JPS6099473A - Pressure casting device for member having aperture - Google Patents

Abstract

PURPOSE:To cast a member having high strength in the stage of pressure casting of a member having an aperture such as a rim for a vehicle or the like by forming the sprue of a casting cavity into an inverted circular cone shape, interposing a water cooled extension part thereon and cooling and solifidying a molten metal under pressure. CONSTITUTION:A molten metal in a melting tank 10 in a heating chamber 1 in the lower part is forced into the casting cavity 13 formed of die bodies 3, 4 by the high pressure gas supplied through a conduit 11. The molten metal pressurized by the gas passes through a stalk 14 and is charged through an inverted circular cone shaped sprue 9 formed to the body 3 into the cavity 13. An internally water-cooled extension part 18 from another die member 4 is preliminarily positioned to face the sprue 9. The pressure of the gas for pressurization is measured with a gage 16 and the supply of the gas is stopped after confirmation that the molten metal is filled in the cavity 13. A pressurizing punch 6 is then depressed downward by a cylinder 8 to cool and solidify the unsolidified melt in the cavity 13 under the pressurized condition. A rim for a vehicle or the like having an excellent strength characteristic is thus cast.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an additional invention of the patent application No. 14709 (Japanese Patent Publication No. 59-2581), in which an opening like a rim for vehicle width is The object of the present invention is to provide a device that can easily produce a member by pressurizing the mold using hot water.

J like a vehicle rim! Since the IB material has a high bacterial content and absorbs water with sufficient strength, it is an efficient product to manufacture using the hot water forging method using aluminum alloys. Moreover, it is also considered unpopular that this cast relic is not processed in any way. However, the conventional casting equipment used for this purpose does not work! However, it is difficult to properly obtain a product with strong extensibility properties such as Bt J Rej, as the hot water does not necessarily flow uniformly in the J type cavity, and defects such as cavities and entrainment often occur. There were some disadvantages and disadvantages.Furthermore, in recent years, designs have become more diverse in Europe, >J,:S,71, and the shape of the opening, etc., has become complicated and one-piece construction. Machining the opening is no longer easy.

The present invention has been developed to eliminate the advantages and disadvantages of the 9L rice as described above.
A device consisting of a blowing machine 414 using pressurized gas and a molding mechanism consisting of a JJ94+, t5 body on one side and a mold body on the other hand, which is formed with an inverted circular feed F type sprue, and a molten metal pressurizing mechanism. In this step, the extension part protruding from the other mold body to form the opening for the product is formed to a predetermined length so that the extension part can be fitted into the sprue part, and the extension part This is a pressurized casting device having an opening, characterized in that a refrigerant passage is formed and a working medium is supplied and circulated through the refrigerant passage.

That is, to further explain the invention according to the present invention, as mentioned above, when pressurizing the member that opens the opening, the part corresponding to the opening in the peeling mold is used as the opening. An inverted cone-shaped runner into the mold cavity is formed in one mold, and a protruding portion for forming an opening tjl+ formed in the other mold into such a runner is preliminarily left with an appropriate gap. By supplying hot water in the installed state and allowing the bath water in the runner to solidify at the end in a narrow gap, the other mold is heated without worrying about the slide core, which is a mechanism for closing the runner. The projecting portion attempts to automatically close the boiling duct portion, but in such a case, achieving the priority 11tt ii'il in a shorter time contributes to improving work efficiency, and also reduces the thickness of the narrow gap. This enables favorable operation even under conditions where the thickness is relatively thick.In other words, the present invention achieves this purpose (4), and the specific equipment To explain what is shown in the "regeneration" section, a pressurized gas water heater) r The molten metal charged into the melting tank 10 is heated by a heating means 12 provided in the melting tank 10 and melted to a constant casting brocade. Mold stand 2 with stalk 14 attached to the center
is provided so as to cover the opening surface, and the stalk 14 is inserted into the bath #491U in a suspended manner. As shown in the figure, the top of the stalk 14 is constricted with an arcuate curved surface, and a sprue is formed in the shape of an inverted cone at the bottom of the central part of one mold body 3, which is deposited on the mold table 2 and has a height of 1α. 9, a plurality of guide rods 21 are disposed on the outside of one mold body 3, and along these guide rods 21, a lifting plate having the other mold body 4 is connected. 5 is adapted to be slid in the vertical direction, that is, the rond of the green cylinder 7 provided on the upper stand 22 attached to the upper end of the guide rod 21. 4. As shown in the figure, a pressurizing punch 6 is separately provided in the mold body 4, and its operating cylinder 8 is mounted on the elevating plate 5. Fluid pipes are connected to the operating cylinder 8 as well as the main cylinder 7 described above, and a cavity 1 is formed by the mold body 3 on one side and the mold body 4 on the other side.
3, and depending on the shape of the product, pressure can be applied to the entire surface or only partially. Heavy pressure gas pipe 11 connected via regulator 17
is attached to the melting tank 10 so that the pressure inside the melting tank 10 can be increased appropriately, and by increasing the pressure inside the melting tank 10, the molten metal in the melting tank 10 is heated to the stalk 14 and the above-mentioned The mold body is press-fitted into the cavity 13 through the sprue 9, but as described above, the mold part body is formed in a conical shape with the side connected to the stalk 14 being narrower. Extending part 18 on the bottom of the center part of 4
1, and the extending portion 18 is inserted into the sprue 9 when the mold body 3.4 is set as shown in FIG. As shown more clearly in FIG. 2, the refrigerant pipe 30 is formed in the extension part 18 by drilling a hole in the extension part 18. A vibrator 30a is provided in the refrigerant passage 30b, and the refrigerant such as municipal water sent from the pipe 30a is sent out from the tip of the extension part 18, and the refrigerant is sent out from the tip of the extension part 18. This is intended to speed up preferential coagulation.

