JPH09122871A - Die for casting capable of change of insert - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change an insert and to produce a die casting product having good working precision. SOLUTION: A movable die 1 is provided with a movable base die 4 providing a recessed part 4a and groove hole parts on both side surfaces of the recessed part 4a, a male die insert 8 having projecting parts on both side surfaces and a holding member 31. The male die insert 8 is incorporated into the recessed part 4a in the movable base die 4 by fitting the projecting parts into the groove hole parts and fixed with the holding member 31 from the upper part. A fixed die 3 is provided with a fixed base die 9 providing a recessed part 9a and groove hole parts on both side surfaces of the recessed part 9a, a female die insert 10 having projecting parts on both side surfaces and a holding member 71. Then, the female die insert 10 is incorporated into the recessed part 9a in the fixed base die 9 by fitting the projecting parts into the groove hole parts and fixed with the holding member 71 from the upper part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die casting mold, and in particular, a die casting molded product which makes it possible to remarkably facilitate the replacement of the inserts, keeps the manufacturing cost of the mold low, and has a high processing accuracy. The present invention relates to a replaceable die for die casting.

[0002]

2. Description of the Related Art Die casting, in which molten metal such as zinc or aluminum is poured into a mold to shape it, has a high production speed, and a die cast molded product produced by die casting has good dimensional accuracy. Widely used as various component products such as aluminum wheels.

In recent years, in order to efficiently produce high-mix low-volume die-cast molded products, mold replacement is facilitated, the mold replacement time is shortened to improve the operating rate of the molding machine, and the mold replacement is labor-saving. Also, as a measure for reducing the cost of die-cast molded products, a die-casting die in which a mother die of the die is standardized and a nest is exchanged has been proposed. Conventionally, this type of die casting mold 101 includes a movable mold 102 and a fixed mold 103, as shown in FIG.
2 is a standardized and has a movable die 104 having an accommodating portion 104a for accommodating the male insert 108, a die block 107 having an ejector base 106 having an ejector pin 105 incorporated therein, and accommodating the movable die 104. Part 104
a and a male insert 108 having a male engraving surface 108a provided on the front surface 108s1. The fixed mold 103 is standardized and is inserted into the female mold 108. Fixed mold master 109 having a housing 109a for housing the child 110, and housing 1 for the fixed master 109
09a, which is provided so as to be replaceable and has a female engraving surface (not shown) formed thereon, and a fixed mother die 10.
A male mold formed on the male mold insert 108 when the movable mold 2 and the fixed mold 3 are closed and are connected to a molten metal supply means such as a casting machine (not shown). Engraving surface 10
8a and female engraving surface 110 formed on female die insert 110
A material supply passage 112 for supplying molten metal such as molten zinc or aluminum is provided in a space (cavity) formed between the material and a.

Reference numeral 113 in the drawing denotes a cooling pipe for supplying and circulating a coolant for cooling the temperature of the male insert 108, and 114 denotes a space for the molten metal supplied from the material supply passage 112 (cavity). ), 115 is a pool for receiving the molten metal that overflows the space (cavity), 116 is a male insert 108 formed with an ejector pin insertion hole for inserting the ejector pin 105, 117 is a mold 1 for fixing the ejector plate 106.
In order to push out in the 03 direction, a push-out plate 117a movably provided in the fixed mold 103 direction is provided in the push-out plate 117, and a protrusion having an upper opening for accommodating the ejector plate 106 so that the ejector plate 106 can be taken in and out from above. ,
Reference numerals 118 respectively denote cooling pipes for supplying and circulating a coolant for cooling the temperature of the female insert 110.

When manufacturing a die-cast molded product using this mold 101, first, the movable mold die 104 and the fixed mold die 109 are respectively moved to a movable die plate of a casting machine (not shown). (Not shown) and a fixed die plate (not shown). Next, the cooling melt pipe 113 is connected to the back surface of the male mold insert 108, and then the ejector pin 105 is inserted into the ejector pin insertion hole 116 from the rear surface side of the male mold insert 108 to insert the male mold insert 108. The ejector base 106 is attached to the child 108.

Next, the male insert 108 to which the ejector base 106 is attached on the back surface is housed in the movable mold 104 and the die block 107. Also, the female insert 11
After connecting the cooling pipe to the back of 0, female insert 11
0 is accommodated in the fixed mold master 109, and then the material supply passage 112 of the female insert 110 is connected to the material supply passage 122 of the casting machine (not shown).

Next, the movable die plate (not shown) of the casting machine (not shown) is replaced with the fixed die plate (not shown).
To the side, the movable mold 102 and the fixed mold 103 are closed, and then the molten metal is supplied from the molten metal inlet hole 123, and the male engraved surface 108a of the male die insert 108 and the female engraved surface 108a. The molten metal is supplied into a space (cavity) (not shown) formed between the mold insert 110 and the female engraved surface 110a to manufacture a die cast product.

