JP2001170750A - Casting mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casting mold in which casting can be performed without difficulties even when the position or shape, etc., of the portion cast with a slide core is changed. SOLUTION: The casting mold 10 is constituted by providing one pair of master molds 12, 22 which are openable/closable, one pair of inserts 17 (A), 45 (A) fixed to the respective pair of master molds and the slide core 38 (A) held by utilizing a supporting bracket 32 to the master mold 22 side by constituting the mold surface for casting with the inserts, and a plurality of kinds of cast products M1 can be cast by exchanging at least the slide core 38 (A). In the master mold 22 at the supporting side of the slide core, a bracket fixing part 24 fixing the supporting bracket 32 is continuously disposed so as to surround the periphery of the insert 45 (A) fixed to the master mold 22 at the supporting side of the slide core.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting mold which can easily cope with a design change of a casting such as die casting, and is particularly suitable for casting a prototype. Related to casting mold.

[0002]

2. Description of the Related Art Conventionally, for example, in a die casting mold used for die casting, when the shape of a cast product is determined, a block made of heat-resistant steel or the like is subjected to electric discharge machining or the like to obtain a predetermined shape. A casting mold was manufactured by forming a mold surface (see Japanese Patent Application Laid-Open No. 60-116420).

[0003] However, when a prototype is cast, not only a large change but a small change occurs in the casting mold. In each case, if a new casting mold is re-manufactured by using electric discharge machining or the like, materials, manufacturing costs, and man-hours accompanying the design change are significantly increased.

[0004] In particular, in the case of casting using a slide core, if the position or shape of a portion to be cast with the slide core is changed, not only the slide core but also the arrangement position thereof is changed. The arrangement structure of the slide core including the nest and the main mold must also be changed, which further increases the material, manufacturing cost, and man-hours accompanying the design change.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a casting die which can easily cope with a change in the position or shape of a portion to be cast with a slide core. With the goal.

[0006]

The casting mold according to the present invention comprises:
A pair of main molds to be opened and closed, a pair of nests respectively attached to the pair of main dies, and the nests form a casting mold surface and are held by using a support bracket on the one main mold side. And a slide core to be replaced, at least the slide core is replaced, a casting mold capable of casting a plurality of types of castings, the main mold on the side supporting the slide core, A bracket fixing portion capable of fixing a support bracket is provided continuously or intermittently so as to surround a periphery of the nest attached to the main die on a slide core supporting side.

In the case where a stopper for restricting the movement of the slide core at the time of closing the mold is formed on the main mold not supporting the slide core, the stopper is also provided on the non-support side of the slide core. It is desirable to arrange the main die on the slide core non-support side continuously or intermittently so as to surround the periphery of the nest attached to the main die.

Further, when a guide fixing portion capable of fixing a guide for guiding the closing of the slide core is provided on the main mold on the side supporting the slide core, the guide fixing portion also includes: It is preferable that the slide core is continuously or intermittently arranged so as to surround the insert inserted into the main mold on the slide core support side.

Further, it is preferable that the bracket fixing portion, the stopper, and the guide fixing portion are respectively arranged in an arc shape with reference to the center of the nest attached to the main mold.

[0010]

In the casting mold according to the present invention, when the design of the cast product is changed and the position or shape of the part to be cast by the slide core is changed, the slide core is changed and, if necessary, the insert is inserted. Also change.

However, in the casting mold according to the present invention, the bracket fixing portion capable of fixing the support bracket for supporting the slide core is continuously formed so as to surround the nest attached to the main mold on the slide core supporting side. Or, they are arranged intermittently. In other words, if the design of the slide core is changed with reference to the support bracket fixed to the bracket fixing portion, the support bracket and the fixing structure of the support bracket are not changed, and a predetermined position of the bracket fixing portion is used.
The support bracket can be arranged and fixed. And, since the bracket fixing portion is disposed so as to surround the nest attached to the main die on the slide core supporting side, the moving direction (sliding) of the slide core is dealt with.
The support bracket can be fixed at an appropriate position such that the stroke can be shortened.

