JP3481614B1 - Mold for molding semi-solid metal - Google Patents

Abstract

To provide a molding die for preventing a solidified layer generated in an injection sleeve of semi-molten metal from being mixed into a product by using a simple structure without using a complicated mechanism. SOLUTION: A cavity formed between a movable mold and a fixed mold, an injection sleeve for injecting semi-molten metal into the cavity, and a horizontal opening and closing provided between the cavity and the injection sleeve. A pair of slide cores, an opening through which a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve flows toward the cavity at an abutting portion of the slide core, and a slide core at a lower position separated from the opening. And a bottomed solidified material trap groove engraved in the same direction as the opening / closing direction of the slab.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for forming a semi-molten metal, and more particularly to a mold for forming a semi-molten metal in which a solidified material is trapped in the middle of a runner so as not to infiltrate. Is.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Patent No. 3246363, an aluminum alloy melt having a superheat degree of less than 50 ° C. with respect to a liquidus temperature added with a refining agent is used without using a cooling jig. By pouring the molten metal directly into a holding container and holding it for 30 seconds to 30 minutes while cooling it to a forming temperature at which the liquid phase ratio of the alloy is less than 75%, a large number of fine spherical primary crystals are generated, thereby simplifying the operation. It is known that a semi-molten metal having fine primary crystals can be easily obtained and pressure-molded.

[0003]

However, since the latent heat amount of the semi-molten metal is small, when the semi-molten metal is supplied into the injection sleeve, the surface layer portion of the semi-molten metal contacting the inner wall surface of the injection sleeve is It is cooled rapidly and it is easy to form a so-called solidified layer. When such a solidified layer is mixed in the product, it cannot be completely fused with the surrounding healthy semi-molten metal portion, and the same defect as that of the molten metal is caused.

In order to trap such a solidified substance,
Before the semi-molten metal is loaded into the cavity, an oxide film trap member having a diameter smaller than the inner diameter of the detachable injection sleeve is attached to the injection end surface of the injection sleeve to capture the solidified product ( See, for example, Patent Document 1).

[0005]

[Patent Document 1] Japanese Unexamined Patent Publication No. 2000-15429 (Page 3, Column 3, Line 17-Page 3, Column 4, Line 34)

However, the oxide film trap member described in Japanese Patent Laid-Open No. 2000-15429 is used together with the biscuit part when the mold is taken out by opening both molds after injecting the semi-molten metal. Since it is taken out, when trying to obtain a molded body using a semi-molten metal, the oxide film trap member must be set for each shot,
It was an obstacle to industrial continuous operation.

The present invention pays attention to the above-mentioned problems of the solidified layer generation, and the mixing of the solidified layer generated in the injection sleeve of the semi-molten metal into the product by a simple structure without using a complicated mechanism. It is an object of the present invention to provide a mold for molding a semi-molten metal that prevents the metal melt.

[0008]

In order to solve such a problem, in a first invention according to the present invention, a cavity portion formed by a movable mold and a fixed mold, and a semi-molten metal are provided in the cavity. Sleeve for injection-loading into the section, a pair of slide cores provided between the cavity section and the injection sleeve and opened and closed horizontally, and a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve at the abutting portion of the slide cores. Is formed of an opening portion that flows toward the cavity portion, and a bottomed solidified material trap groove that is formed in a lower position apart from the opening portion in the same direction as the opening and closing direction of the slide core.

In the second invention based on the first invention, the opening is provided so as to substantially coincide with the center of the injection sleeve. In the third invention, a cavity portion formed between the movable die and the fixed die, an injection sleeve for injecting and loading semi-molten metal into the cavity portion, and a cavity portion provided between the cavity portion and the injection sleeve are provided. On the slide core, a pair of slide cores that open and close horizontally and an opening for allowing the semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve to flow toward the cavity at the abutting portion of the slide core. A bottomed coagulum trap groove formed in the same direction as the opening and closing direction of the slide core at an upper position and a lower position separated from the opening, and a stepped engraved step at the tip of the injection sleeve. A diameter portion was provided to form a ring-shaped groove between the slide core and the enlarged diameter portion.