By the way, when a die-cast molded product different from the above is manufactured, the movable mold 102 and the fixed mold 1 are manufactured.
03 is removed from each of the movable die plate (not shown) and the fixed die plate (not shown) of the casting machine (not shown). Next, after removing the ejector plate 106 and the cooling pipe 113 from the male mold insert 108 and removing the male mold insert 108 from the movable mold 104 in the direction of arrow A, another male mold insert is taken in the direction of arrow B. Is attached to the movable mother die 104, and an ejector plate and a cooling pipe are attached to the male mold insert.

Further, the cooling pipe 118 is attached to the female insert 11.
0, and the male mold insert 110 is removed from the fixed mold master 109 in the direction of arrow B, and another female mold insert is attached to the fixed mold mold 109 in the direction of arrow A for cooling the female mold insert. Attach the pipe 118. Next, prepare new male and female nests. Then, after attaching the movable die 102 and the fixed die 103 to the movable die plate (not shown) of the casting machine (not shown) and the fixed die plate (not shown), a new male die is attached. After each of the mold insert and the female insert is housed in the movable mold 102 and the fixed mold 103, a die-cast molded product is manufactured by the same procedure as described above.

[0010]

However, in a mold such as the conventional die casting mold 101, as shown in FIG. 8, each of the accommodating portions 104a and 109a has a movable mold 104 and a fixed mold. Each of the mother dies 109 is formed by hollowing out. Therefore, when replacing the male insert 108 and the female insert 110, as described above,
For each of the movable mold 104 and the fixed mold 109,
In the direction shown by the arrows A and B in FIG.
8. The female insert 110 must be removed or attached, and the lifting and suspending means of a crane or the like cannot be used. Moreover, the male insert 108 and the female insert 110 can be used.
Since it is a heavy object, it is difficult to replace the male insert 108 and the female insert 110 in the directions shown by the arrows A and B, and there is a problem that it takes time to replace the insert.

Further, since the ejector plate 106 is fitted into the push-out plate 117 exactly, the ejector plate 106 is pushed out.
There was a problem that it was difficult to remove and install from the. Furthermore, in order to prevent rattling of the male insert 108 and the female insert 110, the movable mold 104 and the fixed mold 1
An inner peripheral surface forming the accommodating portions 104a and 109a of 09,
There is also a problem that the manufacturing cost of the mold is increased because the male mold 108 and the female mold 110 must be precisely cut and polished so that they fit exactly with the outer peripheral surfaces. .

[0012] As described above, the time required for exchanging the male and female mold inserts and the high manufacturing cost of the mold rebound to the manufacturing cost of the die-cast molded product, resulting in a die-cast molded product. However, there is a problem that the manufacturing cost cannot be reduced. In addition, it is necessary to perform the mold nest replacement work in a short time in order to keep the manufacturing cost of the die-cast molded product low, and in a harsh working environment where the mold temperature is high. Therefore, it has been desired for many years to develop a mold that allows an operator to easily replace the inserts in a short time.

The present invention has been made in order to solve the above problems, and it is possible to remarkably facilitate the replacement of the insert, and to keep the manufacturing cost of the mold low, and further, It is an object of the present invention to provide a die casting mold in which a child can be replaced.

[0014]

According to a first aspect of the present invention, there is provided a replaceable die for die casting mold, comprising: a movable die having a die block incorporating an ejector base having an ejector pin connected to a rear side thereof; A movable mold is a molding mold in which a fixed mold having a material supply path connected to a molten metal supply means of a casting machine is disposed so as to face each other, and the movable mold has a concave portion having an opening at an upper side and both side surfaces of the concave portion. And a male mold having a predetermined shape on the front side, and a movable die having a groove provided on the both sides, and projecting portions on both sides which fit into the groove provided on both sides of the recess of the movable mother die. A male mold insert having a mold engraving surface and a pressing member are provided. The male mold insert is a movable mold in which a protruding portion is fitted to groove slots provided on both side surfaces of a concave portion of the movable mold die. The male die, which is housed in the concave portion of the master mold and further accommodated in the concave portion of the movable mold, is moved upward. The fixed mold has a structure in which it is pressed and fixed by a pressing member, and a fixed mold includes a concave mold having an opening at the upper side, and a groove mold provided on both side surfaces of the concave mold, and a fixed mold mold. A female insert having projections on both sides that fit into groove holes provided on both sides of the concave portion of the mold and having a male engraving surface of a predetermined shape on the front surface; and a pressing member,
The female die inserter is accommodated in the recess of the fixed mold by fitting the protrusions into the groove holes provided on both sides of the recess of the fixed mold, and is further inserted in the recess of the fixed mold. It has a structure in which the female insert accommodated therein is fixed by being pressed by a pressing member from above.