Therefore, in the casting mold according to the present invention, even if the position or shape of the part to be cast with the slide core is changed and the slide core is replaced, the support bracket for supporting the slide core and the support bracket for supporting the slide core are provided. Since it is not necessary to change the fixing structure of the bracket, it is possible to easily cope with the casting. Therefore, in the present invention,
This is suitable for casting molds for prototypes that have many design changes.

When a stopper for restricting the movement of the slide core at the time of closing the mold is formed on the main mold on the side that does not support the slide core, like the bracket fixing portion, the stopper is connected to the non-support side of the slide core. If it is arranged continuously or intermittently on the main mold on the slide core non-support side so as to surround the periphery of the insert attached to the main mold, the following operation and effect can be obtained. it can.

That is, even if the position, shape, and the like of the part to be cast by the slide core are changed, if the design of the slide core is changed with reference to the stopper together with the support bracket fixed to the bracket fixing portion, the structure of the stopper can be changed. The slide core can be stopped at a predetermined position of the stopper without requiring separate changes. Furthermore, since the stopper is disposed so as to surround the nest attached to the main mold on the slide core non-support side, at an appropriate position such as facing in the direction to stop the slide core,
The slide core during casting can be stopped.

Further, when a guide fixing portion capable of fixing a guide for guiding the closing of the slide core is provided on the main mold on the side supporting the slide core, the guide fixing portion is
The following operations and effects can be obtained by arranging continuously or intermittently so as to surround the nest attached to the main die on the slide core supporting side.

That is, even if the position, shape, and the like of the part to be cast by the slide core are changed, the design of the slide core is changed based on the support bracket fixed to the bracket fixing part and the guide fixed to the guide fixing part. By doing so, it is not necessary to separately change the structure of the guide and the guide fixing portion, and the guide can be arranged and fixed at a predetermined position of the guide fixing portion. Since the guide fixing portion is provided so as to surround the nest attached to the main die on the slide core supporting side, the stroke is shortened in accordance with the moving (sliding) direction of the slide core. The guide can be fixed at an appropriate position such as possible.

Further, if the bracket fixing portion, the stopper, or the guide fixing portion is disposed in an arc shape with reference to the center of the nest attached to the main mold, respectively, the bracket fixing portion, the stopper, or the guide fixing portion is provided. Since the guide fixing portion is arranged at an equal distance from the center of the nest,
The design of the slide core can be changed on the basis of the center of the nesting, and work such as design in the moving direction and the stroke of the slide core or the direction in which the injection pressure is opposed becomes easy.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

The casting mold 10 of the embodiment shown in FIG.
As shown in FIG. 1, there is a trial die casting mold capable of casting two types of cast products M1 and M2 made of an aluminum alloy or the like. Each of the castings M1 and M2 has a rectangular parallelepiped box shape having a recess 1 on the upper surface. The casting M1 has a rectangular recess 2 formed on a lateral side surface S1. A circular concave portion 3 is formed on the side surface 2 of the light emitting device. Further, a rectangular recess 4 is formed on the upper end surface PU of the casting M2. These castings M1 and M2 are
3 is different in position and shape, and the casting M2
And the other dimensions and shapes are the same.

As shown in FIGS. 2 and 3, the casting mold 10 has a pair of main dies 12 and 22 that open and close in the left-right direction, and a pair of inserts 17A and 17A attached to the pair of main dies 12 and 22, respectively. 45A, and a slide core 38A which forms a casting mold surface with the inserts 17A and 45A and is held on one main mold 22 side by using the support bracket 32. In the case of the embodiment, the casting mold 10 is further provided with a core 47 attached to the insert 45A side. Further, in the case of the embodiment, the main mold 12 and the insert 17A are configured as the fixed side of the die casting machine, and the main mold 22 and the insert 45A are configured as the movable side of the die casting machine.