In the fourth invention, a cavity formed between the movable mold and the fixed mold, an injection sleeve for injecting and loading semi-molten metal into the cavity, and a cavity provided between the cavity and the injection sleeve A pair of slide cores that are horizontally opened and closed, an opening for allowing a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve to flow toward the cavity at an abutting portion of the slide core, and an end of the movable mold. A protrusion extending in the injection sleeve direction through the opening at a position spaced from the inner wall surface of the slide core.

In a fifth aspect of the invention, which is mainly based on the fourth aspect, a small opening that opens at the contact / separation end portion of the slide core is provided.
Diameter upper circular groove and lower circle with a larger diameter than the upper circular groove
It is composed of arcuate grooves .

In the sixth invention, a cavity part formed between the movable mold and the fixed mold, an injection sleeve for injecting and loading semi-molten metal into the cavity part, and a cavity part provided between the cavity part and the injection sleeve. A pair of slide cores that are horizontally opened and closed, an opening for allowing a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve to flow toward the cavity at an abutting portion of the slide core, and separated from the opening. A truncated arc opening having an inner wall surface flush with the injection sleeve at a lower position, and a space for trapping and storing the solidified material generated in the surface layer of the semi-solidified metal at the end of the movable mold, A solidified material trap groove that connects the space portion and the arcuate arc opening portion was inserted.

In the seventh invention mainly based on the sixth invention, an air vent hole is provided which is inserted from the space portion toward both end portions of the movable mold. In the eighth invention, a cavity formed between the movable mold and the fixed mold, an injection sleeve for injecting and loading semi-molten metal into the cavity,
A pair of slide cores provided between the cavity portion and the injection sleeve to open and close horizontally, and a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve to the abutting portion of the slide cores flows toward the cavity portion. An opening, an arcuate opening having an inner wall surface flush with the injection sleeve at a position spaced apart from the opening, and a solidified product generated in the surface layer of the semi-molten metal at the end of the movable mold. A space portion for trapping and storing; a solidified material trap groove connecting the space portion and the arcuate arc opening portion; and a diameter-enlarged portion engraved in a step shape at the tip of the injection sleeve. A ring-shaped groove was formed between the slide core and the expanded diameter portion.

Further, in the ninth invention mainly based on the first or third invention, the solidified material trap groove has a square shape or a rectangular shape when viewed from the front.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The semi-molten metal of the present invention will be described below.
The molding die will be described in detail with reference to FIGS.
It FIG. 1 shows a slurry having a solidified material trap groove according to the present invention.
Horizontal mold clamping with id core
Front view, FIG. 2 is a front view seen from AA of FIG. 1, and FIG.
A slide core having a solidified material trap groove and a phosphorus
Fig. 4 is a vertical cross-sectional view of a mold structure with a groove.
Form a solidified material trap groove that extends from the surface to the fixed mold side
5 is a vertical cross-sectional view of a mold structure having a protruding portion that
The front view seen from BB, FIG. 6 is the solidified matter tiger which concerns on this invention.
Slide core with a slot and the trap groove as desired
Vertical section of the mold structure with the space provided in the movable mold
Front view, FIG. 7 is a front view seen from CC of FIG. 6, and FIG. 8 is movable.
Install on the slide core as desired in the space provided in the mold.
Mold with scraped solidified material trap groove and ring groove
It is a longitudinal cross-sectional view of the structure.

Hereinafter, Embodiments 1 to 5 of the present invention will be described in detail with reference to FIGS.

[0017]

[Embodiment 1] Embodiment 1 will be described with reference to FIGS.
1 and 2 show a mold for forming a semi-molten metal.
Is a fixed mold fixed to the fixed platen 6, 8 is a movable mold fixed to the movable platen 10, and 14 (a, b) are a pair of slide cores which open and close left and right at the ends of the fixed mold 4. 20 is an injection device, 22 is an injection sleeve, 24 is a plunger tip, 26 is a plunger rod, and 28 is a supply port for semi-molten metal.

The movable mold 8 is moved forward and backward with respect to the fixed mold 4 by the operation of a cylinder device (not shown). In response to this, the movable mold 8 is moved to the fixed mold 4. On the other hand, the mold is closed by a predetermined mold clamping force (FIG. 1) and the mold is opened apart from the fixed mold 4. With the fixed mold 4 and the movable mold 8 closed, a cavity 30 is formed between the molds 4 and 8.

