JP2001340953A - Die apparatus for die-casting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die apparatus for die-casting which can easily change an initial die setup based on a change of molded products and can lower the die manufacturing cost per every product in wide compliance with accuracy, configuration, dimension and quality demanded by each product. SOLUTION: A cassette section 72 in the movable side which is composed of a core 9 and a cassette base 10 holding the core 9 in the movable side is loaded detachably in an L letter die 1 in the movable side, and with this loaded condition, a positioning means to position the cassette section 72 in the movable side in the orthogonal direction in at least a die opening direction against the L letter die 1 in the movable side and a fixing means to fix the cassette section 72 in the movable side against the L letter die 1 in the movable side are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die-casting die apparatus, and more particularly, to making a die into a cassette type, thereby facilitating changeover of a die by changing a product to be molded, and manufacturing a die for each product. The present invention relates to a die-casting die device capable of keeping costs low.

[0002]

2. Description of the Related Art Conventionally, as a cassette type die-casting die apparatus, the one shown in FIG. 12 is generally known. This mold apparatus includes a fixed mold 101 and a movable mold 102.

The stationary mold 101 has a sleeve 103 connected to a molten metal supply means such as a casting machine (not shown) at the center, and a guide pin 104a and a guide pin 10 on the left and right.
4b, the fixed base 105 and the fixed base 1
And a back plate 107 which is fixed to a fixed die plate of a casting machine (not shown) by a groove 106 on the side surface and the upper surface 108a of the fixed base 105 and the front surface 108b of the back plate 107. Cavity part 1
09 and the like are firmly held on a fixed core 110 formed on the front surface, and guide pins 111a and 1
11b.

[0004] On the other hand, the movable die 102 is fitted with the sleeve 103 at the time of casting, and a shunt 113 for smoothly distributing the supplied molten metal to the product portion is arranged at the center. A movable-side base 115 in which a guide bush 114a and a guide bush 114b respectively fitted to the guide pins 104b are arranged on the left and right;
A movable base 115 is attached, fixed to a movable die plate of a casting machine (not shown) by a groove 116 on the side surface, and has a projection plate 117 connected between a product projection mechanism of the casting machine (not shown) and a rear surface. Die block 118a
And the die block 118b, the movable core 121 having the upper surface 119a of the movable base 115 and the front surface 119b of the die block 118a and the die block 118b, and having a core 120 for product molding formed on the front surface. A guide bush 1 which is held firmly and fitted to the guide pins 111a and 111b at the time of mold matching.
22a and guide bush 122b are arranged on the upper left and right sides, and a movable side cassette 125 is connected to the rear side while holding a projecting pin 123 acting on the product projecting at the time of casting by a projecting base 124.

Here, the fixed mold 101 and the movable mold 102 are arranged on a casting machine (not shown) such that arrows z1 and z2 are on the same axis, and guide pins 104a and 104b are used at the time of mold matching. , 111a, 111
b is the guide bush 114a, 114b, 12
2a and 112b.

A similar key portion 126 is provided on the upper surface of the fixed base 105 and the movable base 115, and the same key portion 126 is provided on the corresponding bottom surface of the fixed cassette 112 and the movable cassette 125. The keyway not shown is provided,
The clearance for positioning in the directions of arrow x1 and arrow z1 and arrow x2 and arrow z2 on the four outer peripheral surfaces of the two is 0.
It is adjusted from 02 mm to about 0.04 mm.

The fixed cassette 112 has two inclined surfaces 127 opposed to each other at two locations on the left and right of the upper surface.
a and a clamp member 128 having a slope 127b,
Through hole formed in clamp member 128 and back plate 107
By pressing down with bolts 129 through the screw holes provided on the upper surface, the upper surface 108a of the fixed side base 105 and the back surface 108a of the fixed side base 105 are utilized by utilizing the component force of the drag generated in the y-direction and the z1 direction generated perpendicularly to the inclined surfaces 127a and 127b. It is firmly applied to the front surface 108b of the plate 107 at the same time, and performs positioning and fixing in the directions of arrows y and z1.

[0008] Similarly, the movable-side cassette 125 also uses the clamp member 128 and the bolt 130 to move the movable-side base 11.
5 and the front surface 119b of the die block 118a and the die block 118b are firmly attached to the upper surface 119a at the same time, and perform positioning and fixing in the directions of arrows y and z2.

[0009] Further, in the protruding base 124, the protruding plate receiving portion 132a and the protruding base front surface 132b are similarly used by using the clamp member 128a and the bolt 131.
For positioning and fixing.

When casting a die-cast product using the cassette-type mold having the above structure, first, the fixed mold 101 and the movable mold 102 are arranged in the above-mentioned positional relationship, and each is attached to a die plate of a casting machine (not shown). Fix it.

Thereafter, the movable cassette 125 including the fixed cassette 112 and the projecting base 124 is placed on the fixed base 105 and the movable base 115, respectively, and the key portion 126 and the bottom of the cassette bottom are respectively mounted. The key grooves are fitted and positioned and fixed by the mechanisms described above.

After the necessary preparation work, the movable mold 102 is moved in the direction of the fixed mold 101 on the casting machine and then clamped, and the molten metal is supplied from molten metal supply means (not shown).
Molding is performed in a product molding space formed by the fixed-side cavity portion 109 and the movable-side core portion 120. After the mold is opened, the product is taken out by the product protruding action of the protruding pin 123, and a predetermined number of products are taken out. And get the product.

In order to change the product, when changing the mold, first, the bolts 129, 130 and 131 for positioning and fixing the cassette are released, and the clamp members 128 are all removed. . Thereafter, the fixed cassette 112 and the movable cassette 12
5 is lifted upward and removed from each.

Then, a fixed cassette 112 and a movable cassette 125 corresponding to the product after the change are prepared, and the fixed base 105 and the movable base 11 are prepared in the same manner as described above.
5, and the key portions 126 are fitted in the key grooves, respectively, and are positioned and fixed by the above-described mechanisms. Thereafter, casting is performed in a similar process to obtain a predetermined number of products.

Japanese Patent Application Laid-Open No. 9-122871 discloses a die-casting mold capable of exchanging inserts.
In the mold apparatus of the present invention, both the fixed mold and the movable mold have a main mold having a concave portion having an opening above, and a slot provided on both side surfaces of the concave portion, A nest having projections on both sides that fit into slot portions provided on both sides of the concave portion and having an engraved surface for molding a product of a predetermined shape on the front side, and a holding member. Are fitted in the slots provided on both side surfaces of the concave portion of the main mold, and are accommodated in the concave portion of the main mold, and the nests accommodated in the concave portions of the main mold are pressed down by pressing members from above. It has a fixed structure.

When the insert is replaced in the mold apparatus, the insert is pulled up above the mold apparatus and removed from the main mold, and the insert used is lowered from above and attached to the main mold.

In addition, the product change can be dealt with only by replacing the ejector base connected to the rear of the insert with the insert of the movable mold, and the main mold and the holding member are shared. It is.

[0018]

However, the above-mentioned 2)
Each of the prior arts has the following problems. In the former, the fixed-side cassette 112 is firmly abutted on the upper surface 108a of the fixed-side base 105 and the front surface 108b of the back plate 107 at the same time by surface contact, so that it is positioned in the directions of the arrows y and z1. However, in the direction of arrow x1, the fixed base 1
The clearance between the key portion 126 provided on the upper portion 05 and the key groove provided on the bottom surface of the fixed cassette 112 fitted to the key portion 126 has a play corresponding to about 0.02 mm to 0.04 mm. Due to a load such as mold clamping or mold opening in the casting process, the displacement of the fixed-side cassette 112 relative to the fixed-side base 105 and the back plate 107 is reduced.

Similarly, the movable side cassette 125 has the same amount of displacement in the direction of arrow x2 with respect to the movable side base 115 and the die blocks 118a and 118b.

By the way, the guide function of correcting the displacement between these cassettes between the fixed mold and the movable mold at the time of mold clamping is based on the above-described structure, the guide pins 111a and 111b on the fixed cassette 112. And a corresponding guide bush 122 on the movable cassette 125.
a and the guide bush 122b, and the positioning accuracy is remarkably short while four guides function in a normal die casting mold. Therefore, the amount of displacement of the fixed-side cassette 112 with respect to the fixed-side base 105 and the back plate 107, and the movable-side base 115 of the movable-side cassette 125 and the die block 1
The relative misalignment between the cassettes, which may be caused by the misalignment with respect to the die 18a and the die block 118b, is not sufficiently corrected at the time of mold clamping, and varies from shot to shot in each casting. As a result, the mold matching accuracy of a cast product is insufficient and cannot be applied to a product requiring high accuracy.

In the latter prior art, first, the change of the product can be dealt with only by replacing the fixed and movable side inserts and the ejector base connected behind the movable side mold insert. Since the main mold and the holding member that hold the nest on the outer periphery are shared, the components such as the slide or the vent for venting, which are often required in die casting, are free for the components other than the nest according to the product. Can not be placed in Even if a main mold provided with a one-way or two-way slide mechanism or a holding member provided with a one-way slide mechanism is shared, the slide at the same site must be used for each insert. so,
There are restrictions on the applicable product shapes. In the case where the slide mechanism is provided inside the nest, further restrictions are imposed on the dimensions of applicable products. Further, when the gas venting mechanism is not provided, quality defects such as nests are generated.