The main mold 12 on the fixed side has a substantially rectangular parallelepiped shape as shown in FIGS. 2 to 4, and is mounted and fixed on a mounting plate (not shown) on the fixed side of the die-casting machine. ) Is attached and fixed to the main mold 12. The main mold 12 has a storage recess 12a for storing the insert 17A. The storage recess 12a
Is formed in a shape capable of accommodating the insert 17B (see FIGS. 7 and 8) capable of casting the casting M2. In addition, main mold 1
2, a guide pin 13 for guiding the opening and closing of the casting mold 10 is fixed at a predetermined position. Further, an annular concave groove 14 is formed on the surface of the main die 12 on the side of the main die 22 so as to surround the insert 17A, and a portion of the inner peripheral surface of the concave groove 14 on the outer peripheral side during casting is formed. The stopper 15 stops the movement of the slide core 38A. The concave groove 14 forming the stopper 15 is formed in an arc shape around the center O of the insert 17A. The center O of the nest 17A is
It also coincides with the center O of the nest 45A.

The insert 17A has a substantially rectangular parallelepiped shape and is provided with a casting mold surface 17a capable of casting a casting M1. Further, the insert 17A is formed with a storage recess 17b that can store the slide core 38A near the casting mold surface 17a. The casting mold surface 17a of the insert 17A casts the bottom surface PB of the casting M1 and the side surfaces S2, S3, and S4 excluding the vicinity of the concave portion 2.

In the case of the embodiment, the main mold 12 and the nest 1
A sprue runner and a gate (not shown) are formed in 7A so that a molten casting material can be injected into the cavity 10a at the time of mold clamping.

As shown in FIGS. 2, 3, 5, and 6, the movable main mold 22 is attached and fixed to a die base 21 using bolts (not shown), and the die base 21 is movable in a die casting machine. It is mounted and fixed to a mounting plate (not shown) on the side. The insert 45A is attached and fixed to the main mold 22 using bolts (not shown). Main mold 22
Is formed with a storage recess 22a for storing the insert 45A. Further, a guide bush 23 into which the respective guide pins 13 can be inserted is provided in the main die 22, and each guide bush 23 is fixed to the die base 22 through the main die 22. The storage recess 22a is formed in a shape capable of storing the insert 45B (see FIGS. 7 and 8) that can cast the casting M2.

Further, the main mold 22 has a center O of the insert 45A.
Is formed in a substantially columnar shape centered on the
The groove 25 is formed along the entire circumference in the circumferential direction.
That is, each concave groove 25 is formed in an arc shape centering on the center O of the insert 45A. And each groove 25 is
The bracket fixing portion 24 that fixes the support bracket 32 that supports the slide core 38A is configured by using the mounting bolt 26 that is arranged in the concave groove 25. Each groove 25
A narrow portion 25a disposed on the outer peripheral surface side of the main mold 22,
And a wide portion 25b having an internal space larger than the narrow portion 25a.

The mounting bolt 26 is connected to the narrow portion 25a.
A head portion 26a having a larger outer diameter dimension and fitted into the wide portion 25b, and a shaft portion 26b protruding from the head portion 26a through the narrow portion 25a and threaded with a male screw. Have been. The mounting bolt 26 connects the head 26a to the wide portion 25 through an input port 25c (see FIG. 6) provided in the concave groove 25.
b, and is disposed on the main mold 22.

In the surface of the main die 22 on the side of the main die 12, three annular grooves 29 are formed so as to surround the insert 45A.
Are formed. These concave grooves 29 are formed in an arc shape around the center O of the insert 45A. Each groove 29 forms a guide fixing portion 28 for fixing a guide 35 for guiding the movement of the slide core 38A by using a mounting bolt 30 arranged in the groove 29. Each concave groove 29 is configured to include a narrow portion 29a disposed on the surface side of the main mold 22 and a wide portion 29b disposed on the inner side and having an inner space larger than the narrow portion 29a. I have.

The mounting bolt 30 is attached to the narrow portion 29a.
A head portion 30a having a larger outer diameter and fitted into the wide portion 29b, and a shaft portion 30b which is inserted through the narrow portion 29a and protrudes from the head portion 30a and is threaded with a male screw. Have been. The mounting bolt 30 moves the head 30a from the input port 29c (see FIG. 5) provided in the concave groove 29 to the wide portion 29.
b, and is disposed on the main mold 22.