The fixed mold 4 is provided with an injection device 20 for injecting the semi-molten metal M into the cavity 30 at high pressure. As shown in FIG. 1, this injection device 20 is provided with a step-like engraved portion on the back surface of the fixed mold 4 (opposite to the movable mold 8), and a convex portion larger than the outer diameter of the injection sleeve 22 is provided here. The injection sleeve 22 is fixed in a state in which the shaped locking portion 29 is locked.

Further, it comprises a plunger tip 24 slidably fitted in the injection sleeve 22 and an injection cylinder (not shown) connected to a plunger rod 26 extending from the plunger tip 24.

The injection device 20 advances the plunger tip 24 from the retracted position by the operation of the injection cylinder, so that the semi-molten metal M supplied from the supply port 28 for the semi-molten metal M into the injection sleeve 22 is in the cavity portion. High-pressure injection is made in 30.

On the other hand, as shown in FIG. 2, the slide core 14 (a, a) is provided at both end portions 36 (a, b) of the fixed mold 4.
Slide core opening / closing cylinder 38 for opening / closing b)
(A, b) are attached. The slide core opening / closing cylinder 38 (a, b) includes a cylinder rod 4 that can move forward and backward.
0 (a, b) is provided, and the cylinder rod 40 (a,
A pair of slide cores 14 (a, b) is provided at the front end of (b) so that the slide cores 14 (a, b) can come into contact with and separate from the left and right in front of the injection sleeve 22.

This pair of slide cores 14 (a, b)
Is provided with a step portion 45 by engraving the fixed die 4 on the injection sleeve 22 side in a stepped shape, and the step portion 45 is sandwiched between the fixed die 4 and the tip end portion of the injection sleeve 22.
It is arranged so that it can move back and forth smoothly and smoothly.

As shown in FIG. 2, the slide core 14
By opening and closing (a, b), each semicircular opening 43 is formed in the approximate center of the contact / separation end 34 of the slide core 14 (a, b).
When (a, b) is provided and the slide core 14 (a, b) is closed, a circular opening 43 is formed.

As shown in FIG. 1, the slide core 14 (a,
Regarding the thickness of b), the thickness (t1) of the upper half of the slide core 14 (a, b) is thinner than the thickness (t2) of the lower half (t1).
<T2), and both thicknesses are different. Thus, the thickness (t) of the upper half of the slide core 14 (a, b) is
The purpose of thinning 1) is to secure a passage for smoothly loading the semi-molten metal M supplied to the injection sleeve 22 into the cavity portion 30 via the runner portion 32 by the forward movement of the plunger tip 24. Further, the purpose of increasing the thickness (t2) of the lower half is to make the semicircular opening 4
Slide core 14 (a, b) separated from 3 (a, b)
This is because the solidified material trap groove 44 having a substantially rectangular bottomed portion is provided at the upper lower position.

Reference numeral 46 denotes an air vent groove for discharging the air staying in the cavity portion 30 when the semi-molten metal M is loaded in the cavity portion 30, and 48 denotes an overflow portion.

When the semi-molten metal M is formed by using both the molds 4 and 8 having the slide core 14 described above, first,
Pressure oil is supplied to the slide core opening / closing cylinders 38 (a, b) to close the slide cores 14 (a, b). Next, the movable mold 8 is moved forward with respect to the fixed mold 4 by the operation of a cylinder device (not shown), and the movable mold 8 is moved to the fixed mold 4.
Then, the semi-molten metal M preheated in the injection sleeve 22 from the supply port 28 is charged into the cavity 30 and a high pressure is applied to form a product to obtain a molded body.

That is, as the semi-molten metal M, an aluminum alloy melt having a degree of superheat with respect to the liquidus temperature of less than 50 ° C. and containing a refiner is poured directly into a holding container without using a cooling jig. The alloy is kept for 30 seconds to 30 minutes while being cooled to a forming temperature showing a liquid phase ratio of less than 75% of the alloy to generate a large number of fine spherical primary crystals.

The semi-molten metal M having a truncated cone shape is supplied from the holding container with a small diameter toward the runner portion 32 side (a large diameter is the plunger tip 24 side) and has a circular cross section as shown in FIG. It is in a sideways state so as to come into contact with the inner wall surface of the injection sleep 22 that has been moved. With respect to the temperature of the semi-molten metal M supplied to the injection sleep 22, the temperature of the semi-molten metal M in contact with the inner wall surface of the injection sleep 22 having a low temperature is rapidly cooled and the temperature is lowered, and the solidified layer is formed on the surface of the semi-molten metal M. Is generated.

