JP2009291810A - Casting apparatus and casting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely perform the removal of burrs in a casting apparatus and a casting method. <P>SOLUTION: A recessed part 14b is formed at the tip-end part 14a of a passage-forming part 14 in a movable mold 4 and also, a projecting part 16b for fitting into the recessed part 14b is formed at the tip-end part 16a of a sliding part 16 in a slid core 6, and since fitting face between the passage-forming part 14 in the movable mold 4 and the sliding part 16 in the slide core 6, is formed of the plurality of faces, molten metal 10' is difficult to flow into the fitting face and a continued large burr 12 is difficult to form in a bending passage 8. Even if the continued large burr 12 is formed onto the fitting face of the passage part 14 in the movable mold 4 and the sliding part 16 in the slide core 6, when a product 20 is taken out from the movable mold 4, a large part of the burr 12 formed on the fitting face with the recessed part 14b can be removed. In this result, since the large burr 12, such burr 12 as catching in the bending passage 8, is not remained, the removal of the burrs can surely be performed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a casting apparatus and a casting method. More specifically, the present invention relates to a fixed mold, a first movable mold that is inserted into the fixed mold from a first direction, and the first movable mold so as to come into contact with the first movable mold. A second movable mold that is inserted and disposed in the fixed mold from a second direction that intersects the direction, and the fixed mold, the first movable mold, and the second movable mold form a product having a bent passage. The present invention relates to a casting apparatus and a casting method for forming a possible product cavity.

Conventionally, this type of casting apparatus includes a fixed mold, a first movable mold disposed in the fixed mold, and a second movable mold disposed in the fixed mold so as to intersect the first movable mold. Things have been proposed. In this apparatus, a bent pipe as a product is manufactured by pouring molten metal into a product cavity formed by a fixed mold, a first movable mold, and a second movable mold.
Japanese Patent Publication No.3-3538

  However, in such a casting apparatus, the molten metal may flow into a gap formed on the mating surface between the first movable mold and the second movable mold, and burrs may be generated inside the curved pipe. Therefore, although a burr removal process is required, depending on the burr shape, it will be caught inside the bent tube, and the removal work will be troublesome.

  An object of the casting apparatus and the casting method of the present invention is to reliably remove burrs.

  The casting apparatus and the casting method of the present invention employ the following means in order to achieve at least a part of the above-described object.

  The casting apparatus of the present invention includes a fixed mold, a first movable mold inserted and disposed in the fixed mold from the first direction, and a second direction intersecting the first direction so as to contact the first movable mold. And a second movable mold inserted into the fixed mold to form a product cavity capable of forming a product having a bent path with the fixed mold, the first movable mold, and the second movable mold. The second movable mold is formed by contacting the first movable mold in a manner that a part of the second movable mold is fitted into the first movable mold when casting the product. To do.

  In the casting apparatus of the present invention, when the second movable mold is inserted and disposed in the fixed mold, a part of the second movable mold comes into contact with the first movable mold in a manner of fitting into the first movable mold. At least one bent portion is formed on the mating surface of the first movable mold and the second movable mold. That is, since the mating surfaces of the first movable mold and the second movable mold are formed by a plurality of surfaces, it is difficult for the molten metal to flow into the gaps of all the mating surfaces, and a continuous large burr is formed. It becomes difficult. As a result, the burrs removed in the deburring process are not caught in the bent passage, and the burrs can be reliably removed.

In such a casting apparatus of the present invention, the first movable mold is formed with a recess at a portion where the second movable mold abuts, and the second movable mold is formed with a fitting portion fitted into the recess. It can also be.
In this way, more mating surfaces can be formed. As a result, the molten metal is less likely to flow into the mating surfaces. Moreover, the burr formed between the concave portion of the first movable mold and the fitting section of the second movable mold is taken away when the first movable mold is pulled out from the fixed mold or when the product is removed from the movable mold. As a result, the formation of large burrs can be reliably prevented.