The insert 45A has a substantially rectangular parallelepiped shape, and includes a casting mold surface 45a capable of casting a casting M1.
Further, a storage recess 45b for storing the core 47 is provided. The casting mold surface of the insert 45A is the upper end surface P of the casting M1.
U will be cast.

The core 47 has a substantially rectangular parallelepiped shape, is housed in the housing recess 45b, and is attached and fixed to the insert 45A by using a bolt (not shown). In addition, core 47
Is provided with a casting mold surface 47a capable of casting the concave portions 1 of the castings M1 and M2.

An ejector pin (not shown), which is held by the die base 21 and releases the cast product M1 when the mold is opened, is inserted through the main mold 22 and the insert 45A.

The slide core 38A is configured such that a casting mold surface 39A capable of casting the concave portion 2 of the casting M1 is disposed on the tip end side, and the slide core 38A is connected to the main molds 12 and 22 on the base side. Is connected to a slide core driving device 43 for moving in a direction orthogonal to the opening / closing direction of the slide core.
The casting mold surface 39A of the slide core 38A is a cast product M1.
The entire surface of the side surface S1 including the concave portion 2 is cast. The slide core driving device 43 includes a cylinder 43a that moves a piston rod 43b in and out using hydraulic pressure. The cylinder 43a includes a mounting base 43c that is connected and fixed to the support bracket 32 using bolts (illustration symbols are omitted).

The slide core 38A has a main mold 12
On the side surface, a stopper restricting portion 40A that is fitted into the concave groove 14 of the main mold 12 and that can contact the stopper 15 is provided in a protruding manner. Further, a guide sliding portion 41A for guiding the slide core 38A that is moved by the operation of the driving device 43 is protruded from the surface on the main mold 22 side.

The support bracket 32 includes a slide core 38.
A is movably held, and in the case of the embodiment, two sides are provided on both sides of the driving device 43 in the circumferential direction of the main mold 22.
Are arranged. Each support bracket 32 is provided on the main mold 22.
A base 32a disposed on the peripheral surface of the main mold 12 and 22 along the opening / closing direction of the main dies 12 and 22; and a flange 32c that bends toward the driving device 43 at the tip end of the base 32a and extends. Have been. The support brackets 32 arranged on both sides of the driving device 43 are formed symmetrically about the driving device 43. And the base 3 of each support bracket 32
2, two mounting holes 32b through which mounting bolts 26 extending from the respective concave grooves 25 of the bracket fixing portion 24 are inserted. Then, each support bracket 32 is fixedly attached to the main mold 22 by tightening a nut 33 to a shaft portion 26b of a mounting bolt 26 protruding from each mounting hole 32b. The mounting base 43c of the driving device 43 is mounted and fixed to the flange portion 32c of each support bracket 32 by using a bolt (omitted from the drawing).
Will movably support the slide core 38A.

The guide 35, which slides and guides the guide sliding portion 41A when the slide core 38A moves, is provided with a sliding portion 41A.
Are arranged symmetrically with respect to each other. Each guide 35 is formed in a substantially L-shaped cross section including a base 35a fixed to a surface of the main die 22 on the side of the main die 12 and a guide wall 35c extending from an end of the base 35a. (Refer to the two-dot chain line in FIG. 6), the opposing surface of each guide wall portion 35c corresponds to the sliding portion 41A, and
The guide sliding portion 4 is formed as a taper that opens outward toward the second side.
1A will be slid and guided. The base 35a of each guide 35 is formed with three mounting holes 35b through which mounting bolts 30 extending from each groove 29 of the guide fixing portion 28 are inserted. Then, each guide 35 is attached and fixed to the main mold 22 by tightening the nut 36 to the shaft portion 30b of the attachment bolt 30 protruding from each attachment hole 35b.

When casting the casting M1 with the casting mold 10 in which the inserts 17A, 45A, and the core 47 are arranged, first, the slide core driving device 43 is operated to move the piston rod of the cylinder 43a. 43b is extended, and the mold is closed with the slide core 45A arranged at a predetermined position. Then, the casting material is injected into the cavity 10a surrounded by the casting mold surfaces 17a, 45a, 39A, and 47a of the inserts 17A and 45A, the slide core 38, and the core 47 through a sprue runner and a gate (not shown). At this time,
The injection pressure acts on the casting mold surface 39A of the slide core 38A to move the slide core 38A in a direction to shrink the piston rod 43b, but the stopper regulating portion 40A of the slide core 38A And its movement is prevented.