Next, when the plunger tip 24 is advanced, the flow resistance is generated when the semi-molten metal M passes through the opening 43 of the slide core 14 having a diameter smaller than the inner diameter of the injection sleep 22. Therefore, the semi-molten metal M located near the center of the semi-molten metal M smoothly circulates through the opening 43, but the semi-molten metal M located near the outer peripheral portion apart from the center owing to the flow resistance. It cannot be distributed and becomes stagnant.

Therefore, the solidified layer formed on the surface of the semi-molten metal M is the injection sleeve 22 and the slide core 14 (a,
The solid space is trapped in the dead space because the dead space is in contact with b). Further, in the solidified material trap groove 44 provided on the injection sleeve 22 side of the slide core 14, more solidified layers once trapped in the dead space are prevented from merging with the mainstream portion of the semi-molten metal M again, so that more solidified layers are formed. The solidified layer can be reliably captured. In this way, the opening 43 of the slide core 14
The semi-molten metal M that does not include the solidified layer that has passed through is passed through the runner portion 32 and is loaded into the cavity portion 30.

When the semi-molten metal M is loaded into the cavity 30, the tip of the semi-molten metal M initially loaded (the upper end of the cavity 30 in FIG. 1) stays inside the cavity 30. The residual air is discharged to the outside through the air vent groove 46. Subsequently, a part of the semi-molten metal M filled in the cavity portion 30 under a high pressure by the forward movement of the plunger tip 24 may be an oxide accompanied by the semi-molten metal M, a runner portion 32, a solidified layer generated in the cavity portion 30, or the like. The impurities reach the overflow section 48 and are trapped there.

After that, both molds 4 and 8 are cooled to rapidly solidify the semi-solidified metal M. Next, the movable die 8 is retracted and separated from the fixed die 4, and then the slide cores 14 (a, b) are opened. Subsequently, the molded body still attached to the movable mold 8 is removed from the movable mold 4. With this mold opening completed,
An extruding plate of an extruding mechanism (not shown) advances, and an extruding pin extrudes the molded body from the movable mold 8, is held by a molded body unloading device (not shown), and is carried out of the mold.

After that, an integrated device including a release agent coating device (not shown) and an air injection nozzle enters between the fixed mold 4 and the movable mold 8, and the mold release agent is applied and the air blow is sequentially performed. Then, the next casting preparation is completed.

[0035]

Second Embodiment A second embodiment will be described with reference to FIG. With regard to FIG. 3, since the overall configuration of the first embodiment has already been described with reference to FIGS. 1 and 2, only different portions will be described.

The difference from FIG. 1 and FIG. 2 is that
In FIG. 3, a ring-shaped groove 50 is newly provided at the tip of the injection sleeve 22, and a solidified material trap groove 52 is provided on the upper and lower sides of the slide core 14 (a, b) on the injection sleep 22 side.
(A, b) are provided.

First, the ring-shaped groove 50 will be described.
The ring-shaped groove 50 has a step-shaped circular enlarged diameter portion that is larger than the inner diameter of the injection sleeve 22 having a circular shape at the tip of the injection sleeve 22. On the other hand, the slide core 14 (a,
It forms a ring-shaped groove with b).

The space volume of the ring-shaped groove 50 is preferably 2% to 20% divided by the casting volume of the semi-molten metal M. The larger the space volume of the ring-shaped groove 50 is, the greater the trapping effect of the solidified layer is. However, if the ratio to the casting volume is too large, the product yield is likely to be 50% or less of the casting volume. Not desirable. On the contrary, if it is less than 2%, a sufficient amount of the solidified layer cannot be trapped.

On the other hand, there is provided a substantially rectangular bottomed solidified substance trap groove 44 formed parallel to the upper and lower positions on the slide core 14 (a, b) separated from the opening 43. When the semi-molten metal M is supplied to the injection sleeve 22, the solidified material trap groove 52 (a, b) forms a solidified layer on the surface layer of the semi-molten metal M that is in contact with the bottom of the injection sleeve 22. In order to surely trap the solidified substance trap groove 52b located on the lower side of the slide core 14,
It is better to make it deeper than the depth of 2a.