In the casting apparatus of the present invention in which a concave portion is formed at a portion where the second movable die contacts the first movable die, the concave portion is formed with respect to a drawing direction in which the first movable die is drawn from the fixed die. A rear side wall surface forming a rear wall surface may be provided, and the rear side wall surface may be formed on a surface substantially perpendicular to the drawing direction.
By so doing, it is possible to increase the burr removal force when the first movable mold is pulled out from the fixed mold. As a result, when pulling out the first movable mold from the fixed mold or removing the product from the movable mold, the burrs formed between the recesses of the first movable mold and the fitting sections of the second movable mold are surely secured. Can be removed.

Moreover, the casting apparatus of this invention WHEREIN: The said recessed part and the said fitting part shall be formed in multiple numbers.
In this way, formation of large burrs can be prevented more reliably.

Furthermore, in the casting apparatus of the present invention, the contact surface between the first movable mold and the second movable mold is formed so as to be substantially perpendicular to the flow direction of the molten metal flowing into the product cavity. It can also be.
In this way, the molten metal can be made more difficult to flow into the mating surfaces.

  The casting method of the present invention is a casting method for forming a product having a bent passage, wherein (a) a first movable mold is inserted and arranged in a fixed mold from a first direction, and (b) a part of the first mold is formed. A second movable mold is inserted and disposed in the fixed mold from a second direction intersecting the first direction so as to be in contact with the first movable mold in a manner fitted into the first movable mold; and (c) the fixed mold The gist is to pour molten metal into a product cavity formed by the first movable mold and the second movable mold.

  In the casting method of the present invention, when the second movable mold is inserted and disposed in the fixed mold, a part of the second movable mold comes into contact with the first movable mold in a manner of fitting into the first movable mold. At least one bent portion is formed on the mating surface of the first movable mold and the second movable mold. That is, since the mating surfaces of the first movable mold and the second movable mold are formed by a plurality of surfaces, it is difficult for the molten metal to flow into the gaps of all the mating surfaces, and a continuous large burr is formed. It becomes difficult. As a result, the burrs removed in the deburring process are not caught in the bent passage, and the burrs can be reliably removed.

In the casting method of the present invention, the step (b) may be a step of fitting the fitting portion of the second movable mold into the recess formed in the first movable mold.
In this way, more mating surfaces can be formed. As a result, the molten metal is less likely to flow into the mating surfaces.
Moreover, since the burr formed between the first movable mold recess and the second movable mold fitting portion is taken away when the first movable mold is pulled out from the fixed mold, a large burr is formed. It can be surely prevented.

  Next, the best mode for carrying out the present invention will be described using examples.

FIG. 1 is a schematic configuration diagram showing an outline of the configuration of a casting apparatus 1 according to an embodiment of the present invention.
As shown in FIG. 1, the casting apparatus 1 of the embodiment includes a fixed mold 2, a movable mold 4, and a slide core 6, and by clamping the fixed mold 2, the movable mold 4, and the slide core 6, A product cavity 10 is formed in which a product having a bent passage 8 can be formed.

  The fixed mold 2 is attached to a fixed mold platen (not shown), and is provided with a mold surface 2 a that forms one surface of the product cavity 10. Here, the fixed mold platen is a surface plate on which the fixed mold 2 is installed in the casting apparatus 1.

  The movable mold 4 is arranged above the fixed mold 2 so as to be movable in the vertical direction, that is, in the vertical direction with respect to the fixed mold 2, and a mold surface 4 a that forms one surface of the product cavity 10 is provided. Is provided. A part of the mold surface 4 a is formed so as to protrude toward the fixed mold 2, and serves as a passage forming portion 14 that forms a part of the bent passage 8. A concave portion 14 b is formed at the distal end portion 14 a of the passage forming portion 14. The recess 14 b has a rear side wall surface 14 b ′ that forms a rear wall surface with respect to the direction in which the movable mold 4 rises, and the rear side wall surface 14 b ′ is substantially perpendicular to the upward direction of the movable mold 4. Thus, the cross section is formed in a substantially rectangular shape.

  The slide core 6 is disposed so as to be movable in the direction intersecting the up-and-down direction, which is the advancing / retreating direction of the movable mold 4, that is, in the horizontal direction. It has been. A part of the mold surface 6 a is formed so as to protrude toward the movable mold 4, and serves as a slide part 16 that forms a part of the bent passage 8. A convex portion 16 b that can be fitted into a concave portion 14 b formed in the distal end portion 14 a of the passage forming portion 14 is formed in the distal end portion 16 a of the slide portion 16. By fitting the convex portion 16b into the concave portion 14b and clamping the slide core 6 so as to be integrated with the movable die 4, an internal die having a substantially L shape for forming the bent passage 8 is formed. .