Further, in the above two prior arts, since the common main mold is made of a normal mold material, its hardness is equal to or less than that of the cassette or the nest after quenching and tempering. Therefore, in the long-term use of the main mold with repeated setups, in addition to the so-called "shattering" such as crushing, abrasion, and cracking due to mold clamping during casting and strong connection with the cassette, and joining with the cassette Micro-deformation such as dents and scratches due to sliding contact or collision with the surface or the mold mating surface is likely to occur, causing deterioration in the positioning accuracy of the cassette and the mold matching accuracy. As a result, in casting, not only defects such as out-of-dimensions, but also mold failures such as generation of burrs on the mold mating surface and defective sliding occur.

As described above, the accuracy and accuracy required in the prior art
Products that can satisfy the shape, size, and quality are severely limited, and there is a problem that the durability of a main mold that should be used for a long time at a high operation rate is insufficient.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is easy to change the mold by changing the product to be molded, and it is necessary to obtain the required accuracy, shape and shape of each product.
An object of the present invention is to provide a die-casting die apparatus capable of keeping a die manufacturing cost for each product low in correspondence with a wide range of dimensions and quality.

The present invention is also directed to a die-casting apparatus in which the same main mold is shared between different products for a long period of time at a high operation rate, and the cost of mold casting for each product can be kept low while maintaining the initial quality. It is an object to provide a mold device.

[0026]

According to the present invention, there is provided a die casting mold apparatus according to the present invention, comprising: a main mold attached to a molding machine; In a die-casting mold apparatus comprising a fixed mold and a movable mold which can be separated from each other and which comprises a cassette forming a cavity, an L-shaped main mold part, a core and a core are held. A cassette part comprising a cassette base, and the cassette part, with respect to the main mold part,
It is characterized by comprising positioning means for positioning at least in a direction perpendicular to the mold opening direction, and fixing means for fixing the cassette portion to the main mold portion.

According to a second aspect of the present invention, there is provided a die-casting die apparatus according to the first aspect.
The fixing means is operable in a mold clamped state.

Further, according to a third aspect of the present invention, there is provided the die casting die apparatus according to the first or second aspect, wherein at least a die contacting surface of the main die portion and a surface contacting the cassette portion. And a material having a higher hardness than the cassette base.

That is, in the die-casting die apparatus of the first aspect, the cassette portion is positioned by the positioning means on the plurality of reference planes inside the L-shaped main die portion, while the cassette portion is positioned. By fixing to the main mold part by the fixing means, the cassette part is always accurately positioned on the reference surface of the main mold part, so that the mold matching accuracy at the time of casting depends only on the mold matching accuracy of the main mold, It can respond to high required accuracy.

Also, by forming the main mold portion into an L-shape, the core portion in the cassette portion does not contact the main mold portion.
In each direction, a slide and a venting mechanism for venting can be freely provided for each product. Therefore, it is possible to cope with a wide variety of required product shapes, dimensions and quality by a casting plan.

According to a second aspect of the present invention, there is provided a die casting die apparatus, wherein the cassette portion is fixed in a state of being positioned with respect to the main die portion. Performed from outside with Thereby, workability and safety can be improved.

According to the third aspect of the present invention, at least the mold contact surface of the main mold portion and the surface in contact with the cassette portion are made of a material having a higher hardness than that of the cassette base. Prevents settling of the main mold part due to mold clamping and strong connection with the cassette, and prevents dents and scratches on the main mold part even when sliding or colliding with the cassette joining surface or mold mating surface during setup. It is possible to prevent minute deformation.
Therefore, the main mold portion can withstand long-term use by being shared by a large number of products, and can maintain the positioning accuracy and the mold matching accuracy of the cassettes at the initial stage.

[0033]

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing a movable mold in a die casting mold apparatus in a three-dimensional view from a mold-matching surface, and FIG. 2 shows a main mold portion and a movable cassette portion of the movable mold in a non-operation side. FIG. 3 is an exploded perspective view showing a fixed mold in a die-casting mold apparatus in a three-dimensional view from a mold-matching surface, and FIG. FIG. 5 is a side view showing a part of the main mold portion and the fixed-side cassette portion as viewed in section from the non-operation side, and FIG. 5 shows a movable-side cassette portion provided with a slide mechanism on the non-operation side and a chill vent mechanism on the top side. FIG. 6 is a perspective view three-dimensionally showing a fixed cassette unit provided with a slide mechanism on the non-operation side and a chill vent mechanism on the top side. In the following description, in this embodiment, the non-operation side is a detachable cassette unit, but the operation side may be configured as a cassette unit.

The die-casting die apparatus includes a movable die A shown in FIGS. 1 and 2 and a fixed die B shown in FIGS. The movable mold A is composed of a movable main mold part 71 and a movable cassette part 72, and the movable cassette part 72 is detachable from the movable main mold part 71.

The movable-side main mold 71 further includes a movable-side mold L
Character (hereinafter referred to as a movable L-shaped) 1, a movable mold abutment plate (hereinafter referred to as a movable abutment plate) 2 having a U-shaped space 2 a, and left and right divers 3 and the main mold protrusion 73. The movable-side L-shaped member 1, the movable-side abutment plate 2 and the die base 3 are fixed to each other with the movable-side abutment plate 2 positioned between the movable-side L-shaped member 1 and the die base 3 by bolts (not shown). And the main mold protrusion 73 is provided between the left and right dies 3 for mold clamping.
It is arranged movably in the Z direction parallel to the mold opening direction. In the present embodiment, the material of the movable-side L-shape 1 and the movable-side abutment plate 2 is made of pre-hardened steel having a hardness of about HRC32 and relatively good machinability.

The movable-side L-shape 1 has an L-shape when viewed from the side of the mating surface with the fixed-side mold B (the front right side in FIG. 1, the left side in FIG. 2). An x-direction applying reference surface 1a and a y-direction applying reference surface 1b for applying the cassette unit 72 in the x direction and the y direction
It is provided on the side surface of the L-shaped rising portion 1e and the upper surface of the flat portion 1f. Here, the x direction and the y direction are a direction perpendicular to the left and right directions and a direction perpendicular to the vertical direction with respect to the z direction when viewed from the mold matching surface. A guide bush 23 for accurately positioning the fixed-side mold B at the time of mold clamping is provided on the mold-matching surface of the movable-side L-shaped mold 1 with a rising portion 1e, a flat portion 1f, and a rising portion. A total of three are buried, one each at the boundary between the portion 1e and the plane portion 1f.

The left and right dies 3 are opposed to each other at a predetermined interval in the left and right directions (x direction) when viewed from the mold-matching surface side.
On the opposing surfaces inside the left and right divers 3, flange portions 3 a extending in the z direction are provided at four locations in parallel, two at the top and two at a distance in the y direction. . A protruding plate A4 and a protruding plate A
4, a projecting plate B5 shorter in the y-direction and two main mold projecting part return pins (hereinafter referred to as main mold part return pins) 6
And a main mold projecting portion 73 composed of one main mold projecting portion projecting pin (hereinafter, referred to as a main model projecting pin) 7 is provided with a total of four grooves 4a provided two on each side of the projecting plate A4. The flanges 3a are slidably fitted to each other. In addition, a locking portion 3b for preventing the main mold projecting portion 73 from dropping off from the left and right bases 3 is provided at the outer end of the facing surface of the left and right bases 3. Yes,
Grooves 3c for attachment to a die plate (not shown) are provided on both outer surfaces in the y direction.

The protruding plate A4 and the protruding plate B5 sandwich the flange 6a and the brim 7a provided at the ends of the main mold return pins 6 and the main mold protruding pins 7, respectively. With the front end of 7 facing the movable L-shaped 1 side, the lower end 7 is fixedly adhered to the lower end thereof with a bolt (not shown).

The main mold return pin 6 is inserted into a return pin through hole 74 and a return pin through hole 75, each of which has a leading end portion penetrating through the movable side abutment plate 2 and the movable side L-shape 1. The tip can protrude from the mold matching surface. The length of each main mold part return pin 6 is adjusted so that the tips thereof coincide with the mold mating surface in a state where the protruding plates A4 and B5 to be fixed are at the most retracted positions.

The protruding pin 7 of the main die portion is inserted through a protruding pin through hole 76 whose leading end penetrates the movable abutment plate 2, and is further embedded in the movable L-shaped 1 and the movable L-shaped 1. It is inserted through a protruding pin through hole 77 which penetrates the shunt 8 fixed to the movable side L-shape 1 by a bolt (not shown), and the tip protrudes from the mold mating surface by the movement of the protruding plate A4 and the protruding plate B5. It is supposed to be. The length of the main mold section protruding pin 7 is adjusted so that the tip thereof coincides with the engraved portion of the shunt 8 in a state where the protruding plate A4 and the protruding plate B5 to be fixed are at the most retracted positions. .

The main mold projecting portion 73 is guided in the z direction by using the flange 3a of the die 3 and the groove 4a of the projecting plate A4, and the main mold return pin 6 and the return pin through holes 74 and 75 as guides. It is slidable, and the protruding plate A4 and the protruding plate formed by the main mold part return pin 6 when the mold is opened and the main mold part protruding pin 7 is moved by the movement of the protruding plate A4 and the protruding plate B5 when the mold is opened. The B5 and the main mold part protruding pin 7 are moved to the initial position.

On the other hand, the movable side main mold portion 7 of the movable side mold A
The movable-side cassette unit 72 detachably attached to the first unit 1 includes a movable-side mold core (hereinafter, referred to as a movable-side core) 9 in which a product cavity is engraved, and a movable-side metal holding the movable-side core 9. It is roughly composed of a mold cassette base (hereinafter, referred to as a movable cassette base) 10 and a cassette protrusion 81. The movable core 9 and the movable cassette base 10 are fixed to each other by a fastening member such as a bolt (not shown). In the present embodiment, the material of the movable-side cassette base 10 is made of carbon steel for machine structural use having a hardness of about HRC13.