What is trapped by the ring-shaped groove 50 and the solidified material trapping groove 52 (a, b) is impurities in the solidified layer and the oxide film. Of these impurities, the injection sleeve 2
The amount of the solidified layer formed on the surface layer of the semi-molten metal M in contact with the bottom of No. 2 is overwhelmingly larger than the amount of the oxide film formed by contact with the atmosphere when supplying the injection sleeve 22 from the holding container (not shown). However, the amount of oxide film is much smaller.

[0041]

Third Embodiment A third embodiment will be described with reference to FIGS. 4 and 5.
Since the entire configuration of the third embodiment has already been described using the first embodiment with reference to FIGS. 1 and 2, only different parts will be described.

The difference between the third embodiment and the first embodiment is that the protrusion 54 forming the solidified material trap groove 56 extending from the surface of the movable mold 8 to the fixed mold 4 side and the slide core 14 are different. There is provided an opening 57 composed of a small-diameter upper arc-shaped groove 58 and a large-diameter lower arc-shaped groove 60 that open to the contact / separation end portion 34 of (a, b).

That is, it has an upper arcuate groove 58 located above the center of the injection sleeve 22 and a lower arcuate groove 60 located below this center. Upper arc groove 58
Is smaller than the diameter of the lower arcuate groove 60.

On the other hand, the movable mold 8 is provided with a projection 54 extending from the surface of the movable mold 8 through the opening 57 to the fixed mold 4 side. As shown in FIG. 5, the protrusion 54 has a semi-arcuate shape that is concentric with the lower arcuate groove 60 whose upper side is concave, and is arranged above and apart from the inner peripheral end of the lower arcuate groove 60. At the same time, the tip of the projection 54 is located closer to the plunger tip 2 than the tip of the injection sleeve 22.
It extends so as to be located on the 4th side.

A solidified material trap groove 56 is formed between the inner peripheral end of the bottomed lower circular arc groove 60 and the protrusion 54. In the solidified material trap groove 56, when the semi-molten metal M is supplied to the injection sleeve 22, a solidified layer is formed on the surface layer portion of the semi-molten metal M that is in contact with the bottom of the injection sleeve 22. In order to be trapped in the solid state, the projection 54 is extended to deepen the depth of the solidified material trap groove 52b.

[0046]

Fourth Embodiment A fourth embodiment will be described with reference to FIGS. 6 and 7.
Since the entire structure of the fourth embodiment has already been described in the first embodiment with reference to FIGS. 1 and 2, only different parts will be described.

The feature of the fourth embodiment is that the slide core 14
A semi-circular opening 67 (a, b) is provided in a substantially central portion of the end portion 34 that is contacted and separated by opening and closing (a, b), and when the slide core 14 (a, b) is closed, A circular opening 67 is formed.

Further, an arcuate arcuate opening 69 (a, b) is formed at a lower position apart from the semicircular opening 67 (a, b). The upper part of the arcuate arc opening 69 (a, b) forms a horizontal linear part, and the lower part has an arcuate shape.

[0049]

Reference numeral 70 is a space portion, which is formed in the movable mold 8 and has a square or rectangular shape when viewed from the front and constitutes a space portion 70 having a constant depth. The space portion 70 is configured to communicate with the space portion 70 from the arcuate arc opening portion 69 (a, b) through the solidified material trap groove 68.

Therefore, the semi-molten metal M is injected into the injection sleeve 22.
When it is supplied to the cavity portion 30, the semi-molten metal M is loaded into the cavity portion 30 as the plunger tip 24 advances. At this time, the solidified layer formed on the surface layer portion of the semi-molten metal M contacting the bottom portion of the injection sleeve 22 is missing. The arcuate openings 69 (a, b) flow into the space 70 through the solidified material trap grooves 68 arranged between the spaces 70, and are trapped in a large amount and reliably.

Reference numeral 72 is an air vent hole, which is an air vent hole for inserting both side end portions 36 (a, b) of the movable mold 8 from the space portion 70. The surface of the semi-molten metal M is cooled in contact with the bottom portion (inner wall surface) of the injection sleeve 22 to form a solidified layer. Most of the solidified layer except the solidified layer is loaded into the cavity 30 through the opening 67 and the runner 32, and the solidified layer is stored in the space 70 through the open arc opening 69 and the solidified material trap groove 68. It At this time, the air staying inside the space 70 is discharged to the outside of the movable mold 8 as the solidified layer enters.