Next, operation | movement at the time of casting-forming the product 20 using the casting apparatus 1 comprised in this way is demonstrated.
FIG. 2 is a process diagram illustrating how the product 20 is cast and formed using the casting apparatus 1 of the embodiment, and FIG. 3 is a state diagram illustrating a state in which a molten metal 10 ′ is poured into the product cavity 10. 4 is a state diagram showing a state where the slide core 6 is opened after the molten metal 10 ′ is solidified, and FIG. 5 is a state diagram showing a state where the movable die 4 is opened. FIG. 3 is a state diagram showing a state where a product 20 is taken out from the movable mold 4.

  First, the movable mold 4 is lowered toward the fixed mold 2 (step 20), and the slide core 6 is slid toward the movable mold 4 to perform mold clamping (step 22), thereby forming the product cavity 10. Subsequently, as shown in FIG. 3, a molten metal 10 'is poured into the product cavity 10 from a not shown gate formed in the fixed mold 2 (step 24). At this time, the molten metal 10 ′ also flows into the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6. However, in the casting apparatus 1 according to the embodiment, the convex portion 16b formed on the distal end portion 16a of the slide portion 16 is fitted into the concave portion 14b formed on the distal end portion 14a of the passage forming portion 14, so that the passage forming portion 14 of the movable die 4 is fitted. Since the mating surfaces of the slide core 6 and the slide portion 16 are formed by a plurality of surfaces, the molten metal 10 ′ is unlikely to flow into the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6. Moreover, if a gate (not shown) is arranged so that the molten metal 10 ′ flows in a substantially right angle direction with respect to the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6, the mating surface is reached. The molten metal 10 ′ can be made more difficult to flow. As a result, it is difficult to form a large burr 12 continuous with the bent passage 8.

  When the molten metal 10 ′ poured into the product cavity 10 is solidified, the slide core 6 is slid to the side opposite to the movable mold 4 as shown in FIG. 4 (step 26), and as shown in FIG. The movable mold 4 is raised upward in the direction away from the fixed mold 2 to perform mold opening (step 28). At this time, the product 20 is fixed to the movable mold 4 and pulled out from the fixed mold 2 together with the movable mold 4. And the product 20 is removed from the movable mold | type 4 using the extrusion mechanism etc. which are not shown in figure (process 30). At this time, most of the burr 12 formed on the mating surface of the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6 is removed when the product 20 is removed from the movable mold 4 as shown in FIG. It can be taken away by a recess 14b formed at the tip 14a of the passage forming portion 14. That is, even if a large continuous burr 12 is formed on the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6, most of the product 20 is removed when the product 20 is removed from the movable mold 4. Can be removed. Moreover, since the rear side wall surface 14b ′ of the recess 14b is formed substantially perpendicular to the ascending direction of the movable mold 4, the force for shearing the burr 12 can be made relatively large, and the burr 12 can be surely formed. Can be removed.

  And the burr | flash 12 which remained in the bending channel | path 8 of the product 20 without being carried away by the recessed part 14b is removed (process 32), and the product 20 which has the bending channel | path 8 inside is completed. Here, since the burrs 12 remaining on the mating surfaces of the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6 are relatively small, the burrs 12 are formed in the bent passage 8 in the deburring process. Will not get caught.

  According to the casting apparatus 1 of the first embodiment described above, the concave portion 14b is formed at the distal end portion 14a of the passage forming portion 14 of the movable mold 4, and the concave portion 14b is formed at the distal end portion 16a of the slide portion 16 of the slide core 6. Since the convex portion 16 b to be fitted is formed and the mating surface of the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6 is formed by a plurality of surfaces, the molten metal 10 ′ is the passage of the movable die 4. It is difficult to flow into the mating surface between the forming portion 14 and the slide portion 16 of the slide core 6, and it is difficult to form a large burr 12 that is continuous with the bent passage 8. As a result, the burr 12 remaining on the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6 becomes relatively small. 12 is not caught. Moreover, since the molten metal 10 ′ is arranged so that the molten metal 10 ′ flows in a substantially perpendicular direction with respect to the mating surface of the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6, the molten metal 10 'Can be made more difficult to flow into the mating surface.