The movable-side cassette base 10 has x-direction reference surfaces 10a and y for applying to the x-direction application reference surface 1a and the y-direction application reference surface 1b of the movable L-shape 1.
While having the direction reference surface 10b, the movable-side core 9
Similarly, it has an x-direction reference surface 9a and a y-direction reference surface 9b for applying to the x-direction application reference surface 1a and the y-direction application reference surface 1b. The surfaces 9a and 10a and the two y-direction reference surfaces 9b and 10b for applying in the y-direction are adjusted to be on the same plane.

Further, on the x-direction reference surface 10a and the y-direction reference surface 10b of the movable cassette base 10, an end opposite to the mold-matching surface is projected leftward in the x direction and downward in the y direction. An x-direction reference surface collar 10c and a y-direction reference surface collar 10d are provided.

On the x-direction abutment reference surface 1a and the y-direction abutment reference surface 1b of the movable L-shaped 1 on which the movable cassette base 10 is arranged, the movable L-shaped 1 and the movable When the attachment plate 2 is fixed, the x-direction reference surface flange 10c and the y-direction reference surface flange 1 of the movable cassette base 10 are fixed.
0d so that the movable-side L-shape 1 forms a groove shape for detachably holding the movable-side cassette base 10 in the x-direction reference surface step 1c and the y-direction reference surface step 1d.
Is provided.

The movable-side cassette 72 is replaced with the movable-side main mold 71.
In the x-direction reference surface step 1c and the y-direction reference surface step 1d, a part thereof is fixed as a fixing means.
Each of the push plates 18a is movable in the direction. The push plate 18a is movably connected to the movable-side L-shape 1 with a shoulder bolt 19a having a tip screwed into the movable-side L-shape 1 and fixed thereto. The screw 20a is screwed into the screw hole 20b machined in the z direction, so that the push plate 18a is pressed toward the movable contact plate 2 by the tip of the bolt 20a and advances, and the push plate of the x-direction reference surface step 1c is pushed. Between the push plate 18a of the step 18a and the y-direction reference surface step 1d and the movable-side abutment plate 2, the x-direction reference surface flange 1 of the movable-side cassette base 10
It is configured to sandwich the 0c and y-direction reference plane collar 10d.

As a positioning means for positioning the movable-side cassette portion 72 with respect to the movable-side main mold portion 71, a boundary between the x-direction reference surface 10a and the y-direction reference surface 10b of the movable-side cassette base 10 is A planar chamfered portion 11a having a threaded normal screw hole 11b is provided, and the movable side L-shaped 1 has a through hole 21b formed on the outer surface of a rising portion 1e of the movable side L-shaped 1. The movable cassette base 10 is provided with reference planes 1a and 10a and reference planes 1b and 10b with the movable-side cassette base 10 in a normal direction of a chamfered portion 21a formed at a boundary between the movable cassette base 10 and the outer surface of the plane portion 1f. In the abutted state, the through hole 21 is formed from the outside of the movable L-shaped 1.
The retractable bolt 21c inserted into the movable cassette base 10b can be screwed into the screw hole 11b of the movable cassette base 10.

Further, at the end of the y-direction reference surface 10b opposite to the chamfered portion 11a of the movable cassette base 10,
A planar chamfer 12a is provided.

On the other hand, the movable side L-shape 1 has a guide plate 13b at the upper end having a slope 13b protruding above the y-direction abutment reference surface 1b so as to abut the chamfered portion 12a of the movable side cassette base 10. Reference numeral 13a is fixed to the end surface in the x direction of the plane portion of the movable L-shaped 1 by a bolt (not shown).

The cassette projecting portion 81 is provided with a projecting plate C1.
4, a projecting plate D15, two cassette projecting portion return pins (hereinafter referred to as cassette portion return pins) 16 and five cassette projecting portion projecting pins (hereinafter referred to as cassette portion projecting pins) 17. The protruding plate C14 and the protruding plate D15 sandwich the flange 16a and the flange 17a provided at the end of each cassette part return pin 16 and each cassette part protruding pin 17 therebetween,
With the tips of the pins 16 and 17 facing the movable cassette base 10, the protruding plate D15 is fixed to the movable cassette base 10 with bolts (not shown).

The protruding plate C14 and the protruding plate D15 are defined by y
The protruding plate C14 has a different length in the direction and is longer, and a step 81a is formed at a lower portion when the protruding plates C14 are fixed to each other with their upper ends aligned.

On the other hand, the projecting plate B of the main mold projecting portion 73
A step 5a is provided at the upper end of the step 5 so as to form a groove shape that fits into the step 81a of the cassette projecting portion 81 when fixed to the projecting plate A4, and the step 81a and the step 5a are fitted together. In this case, the upper end surface of the main mold projecting portion 73 (the upper end surface of the projecting plate A4) and the upper end surface of the cassette projecting portion 81 (the upper end surfaces of the projecting plate C14 and the projecting plate D15) match. On the upper end surface of the protruding plate A4,
Two connecting grooves 4b are provided, and the protruding plate C14 is provided.
And two connecting grooves 14 on the upper end surface of the protruding plate D15.
a and 15a are provided so as to match each other.

The main projecting portion 73 and the cassette projecting portion 81
Means that the connecting rod 22 is fitted into the connecting grooves 4b, 14a and 15a in the state where the step 5a and the step 81a are fitted, and the main-type projecting portion 73 and the cassette projecting portion 81 are positioned in the x direction. At the same time, the projecting plate D15 and the projecting plate A4 are sandwiched between the front flange 22a and the rear flange 22b formed at both ends of the connecting rod 22, and the projecting plate A4 and the projecting plate C14 are brought into contact with each other. Can be connected.

Each cassette section return pin 16 and each cassette section projecting pin 17 pass through the space 2a of the movable side abutment plate 2, and each cassette section return pin 16 is located above the movable side core 9 at the movable side. The respective return pin through-holes 82 penetrate the cassette base 10 in the z direction, and the respective cassette portion projecting pins 17 connect the movable cassette base 10 and the movable core 9 in the z direction. Each of the projecting pin through holes 83 penetrates, and slides in the z direction together with the main mold projecting portion 73, the projecting plate C14 and the projecting plate D15, and the respective ends thereof come out of the mating surface of the movable side cassette base 10. It is possible to protrude.

The length of each cassette section return pin 16 is
The movable-side cassette 72 is mounted on the movable-side main mold 71, and the tip of the movable-side cassette base 10 is matched with the movable-side cassette base 10 in a state where the protruding plates C <b> 14 and the protruding plate D <b> 15 to be fixed are at the most retracted positions. Adjusted to match the surface.

The length of each cassette projecting pin 17 is such that the projecting plate C14 and the projecting plate D15 to which the movable cassette 72 is mounted on the movable main mold 71 are most retracted. In the state, the tip is movable side core 9
Is adjusted so as to coincide with the formation surface of the product cavity engraving portion.

On the other hand, the fixed mold B shown in FIGS. 3 and 4 includes a fixed main mold 91 and a fixed cassette 92. The fixed cassette 92 is fixed to the fixed main mold 91. It is detachable.

The fixed-side main mold portion 91 further includes a fixed-side mold L
It is composed of a letter-shaped (hereinafter referred to as fixed-side L-shaped) 31 and a fixed-side die-applying plate (hereinafter referred to as the fixed-side applied plate) 32, and is fixedly integrated with a bolt (not shown). In the present embodiment, the material of the fixed-side L-shape 31 and the fixed-side abutment plate 32 is made of pre-hardened steel having a hardness of about HRC32 and relatively good machinability.

The fixed-side L-shape 31 has an L-shape having a rising portion 31e and a flat portion 31f corresponding to the rising portion 1e and the flat portion 1f of the movable L-shape 1, respectively. The x-direction abutment reference surface 31a and the y-direction abutment reference surface 31b for abutting the fixed cassette portion 92 in the x-direction and the y-direction are provided on the side surface of the L-shaped rising portion 31e and the upper surface of the flat portion 31f. Have.

The fixed-side L-shape 31 has three guide bushes 23 embedded in the movable-side L-shape 1 for accurate positioning with the movable-side mold A during mold clamping. A total of three guide pins 37 that can be fitted are buried in each of the rising portion 31e and the plane portion 31f and in the boundary portion between the rising portion 31e and the plane portion 31f. The guide bush 23 and the guide pin 37 function as a guide mechanism in matching the movable mold A and the fixed mold B.

Further, when the guide bush 23 and the guide pin 37 are fitted to and brought into contact with the movable L-shaped member 1, the fixed L-shaped member 31 is embedded in the movable L-shaped member 1. A sleeve 33 for supplying the molten material to be fitted to the shunt 8 is embedded. The sleeve 33 penetrates through the fixed-side L-shape 31. The fixed-side abutment plate 32 is provided with a hole 34 for embedding the sleeve 33. A groove 32a for attachment is provided in the y direction.

On the other hand, the fixed side main mold portion 9 of the fixed side mold B
The fixed-side cassette portion 92 which is detachably mounted on the fixed die 1 includes a fixed-side mold core (hereinafter, referred to as a fixed-side core) 35 in which a product cavity is engraved, and a fixed-side metal holding the fixed-side core 35. It is schematically constituted by a mold cassette base (hereinafter, referred to as a fixed-side cassette base) 36. Fixed side core 35
The fixed-side cassette base 36 is fixed to the fixed-side cassette base 36 by a fastening member such as a bolt (not shown). In the present embodiment, the material of the fixed-side cassette base 36 is made of carbon steel for machine structural use having a hardness of about HRC13.