After the casting material has solidified, the mold is opened. As shown in FIG.
The 5A, the slide core 38A, the core 47, and the main mold 22 are integrally separated from the fixed side insert 17A, the main mold 12. Next, the stopper restricting portion 40A of the slide core 38A.
However, when the slide core is separated from the stopper 15, the slide core driving device 43 is operated, the cylinder 43a contracts the piston rod 43b, and the slide core 38A separates the casting mold surface 39A from the concave portion 2 of the casting M1. At the same time, the main die 22 and the insert 45A are held by the die base 21.
The ejector pin (not shown) that has penetrated the mold M1 projects with the opening of the mold, and releases the casting M1.

Next, using the casting mold 10, the casting M
2 is cast, as shown in FIGS.
Insert 7A / 45A / slide core 38A into 17B / 45
B. Replace with the slide core 38B.

The insert 17B has a casting mold surface 17a capable of casting the bottom surface PB and the side surfaces S1, S3, S4 of the casting M2 and the side surface S excluding the vicinity of the concave portion 3. In addition, nesting 17
B has a housing recess 17b for housing a slide core 38B for casting the vicinity of the recess 3 of the casting M2.
A is arranged at a position shifted by 90 ° from the arrangement position of the storage recess 17b in FIG.

The insert 45B is provided with a casting mold surface 45a capable of casting the upper end face PB having the concave portion 4 of the casting M2.

A runner (not shown) is arranged in the insert 17B at the same position as the insert 17A so that the molten casting material from the main mold 12 can be guided into the closed cavity 10b. Have been. Of course, the position of the gate
Since the nest 17B itself is replaced, it may be changed.

Further, similarly to the insert 45A, an insertion hole (not shown) for an ejector pin is provided in the insert 45B.

The slide core 38B has a predetermined casting mold surface 39B so that the concave portion 3 can be formed on the longitudinal side surface S2 of the casting M2.
The slide core 38A is arranged at a position shifted by 90 ° from the arrangement position.

The casting core surface 39B of the slide core 38B is designed on the basis of the support brackets 32 fixed to the bracket fixing portion 24. That is, in the case of the embodiment, the casting mold surface 39B is
And a nest 17A
Since it is necessary to form the concave portion 3 on the side surface S2 in the longitudinal direction of the casting M2 so as to approach the center O of 17B / 45A / 45B, the portion connected to the piston rod 43b of the slide core driving device 43 is required. The distance to the mold surface 39B is also set to be longer than the slide core 38A. The same support brackets 32 and 32 and the slide core driving device 43 as those used when the casting M1 is cast are used.

The stopper restricting portion 40B of the slide core 38B also has a concave portion in a direction orthogonal to the casting material injection pressure at that position corresponding to the position of the slide core 38B shifted by 90 ° from the slide core 38A. The inner peripheral surface of the groove 14 is set so as to be able to contact the outer peripheral side stopper 15. That is, in the case of the embodiment, the stopper regulating portion 40B is provided with the mold surface 39 at the tip of the slide core 38B.
The distance from B is longer than the distance from the mold surface 39A of the slide core 38A to the stopper regulating portion 40A. The shape of the stopper regulating portion 40B itself is the same as that of the stopper regulating portion 40A.

Further, the guide sliding portion 41B of the slide core 38B is also fixed to the guide fixing portion 28 by the guide 3.
It is designed based on 5.35. That is, the guide sliding portion 41B of the embodiment is arranged such that the distance from the mold surface 39B at the tip of the slide core 38B is longer than the distance from the mold surface 39A of the slide core 38A to the guide sliding portion 41A. Have been. The shape of the guide sliding portion 41B itself is the same as that of the guide sliding portion 41A.