  In addition, according to the casting apparatus 1 of the first embodiment, when the product 20 is removed from the movable mold 4, the concave portion 14 b formed in the distal end portion 14 a of the passage forming portion 14 slides with the passage forming portion 14 of the movable mold 4. Since the burr 12 formed on the mating surface of the core 6 with the slide portion 16 is removed, a large continuous burr 12 is formed on the mating surface of the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6. If so, most of it can be removed. As a result, the burrs 12 remaining on the mating surface between the passage forming portion 14 of the movable mold 4 and the slide portion 16 of the slide core 6 are relatively small, so that the burrs 12 are formed in the bent passage 8 when removing the burrs. It won't get caught. Moreover, since the rear side wall surface 14b ′ of the recess 14b is formed substantially perpendicular to the ascending direction of the movable mold 4, the force for shearing the burr 12 can be made relatively large, and the burr can be removed by the recess 14b. It can be made more reliable.

In the casting apparatus 1 of the first embodiment, the recess 14b is formed so that the rear side wall surface 14b ′ has a substantially rectangular cross section so as to be substantially perpendicular to the ascending direction of the movable die 4. As illustrated in the casting apparatus 1A of the example, the recess 14Ab may be formed so that the rear side wall surface 14Ab ′ has a substantially triangular cross section that is substantially perpendicular to the ascending direction of the movable die 4A. In this case, a convex portion 16Ab that can be fitted into the concave portion 14Ab may be formed at the distal end portion 16Aa of the slide portion 16A of the slide core 6A.
By doing so, the mating surface of the passage forming portion 14A of the movable mold 4A and the slide portion 16A of the slide core 6A can be formed by a plurality of surfaces, so When the product 20 is removed from the movable mold 4A when the mold is opened, the concave portion 14Ab formed in the distal end portion 14Aa of the passage forming portion 14A is used to prevent the burr 12 from flowing into the mating surface with the slide portion 16A. Most can be taken away.

  In the casting apparatus 1 of the first embodiment, the concave portion 14b is formed at the distal end portion 14a of the passage forming portion 14, and the convex portion 16b that fits into the concave portion 14b is formed at the distal end portion 16a of the slide portion 16. Is inserted into the recess 14b and the slide core 6 is clamped so as to be integrated with the movable mold 4. However, as illustrated in the casting apparatus 1B of the modified example of FIG. A step portion 14Bb is formed on 14Ba, a step portion 16Bb that fits into the step portion 14Bb is formed at the distal end portion 16Ba of the slide portion 16B, and the slide portion 6B is fitted to the step portion 14Bb so that the slide core 6B is movable. The mold may be clamped so as to be integrated with 4B. In this case, the burr cannot be removed by raising the movable mold 4B when the mold is opened, but the mating surfaces of the passage forming portion 14B of the movable mold 4B and the slide portion 16B of the slide core 6B can be formed by a plurality of surfaces. The molten metal 10 ′ can hardly flow into the mating surface between the passage forming portion 14B of the movable mold 4B and the slide portion 16B of the slide core 6B.

In the casting apparatus 1 of the first embodiment, one concave portion 14b is formed at the distal end portion 14a of the passage forming portion 14, and one convex portion 16b that fits into the concave portion 14b is formed at the distal end portion 16a of the slide portion 16. However, as illustrated in the casting apparatus 1C of the modification of FIG. 9, a plurality of step portions 14Cb are formed at the tip portion 14Ca of the passage forming portion 14C, and a plurality of step portions 14Cb are formed at the tip portion 16Ca of the slide portion 16C. A plurality of convex portions 16 </ b> Cb that fits in may be formed.
In this way, since the mating surface of the passage forming portion 14C and the slide portion 16C can be formed by a plurality of surfaces, the molten metal 10 ′ is less likely to flow through the mating surface of the passage forming portion 14C and the slide portion 16C. Can do.

Next, a casting apparatus 100 as a second embodiment of the present invention will be described.
FIG. 10 is a schematic configuration diagram showing an outline of the configuration of the casting apparatus 100 of the second embodiment. The casting apparatus 100 of the second embodiment has the same configuration as the casting apparatus 1 of the first embodiment except that the movable die 4 is changed to the movable die 104 and the slide core 6 is changed to the slide core 106. ing.