The fixed-side cassette base 36 includes an x-direction reference surface 36a and a y-direction reference surface 36b for applying to the x-direction application reference surface 31a and the y-direction application reference surface 31b of the fixed-side L-shape 31. And the fixed-side core 35 similarly has an x-direction reference surface 3 for applying to the x-direction application reference surface 31a and the y-direction application reference surface 31b.
5a and y-direction reference surfaces 35b, both x-direction reference surfaces 35a and 36a for x-direction application and both y-direction reference surfaces 35b and 36b for y-direction application
Are adjusted to be on the same plane.

On the x-direction reference surface 36a and the y-direction reference surface 36b of the fixed-side cassette base 36, the end opposite to the mold-matching surface is projected rightward in the x direction and downward in the y direction. An x-direction reference surface collar 36c and a y-direction reference surface collar 36d are provided.

The fixed-side L-shaped part 31 and the fixed-side fixed part 31 are placed on the x-direction contact reference plane 31a and the y-direction contact reference plane 31b of the fixed-side L-shaped part 31 on which the fixed-side cassette base 36 is disposed. When the attachment plate 32 is fixed, the fixed-side cassette base 36 is fitted with the x-direction reference surface flange portion 36c and the y-direction reference surface flange portion 36d, and the fixed-side L-shaped portion 31 is fixed. An x-direction reference surface step 31c and a y-direction reference surface step 31d are provided so as to form a groove shape for detachably holding the screw 36.

The fixed-side cassette portion 92 is fixed to the fixed-side main mold portion 91.
In the x-direction reference surface step 31c and the y-direction reference surface step 31d, the movable side L
Similar to the character shape 1, a part thereof is constituted by a push plate 18b movable in the Z direction. The push plate 18b is movably connected to the fixed-side L-shape 31 with a shoulder bolt 19b whose tip is screwed into and fixed to the fixed-side L-shape 31. The bolt 20c is screwed into the screw hole 20d machined in the z-direction, so that the push plate 18b is pressed toward the fixed-side abutment plate 32 at the tip of the bolt 20c and advances, and the push plate of the x-direction reference surface step 31c is pushed. 18b and y-direction reference plane step 31
The x-direction reference surface flange portion 36c and the y-direction reference surface flange portion 36d of the fixed-side cassette base 36 are sandwiched between the push plate 18b of d and the fixed-side abutment plate 32, respectively.

As a positioning means for positioning the fixed-side cassette portion 92 with respect to the fixed-side main mold portion 91, a boundary between the x-direction reference surface 36a and the y-direction reference surface 36b of the fixed-side cassette base 36 is A flat chamfered portion 11c having a threaded normal screw hole 11d is provided, and the fixed side L-shape 31 has a through hole 21e formed on the outer surface of a rising portion 31e of the fixed side L-shape 31. And the plane part 31f
It is provided in the normal direction of the planar chamfered portion 21d formed at the boundary with the outer surface, and the fixed cassette base 36 is in contact with the reference surfaces 31a and 36a and the reference surfaces 31b and 36b. Thus, the pull-in bolt 21f inserted from the outside of the fixed-side L-shape 31 into the through hole 21e can be screwed into the screw hole 11d of the fixed-side cassette base 36.

Further, at the end of the y-direction reference surface 36b facing the chamfered portion 11c of the fixed-side cassette base 36,
A planar chamfer 12b is provided.

On the other hand, the fixed-side L-shape 31 has a guide plate 13d at the upper end having a slope 13d protruding above the y-direction contact reference surface 31b so as to contact the chamfered portion 12b of the fixed-side cassette base 36. 13c is fixed side L by a bolt (not shown).
It is fixed to the end surface in the x direction of the flat portion of the character 31.

When the movable mold A and the fixed mold B are clamped, at least the movable core 9 and the fixed core 35 tightly form a mating surface on the entire surface in contact with each other. The movable-side L-shaped 1 and the fixed-side L-shaped 31, the movable-side core 9 and the fixed-side core 35, the movable-side cassette base 10 and the fixed-side cassette base 36, It is configured.

In this embodiment, the movable L-shaped 1
The fixed-side L-shaped member 31, the movable-side abutment plate 2 and the fixed-side abutment plate 32 are formed of pre-hardened steel having a hardness of about HRC32 and relatively good cutting properties, and are provided with the movable-side cassette base 10 and the fixed-side The cassette base 36 has a hardness HR
Although it has been described that it is formed of carbon steel for machine structure of about C13, it is not limited to these materials, and can be formed by using other materials. That is, the hardness of the movable-side L-shape 1 and the fixed-side L-shape 31 and the hardness of the movable-side abutment plate 2 and the fixed-side abutment plate 32 are at least the movable-side cassette base 10 and the fixed-side cassette base 36. It can be formed using materials such as steel, non-ferrous metal, ceramics, etc., which satisfy the function as a mold material and has a hardness higher than the hardness of the material, and a heat treatment and a surface treatment method for those materials can be selected.

Next, a case where the movable-side cassette 72 and the fixed-side cassette 92 have a chill vent and a slide mechanism will be described with reference to FIGS.

The movable cassette 72 has a chill block A40 having a gas vent vent 40a formed on the front surface thereof. The front surface of the chill block A40 is brought into contact with the contact surface (mold matching surface) with the fixed cassette base 36. , And are buried in the movable cassette base 10 in the y direction. The upper end of the chill block A40 coincides with the upper surface of the movable cassette base 10,
The gas venting portion 40a is opened to the upper surface of the movable-side cassette base 10, and the lower end thereof contacts the upper surface of the movable-side core 9.
Is connected to the cavity of the movable-side core 9 through a communication hole 9c formed at the center of the movable core.

The movable side cassette base 10 has a slide insert 42 for forming an undercut portion of a cast product.
So that the movable cassette base 10 can protrude and retract from the product cavity from the opposite side of the x-direction reference plane 10a of the movable cassette base 10.
The key portion (not shown) of the slide insert (42) is set so as to fit into a key groove (not shown) of the movable cassette base (10). The base 42a of the slide insert 42 has a mold opening direction (Z direction).
, An inclined hole 43 inclined at a predetermined angle is provided.

On the other hand, the fixed side cassette portion 92 has a chill block B41 having a vent vent portion 41a formed on the front surface.
When the movable mold A and the fixed mold B are clamped with their front faces aligned with the contact surface (mold matching surface) with the movable cassette base 10, a position opposed to the chill block A 40. And is embedded in the fixed-side cassette base 36 in the y-direction. Therefore, the chill block A4
0 and the front of the chill block B41 fit together,
A gas vent is formed by the gas vents 40a and 41a.

The fixed cassette base 36 has embedded therein an inclined pin 44 projecting from the mold mating surface and inclined at the same angle as the inclined hole 43. This inclined pin 4
The leading end of 4 has the movable side mold A and the fixed side mold B opened, and is in a position corresponding to the opening of the inclined hole 43 in a state where the slide insert 42 does not enter the product cavity.
When the movable mold A approaches the fixed mold B in order to clamp the mold, the inclined pin 44 is inserted into the inclined hole 43 from the tip thereof, and the slide insert 42 is slid in the x direction. When the mold is inserted into the product cavity and the mold clamping is completed, the slide insert 42 stops at a predetermined position. On the other hand, when the mold is opened, the slide insert 42 is moved from the undercut portion of the casting by moving the movable mold A in the z direction and moving the inclined hole 43 out of the inclined pin 44. Move in the x direction to release the mold.

The operation relating to the mounting and dismounting of the die casting die apparatus of the present embodiment having the above-described configuration will be described with reference to FIGS.

First, the movable-side main mold 71 and the fixed-side main mold 9
The work 1 is carried out by suspending the movable main mold 71 and the fixed main mold 91 together with a crane or the like, lowering the caster from above, and clamping the movable die plate (not shown) of the casting machine. And fixed to the fixed die plate.

Next, the operation of attaching the movable cassette 72 and the fixed cassette 92 to the movable main mold 71 and the fixed main mold 91 will be described.

The movable main mold 71 is moved in the z direction by the operation of the casting machine, and both main molds 71 and 91 are opened. At this time, it is confirmed that the main mold protrusion 73 held by the die 3 of the movable main mold 71 is at the most retracted position.

First, when the movable cassette section 72 is mounted, the cassette section return pin 16 and the cassette section protruding pin 17 are connected to the return pin through hole 82 of the movable cassette base 10 and the movable cassette base 10. The cassette protruding portion 8 is inserted through the protruding pin through hole 83 communicating with the
After the cassette projecting portion 81 is adjusted to the most retracted position, the movable cassette portion 72 is lifted by a crane or the like, and the movable cassette portion 72 is moved upward to the movable main mold portion 71 of the movable mold A. Descent from.

Then, the step 81a of the cassette projecting portion 81 is formed in the groove of the main die projecting portion 73 formed by the projecting plate A4 and the step 5a of the projecting plate B5, and the movable side contact plate 2 and the movable side L X-direction reference surface steps 1c and y of character 1
The x-direction reference surface flange 10c and the y-direction reference surface flange 10d of the movable cassette base 10 are simultaneously fitted into the respective grooves formed by the direction reference surface step 1d.

