JPH07308748A - Casting die device - Google Patents

Abstract

PURPOSE:To obtain a casting die device, in which even in the case of providing a pressurizing means for filling material in a cavity, an ejection pin is unnecessary to be made the long length and the degree-of freedom of the setting place can be held. CONSTITUTION:Pin plate 8 for fixing the ejection pins 10 are fixed so as to be apart from a C plate 7 through C plate connecting rods 14 and C plate connecting plates 13. A supporting plate 16 supported with a supporting column 17 extended from a movable die 1 is positioned in a space between the pin plates 8 and the C plate connecting plates 13 and a pressurizing cylinder 15 is fixed to the supporting plate. The pressurizing cylinder 15 drives a pressurizing pin 18 so as to be possible to advance/retreat in a movable die cavity 2'. As the pressurizing cylinder 15 is positioned in the space, too, the pin plate can be arranged so as to face to the movable die and mechanical interference between the ejection pins and the pressurizing cylinder can do as out of consideration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting mold apparatus, and more particularly to a casting mold apparatus provided with a partial pressurizing means for partially pressurizing a filling material in a die cavity or a partial extruding means for partially extruding the filling material. The present invention relates to a casting mold device.

[0002]

2. Description of the Related Art A conventional casting mold apparatus shown in FIG.
A movable die 1 including a movable die 2 having a cavity 2'formed therein and a movable die holder 3 for fixing the movable die 2 therein.
Is configured. The movable mold 1 is fixed to the die pace 5 on the movable platen 6 via the spacer 4. By the movement of the movable platen 6, the movable mold 1 comes into contact with and separates from a fixed mold (not shown), and the mold opening / closing operation is performed.

The solidified molten metal in the cavity 2'is moved to the movable mold 1
In order to remove it from the mold, there are provided push-out pins 10 and 10 penetrating the movable mold 1 and one end of which can be projected and retracted with respect to the cavity 2 ′. The other ends of the push pins 10 and 10 are pin plates 8
The pin plate 8 is fixed to the C plate 7 of the casting machine by the stepped pin 11. The ejector rods 12 are fixed to the four corners of the C plate 7, and the push-out pins 10 and 10 can reciprocate by the operation of the ejector rods 12. The pin plate 8 and the C plate 7 are movably positioned in the space between the movable mold 1 and the die base 5.

Partial pressurizing means are provided to partially pressurize the filling when the molten metal filled in the cavity 2'is in a semi-solidified state. The partial pressurizing means has a pressurizing pin 18 and a pressurizing cylinder 15, and one end of the pressurizing pin 18 is provided so as to be retractable from the cavity 2 '. The other end of the pressure pin 18 is connected to the piston 15 a of the pressure cylinder 15. The pressurizing cylinder 15 is a support plate 16 supported by columns 17 fixed to the movable mold 1.
It is fixed to. With this configuration, the ejector rod 1
Regardless of the operation of No. 2, the pressurizing cylinder 15 is operated so that the pressurizing pin 18 can be pushed into the semi-solidified molten metal to partially pressurize the molten metal.

FIG. 5 shows another conventional casting mold apparatus, and the same numbers as in FIG. 4 mean the same members. In this conventional apparatus, the die-casting pin 9 is detachably provided on the movable die 2, so that a screw hole or a bolt hole can be formed in the cast product. Even if the movable die 2 itself is machined so as to have a protrusion, a similar hole can be formed in the cast product, but if seizure or galling occurs on the protrusion, the movable die 2 itself must be replaced. It is extremely uneconomical. Therefore, by providing the casting pin 9 as a separate body, it is possible to avoid the complexity of the die processing and to replace only the casting pin even if seizure or the like occurs.

After the molten metal is solidified, one of the extruding pins 10 is provided in the vicinity of the casting pin 9 so that the solidified molten metal around the casting pin 9 can be easily separated from the casting pin 9. There is.