That is, as shown in FIG. 10, the casting apparatus 100 of the second embodiment includes a fixed mold 102, a movable mold 104, and a slide core 106. The fixed mold 102, the movable mold 104, and the slide core 106 are clamped. By doing so, a product cavity 110 capable of forming a product having a bent passage 108 therein is formed.
The fixed mold 102 is attached to a fixed mold platen (not shown), and is provided with a mold surface 102 a that forms one surface of the product cavity 110.

  The movable mold 104 is disposed above the fixed mold 102 so as to be movable in the vertical direction, that is, in the vertical direction with respect to the fixed mold 102, and a mold surface 104 a that forms one surface of the product cavity 110 is provided. Is provided. A part of the mold surface 104 a is formed to protrude toward the fixed mold 102, and serves as a passage forming part 114 that forms part of the bent passage 108. A concave portion 114b is formed at the distal end portion 114a of the passage forming portion 114. The concave portion 114b has a front side wall surface 114b ′ that forms a front wall surface with respect to the direction in which the movable mold 104 rises. The front side wall surface 114b ′ is substantially perpendicular to the rising direction of the movable mold 4 and the front side wall surface. It is formed in a substantially triangular cross section such that 114b ′ is the base.

  The slide core 106 is disposed so as to be movable in the direction intersecting the up-and-down direction which is the advancing / retreating direction of the movable mold 104, that is, in the horizontal direction, and is provided with a mold surface 106a that forms one surface of the product cavity 110. It has been. A part of the mold surface 106a is formed so as to protrude toward the movable mold 104, and serves as a slide part 116 that forms a part of the bent passage 108. The distal end portion 116 a of the slide portion 116 is formed in a shape that can be fitted into the concave portion 114 b formed in the distal end portion 114 a of the passage forming portion 114. That is, it has a substantially triangular cross section. By fitting the tip 116a into the recess 114b and clamping the slide core 106 so as to be integrated with the movable die 104, an internal die having a substantially L shape for forming the bent passage 108 is formed. .

Even when the product 120 is cast and formed using the casting apparatus 100 of the second embodiment configured as described above, the same effects as when the product 20 is cast and formed using the casting apparatus 1 of the first embodiment are obtained. . That is, the front end portion 116a of the slide portion 116 is fitted into the concave portion 114b formed in the front end portion 114a of the passage forming portion 114, and a plurality of mating surfaces of the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106 are provided. Therefore, it is difficult for the molten metal 110 ′ to flow into the mating surface between the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106. Further, if the molten metal 110 ′ is formed so as to flow in a substantially right angle direction with respect to at least a part of the mating surface of the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106, the mating surface is reached. The molten metal 110 ′ can be made more difficult to flow. As a result, it is difficult to form a large burr continuous with the bent passage 108.
Further, when the product 120 is removed from the movable mold 104, most of the burr formed on the mating surface between the passage forming section 114 of the movable mold 104 and the slide section 116 of the slide core 106 is the tip of the passage forming section 114. It can be carried away by the recess 14b formed in 114a. Furthermore, since the tip end portion 116a of the slide portion 116 of the slide core 106 is only formed to have a substantially triangular cross section, the manufacturability of the slide core 106 is improved.

  According to the casting apparatus 100 of the second embodiment described above, the concave portion 114b is formed at the distal end portion 114a of the passage forming portion 114 of the movable mold 104, and the distal end portion 116a of the slide portion 116 of the slide core 106 is formed into the concave portion 114b. Since the mating surface of the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106 is formed by a plurality of surfaces, the molten metal 110 ′ is formed in the passage forming portion of the movable die 104. It is difficult to flow into the mating surface between 114 and the slide portion 116 of the slide core 106, and it is difficult to form a large burr continuous with the bent passage 108. As a result, the burrs remaining on the mating surface between the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106 are relatively small. It won't get caught. In addition, the molten metal 110 ′ is formed so as to flow in a substantially perpendicular direction with respect to at least a part of the mating surface between the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106. 'Can be made more difficult to flow into the mating surface.

