290.

The moving mold 1 has a cylindrical shape as a whole, and fastening portions 3 protruding outward are formed on both sides of the moving mold body 2.

The fastening part 3 is coupled to the guide groove 290 so as to be movable up and down inside the second mold 200, but is not separated from the second mold 200 by the stopper 256.256 '. .

The slit groove 4 may be formed in the movable mold 1.

The slit groove 4 is a groove formed in the upper surface of the moving mold 1, and is formed to have a predetermined length in the vertical direction, and the slit groove 4 is the air existing in the second mold 200 is discharged to the outside It is a way out.

The movable mold 1 has a circular cross section as a whole, but may be manufactured in various shapes such as a square shape, and may be applied to change the width as well as the length.

Various features of the present invention described above may be variously modified or combined by those skilled in the art, but the present application is only mentioned with respect to some embodiments of the present invention, such modifications and combinations are described in the claims If included in the technical spirit of the present invention should be determined to fall within the scope of the present invention.

Claims

A main molding space is formed at one side and a molding liquid injection path having a predetermined depth in communication with the outside is formed at one side of the main molding space, and an end portion of the molding liquid injection path is in communication with the main molding space. Mold and

A second mold facing the first mold and having one side protruding from the main core inserted into the main molding space;

In the mold in which a molding liquid is injected into the gap between the main molding space and the main core through the molding liquid injection path,

An impact relief slope is formed at one end portion of the molding liquid injection passage communicating with the main molding space.

Immediately before the molding liquid is injected into the main molding space, the molding liquid is injected into the main molding space after colliding with the impact relaxation slope.

mold.
In claim 1,

The impact relief inclined surface is formed to be inclined toward the second mold toward the connection point with the main molding space from the surface facing the second mold in the molding liquid injection passage.

mold.
In claim 2,

An auxiliary impact mitigating groove is formed at a point facing the impact mitigating inclined surface of the second mold, and an end of the impact mitigating inclined surface and an end of the auxiliary impact mitigating groove are displaced, After the molding liquid that has passed through the inclined surface collides with the auxiliary impact mitigating groove, it is injected into the gap between the main molding space and the main core through the gap between the impact mitigating slope and the auxiliary impact mitigating groove.

mold.
In claim 3,

The auxiliary shock mitigation groove,

An inclined surface for changing the direction of the inclined form in the same direction as the impact relaxing inclined surface

An impact absorbing surface extending from the inclined surface for changing direction and being bent toward the first mold, the shock absorbing surface being formed so as to deviate from an end portion of the impact relaxing inclined surface

Containing

mold.
In claim 4,

Between the end of the impact absorbing surface and the end of the impact relief slope is formed a discharge gap of the molding liquid,

The width of the discharge gap is formed smaller than the depth of the injection molding liquid

mold.
In claim 4,

The inclined plane for changing direction and the inclined plane for impact alleviating form an angle of 25 degrees to 45 degrees from a surface facing each other between the first mold and the second mold, respectively.

mold.
In claim 1,

One side of the main molding space of the first mold is formed with a second molding space penetrating to the opposite side,

The space adjusting member which is located on the opposite side to the surface of the second molding space of the first mold is inserted so as to be detachable in the second molding space, and fills a part of the second molding space in the inserted state.

Mold containing more.
In claim 7,

A movable plate movable in both directions in a state of being located at a symmetrical point with the second mold with the first mold interposed therebetween and connected with the space adjusting member to move together with the space adjusting member

A driving unit connected to the moving plate to move the moving plate in both directions

Containing more

mold.
In claim 8,

A fixing part connected to the first mold to fix the first mold,

The driving part is connected to the moving plate in a state of being connected to the fixed part,

A guide bar protruding from the fixing part and penetrating the moving plate and inducing linear movement of the moving plate;

Demolding induction bar protruding from the moving plate and penetrating to the main molding space of the first mold

Containing more

mold.
The first mold has a molding space penetrated to the opposite side on one side,

A second mold facing the first mold and covering one side of the molding space;

A space adjusting member positioned at one side of the first mold and having one end thereof detachably inserted into the molding space from an opposite surface of the first mold to fill a part of the molding space;

Including,

In the process of filling the molding liquid in the molding space is filled in the remaining space except the space filled in the molding space of the space control member

mold.
In claim 10,

The space adjusting member is inserted into the molding space, the first insertion section having a diameter smaller than the diameter of the molding space and

A second insertion section inserted into the molding space while being integrally connected to an end of the first insertion section, and having a diameter equal to the diameter of the molding space;

The molding liquid is filled in the gap between the outer surface of the first insertion section and the inner surface of the molding space, but is filled to the boundary point between the second insertion section and the first insertion section.

mold.