[0007]

In the conventional casting mold apparatus shown in FIG. 4, since the pressure cylinder 15 is installed in the space between the movable holder 3 and the pin plate 8,
The installation place of the push-out pin 10 is restricted.
That is, since the push-out pin 10 extends from the pin plate 8,
Since it cannot be provided at a location where it interferes with the pressurizing cylinder 15, there is a drawback in that the degree of freedom in installing the extrusion pin 10 is reduced.

Further, since the pressurizing cylinder 15 is arranged in the space between the pin plate 8 and the movable holder 3, it is necessary to increase the distance between the pin plate 8 and the movable holder 3, and the push pin 10 is inevitably inevitable. Becomes longer. Therefore, the possibility of bending or breaking of the push pin 10 increases. Such a drawback is the same when the pressure cylinder 15 is directly fixed to the movable holder 3.

Further, in the conventional casting mold apparatus shown in FIG. 5, there is a case where the casting pin 9 is hugged (the molten metal is solidified so as to surround the casting pin) depending on the shape of the product, or the pushing force of the pushing pin 10 is applied. If it is insufficient, it becomes difficult to separate the cast product from the casting pin 9. In particular, due to the positional relationship between the solidified melt around the casting pin 9 and the extrusion pin 10, it is impossible for the extrusion pin 10 to extrude the solidified melt parallel to the axial direction of the casting pin 9.

If the pressurizing pin of the partial pressurizing means as shown in FIG. 4 is arranged around the casting pin 9, the problem of extruding the solidified molten metal around the casting pin 9 is improved. The above-mentioned problem newly arises due to the installation location of the pressure cylinder.

Therefore, the present invention provides a casting mold apparatus provided with a partial pressurizing means or a partial extruding means, which does not need to lengthen the extruding pin and can reduce restrictions on the installation place of the extruding pin. With the goal.

[0012]

In order to achieve the above object, a first invention relating to the present application is a movable die, a die base connected to the movable die via a spacer, the movable die and the die base. A C plate movably provided in the space between the die bases, an ejector rod connected to the C plate for reciprocating the C plate, and a C plate in the space between the movable mold and the die base. A connected pin plate and an extruding pin that is provided so as to penetrate through the movable mold and is fixed to the pin plate and capable of appearing and retracting with respect to the filling in the movable mold cavity by the reciprocating motion of the ejector rod. In the casting mold apparatus, the C plate and the pin plate are separated from each other and fixed to each other, and the support plate fixed to the movable mold is immovably positioned in the space between the C plate and the pin plate. , The support plate has Partially pressurizing portion pressurizing means Hamabutsu provides a casting mold device which is provided with.

Here, the partial pressurizing means includes a pressurizing cylinder attached to one surface of the support plate, and the pressurizing cylinder penetrating the movable mold located on the other surface side of the support plate. It is constituted by a partial pressure pin which partially pressurizes the filling in the cavity by the operation of the cylinder. A C-plate connecting plate is directly fixed to the C-plate, the C-plate connecting plate is fixed to the pin plate by a C-plate connecting rod, and the supporting plate is connected to the pin plate and the C-plate. It is preferably located in the space between the plates. Alternatively, it is preferable that the pin plate is directly fixed to the C plate via a stepping pin, and that the pin plate is provided with a backward limit stopper capable of contacting the surface of the C plate.

A second invention according to the present application is a movable die, a die base connected to the movable die via a spacer,
A C plate movably provided in a space between the movable mold and the die base, an ejector rod connected to the C plate for reciprocating the C plate, and a space between the movable mold and the die base. A pin plate connected to the C plate in the space and a penetrating member provided in the movable mold, fixed to the pin plate, and reciprocatingly operated by the ejector rod with respect to the filling material in the movable mold cavity; In a casting mold device having a push-out pin capable of projecting and retracting, the C plate and the pin plate are fixed apart from each other, and a support plate fixed to the movable mold in a space between the C plate and the pin plate. Is immovably positioned, a casting pin projecting into the cavity is fixed to the support plate through the pin plate, and is used to push out a filler around the casting pin in the cavity. , The pin plate is located on the outer peripheral side of the cast pin Is retractable part pushing means within the cavity provides a casting mold device which is secured by the movement of the pin plate.