[0053]

Fifth Embodiment A fifth embodiment will be described with reference to FIG. Since the main part of the mold structure of FIG. 8 has already been described with reference to FIGS. 1 and 2, only different parts will be described.

FIG. 6 which is structurally similar to Example 5 above.
Compared with, the injection sleeve 22 has a large difference.
A ring-shaped groove 80 is newly provided at the tip of the.

First, the ring-shaped groove 80 will be described.
The ring-shaped groove 80 has a step-like expanded diameter portion larger than the inner diameter of the injection sleeve 22 having a circular shape at the tip of the injection sleeve 22. On the other hand, a ring-shaped groove is formed between the slide sleeve 14 (a, b) that can be opened and closed while contacting the tip of the injection sleeve 22.

Further, a truncated arc opening 86 is formed at a position lower than the semicircular opening 83. The upper portion of the arcuate arc opening portion 86 forms a horizontal straight line portion,
The lower part has an arcuate shape.

Therefore, when the slide core 14 (a, b) having the arcuate opening 86 is slidably closed while abutting on the tip of the injection sleeve 22, the slide core 14
The circular arc opening 86 provided in (a, b) opens so that the ring-shaped groove 80 is desired, and the circular arc opening 86 is formed.
The bottom arc-shaped inner wall surface and the inner wall surface of the injection sleeve 22 are substantially flush with each other.

On the other hand, the front shape provided by engraving the movable mold 8 has a square or rectangular shape and constitutes a space portion 84 having a constant depth. Injection sleeve 2 for semi-molten metal M
2, the semi-molten metal M is loaded into the cavity 30 as the plunger tip 24 advances. At this time, the solidified layer formed on the surface layer of the semi-molten metal M in contact with the bottom of the injection sleeve 22 is From the open arc opening 86 to the space 84
The space 8 is formed through the solidified material trap groove 82 disposed between
4 and is trapped in a large amount and reliably.

What is trapped between the ring-shaped groove 80 and the space 84 is impurities in the solidified layer and the oxide film.
Of these impurities, the amount of the solidified layer that is formed in the surface layer portion of the semi-molten metal M in contact with the bottom portion of the injection sleeve 22 is generated by being exposed to the atmosphere when being supplied to the injection sleeve 22 from the holding container (not shown). The amount of oxide film is overwhelmingly larger than the amount of oxide film, and the amount of oxide film is generally small.

[0060]

As is apparent from the above description,
In the present invention, preventing the solidified layer of the semi-molten metal surface layer portion generated in the injection sleeve from entering the product cavity,
An excellent molded product having a fine and uniform structure can be obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a mold provided with a slide core having a solidified material trap groove according to the present invention, which is manufactured by a horizontal mold clamping and horizontal casting method.

FIG. 2 is a front view seen from AA of FIG.

FIG. 3 is a vertical cross-sectional view of a mold structure including a slide core having a solidified material trap groove and a ring groove according to the present invention.

FIG. 4 is a vertical cross-section of a mold structure having a protrusion that forms a solidified material trap groove extending from the surface of the movable mold to the fixed mold side.

5 is a front view seen from BB of FIG. 4. FIG.

FIG. 6 is a vertical cross section of a mold structure having a slide core having a solidified material trap groove according to the present invention and a space provided in a movable mold as desired in the trap groove.

FIG. 7 is a front view seen from CC of FIG.

FIG. 8 is a vertical cross-sectional view of a mold structure including a solidified material trap groove and a ring-shaped groove provided in a slide core as desired in a space provided in a movable mold.

[Explanation of symbols]

4 fixed mold 6 Fixed platen 8 movable molds 10 movable platen 14 (a, b) Slide core 20 injection device 22 injection sleeve 24 Plunger tip 26 Plunger rod 28 Semi-molten metal supply port 29 Locking part 30 cavity 32 Runner section 34 Slide core contact and separation end 36 (a, b) Both ends of the fixed mold 38 (a, b) Slide core open / close cylinder 40 (a, b) cylinder rod 43 Slide core opening 43 (a, b) Semicircular opening 44 Solidified material trap groove 45 Step 46 Air vent groove 48 Overflow part 50 ring groove 52 (a, b) Solidified material trap groove 54 Projection 56 Solidified material trap groove 57 Opening of slide core 58 Upper circular groove 60 Lower circular groove 67 (a, b) opening 68 Solidified material trap groove 69 (a, b) Opened arc 70 Space Department 72 Air vent hole 80 ring groove 82 Solidified material trap groove 83 opening 84 Space 86 Missing arc opening