In the die-casting die with replaceable inserts according to claim 1, a movable die having a recess having an opening at the upper side and a fixed die having a recess having an opening at the upper side. Since and are used, when replacing the male and female inserts, the male insert can be pulled up and removed from the movable mold, and the male insert can be removed from above the movable mold. By lowering, the male mold insert can be attached to the movable mold, the female mold insert can be pulled up and removed from the fixed mold, and the female mold insert can be removed from above the fixed mold. By lowering, the female mold insert can be attached to the fixed mold.

In this mold, the male and female inserts can be replaced in the vertical direction, so that it can be carried out by means of hoisting and lowering means such as a crane, so that the male and female inserts can be replaced. The replacement work can be performed extremely easily.
Also, because the male insert can be replaced by moving it vertically, the male insert and ejector plate can both be replaced in the vertical direction, so the male insert and ejector plate can be replaced at the same time. The male / female inserts can be replaced very easily.

Moreover, the groove portions are provided on both side surfaces forming the recessed portion having the opening above the movable die and the both sides of the male mold insert are provided on both sides of the recessed portion of the movable die. Providing a protruding portion that fits into the groove hole portion, the protruding portion is fitted into the groove hole portion provided on both side surfaces of the concave portion of the movable mold, and is housed.
The male die housed in the recess of the movable die is pressed from above to be fixed, and a pressing member is fitted and fixed.
Further, the groove portions are provided on both side surfaces of the fixed die master forming the concave portion having the opening, and the groove hole portions are provided on both side surfaces of the female die insert on both side surfaces of the concave portion of the fixed die master. A protrusion that fits in the housing, and the protrusion is fitted into the groove holes provided on both side surfaces of the concave portion of the fixed mold to accommodate the female mold. Since the structure is such that the pressing member that presses and fixes the child from above is fitted and fixed, the male insert is firmly attached to the movable mold and the female insert is firmly fixed. Since it is attached to the mother die, the rattling of the male and female mold inserts during die casting is significantly reduced, so the die cast molded product produced by this die has excellent processing accuracy. ing.

Further, depending on the die-cast molded product, it is possible to deal with it by simply exchanging the male or female insert and the ejector base. Therefore, the outer frame of the male or female insert (movable mold and fixed mold Since the mold) can be shared, the manufacturing cost of the mold can be kept low. Therefore, this mold is particularly useful for producing a small amount of a wide variety of molded products.

According to a second aspect of the present invention, there is provided a replaceable die-casting die according to the first aspect of the present invention, wherein the interchangeable die-casting die has a male insert and a female insert. On each of both side surfaces, a pair of protrusions provided so that their respective center positions are not vertically aligned are provided so as to project vertically, and the recesses formed in the movable mold die and the fixed mold die are formed. The groove holes on both sides have a structure in which taper fixing portions corresponding to a pair of protrusions formed on both side surfaces of the male insert and the female insert are formed correspondingly. .

In the die for die casting with replaceable inserts according to the second aspect, the center positions of the male insert and the female insert are not aligned vertically on each side. A pair of protrusions is provided on the upper and lower sides so as to project, and the groove holes on both sides of the concave portion formed on each of the movable mold die and the fixed mold die are provided on both sides of the male insert and the female insert. Since the taper fixing portion corresponding to each of the set of protrusions formed on each of the surfaces is formed correspondingly, the male mold insert and the female mold insert are formed in the movable mold mold and the fixed mold mold, respectively. When being housed in each of the molds, first, the lower projections of the pair of projections can be easily fitted into the slot portions on both side surfaces of the recesses formed in each of the movable mold die and the fixed mold die. Moreover, each of the male mold insert and the female mold insert is attached to each of the movable mold mold and the fixed mold mold,
Since the groove holes on both side surfaces of the concave portion provided in each of the movable mold die and the fixed mold die are accommodated as guides, the male mold die and the female mold die are respectively accommodated in the movable mold die and the fixed mold die. The accommodation work for accommodating each of the mother dies becomes easy.

Moreover, the movable type mold and the fixed type mold are each provided with a taper fixing portion corresponding to each of a pair of projections formed on both side surfaces of the male mold insert and the female mold insert. Since the male mold and the movable mold and the female mold and the fixed mold are fitted to each other, the projections on the upper side of the pair of projections and the corresponding taper fixing portions and Since the lower protrusion and the taper fixing part corresponding to this are fixed to each other, rattling does not easily occur in the male insert and the female insert, and the male insert and the female insert can be used during die casting. Since rattling does not easily occur, it is possible to make die-cast products with excellent processing accuracy.