[0015]

In the casting mold apparatus according to the first aspect of the present invention having the above-mentioned structure, the movable mold moves in the direction of the fixed mold (not shown) by the movement of the die pace to perform mold clamping, and the cavity is filled with the molten metal. While the molten metal is in the semi-solidified state, the partial pressurizing means operates to perform partial pressurization. After the molten metal is solidified, the mold is opened, and when the C plate is moved forward, the pin plate fixed to it is also moved forward at the same time, and the casting product is extruded by the extrusion pin. Since the support plate supporting the partial pressurizing means is located in the space between the pin plate and the C plate, it is not necessary to lengthen the extrusion pin even if the partial pressurizing means is provided, and the extrusion pin can be installed freely. The degree can be maintained.

The partial pressurizing means includes a pressurizing cylinder attached to one surface of the support plate and a pressurizing cylinder located on the other surface of the support plate and penetrating the movable mold to operate the pressurizing cylinder. When the pressure cylinder is located between the pin plate and the C plate when it is constituted by the partial pressure pin that partially pressurizes the filling in the cavity, it is not necessary to elongate the extrusion pin and The degree of freedom of installation can be maintained.

Further, the C plate connecting plate is directly fixed to the C plate,
In the case where the plate connecting plate is fixed to the pin plate with a distance from the pin plate through the C plate connecting rod, and the supporting plate is located in the space between the pin plate and the C plate connecting plate. Since the pressurizing cylinder is located in the space between the C-plate connecting plate and the pin plate, the same effect as described above can be obtained. Further, by providing the C plate connecting plate, it is possible to prevent the C plate itself from being damaged.

When the pin plate is directly fixed to the C plate via the stepping pin, the C plate connecting plate becomes unnecessary and the base can be secured even when the space between the pin plate and the C plate is narrow. That is, the space can be widened by the thickness of the C-plate connecting plate. Further, by providing a backward limit stopper, the C plate can be protected.

Further, in the casting die apparatus according to the second aspect of the present invention having the above-mentioned structure, the molten metal around the casting pin is solidified into a concave shape according to the outer shape of the casting pin, and after the mold is opened, the C plate is moved forward. The fixed pin board also moves forward at the same time,
The cast product is extruded by the extruding pin and the partial extruding means. The provision of the casting pin causes the solidified molten metal to cling to the casting pin depending on the shape of the product, but the provision of the partial extrusion means allows the cast product to be reliably extruded. Further, the support plate that supports the cast pin is located in the space between the pin plate and the C plate, and it is not necessary to increase the length of the push pin as in the first aspect of the invention, and the installation location is free. The degree can be maintained.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A casting mold apparatus according to a first embodiment of the present invention will be described with reference to FIG. In the casting mold apparatus, a movable mold 1 is composed of a movable die 2 having a cavity 2'formed therein and a movable die holder 3 for fixing the movable die 2. The movable die 2 and the movable holder 3 are fixed by a socket screw (not shown). The movable mold 1 is fixed to the die pace 5 on the movable platen 6 via the spacer 4. By moving the movable platen 6,
The movable mold 1 is brought into and out of contact with a fixed mold (not shown), and the mold opening / closing operation is performed.

In order to extrude the cast product solidified in the cavity 2'to an arbitrary place, there are provided push-out pins 10 and 10 penetrating the movable mold 1 and having one end protruding and retracting with respect to the cavity 2 '. . The other ends of the push-out pins 10 and 10 are fixed to the pin plate 8, and the pin plate 8 is fixed to the C plate connecting plate 13 via a plurality of C plate connecting rods 14 using a socket screw (not shown). And the C plate connecting plate 13 is the C plate 7
It is fixed to. Specifically, the stepped pin 11 having steps for connection is arranged at four places from the C plate connection plate 13.
The stepped pin 11 is inserted into the boss fitting hole 7 a of the C plate 7, and the C plate connecting plate 13 is set on the C plate 7. The ejector rods 12 are fixed to the four corners of the C plate 7, and the ejector pins 12 can be reciprocated by the operation of the ejector rods 12. Therefore, in the space between the movable holder 3 and the die base 5, first, the pin plate 8 is located facing the movable holder 3, and then the C plate connecting plate 13 is spaced apart from the pin plate 8 and is located.
Next, the C plate 7 is positioned so as to face the die base 5.