When replacing the slide core 38A with the slide core 38B, first, the slide core 38A and the piston rod 43b are disconnected from each other by opening the mold, and the slide core 38A is moved from the main mold 22 side. Remove. Next, the nuts 36 tightened to the mounting bolts 30 are loosened, and the heads 30a are housed in the wide portions 29b, and the bolts 30 are slid in the concave grooves 29 to shift the guides 35, 35. To place it in place. Thereafter, each nut 36 is tightened, and each guide 35
-Fix 35 to the main mold 22. And each mounting bolt 2
6, the bolts 26 are slid in the grooves 25 with the head 26a housed in the wide portion 25b, and the support brackets 32, 32 together with the slide core driving device 43. Is shifted and arranged at a predetermined position. After that, the nuts 33 are tightened to fix the support brackets 32 to the main mold 22. And Guide 3
The guide slide portion 41B is fitted between the slide cores 5 and 35, and the slide core 38B is connected to the piston rod 43b of the slide core driving device 43, so that the replacement operation of the slide core 38B can be completed. The support bracket 32
When the slide core drive device 43 is in the way when the slide device 32 is shifted, the support bracket 32
3 may be removed. In this case, the slide core 38B is fitted between the guides 35 in advance, and the slide core 38B and the piston rod 43
b and the support brackets 32
Alternatively, the mounting base 43c of the driving device 43 may be fixed.

The inserts 17B and 45B can be replaced by removing and tightening predetermined bolts (not shown).

Then, when casting is performed in the same manner as the casting M1 using the casting mold 10 replaced with the inserts 17B, 45B and the slide core 38B, the casting M2 can be manufactured.

As described above, in the casting mold 10 of the embodiment, the bracket fixing portion 24 capable of fixing the support brackets 32 for supporting the slide core has the insert 45A attached to the main mold 22 on the slide core supporting side. -Annular grooves 25 are provided so as to surround the periphery of 45B, and are continuously arranged. Therefore, even if the product to be cast is changed from the cast product M1 to the cast product M2, the support brackets 32 are fixed to the bracket fixing portion 24.
When the design is changed from the slide core 38A to the bracket 38B based on the above, the support bracket 32 is arranged and fixed at a predetermined position of the bracket fixing portion 24 without changing the support bracket 32 and the fixing structure of the support bracket 32. it can. In addition, the bracket fixing portion 24 has an insert 45A
Because it is arranged to surround the periphery of 45B,
At an appropriate position such that the stroke can be shortened according to the sliding direction of the slide core 38B, the support bracket 3
2 can be fixed.

Therefore, in the casting mold 10 of the embodiment,
Even if the position or shape of the part to be cast with the slide core is changed, only the inserts 17 (A / B) / 45 (A / B) and the slide core 38 (A / B) are changed. It is not necessary to change the support bracket 32 that supports the support bracket and the fixing structure of the support bracket 32, so that casting can be easily performed. Therefore, in the casting mold 10 of the embodiment, the prototypes M1 and M2 with many design changes are provided.
This is suitable for casting.

In the embodiment, the stopper 15 for restricting the movement of the slide core 38 (A / B) when closing the mold is provided.
Similarly to the bracket fixing portion 24, the inserts 17 (A and B) attached to the main die 12 on the non-support side of the slide core 38.
Of the main mold 12 on the side not supporting the slide core so as to surround
Are provided continuously with an annular concave groove 14.

Therefore, even if the position, shape, and the like of the part to be cast by the slide cores 38A and 38B are changed, the slide core 3 is fixed to the stopper 15 together with the support brackets 32 fixed to the bracket fixing portion 24.
By changing the design of the stopper regulating portions 40 (A and B) of 8 (A and B), there is no need to separately change the structure of the stopper 15, and the slide core 38 A is fixed at a predetermined position of the stopper 15.
38B can be stopped. Further, since the stopper 15 is provided so as to surround the inserts 17A and 17B attached to the main die 12 on the slide core non-support side, the stopper 15 is opposed to the direction in which the slide cores 38A and 38B are stopped. The slide cores 38A and 38B at the time of casting can be stopped at an appropriate position such as the above.