The attachment of the @IS casting part 4a, which is a sand core such as a shell-placed core and an insert, to the extension part 18 is carried out by a conventional method, and as an example, in the case of a shell-placed core. As will be described below, from a J1 perspective, it is possible to place the gate at an approximately appropriate position with just the height of the stand. In order to evaluate such a fastening relationship, specifically, the taper in the swamp part of the core barrel casting member 4a is made small, and the friction force of the throat surface is set as a dog, and the core barrel is cast. The extension portion 18 is narrowed enough to close the member.
The tip 11a of the IJ- is prevented from being pulled out, and in some cases, a 1m-shaped reinforcing member made of a thin iron plate is attached to the joint surface of the cast member serving as the core. In other words, such an f+j-shaped sleeve strong part feather has a core with a dull inner part, and the f-containing part side 4a0
) To apologize for the loading on the extension tii + 18, the casting capital 4a
It is intended to prevent destruction due to poor elasticity, etc., and to form a cushion-like body layer against the extending portion 18.
A stable body layer can be obtained by making the cross-section of the 1 x 1 x 1 x 1 x 1 x x 1 x x 1 x x 1 x x 1 x x 1 x x 1 x x 1 x 1 x 1 x x 1 x x 1 x x 1 x x 1 x x 1 x 1 x 1 x 1 x 1 x 1 x 1 x x 1 x 1 x 1 x x 1 x x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1 x 1. It is used for attaching strong anti-reflection reinforcement materials, thermal expansion resistant materials, structural reinforcement materials, screw hole members, etc. to materials, and is attached to mold parts by similar conventional means.

To explain how to operate the product according to the present invention as described above, one mold part body 3 and the other mold part body 4 having the extension part 18 are set, and the pressurized punch is applied to produce a riser effect. Insert the gas pipe 1 into the bathtub 10 while it is raised to the swallowing position.
When gas is introduced from 1 into the cavity 13 of the mold body 3
Gold W4 bath water is supplied inside. Molten metal is in cavity 13
When the inside of the cavity 13 is filled, the pressure scale of the gauge 16 starts to rise, so the waste flow is interlocked. Since there is only a narrow gap formed between the sprue 9 and the sprue 9, it is clear that the inside of the sprue 9 becomes softer than other parts and solidifies at an early stage. At this time, by flowing the refrigerant from the cooling pipe 3Qa, the solidification is completed and accelerated. If the pressure bunch 6 is lowered by operating the operating cylinder 8 at the point when the solidification of the molten metal at the sprue 90 is completed, the unsolidified molten metal in the cavity 13 will be solidified under the 151st pressurized condition. This can be achieved accurately.

Even when the sprue 9 is closed with the solidified metal in this way, the bath water in the stoke 14, which has the shape described above, remains in a molten state, so that the molten water remains molten.
If the gas pressure of 1' to Ph ratio 10 is released, the molten metal in the stalk 14 will fall into the bath Nf and tank 1u and be prepared for the next υj filling operation. The reduction blade of the operating cylinder 8 which is connected to the pressing bunch 6 as described above can be at least #y, V to about 1000, thereby making it possible to use aluminum or aluminum alloy as described above. For the molten metal, V! includes forging that improves the crystal v5 state from the base pressure piece λ6!
It is possible to effectively create a uniform pressurized piece.