The C plate connecting plate 13 includes the pin plate 8 and the C plate 7.
It is provided to connect with. That is, the C plate 7 is originally a part of the casting machine main body device, and the size of the C plate 7 is preset, so that it cannot be changed. Therefore, the C plate 7 and the pin plate 8 can be separated and connected by interposing the C plate connecting plate 13. If the pin plate 8 is C
If the plate 7 is directly connected to the plate 7 with a connecting rod in a remote manner, the C plate may be damaged, and the damage of the C plate impairs the maintenance of the entire casting machine. Therefore, the cost is reduced by interposing the C-plate connecting plate 13 and using it as a spare.

Partial pressurizing means are provided to partially pressurize the filling when the molten metal filled in the cavity 2'is in a semi-solidified state. The partial pressurizing means has a pressurizing pin 18 and a pressurizing cylinder 15, and one end of the pressurizing pin 18 is provided so as to be retractable from the cavity 2 '. The other end of the pressurizing pin 18 is formed with a male screw and is screwed and connected to a female screw formed on the piston 15 a of the pressurizing cylinder 15. The pressurizing cylinder 15 is a pillar 17 fixed to the movable mold 1 by a socket screw (not shown),
It is fixed to a support plate 16 supported by 17. Prop 1
Reference numerals 7 and 17 extend through the pin plate 8 to position the support plate 16 in the space between the pin plate 8 and the C-plate connecting plate 13.

The operation of the casting mold apparatus according to the first embodiment will be described. Movable mold 1 by moving movable platen 6
Is moved toward a fixed mold (not shown) to perform mold clamping, and the cavity 2'is filled with the molten metal. While the molten metal is in the semi-solidified state, the pressurizing cylinder 15 operates to advance the pressurizing pin 18 into the cavity 2'and perform partial pressurization. After a lapse of a certain period of time, the pressurizing cylinder 15 is operated again, and the pressurizing pin 8 is retracted.

After the molten metal is solidified, the mold is opened and the cast product is extruded. That is, when the ejector rod 12 is operated to move the C plate 7 forward, the pin plate 8 fixed to the C plate 7 also moves forward at the same time, and the extrusion pin 10 extrudes the cast product. After taking out the cast product, the C plate 7 is pulled back, the mold is cleaned and the release agent is applied, and the mold is clamped, and the next casting is performed.

According to the configuration of the first embodiment, the pressurizing cylinder 15 need not be provided between the pin plate 8 and the movable holder 3, so that it is not necessary to lengthen the push-out pin 10. Further, the push pin 10 can be freely installed in a place other than the support cylinder 17 for mounting the pressurizing cylinder, and it is not necessary to consider mechanical interference with the pressurizing cylinder 15. Therefore, it is possible to increase the degree of freedom in installing the extrusion pin.

Next, a casting mold apparatus according to the second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the C-plate connecting plate 13 and the C-plate connecting rod 14 in the first embodiment are omitted. That is, the stepped pin 11 is extended, and the stepped pin 11 separates the pin plate 8 and the C plate from each other.
As described in the first embodiment, the boss fitting hole 7a is formed at a predetermined position of the C plate 7, and the four stepped pins 11 (only one is shown in FIG. 4) are the C plate 7 It is attached to the boss by. A pressurizing cylinder 15 is fixed in the space between the pin plate 8 and the C plate 7.