Further, in the embodiment, the slide core 38
A guide fixing portion 28 capable of fixing guides 35 for guiding the mold closing of (A, B) surrounds the periphery of the insert 45 (A, B) attached to the main mold 22 on the slide core supporting side. , Are arranged continuously.

Therefore, even if the position, shape, etc. of the part to be cast by the slide cores 38A, 38B are changed, the guide 35, which is fixed to the guide fixing part 28, together with the support brackets 32, which are fixed to the bracket fixing part 24. 3
By changing the design of the slide cores 38 (A and B) based on the reference 5, there is no need to separately change the structures of the guides 35 and the guide fixing portions 28. Can be arranged and fixed. Since the guide fixing portion 28 is disposed so as to surround the insert 45 (A / B) attached to the main die 22 on the slide core support side, the sliding direction of the slide cores 38A / 38B is provided. Therefore, the guides 35 can be fixed at an appropriate position such that the stroke can be shortened.

Further, in the embodiment, the bracket fixing portion 24, the stopper 15, and the guide fixing portion 28
Are nested 1 attached to the main molds 12 and 22, respectively.
7 (A, B) and 45 (A, B) are arranged in an arc shape with reference to the center O. Therefore, the bracket fixing portion 24
The stopper 15 and the guide fixing portion 28 are inserted into the insert 17 (A
B) Since they are arranged equidistant from the center O of 45 (AB), the design of the slide core 38 (AB) can be changed based on the center O of the nest, Work such as design in the moving direction and stroke of the slide core or the direction in which the injection pressure is opposed becomes easy.

If the above operation and effect are not taken into consideration, the bracket fixing portion 24, the stopper 15, and the guide fixing portion 28 may be inserted into the inserts 17 (A and B) of the main dies 12 and 22.
・ Polygonal shape such as rectangular shape around 45 (A ・ B),
Alternatively, they may be arranged in an elliptical shape.

However, as in the embodiment, the bracket fixing portion 24 and the guide fixing portion 28 are not provided with the inserts 17 (AB).
In the case of arranging them in an arc based on the center O of 45 (A · B), the support brackets 32 fixed by the bracket fixing part 24 and the guide 3 fixed by the guide fixing part 28
With the use of 5.35, the moving direction of the slide core 38 (A / B) can be easily directed to the center O, and the stopper 15 is also based on the center O of the inserts 17 (AB) / 45 (AB). Arranging in an arc shape makes it easy to stop the slide cores 38 (A and B) in a direction orthogonal to the injection pressure during casting.
Advantages such as a sufficient strength of the slide core 38 (A / B), a short moving stroke of the slide core 38 (A / B), and the use of a small cylinder 43a can be obtained.

Further, the bracket fixing portion 24, the stopper 1
5 and the guide fixing portion 28 may be arranged not continuously but intermittently around the inserts (A, B) and 45 (A, B) in the main molds 12, 22. good.

For example, in the bracket fixing portion 24, a number of screw holes are provided around the inserts 45 (A and B) of the main die 22 to constitute the bracket fixing portion 24, and the support bracket 3
The support brackets 32 may be fixed by screwing bolts into predetermined screw holes via the respective mounting holes 32b.

Similarly, as the stopper 15, the concave groove 14
Instead, a recess in which the stopper regulating portion 40 (A / B) can be fitted may be provided intermittently around the insert 17 (A / B) of the main die 12.

Further, as the guide fixing portion 28, a number of screw holes are provided around the inserts 45 (A and B) of the main die 22 to constitute the bracket fixing portion 28, and the guides 35.3 are formed.
The guides 35 may be fixed by screwing bolts into predetermined screw holes through the mounting holes 35b of No. 5.

However, as in the embodiment, the bracket fixing portion 24 and the guide fixing portion 28 are formed so that the mounting bolts 26 and 30 can be slidably displaced so that the heads 26a and 30a cannot be removed. With the configuration of 25 and 29, the predetermined nuts 33 and 36 are loosened, and the support brackets 32 and the guides 35 and 35 are easily displaced and fixed at predetermined positions without being removed from the main mold 22. This is convenient for replacing the slide cores 38 (A and B).