  Further, according to the casting apparatus 100 of the second embodiment, when removing the product 120 from the movable mold 104, the recess 114b formed in the distal end portion 114a of the passage forming section 114 slides with the passage forming section 114 of the movable mold 104. Since the burr formed on the mating surface with the slide portion 116 of the core 106 is removed, it is assumed that a continuous large burr is formed on the mating surface between the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106. But most of it can be removed. As a result, the burrs remaining on the mating surface between the passage forming portion 114 of the movable mold 104 and the slide portion 116 of the slide core 106 are relatively small, and thus burrs are caught in the bent passage 108 when removing the burrs. There is no. Furthermore, since the tip end portion 116a of the slide portion 116 of the slide core 106 is only formed to have a substantially triangular cross section, the manufacturability of the slide core 106 is improved.

  As mentioned above, although embodiment of this invention was described using the Example, this invention is not limited to such an Example, In the range which does not deviate from the summary of this invention, it can implement with a various form. Of course.

It is a schematic block diagram which shows the outline of a structure of the casting apparatus 1 which is one Example of this invention. It is process drawing which illustrates a mode that the product 20 is cast-formed using the casting apparatus 1 of an Example. FIG. 3 is a state diagram showing a state where molten metal 10 ′ is poured into a product cavity 10. It is a state figure showing the state where the slide core 6 was opened after molten metal 10 'solidified. It is a state figure showing the state where movable mold 4 was opened. FIG. 6 is a state diagram showing a state where a product 20 is taken out from the movable mold 4. It is a block diagram which shows the structure of the casting apparatus 1A of a modification. It is a block diagram which shows the structure of the casting apparatus 1B of a modification. It is a block diagram which shows the structure of 1C of casting apparatuses of a modification. It is a schematic block diagram which shows the outline of a structure of the casting apparatus 100 of 2nd Example.

Explanation of symbols

1, 1A, 1B, 100 Casting equipment 2, 102 Fixed mold 4, 4A, 4B, 104 Movable mold 6, 6A, 6B, 106 Slide core 8, 108 Bending path 10, 110 Product cavity 10 ', 110' Molten metal 12 Burr 14, 14A, 14B, 114 Passage forming part 14a, 14Aa, 14Ba, 114a Tip part 14b, 14Ab, 114b Recessed part 14Bb Step part 16, 16A, 16B, 116 Slide part 16a, 16Aa, 16Ba, 116a Tip part 16b, 16Ab Convex part 16Bb Step part 114b 'Front side wall surface

Claims (7)

A fixed mold, a first movable mold inserted and disposed in the fixed mold from a first direction, and a second direction intersecting the first direction so as to contact the first movable mold and inserted into the fixed mold A casting apparatus comprising: a second movable mold disposed; and a product cavity capable of forming a product having a bent passage with the fixed mold, the first movable mold, and the second movable mold. ,
The second movable mold is a casting apparatus in which a part of the second movable mold is brought into contact with the first movable mold in such a manner that a part of the second movable mold is fitted into the first movable mold.   2. The casting according to claim 1, wherein the first movable mold is formed with a recess at a portion where the second movable mold abuts, and the second movable mold is formed with a fitting portion fitted into the recess. apparatus. The concave portion has a rear side wall surface that forms a rear wall surface with respect to a drawing direction in which the first movable die is drawn from the fixed die.
The casting apparatus according to claim 2, wherein the rear side wall surface is formed on a surface substantially perpendicular to the drawing direction.   The casting apparatus according to claim 2 or 3, wherein a plurality of the concave portions and the fitting portions are formed.   5. The contact surface between the first movable mold and the second movable mold is formed so as to be substantially perpendicular to the flow direction of the molten metal flowing into the product cavity. Casting equipment. A casting method for forming a product having a bent passage,
(A) The first movable mold is inserted and arranged in the fixed mold from the first direction,
(B) A second movable mold is inserted and disposed in the fixed mold from a second direction intersecting the first direction so as to be in contact with the first movable mold in a manner in which a part thereof is fitted into the first movable mold. ,
(C) A casting method in which molten metal is poured into a product cavity formed by the fixed mold, the first movable mold, and the second movable mold. The casting method according to claim 1, wherein the step (b) is a step of fitting the fitting portion of the second movable mold into a recess formed in the first movable mold.

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