A backward limit stopper 21 is fixed to the pin plate 8 and is provided so as to be able to contact the surface of the C plate 7. The backward limit stopper 21 is provided to evenly transmit the pushing pressure from the ejector rod 12 to the C plate 7. Further, the pin plate 8 retreats due to the retreat of the ejector rod 12, but when the ejector rod 12 stops retreating, the pin plate 8 still retreats due to inertial force and is transmitted to the C plate via the stepped pin 11 and the boss fit. The stepped portion of the dowel 7a may be damaged, but such a damage can be prevented by the retreat limit stopper 21 contacting the surface of the C plate 7.
A plurality of retreat limit stoppers 21 are provided to reduce the possibility of damage to the C plate 7.

The casting mold apparatus according to the second embodiment has the same effect as that of the first embodiment. That is, since it is not necessary to provide the pressure cylinder 15 between the pin plate 8 and the movable holder 3,
It is not necessary to lengthen the push-out pin 10, and the push-out pin 10 can be freely installed in any place other than the column 17 for mounting the pressurizing cylinder, and it is necessary to consider mechanical interference with the pressurizing cylinder 15. Disappear. Therefore, it is possible to increase the degree of freedom in installing the extrusion pin. Further, since the stepped pin 11 is directly fixed to the pin plate 8, the C plate connecting plate becomes unnecessary, and even when the distance between the pin plate 8 and the C plate 7 cannot be set large, only the thickness of the C plate connecting plate is required. There is an advantage that a large space can be secured. The second embodiment is effective when only the pin plate 8 is present on the axial direction of the boss fitting hole 7a formed in the C plate 7 and no other mechanical component is present. . For example, this is a case where the support plate 16 and the pressurizing cylinder 15 of the first embodiment do not exist on the axis of the stepped pin 11.

A casting mold apparatus according to the third embodiment of the present invention will be described with reference to FIG. The third embodiment is substantially the same as the first embodiment, except that a casting pin 19 is used instead of the pressure pin 18 of the first embodiment. That is, the C-plate connecting plate 13 and the pin plate 8 are separated from each other and fixed to each other by the C-plate connecting rod 14, and the space between the C-plate connecting plate 13 and the pin plate 8 has a socket screw not shown in the movable mold 1. The support plate 16 fixed at is immovable. On the support plate 16, a cast pin 19 which penetrates the pin plate 8 and projects into the cavity 2'is fixed by a socket screw (not shown). Further, in order to extrude the filler around the casting pin 19 in the cavity 2 ', the pin plate 8 is provided with a sleeve-shaped extruding pin 20 as a partial extruding means. The sleeve-shaped extruding pin 20 is concentrically located on the outer peripheral side of the cast pin, and the stepped portion 20 is provided at the rear of the sleeve-shaped extruding pin 20.
a is provided, and it is fixed by being fitted into a pin plate 8 in which a hole having the same shape as that is machined. By the movement of the pin plate 8, the sleeve-shaped push-out pin 20 can be retracted into and out of the cavity 2 ′, and is provided so as to be movable around the cast pin 19.

Explaining the operation of the third embodiment, mold clamping and molten metal injection are performed as in the first embodiment. Therefore, the molten metal around the casting pin is solidified into a concave shape according to the outer shape of the casting pin 19. Next, the mold is opened and the cast product is extruded. By advancing the C plate 7, the pin plate 8 fixed thereto is also advanced at the same time, and the extruded pin 10 and the sleeve-shaped extruded pin 20 extrude the cast product. After the cast product is taken out, the C plate 7 is pulled back, cleaned, the release agent is applied, and the mold is clamped.

Also in the third embodiment, since the support plate 16 is located in the space between the pin plate 8 and the C plate connecting plate 13, the pin plate 8 can be located close to the movable holder 3 and the pushing pin It is not necessary to increase the length of 10. Further, there are few restrictions on the installation position of the push-out pin 10. Furthermore, the cast pin 19
Is fixed to the support plate 16, and the sleeve-shaped push-out pin 20 is movably provided around the support plate 16, so that the cast product can be easily separated from the cast-out pin 19 even if the molten metal is clogged. .