A clause like the one above? -1- When the tit of the bath in the cavity 13 is completely hardened due to the 81 construction under pressure, the mold is demolded, but at the time of demolding, the mold is also cooled down to the 11 body 4 and the α body is cooled to the temperature of the cavity. It is taken out from 13. ν1
In the case of the above-mentioned lock surface light, first, the pressurizing force of the cylinder 8, which was pressurized as in the above example, is released, and the main cylinder r is activated to pull the mold body 4 upward to form the mold 14.
The product in the cavity 13 is pulled out from the mold body 3 once it has been bound to the mold body 4. By making the cylinder 8 act as a scoop, the pressurized bunch 6 acts as a mechanism for ejecting the product from the body 4, and the product can be removed from the body 4 to complete the removal. . When the J1 product is released, the inside of the cavity 13 is cleaned, and the process of applying the brewing type cup is carried out by l1jJ.
・It will be used for the next delivery.

As explained above, according to the book ``A'', it is necessary to seal the sprue section by mechanical operation for each row as in the conventional method, as in the case of ``7M ψ'', but priority is given to the sprue section. Automatic occlusion by the coagulum itself based on coagulation is performed, and pressurization after this preferential coagulation causes pressure coagulation 1. However, since the refrigerant is supplied to the extension part 18 during the preferential solidification like the holder 1, the preferential solidification can be speeded up to efficiently and accurately produce the refrigerant. Even when the wall thickness of the preferential leakage 11μ on the circumferential side of the portion 1B is relatively large, it can be implemented with equal efficiency, and it can be said that this invention is one of the most effective in the industry.

4 additional relationship misfires 1) 1) 13W55 special J1-application No. 14709
This is an additional invention of No. (1996-2581), which is a mold consisting of an IS hot water mechanism using pressurized gas and an inverted circular nail-shaped sprue hIS, consisting of one bowl body and another force mold body. Machine (in line, 11 points from the molten metal pressurizing mechanism)
(In order to fit the protruding part protruding into the mold body on the side to form the opening of the product into the sprue part) The mold body is formed to a predetermined length and then poured into the cavity. After the hot water, the sprue part is preferentially solidified and the purpose is made by simple/Kokisu and M.
- Elegant A: In what is recommended, it is the above-mentioned nuclear power plant and rotation, but in the present invention, the above-mentioned extended filtration is
By supplying 111 K refrigerant, 1) Priority A IJ as described in 11! ! Short poem 1 by changing l to -noso's i1ilI.''
Production due to coagulation within the k tll mass rate Same as above, history has a comparatively soft and thick preferential soap 1.゛. Is the first part of the shape J Ebisu a circle? i? Since it is brought about 1-thing, it is related to the fist between the nuclear power plants and the sword, so it is chiru.

[BRIEF DESCRIPTION OF THE DRAWINGS] Figure 1 shows the implementation of the present invention.
Fig. 1 is a cross-sectional view showing one of the basic / poor construction practices according to this example, and Fig. 2 is a slightly enlarged cross-sectional view of the sprue portion. However, in these Figure 1 rivers, 1 is heating? In, 2 is a mold stand, 3 is one mold body, 4 is a mold body for the other force, 6 is a pressure punch, I and 8 are cylinders, 9 is a sprue, 10 is a tortoise shell, and 12 is a force 0 heating means, 13 is a cavity, 14 is a stalk, 18 is an extension, 30 is a refrigerant/i-way, 30a is a pipe, and 30b is a refrigerant passage. Patent Applicant E1 Honken Metal Research Institute Co., Ltd. Nikkei Shoji Co., Ltd. Akira Isobe Toshio Ito Tadashi Competence Kawai Shun 2

Claims (1)

[Claims] A hot water supply mechanism using pressurized gas and a type consisting of one mold body and the other mold body forming an inverse conical sprue {In an apparatus consisting of M44 and a bath water pressurizing position structure, the other mold body In order to form the opening iff≦ of the product, a protruding part is fitted into the sprue and formed to a certain length, and a refrigerant path Ih is connected to the above-mentioned extended part. form,
Q medium in the t'1 medium path? A pressurized compacting device for a member having an opening for supplying and circulating soot.