The bracket fixing portion 24 and the stopper 1
5. The guide fixing portion 28 has a nest 17 (A, B)
The present invention is not limited to the embodiment as long as it is around (A, B), and may be arranged on the mutually facing surfaces or the outer peripheral surfaces of the predetermined main molds 22 and 12.

Further, the stopper 15 can be inserted into the slide core 38 (A / B) side without providing the recessed groove 14 in the main mold 12 as in the embodiment.
From the slide core 38 (A ·
On the B) side, a recessed stopper regulating portion 40 for accommodating the stopper 15 may be provided.

Furthermore, in the embodiment, the casting mold 10 using one slide core 38A / 38B has been described. However, a casting may be cast using a plurality of slide cores.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a casting to be cast by a casting mold according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the casting mold of the embodiment at the time of casting, and corresponds to a II-II portion in FIGS.

FIG. 3 is a cross-sectional view showing the casting mold of the embodiment when the mold is opened, and corresponds to a III-III portion in FIGS.

FIG. 4 is a view showing a fixed side of the casting mold of the embodiment;
FIG. 4 is a diagram viewed from an IV direction in FIG. 3.

FIG. 5 is a view showing a movable side of the casting mold of the embodiment;
FIG. 5 is a diagram viewed from a direction V in FIG. 3.

FIG. 6 is a front view showing a movable side of the casting mold of the embodiment.

FIG. 7 is a cross-sectional view showing the casting mold of the same embodiment at the time of casting a redesigned casting.

FIG. 8 is a view showing a fixed side of a casting mold when the casting is cast.

FIG. 9 is a view showing a movable side of a casting mold when the casting is cast.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Casting mold, 12/22 ... Main mold, 15 ... Stopper, 17A / 17B / 45A / 45B ... Nest, 17a / 39A / 39B / 45a / 47a ... Casting mold surface, 24 ... Bracket fixing part, 28 ... Guide fixing portion, 32: support bracket, 35: guide, 38A / 38B: slide core, O: (nested) center, M1, M2: cast product.

Continuing from the front page (72) Inventor Masataka Kaji 132, Mukaihara, Nishinakayama, Fujioka-cho, Nishikamo-gun, Aichi Prefecture Within Daito Kogyo Co., Ltd. (72) Inventor Yasuo Imai 1-Toyota-cho, Toyota-shi, Aichi Prefecture Toyota Automobile Stock Within the company (72) Inventor Ikuo Suzuki 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation

Claims (6)

[Claims] 1. A pair of main molds to be opened and closed, a pair of nests respectively attached to the pair of main dies, and the nests constitute a casting mold surface, and a support bracket is provided on the one main mold side. A slide core that is held by utilizing a slide die, wherein at least the slide core is replaced, and a casting mold capable of casting a plurality of types of castings, A bracket fixing portion capable of fixing the support bracket is continuously or intermittently provided on the main mold so as to surround a periphery of the nest attached to the main mold on the slide core supporting side. A casting mold. 2. The bracket according to claim 1, wherein the bracket fixing portion is arranged in an arc shape with reference to a center of the nest attached to the main mold on a slide core supporting side. Casting mold. 3. The main mold on the side that does not support the slide core is provided with a stopper for restricting the movement of the slide core when the mold is closed, and the stopper is provided on the main mold on the non-support side of the slide core. 3. The slide die non-supporting side main die is continuously or intermittently disposed so as to surround the periphery of the attached insert. Casting mold. 4. The stopper according to claim 1, wherein a center of the nest attached to the main mold on a slide core non-support side is set as a reference.
The casting mold according to claim 3, wherein the casting mold is arranged in an arc shape. 5. A guide fixing portion capable of fixing a guide for guiding the closing of the slide core is provided on the main mold on a side supporting the slide core, and the guide fixing portion is provided on a slide core supporting side. The casting mold according to any one of claims 1 to 4, wherein the casting mold is disposed continuously or intermittently so as to surround the nest attached to the main mold. 6. The guide fixing portion according to claim 5, wherein the guide fixing portion is arranged in an arc shape with reference to the center of the insert inserted into the main mold on the slide core supporting side.
The casting mold described in the above.