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 10-175054 (JP, A) JP 2002-361389 (JP, A) JP 2002-361388 (JP, A) (58) Fields investigated ( Int.Cl. ⁷ , DB name) B22D 17/20 B29C 45/20 B29C 45/26 B22D 17/22

Claims (9)

(57) [Claims] 1. A cavity formed by a movable mold and a fixed mold, an injection sleeve for injection-loading semi-molten metal into the cavity, and a horizontal opening / closing provided between the cavity and the injection sleeve. A pair of slide cores, an opening through which a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve flows into the abutting portion of the slide core toward the cavity, and the slide core is positioned at a lower position apart from the opening. A mold for forming semi-molten metal, comprising a bottomed solidified material trap groove engraved in the same direction as the opening and closing direction. 2. The mold for molding a semi-molten metal according to claim 1, wherein the opening is provided so as to substantially coincide with the center of the injection sleeve. 3. A cavity formed between a movable mold and a fixed mold, an injection sleeve for injecting and loading semi-molten metal into the cavity, and a cavity provided between the cavity and the injection sleeve and horizontally. A pair of slide cores that open and close,
An opening through which a semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve flows toward the cavity portion at an abutting portion of the slide core, and an upper position and a lower position on the slide core that are separated from the opening. Is provided with a bottomed solidified material trap groove formed in the same direction as the opening / closing direction of the slide core, and a diameter-enlarged portion formed in a stepped shape at the tip of the injection sleeve. A mold for molding a semi-molten metal, characterized in that a ring-shaped groove is formed between the diameter portions. 4. A cavity portion formed between a movable die and a fixed die, an injection sleeve for injecting and loading semi-molten metal into the cavity portion, and a horizontal portion provided between the cavity portion and the injection sleeve. A pair of slide cores that open and close,
An opening, which has a diameter smaller than the inner diameter of the injection sleeve and allows semi-molten metal to flow toward the cavity, is provided at an abutting portion of the slide core, and a position separated from the inner wall surface of the slide core from the end of the movable mold. A mold for forming a semi-molten metal, characterized in that a protrusion extending through the opening toward the injection sleeve is formed. 5. The slide core is provided with the opening at the contact / separation end.
A small-diameter upper arc-shaped groove that opens and a larger diameter than the upper arc-shaped groove.
5. The mold for forming a semi-molten metal according to claim 4, wherein the mold is composed of a circular arc-shaped groove having a lower diameter . 6. A cavity part formed between a movable mold and a fixed mold, an injection sleeve for injection-loading semi-molten metal into the cavity part, and a horizontal space provided between the cavity part and the injection sleeve. A pair of slide cores that open and close,
An opening through which the semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve flows toward the cavity of the abutting portion of the slide core, and an inner wall surface flush with the injection sleeve at a lower position apart from the opening. And a space portion for trapping and storing the solidified material generated in the surface layer of the semi-solidified metal at the end of the movable mold, and between the space portion and the arc-shaped opening portion. A mold for forming semi-molten metal, which is inserted through a solidified material trap groove to be tied. 7. The mold for molding a semi-molten metal according to claim 6, further comprising air vent holes which are inserted from the space toward both side ends of the movable mold. 8. A cavity part formed between a movable mold and a fixed mold, an injection sleeve for injection-loading semi-molten metal into the cavity part, and a horizontal space provided between the cavity part and the injection sleeve. A pair of slide cores that open and close,
An opening through which the semi-molten metal having a diameter smaller than the inner diameter of the injection sleeve flows toward the cavity of the abutting portion of the slide core, and an inner wall surface flush with the injection sleeve at a lower position apart from the opening. And a space portion for trapping and storing the solidified product generated in the surface layer of the semi-molten metal at the end of the movable mold, and between the space portion and the arc-shaped opening portion. Semi-melting, characterized in that it has a solidified material trap groove to be tied and a diameter-enlarged portion engraved in a step-like manner at the tip of the injection sleeve to form a ring-shaped groove between the slide core and the diameter-enlarged portion. Metal molds. 9. The solidified material trap groove has a square shape or a rectangular shape when viewed from the front.
Alternatively, the mold for molding the semi-molten metal according to claim 3.