The present invention is not limited to the above-mentioned embodiments, and various improvements and modifications can be made within the scope of the claims. For example, in the second embodiment, C
If the surface pressure acting on the plate is low, the retreat limit stopper 21 may not be provided.

[0034]

According to the casting mold apparatus of the present invention described above, the support plate for supporting the pressurizing cylinder and the casting pin is located in the space between the pin plate and the C plate. The plate is located directly opposite to the movable mold, and even if the partial pressure means is provided, it is not necessary to increase the length of the extrusion pin and the degree of freedom of the installation location of the extrusion pin can be maintained.

[Brief description of drawings]

FIG. 1 is a schematic view showing a casting mold device according to a first embodiment of the present invention.

FIG. 2 is a schematic view showing a casting mold device according to a second embodiment of the present invention.

FIG. 3 is a schematic view showing a casting mold device according to a third embodiment of the present invention.

FIG. 4 is a schematic view showing a conventional casting mold device.

FIG. 5 is a schematic view showing another conventional casting mold device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable mold 2'Cavity 5 Die base 7 C plate 8 Pin plate 10 Extrusion pin 11 Stepped pin 13 C plate connecting plate 14 C plate connecting rod 15 Pressure cylinder as a partial pressure means 18 Pressure pin as a partial pressure means 19 Cast pin 20 Sleeve-shaped push pin 21 as partial push means 21 Retreat limit stopper

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location // B29C 45/26 7415-4F 45/40 7639-4F

Claims (5)

[Claims] 1. A movable die, a die base connected to the movable die via a spacer, a C plate movably provided in a space between the movable die and the die base, and the C plate. An ejector rod connected to the C plate for reciprocating operation, a pin plate connected to the C plate in a space between the movable mold and the die base, and a penetrating member provided in the movable mold, In a casting mold apparatus having an extruding pin fixed to the pin plate and capable of projecting and retracting with respect to a filling in the movable mold cavity by reciprocating movement of the ejector rod, the C plate and the pin plate are separated from each other. A support plate, which is fixed to each other and fixed to the movable mold, is immovably positioned in a space between the C plate and the pin plate, and the filling plate in the mold cavity is partially attached to the support plate. That partial pressure means for applying pressure is provided Casting mold apparatus according to symptoms. 2. The partial pressurizing means includes a pressurizing cylinder attached to one surface of the support plate, and the pressurizing cylinder located on the other surface side of the support plate and penetrating the movable mold. The casting mold apparatus according to claim 1, wherein the casting mold apparatus comprises a partial pressure pin that partially pressurizes the filling in the cavity by operating a cylinder. 3. A C-plate connecting plate is directly fixed to the C-plate,
The C-plate connecting plate is fixed to the pin plate via a C-plate connecting rod so as to be separated from the pin plate, and the supporting plate is located in a space between the pin plate and the C-plate connecting plate. The casting mold apparatus according to claim 2. 4. The pin plate is directly fixed to the C plate via a stepping pin, and the pin plate is provided with a retreat limit stopper capable of contacting the surface of the C plate. The casting die device according to claim 2. 5. A movable mold, a die base connected to the movable mold via a spacer, a C plate movably provided in a space between the movable mold and the die base, and the C plate. An ejector rod connected to the C plate for reciprocating operation, a pin plate connected to the C plate in a space between the movable mold and the die base, and a penetrating member provided in the movable mold, In a casting mold apparatus having an extruding pin fixed to the pin plate and capable of projecting and retracting with respect to a filling in the movable mold cavity by reciprocating movement of the ejector rod, the C plate and the pin plate are separated from each other. A support plate, which is fixed to each other and fixed to the movable mold, is immovably positioned in a space between the C plate and the pin plate, and a cast pin protruding into the cavity is provided in the support plate. Fixed through the plate, inside the cavity In order to extrude the filling material around the cast pin, the pin plate is fixed with a partial extruding means located on the outer peripheral side of the cast pin and capable of appearing and retracting in the cavity by the movement of the pin plate. A casting mold device characterized in that