Subsequently, by lowering the movable cassette portion 72, the chamfered portion 12a of the movable cassette base 10 abuts on the slope 13b of the guide plate 13a, and the movable cassette base 10 is moved in the x direction. The reference surface 10a is pushed in a direction approaching the movable-side L-shaped 1 in the x-direction abutting reference surface 1a.

Further, by lowering the movable-side cassette portion 72, the y-direction reference surface 10b of the movable-side cassette base 10 is brought into contact with the y-direction abutment reference surface 1b of the movable L-shaped 1.
Abut.

At this time, since the material of the movable side L-shaped 1 and the movable side attaching plate 2 is sufficiently harder than the material of the movable side cassette base 10, the movable side L-shaped 1 and the movable side attaching plate 2 are made. The movable-side main mold part 71 comprising the movable-side cassette part 72
No small deformation such as dents or scratches due to sliding contact or collision with

Thereafter, the movable-side L-shaped 1 is formed by positioning means including the chamfered portion 11a and the screw hole 11b of the movable-side cassette base 10, the chamfered portion 21a of the movable-side L-shaped 1 and the drawing bolt 21c. Chamfer part 2 on the lower side
Pull-in bolt 21 that has penetrated through hole 21b from 1a
c is screwed into the screw hole 11b of the movable-side cassette base 10, and the movable-side cassette portion 72 is drawn toward the movable-side L-shaped 1 so that the x-direction reference surface 10 of the movable-side cassette base 10
The reference surfaces 10b in the a and y directions are simultaneously pressed against the reference surfaces 1a in the x direction and the reference surfaces 1b in the y direction of the movable L-shaped 1.

In this state, the movable side L-shape 1 is fixed to the movable side by the fixing means including the push plates 18a and the bolts 20a which respectively form the x-direction reference surface step 1c and the y-direction reference surface step 1d. Bolts 20a are evenly screwed into the screw holes 20b of the L-shape 1 from the mating surfaces with respect to the respective push plates 18a, and the x-direction reference surface flange portions 10c of the movable cassette base 10 via the respective push plates 18a. And y
Both the direction reference surface brim portion 10d is pressed against the movable side abutting plate 2, the movable side cassette portion 72 is fixed to the movable side L-shaped 1 and the movable side main die portion 71 and the movable side cassette portion 72 are integrated. Let it.

Further, the connecting groove 4b provided above the projecting plate A4 and the connecting groove 14a and connecting 15a provided above the projecting plate C14 and the projecting plate D15.
Then, a connecting rod 22 having a front flange portion 22a and a rear flange portion 22b at both ends is inserted from above, and the protruding plate A4 and the protruding plate D15 have a step 5a of the main mold projecting portion 73 and a step 81a of the cassette projecting portion 81. Plate C engaging with
14, the front flange 22a and the rear flange 22
The main projecting portion 73 and the cassette projecting portion 81 are connected by sandwiching the projecting plate A4 and the projecting lower portion C15 with the projecting portion b.

Here, even if the movable-side cassette portion 72 is firmly fixed to the movable-side main mold portion 71 by the fixing means, the movable-side L-shaped 1 and the movable-side abutment plate 2 and the movable-side cassette base Due to the difference in the hardness of the material from the material 10, settling does not occur in the movable-side main mold 71.

Next, the case where the fixed-side cassette 92 is attached to the fixed-side main mold 91 will be described. Similarly to the movable cassette 72, first, the fixed cassette 92 is lifted by a crane or the like, and the fixed cassette 92 is lowered from above to the fixed main mold 91 of the fixed mold B.

Then, each groove formed by the fixed-side abutment plate 32 and the x-direction reference surface step 31c and the y-direction reference surface step 31d of the fixed-side L-shape 31 is provided with the fixed-side cassette base 36. The x-direction reference surface flange 36c and the y-direction reference surface flange 36d are fitted respectively.

Subsequently, by lowering the fixed cassette portion 92, the chamfered portion 12b of the fixed cassette base 36 comes into contact with the slope 13d of the guide plate 13c, and the fixed cassette base 36 is moved in the x direction. The reference surface 36a is pushed in a direction approaching the x-direction contact reference surface 31a of the fixed-side L-shape 31.

Further, by lowering the fixed-side cassette portion 92, the y-direction reference surface 36b of the fixed-side cassette base 36 is brought into contact with the y-direction contact reference surface 3 of the fixed L-shaped 31.
1b.

At this time, since the material of the fixed-side L-shape 31 and the fixed-side abutment plate 32 is sufficiently harder than the material of the fixed-side cassette base 36, the fixed-side L-shaped 31 and the fixed-side abutment plate 32 are formed. The fixed-side main mold portion 91 made of 32 does not suffer microdeformations such as dents and scratches due to sliding contact and collision with the fixed-side cassette portion 92.

Thereafter, the fixed-side L-shaped 31 is fixed by positioning means including the chamfered portion 11c of the fixed-side cassette base 36, the screw hole 11d, the chamfered portion 21d of the fixed-side L-shaped 31 and the drawing bolt 21f. The draw-in bolt 21f having the through hole 21e inserted from the lower chamfered portion 21d on the operation side is screwed into the screw hole 11d of the fixed-side cassette base 36 to draw the fixed-side cassette 92 toward the fixed-side L-shaped 31. The x-direction reference surface 36a and the y-direction reference surface 36b of the fixed-side cassette base 36 are
Are simultaneously pressed against the x-direction application reference surface 31a and the y-direction application reference surface 31b.

In this state, the fixed side L-shaped portion 31 is fixed to the fixed side by the fixing means including the push plate 18b and the bolt 20c which respectively constitute a part of the x-direction reference surface step 31c and a part of the y-direction reference surface step 31d. L-shaped 31 screw hole 20
d, a bolt 20c is evenly screwed into each of the push plates 18b from the mold-matching surface, and the x-direction reference surface flange portion 36c of the fixed cassette base 36 is inserted through each of the push plates 18b.
The y-direction reference surface flange 36d is pressed against the fixed-side abutment plate 32, and the fixed-side cassette 92 is fixed to the fixed-side L-shape 31, and the fixed-side main mold 91 and the fixed-side cassette 92 are joined together. Integrate.

Here, even if the fixed-side cassette portion 92 is firmly fixed to the fixed-side main mold portion 91 by the fixing means, the fixed-side L-shape 31 and the fixed-side abutment plate 32 and the fixed-side cassette base Due to the difference in the hardness of the material with the thread 36, no settling occurs in the fixed-side main mold portion 91.

Thus, the operation of attaching the movable cassette 72 to the movable main mold 71 and the operation of attaching the fixed cassette 92 to the fixed main mold 91 are completed.

Next, the operation of removing the movable cassette 72 and the fixed cassette 92 from the movable main mold 71 and the fixed main mold 91 will be described. In the removal operation, the movable mold A and the fixed mold B are opened by operating the casting machine.

First, the case where the movable-side cassette portion 72 is removed from the movable-side main mold portion 71 will be described. First, the bolt 20a is rotated by the fixing means of the movable-side mold A so as to be pulled out in the mold-matching surface direction. By releasing the pressing on the push plate 18a, the x-direction reference surface flange portion 10c and the y-direction reference surface flange portion 10d of the movable cassette base 10 are released.
Is released from the pressing of the movable-side abutment plate 2 with respect to.

Subsequently, in the positioning means, the movable type L
Loosen the pull-in bolt 21c tightened from the chamfered portion 21a on the lower side of the operation side of the character 1 and pull out the connecting rod 22 connecting the upper part of the main die protrusion 73 and the upper part of the cassette protrusion 81 to the connection groove 4b. , 14a and 15a.

After the member for fixing the movable cassette 72 to the movable main mold 71 is removed, the movable cassette 72 is lifted by a crane or the like, and the movable cassette 72 is moved to the movable main mold. Separated from 71.

Next, the case of removing the fixed-side cassette 92 from the fixed-side main mold 91 will be described. First, in the fixing means of the fixed-side mold B, the bolt 20c is rotated so as to be pulled out in the mold-matching surface direction. By releasing the pressing on the push plate 18b, the x-direction reference surface flange portion 36c and the y-direction reference surface flange portion 36d of the fixed cassette base 36 are released.
Is released to the fixed-side abutment plate 32.

Subsequently, in the positioning means, the fixed type L
Loosen the pull-in bolt 21f tightened from the chamfered portion 21d below the operation side of the character 31 and pull it out.

After the member for fixing the fixed-side cassette portion 92 to the fixed-side main mold portion 91 is removed, the fixed-side cassette portion 92 is lifted by a crane or the like, and the fixed-side cassette portion 92 is moved to the fixed-side main mold portion. Separated from 91.

With the above, the operation of removing the movable cassette 72 from the movable main mold 71 and the operation of removing the fixed cassette 92 from the fixed main mold 91 are completed.

When the movable cassette 72 and the fixed cassette 92 have a chill vent or a slide mechanism, the movable main mold 71 and the fixed main mold 9 are not required.
The operation of attaching and detaching the movable-side cassette unit 72 and the fixed-side cassette unit 92 to and from the unit 1 is exactly the same as the above-described operation, and a description thereof will be omitted.

According to the die-casting die apparatus of the present embodiment, three guides provided on the movable-side L-shape 1 are used for the mold matching between the movable-side main mold 71 and the fixed-side main mold 91. The reproducibility at the time of mold clamping can be sufficiently increased by the three guide mechanisms in which the bush 23 and the three guide pins 37 provided on the fixed-side L-shape 31 are fitted.

Further, the movable-side cassette portion 72 having the movable-side core 9 and the fixed-side cassette portion 92 having each of the reference surfaces on which the movable-side L-shaped 1 of the movable-side main mold portion 71 abuts and the fixed-side core 35. Each of the reference surfaces of the fixed-side main mold portion 91 to which the fixed-side L-shape 31 is applied are processed with high precision. And fixing the movable main mold 71 and the movable cassette 72, and the fixed main mold 91 and the fixed cassette 92 by the fixing means, respectively. The positional accuracy is ensured, and the displacement of the cavity between the movable mold A and the fixed mold B can be eliminated.

During the casting, the reference surfaces of the cassettes 72 and 92 are kept in contact with the reference surfaces of the main molds 71 and 91 by the positioning means.
The matching accuracy between the two is maintained, and sufficiently high reproducibility can be obtained.

Therefore, even in the case of precision setup change of the cast product, it is possible to cope with the simple work of replacing only the movable cassette 72 and the fixed cassette 92.

Further, if necessary for the cast product, a gas release mechanism such as a slide and a chill vent can be provided on each of the cassette portions 72 and 92 in a total of two directions, ie, the top side and one side direction of the mold. Can be made to correspond to the same main mold regardless of the presence or absence of a mechanism. Therefore, there are only a few restrictions on the applicable product shapes, and it is possible to appropriately apply degassing countermeasures to the occurrence of cavities, etc., which are expected in the casting method. Since it is provided outside, there is no dimensional restriction on the product.

Furthermore, by selecting a material such that each of the main mold parts 71, 91 is harder than each of the cassette bases 10, 36 in each of the cassette parts 72, 92, each main mold part 71 is brought into contact with each other at the time of setup. The portions 71 and 91 are not easily damaged, and hard settling due to firm fixing of the two and mold clamping in casting is also unlikely to occur. Therefore, a large number of cassette parts are repeatedly attached to the same main mold part alternately, removed and shared, and even when used for a long time, the main mold part has sufficient durability, so the mold per product The cost can be reduced, and the accuracy and quality of casting are not easily reduced.

(Embodiment 2) Embodiment 2 of the present invention will be described with reference to FIGS. FIG. 7 is an exploded perspective view showing the fixed mold in the die casting mold apparatus three-dimensionally as viewed from the mold mating surface, and FIG. 8 shows a main mold portion of the fixed mold.
FIG. 9A is a side view as viewed from the non-operation side, FIG. 9B is a plan view, and FIG. 9 is an enlarged view showing a portion C of FIG.

In the present embodiment, only the fixing means for fixing the cassette portion and the main mold portion is different from that of the first embodiment, and the other construction is the same. A description thereof will be omitted, and only different configurations will be described below. Since the fixing means is configured in the same manner in the fixed mold B and the movable mold A, the illustrated fixed mold will be described.

In the fixed mold B, fixing means for fixing the fixed cassette portion 92 to the fixed main mold portion 91 includes:
A push plate 51 forming a part of the x-direction reference surface step 31c and a part of the y-direction reference surface step 31d of the fixed side L-shape 31 is provided so as to be movable in the z direction, and as shown in FIG. Embodiment 1 is that the x-direction reference surface flange portion 36c and the y-direction reference surface flange portion 36d of the side cassette base 36 are sandwiched and fixed between the push plate 51 and the fixed-side abutment plate 32 in the first embodiment.
The load method for moving the push plate 51 in the z direction is different from that in the first embodiment.

First, the fixing means at the reference side step 31c in the x direction of the fixed-side L-shape 31 is shown in FIGS. 7 and 8A and FIG. 9 which is an enlarged view of a portion C of FIG. A description will be given based on this.

The push plate 51 is provided in the concave portion 58 formed in the x-direction abutting reference surface 31a of the fixed-side L-shape 31 at the x-direction reference surface step 31c.
1a, the surface 51a is made parallel to the x-direction reference surface step 31c, and the surface on the opposite side of the surface 51a is perpendicular to the x-direction contact reference surface 31a of the fixed-side L-shape 31 and is shaped. It has a block shape made of a smooth substantially rectangular parallelepiped and has a slope surface 51b having a gradient of two degrees with respect to the mating surface 59. The size between the surface 51a and the slope surface 51b is about half of the recess 58. I have. In the center of the push plate 51,
A through hole orthogonal to the mold mating surface 59 is formed, and the push plate 51 is inserted into the through hole from the surface 51 a side by a shoulder bolt 52 having a tip end screwed to the fixed-side L-shape 31.
Is connected to the fixed-side L-shape 31 so as not to fall off and to be movable in the z direction, and is movable in the z direction within a range where the spring 53 attached to the hole acts.

A recess 58 between the pressing plate 51 and the mold mating surface 59 has a surface parallel to the mold mating surface 59, and a surface opposite to this surface is formed in the same direction as the inclined surface 51b. A block-shaped slider 54 made of a smooth substantially rectangular parallelepiped and having a slope surface 54b having a gradient of two degrees is provided so as not to protrude from the x-direction abutment reference surface 31a.
The slider 54 has an escape slot 54 having a long diameter in the y direction for inserting the shoulder bolt 52 at the center thereof.
c is formed so as to be orthogonal to the mold mating surface 59, the shoulder bolt 52 is inserted into the long escape hole 54c, and the inclined surface 54b is brought into sliding contact with the inclined surface 51b of the push plate 51, so that the mold is mated with the push plate 51. Between the side surface of the concave portion 58 on the surface 59 side, it is movably sandwiched in the y direction. And the gradient surface 51b
And the contact surface of the inclined surface 54b has a direction of a gradient approaching the mold matching surface 59 in the y direction (the upward y direction in FIG. 9).

The slider 54 has a screw hole 51c at the top thereof which is orthogonal to the through hole 54c.
4c so as to penetrate between them in the y direction. In addition, above the screw hole 51, the fixed-side L-shaped 31 is y-shaped.
A through hole 57 penetrating in the direction is provided. And
The slider bolt 55 inserted from the outside of the fixed side L-shape 31 into the through hole 57 is screwed into the screw hole 51 c of the slider 54, and the slider 54 is rotated in the rotation direction of the slider bolt 55.
Is moved in the vertical direction in the y direction, and the push plate 51 can be moved in the z direction. The movement of the slider 54 in the y-direction increases the escape slot 54c in the y-direction so that the slider 54 can move with respect to the shoulder bolt 52, and moves the slope 54b of the slider 54 in the y-direction from the slope 51b of the push plate 51. In this case, the screw portions of the slider bolt 55 and the screw hole 51c have a sufficient stroke margin with respect to each other.

On the other hand, the fixing means at the y-direction reference surface step 31d of the fixed-side L-shape 31 is also the x-direction reference surface step 31c.
However, as shown in FIG. 7, the slider bolt 55 is inserted in the x direction,
The difference is that the push plate 51 is moved in the z direction by being screwed into the slider 54. Of course, the screw hole 51c of the slider 54
Are penetrated in the x direction, and the escape long hole 54c is also increased in the x direction.

Further, as shown in FIG. 7, auxiliary guide pins 56 are provided at two locations on the diagonal line on the mating surface of the fixed-side cassette portion 92, and one auxiliary guide pin 56 stands on the fixed-side cassette base 36. The other one is disposed upright on the fixed core 35.

Although not shown in the present embodiment,
Auxiliary guide bushes (not shown) are buried at two locations, one each on the movable cassette base 10 and the movable core 9, corresponding to the guide pins 56 on the diagonal line of the movable cassette section 72 shown in FIG. Then, when the fixed mold B and the movable mold A are mated, they can be fitted without being bitten by the guide pins 56.

In the die casting die apparatus of the present embodiment having the above configuration, the movable-side cassette portion 72 and the fixed-side cassette portion to the movable-side main mold portion 71 and the fixed-side main mold portion 91 attached to the casting machine. Operations relating to the attachment and removal of the 92 will be described below. In the following description, regarding the description regarding the movable mold A,
Please refer to FIG.

First, the work of attaching both cassette parts 72 and 92 will be described. In this operation, after attaching the movable-side main mold portion 71 and the fixed-side main mold portion 91 to the casting machine, the two main mold portions 71 and 91 are kept together without being opened. Here, the movable cassette portion 72 and the fixed cassette portion 92 are matched with each other by utilizing the fitting of an auxiliary guide bush (not shown) of the movable cassette portion 72 and the auxiliary guide pin 56 of the fixed cassette portion 92. The cassette units 72 and 92 are suspended by a crane or the like and lowered.

The step 81a of the cassette projecting portion 81 is connected to the step 5a of the main mold projecting portion 73 by the movable cassette base 10.
The x-direction reference surface flange portion 10c and the y-direction reference surface flange portion 10d have an x-direction reference surface step 1c and a y-direction reference surface step 1 of the movable L-shaped 1 to which the movable contact plate 2 is attached.
On the other hand, the x-direction reference surface flange portion 36c and the y-direction reference surface flange portion 36d of the fixed-side cassette base 36 are formed in the x-direction reference surface step 31c of the fixed-side L-shaped 31 to which the fixed-side abutment plate 32 is attached. The movable cassette unit 72 and the fixed cassette unit 92 are integrated by being fitted on the reference surface step 31d in the y-direction and further lowered, respectively, after being guided by the guide plates 13a and 13c. The two cassette parts 72 and 92 are arranged such that the movable-side cassette part 72 is on the y-direction abutment reference surface 1b of the movable-side L-shaped 1 and the fixed-side cassette part 92 is affixed on the fixed-side L-shaped 31 in the y-direction. It is placed on the reference surface 31b.

Thereafter, the movable cassette portion 72 is pulled in the movable L-shaped one direction by the pulling bolt 21c, and the x-direction reference surfaces 10a and y of the movable cassette base 10 are drawn.
The direction reference surface 10b is pressed against the x-direction abutment reference surface 1a and the y-direction abutment reference surface 1b of the movable-side L-shape 1, and the retractable-side cassette portion 92 is moved in the direction of the fixed-side L-shape 31 by the draw-in bolt 21f. Retraction, fixed side cassette base 3
6, the x-direction reference surface 36a and the y-direction reference surface 36b are pressed against the x-direction application reference surface 31a and the y-direction application reference surface 31b of the fixed L-shaped member 31.

In this state, the slider 54 is screwed into the slider 54 with a total of four slider bolts 55, two at the movable L-shaped 1 and two at the fixed L-shaped 31. Outside the molds 1 and 31 (slider bolt 55
Side), the sloping surface 54b of the slider 54 slides on the sloping surface 51b of the push plate 51, and presses the push plate 51 in the z direction by the generated drag.

Eventually, the push plate 51 is moved to the both cassette portions 7.
2,92 x-direction reference plane flanges 10c, 36c and y
Although it abuts against the direction reference surface brim portions 10d and 36d, the push plate 5
Reference numeral 1 denotes a firmly fixed x-direction reference plane flange 10c, 36c and y.
The direction reference surface brim portions 10d and 36d are
To fix the movable-side cassette portion 72 to the movable-side main mold portion 71 and the fixed-side cassette portion 92 to the fixed-side main mold portion 91, respectively.

In the work of removing the movable cassette portion 72 and the fixed cassette portion 92, first, the mold is closed, the tightening of the four slider bolts 55 is loosened, and the pulling force of the slider 54 is released. Then, the x-direction reference surface flanges 10c and 36c and the y-direction reference surface flanges 10d and 36d via the push plate 51 are opened. Also,
The pull-in bolt 21c of the movable-side main die 71 and the pull-in bolt 21f of the fixed-side main die 91 are removed, and the connecting rod 22 connecting the main die protrusion 73 and the cassette protrusion 81 is removed.

As described above, after all the members for fixing the movable-side cassette portion 72 and the fixed-side cassette portion 92 to the movable-side main mold portion 71 and the fixed-side main mold portion 91 are removed, both cassette portions 72 and 92 are integrated. And lifted off with a crane or the like, and separated from both main mold parts 71 and 91, respectively.

According to the present embodiment, first, the auxiliary guide pin 56 of the fixed cassette portion 92 and the auxiliary guide bush of the movable cassette portion 72 are used (fitted), so that the movable cassette portion 72 and the fixed Side cassette 9
2 can be integrated and transported.

The two cassette parts 72, 92 are connected to both main mold parts 71,
For fixing to and releasing from the 91, respectively, it is only necessary to tighten and release the slider bolt 55 from the upper surface and the side surface of each of the two L-shapes 1 and 31, and the action from the mold mating surface when the mold is opened. Becomes unnecessary.

Further, when both the cassette units 72 and 92 have a slide mechanism, it is possible to set up a complicated set of slide inserts as an external setup in advance, not on a casting machine.

As described above, in changing the mold,
Since the work of lifting and lowering the two cassette units 71 and 92 by a crane or the like can be reduced, the work of opening and closing the mold by the operation of the casting machine can be omitted, and even if a slide mechanism is provided, the setup work on the casting machine does not increase. Workability is high and setup time is suppressed.

Further, since there is no hole for a bolt on the mold mating surface of the mold, there is no problem of improper mold clamping due to accumulation of casting burrs in the casting machine, and the quality and casting workability are affected. I will not give.

(Embodiment 3) Embodiment 3 of the present invention will be described with reference to FIGS. FIG. 10 is a perspective view showing the movable mold in the die casting mold apparatus in a three-dimensional manner as viewed from the mold-matching surface. FIG. 10 is a pull-up type for fixing the movable cassette base to the movable L-shape. (A) is a plan view partially showing a toggle clamp, (b)
Is a front view.

In the present embodiment, the positioning means for positioning the cassette portion in an L-shape is different from the first and second embodiments, and the other configuration is the same. Therefore, description thereof will be omitted, and only different configurations will be described below. Since the positioning means is configured in the same manner in the movable mold A and the fixed mold B, the illustrated movable mold will be described.

That is, in the first and second embodiments, the pull-in bolt 21c is used to position the movable-side cassette 72 against the xy-direction abutment reference surfaces 1a and 1b of the movable-side L-shaped 1 and to position the movable-side cassette 72. Although the pull-in bolt 21f is used to position the fixed-side cassette portion 92 against the xy-direction contact reference surfaces 31a and 31b of the fixed-side L-shaped member 31, the pull-type toggle clamp 60 is used in the present embodiment.
Is used.

Therefore, in the present embodiment, in the movable mold A, the x-direction reference surface 10a and the y-direction reference surface 10b of the movable cassette base 10 provided in the first and second embodiments.
And a through hole provided at the boundary between the rising portion 1e of the movable-side L-shape 1 and the plane portion 1f for inserting the pull-in bolt 21c corresponding to the screw hole 11b. The hole 21b is not provided. Similarly,
Also in the fixed mold B, the screw hole 11d and the through hole 21e for the drawing bolt 21f are not provided.

The tension type toggle clamp 60 is shown in FIG.
As shown in the figure, the clamp body 61 and the latch plate 62
With a fixing member such as a bolt, the clamp body 61 is fixed to one of the two members to be clamped, and the latch plate 62 is fixed to the other member.

The clamp body 61 is provided with a lever 63 which can be tilted about a shaft 68 provided on the mounting member 67 and a lever 63 at a position about 1/3 of the length of the lever 63 from the shaft 68 in the horizontal direction. A rotating member 65 that is rotatably provided with both ends protruding through the
A pull-up U-link 64 is attached to both ends of the U-shape and can be locked to the latch plate 62.

The pulling U-link 64 is threaded at both ends thereof. The threaded portion penetrates a hole formed by projecting the rotating member 65 so as to be perpendicular to the axis. Is fixed to the rotating member 65 so as to be sandwiched between two nuts 66 screwed to the screw portion. The fixing position of the pulling U-link 64 to the rotating member 65 is determined by the screwing position of the nut 66 with respect to the threaded portion, and by adjusting the screwing position, the length of the pulling U-link 64 protruding forward of the lever 63 is adjusted. The distance between the clamp plate 61 and the latch plate 62 that is engaged with the pulling U-link 64 can be adjusted. In addition,
In FIG. 11A, the pulling U-link 64 and the rotating member 6
5 is partially omitted.

On the other hand, the latch plate 62 is disposed in front of the clamp body 61 at a position corresponding to the lever 63, and the notch 6 is formed in the opposite direction to the clamp body 61.
2a is formed, and the bottom of the pulling U-link 64 is locked in the notch 62a.

In the pull-type toggle clamp 60, the clamp body 61 is fixed to one member, and the latch plate 62 is pulled and fixed to a member to be clamped to one member (hereinafter referred to as a pull member).

In the above fixed state, the lever 63 of the clamp main body 61 is raised in the opening direction, which is the direction of the latch plate 62, about the shaft portion 68 to bring it into the state shown by the one-dot chain line in FIG. The bottom of the link 64 is located in front of the notch 62 a of the latch plate 62.

Then, the bottom of the pulling U-link 64 is hooked on the notch 62a of the latch plate 62, and the lever 63 is returned to the original position about the shaft 68 so that the pulling member is fixed to the clamp body 61. The clamp body 61 is pulled to the side, and is fixed in a state of being pressed against a member to which the clamp body 61 is fixed. If the rotating member 65 is rotated by the weight of the pulling U-link 64, when the lever 63 returns to the original state from the state shown by the dashed line, the pulling U-link 64
The second notch 62a is automatically hooked.

Next, the case of the present embodiment using the movable mold will be described with reference to FIG. The pull-type toggle clamp 60 is configured to move the movable-side cassette base 10 to the movable-side L-shaped 1 in the x-direction abutment reference surface 1 a and the y-direction abutment reference surface 1.
Two are mounted for positioning at b.

That is, the clamp body 61 is
The mounting member 67 is fixed to each of the upper surface 1h of the rising portion 1e of the character 1 and the side surface 1g of the flat portion 1f, which is the opposite side surface to which the guide plate 13b is mounted, by bolts or the like (not shown). Have been.

On the other hand, the latch plate 62 has a surface (upper surface) 1 facing the y-direction reference surface 10b of the movable cassette base 10.
0h, and 10g opposite to the x-direction reference surface 10a (side surface),
It is fixed by bolts or the like (not shown).

Also in the fixed mold, the pull-type toggle clamp 60 has the clamp body 61 on the fixed L-shaped mold 31, the latch plate 62 on the fixed cassette base 36, and the movable mold. Respectively.

In the die casting die apparatus of the present embodiment having the above configuration, the movable-side cassette portion 72 and the fixed-side cassette portion to the movable-side main mold portion 71 and the fixed-side main mold portion 91 attached to the casting machine. Operations relating to the attachment and removal of the 92 will be described below. In the following description, FIG. 3 is referred to for the description of the fixed mold.

First, the work of attaching both cassette parts 72 and 92 will be described. In this work, as in the first embodiment,
With the movable main mold 71 and the fixed main mold 91 attached to the casting machine, both main molds 71 and 91 are opened, and the movable cassette 72 and the fixed cassette 92 are suspended by a crane or the like. Are lowered from above the movable-side main mold 71 and the fixed-side main mold 91, respectively. Then, the y-direction reference surface 10b of the movable-side cassette base 10 abuts on the y-direction abutment reference surface 1b of the movable L-shaped 1 and the y-direction reference surface 36b of the fixed-side cassette base 36 contacts the y-direction reference surface 36b. The fixed-side L-shaped 31 is brought into contact with the y-direction contact reference surface 31b.

Here, in the movable mold, the notch 62a of the latch plate 62 fixed to the upper surface 10h of the movable cassette base 10 fits the upper surface 1 of the movable L-shaped mold 1.
Pulling U-link 6 of clamp body 61 fixed to h
4 and hook the lever 63 of the clamp body 61 to the shaft 6
Kill around 8. Then, the latch plate 62 is pulled toward the clamp body 61 by the pulling U-link 64.

Thus, the movable-side cassette base 10
Is pulled in the x direction of the rising portion 1 e of the fixed-side L-shaped 1, and the reference surface 10 in the x direction of the movable-side cassette base 10.
a and the movable-side L-shaped 1 in the x-direction contact reference surface 1a are in contact with each other. At this time, due to the toggle action of the clamp body 61,
The abutted x-direction reference surface 10a and the x-direction abutment reference surface 1a
Is firmly pressed.

After that, the notch 6 of the latch plate 62 fixed to the side face 10g of the movable cassette base 10
The tension U-link 64 of the clamp body 61 fixed to the side surface 1g of the movable L-shaped 1 is hooked on 2a, and the latch plate 62 is pulled toward the clamp body 61 by the tension U-link 64.

Accordingly, the movable cassette base 10
Is pulled in the y-direction of the flat part 1f of the movable-side L-shape 1, and the y-direction reference surface 10b of the movable-side cassette base 10
The fixed side L-shaped 1 abuts on the y-direction abutment reference surface 1b. At this time, the abutting y-direction reference surface 10b and the y-direction abutment reference surface 1b are firmly pressed by the toggle action of the clamp body 61.

Thus, the positioning of the movable-side cassette section 72 with respect to the movable-side main mold section 71 is completed, and the subsequent operations are the same as in the first embodiment. In the fixed-side mold, the positioning of the fixed-side cassette 92 with respect to the fixed-side main mold 91 is the same as that of the movable-side mold.

In the operation of removing the movable-side cassette section 72, first, similarly to the first embodiment, the bolt 20a of the fixing means is loosened to release the pressing on the push plate 18a, and the push plate 18a and the movable-side abutment are released. The fixing of the x-direction reference surface flange 10c and the y-direction reference surface flange 10d of the movable cassette base 10 held by the plate 2 is released.

The upper surface 1h and the side surface 1 of the movable L-shaped 1
raise the lever 63 of the clamp body 61 of FIG.
By separating the pull U-link 64 from the latch plate 62, the x-direction reference surface 10a and the y-direction reference surface 10b of the movable-side cassette base 10 and the x-direction abutment reference surfaces 1a and y of the movable L-shaped 1 are formed. Direction contact reference plane 1b
And release the crimp respectively.

Further, by removing the connecting rod 22 connecting the main mold projecting portion 73 and the cassette projecting portion 81, all the fixing of the movable cassette portion 72 to the movable main mold portion 71 is released. Subsequent operations are the same as in the first embodiment. The same applies to the fixed mold,
The description is omitted.

According to the present embodiment, in addition to the effects of the first embodiment, the positioning of the movable cassette 72 and the fixed cassette 92 with respect to the movable main mold 71 and the fixed main mold 91, respectively. Is a tension type toggle clamp 60
Can be completed only by the operation of hooking the pulling U-link 64 on the latch plate 62 and tilting the lever 63, and the pull-in bolt 21c below the movable-side main mold 71 and the fixed-side main mold 91 in the first embodiment. Workability can be improved compared to the work of tightening the pull-in bolt 21f.

In the first embodiment, the movable L-shaped mold 1 and the fixed L-shaped mold 31 are deformed by thermal expansion as the temperature of the mold increases due to casting, and the movable L The x-direction contact reference surface 1a and the y-direction contact reference surface 1b of the side L-shaped member 1 and the x-direction contact reference surface 31a and the y-direction contact reference surface 31b of the fixed L-shaped member 31 are each 90 ° or more. Due to the tendency to open, the adhesion between the movable-side main mold 71 and the movable-side cassette 72 and between the fixed-side main mold 91 and the fixed-side cassette 92 decreases, and the positioning accuracy may be impaired. In the form of L-shaped 1,
At the end of 31, the main mold parts 71, 91 and the cassette parts 72, 92
Casting while crimping the reference surfaces 1a and 10a, 1b and 10b, 31a and 36a, and 31b and 36b respectively, restrains the tendency to open by 90 ° or more and can maintain the positioning accuracy.

In this embodiment, the pull-type toggle clamp mechanism includes a movable main mold 71 and a fixed cassette 72, and a fixed main mold 91 and a movable cassette 92.
Of the main mold part 7
1, 91 in the x and y directions, respectively.
If the means for pulling the cassette parts 72, 92 in the vertical direction with respect to the a, 31a, 36a is not limited to the above-described configuration, the mechanism and the installation location are not limited to manual, but also pneumatic, It may be based on hydraulic pressure or the like, and even with this configuration, the same operation as in the present embodiment,
The effect can be obtained.

[0165]

As described above, according to the first aspect of the present invention,
According to the die-casting die apparatus, the change in the product to be formed is changed only by replacing the cassette part with good workability, so that the die manufacturing cost for each product can be kept low and the production of casting Can be enhanced. In addition, the position accuracy of the cavity between the movable mold and the fixed mold is maintained without variation, and even when a gas release mechanism such as a slide and a chill vent is appropriately provided, the precision, shape, dimensions, and quality of the product to be cast. Etc. can be widely applied.

According to the die-casting die apparatus of the second aspect of the present invention, in addition to the effect of the first aspect, it is possible to reduce the lifting and lowering work of the cassette part when setting up the die, and to open and close the die. Since work can be omitted, workability can be improved.

According to the die-casting die apparatus of the third aspect of the present invention, the material is selected by designating the hardness of the members of the main die portion and the cassette portion, and is commonly used for a long period of use involving repeated setup. To prevent damage or deterioration of the main mold part, maintain the accuracy and quality of casting at the initial stage for a long time, share the main mold part with many products, and keep the mold cost for each product low. it can.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a movable mold according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view showing a movable mold according to the first embodiment of the present invention.

FIG. 3 is an exploded perspective view showing the fixed mold according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view illustrating a fixed-side mold according to the first embodiment of the present invention.

FIG. 5 is a perspective view showing a movable cassette unit according to the first embodiment of the present invention.

FIG. 6 is a perspective view showing a fixed cassette unit according to the first embodiment of the present invention.

FIG. 7 is an exploded perspective view showing a fixed mold according to a second embodiment of the present invention.

FIG. 8 shows a fixed-side main mold part according to the second embodiment of the present invention;
(A) is a plan view and (b) is a side view.

FIG. 9 is an enlarged view showing part C of FIG.

FIG. 10 is a perspective view showing a movable mold according to a third embodiment of the present invention.

11A and 11B show a pull-type toggle clamp provided in the third embodiment of the present invention, wherein FIG. 11A is a plan view and FIG. 11B is a front view.

FIG. 12 is a perspective view showing a movable mold and a fixed mold of a conventional cassette-type mold apparatus for die casting.

[Explanation of symbols]

Reference Signs List 1 movable mold L-shaped (movable L-shaped) 1a, 31a x-direction reference plane 1b, 31b y-direction reference plane 1c, 31c x-direction reference plane step 1d, 31d y-direction reference plane step 2 Movable mold contact plate (movable contact plate) 9 Movable mold core (movable core) 9a, 10a, 35a, 36a Reference plane in x direction 9b, 10b, 35b, 36by Reference plane in y direction 10 Movable mold cassette base (Movable cassette base) 10c, 36c X-direction reference surface flange 10d, 36dy Y-direction reference surface flange 18a, 18b, 51 Push plate 19a, 19b Shoulder bolt 20a, 20c Bolt 21c, 31f Pull-in bolt 31 Fixed mold L-shape (fixed L-shaped) 32 Fixed mold abutment plate (fixed abutment plate) 35 Fixed mold core (fixed core) 36 Fixed Side mold Set base (fixed side cassette base) 40 Chill block A 41 Chill block B 42 Slide insert 54 Slider 55 Slider bolt 60 Pull type toggle clamp 61 Clamp body 62 Latch plate 71 Movable main mold 72 Movable cassette Part 73 Main mold protrusion part 91 Fixed main mold part 92 Fixed side cassette part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Koji Kuroyama, Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Inventor Dai Yamazaki 2-4-2-3, Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (3)

[Claims] 1. A fixed mold and a movable mold that can be separated from and separated from each other and are composed of a main mold attached to a molding machine and a cassette attached to the main mold to form a cavity for product molding. In a die casting die apparatus, an L-shaped main mold portion, a cassette portion including a core and a cassette base for holding the core, and the cassette portion is at least opened in a mold opening direction with respect to the main mold portion. A die-casting die apparatus, comprising: positioning means for positioning in a direction perpendicular to the direction; and fixing means for fixing the cassette portion to the main die portion. 2. The die-casting die apparatus according to claim 1, wherein said fixing means is operable in a mold-clamped state. 3. The main mold part, wherein at least a mold mating surface and a surface in contact with the cassette part are made of a material having a higher hardness than the cassette base.
Or the die apparatus for die casting according to 2.