Further, in each of the movable mold die and the fixed mold die, only a taper fixing portion corresponding to each of a pair of protrusions formed on both side surfaces of the male insert and the female insert is machined. Since it can be formed with high precision, the manufacturing cost of the mold can be kept low. The insertable die-casting die according to claim 3 is an opening of each of the movable die mold and the fixed die of the insertable die-casting die according to claim 1. Grooves formed on both sides of the section are tapered alignment grooves that are formed in a downwardly tapered shape, and are formed on both sides of the male and female inserts. The protruding portion is formed in a tapered shape corresponding to the tapered alignment groove.

According to a third aspect of the present invention, in the die-casting die with replaceable inserts, a groove portion formed on both side surfaces of a concave portion having an opening above each of the movable mold die and the fixed mold die. To the shape of a tapered alignment groove that is formed in a downwardly tapered shape, and align the protrusions formed on both side surfaces of the male insert and the female insert with the tapered alignment groove. The taper-shaped protruding structure corresponding to the groove allows the male mold insert and the female mold insert to be housed in the movable mold mold and the fixed mold mold, respectively. It is easy to fit each protrusion of the insert into the slot of the movable mold and the fixed mold, and the protrusion of each of the male insert and the female insert is movable and fixed. Since it is easy to pull out the slot of the mother die in the upward direction, it is easy to replace the male and female inserts.

Moreover, the male mold insert and the female mold insert are formed on both sides of the movable die and the fixed die in correspondence with the tapered alignment grooves formed on the opposite sides of the openings. Since the protruding part with the tapered protruding structure is formed on the
When the male insert and the movable insert, and the female insert and the fixed insert are fitted to each other, rattling hardly occurs in the male insert and the female insert. Therefore, rattling of the male and female inserts is unlikely to occur during die casting, so that a die-cast product with excellent processing accuracy can be produced.

According to a fourth aspect of the present invention, there is provided a replaceable die casting die die according to the first, second or third aspect of the interchangeable die casting die block, wherein the die block is a fixed die. It has an extruding plate that is movable in the mold direction, and the extruding plate is formed with a fitting protrusion that is open at the top to accommodate the ejector base so that it can be taken in and out from above. The housed ejector base is fixed by sandwiching a wedge-shaped member having two tapered leg portions that are tapered downward in a gap formed between the ejector base and the fitting protrusion. .

In the die for die casting with replaceable insert according to claim 4, a fitting projection larger than the size of the ejector base is formed on the extrusion plate, and the fitting projection formed on the extrusion plate is provided with the ejector base. A structure in which a wedge-shaped member having tapered taper legs is sandwiched in the gap created between the ejector base and the fitting projection after it is housed from above and the ejector base is fixed to the push-out plate. Therefore, the ejector base can be easily housed in the fitting protrusion of the extrusion plate, and when the wedge-shaped member is removed from the gap formed between the ejector base and the fitting groove, the ejector base and the extrusion plate are formed. Since a gap is formed between the fitting projection and the fitting projection, the ejector base can be easily removed above the fitting projection formed on the pushing plate.

Moreover, at the time of die casting, since the push-out plate and the ejector base are integrated by the wedge-shaped member, a predetermined ejecting effect can be obtained.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail based on the embodiments of the invention. FIG.
FIG. 2 is a perspective view schematically showing the overall structure of a die casting mold as an example of an embodiment of the present invention, and FIG.
1 is an exploded perspective view of a movable die of the die-casting die 1 shown in FIG. 1, and FIG. 3 is an exploded perspective view of a fixed die of the die-casting die 1 shown in FIG.

The die casting die 1 is used as a movable die 2 in which a die block 7 incorporating an ejector base 6 having an ejector pin 5 is connected to the rear and a molten metal supply means of a casting machine (not shown). The fixed die 3 having the material supply path 12 connected thereto is provided. More specifically, the movable mold 2 is standardized and has a concave portion (accommodation portion) 4a for accommodating the male insert 8.
The die block 7 having the ejector base 6 having the ejector pins 5 and the recess (accommodation portion) 4a of the movable mold 4 are replaceably provided, and the front surface 8s1 is provided with the male engraving surface 8a. Male insert 8 and movable master 4
Holding member 31 for pressing and fixing the male mold insert 8 accommodated in the concave portion (accommodation part) 4a of the wedge, and the wedge member 4
1, a plurality of bolts 51 for fixing the pressing member 31 to the movable mold 4, and a plurality of lock pins (lock pins 61 shown in FIG. 6).

A projecting wall portion 4d for preventing lateral movement of the male die insert 8 housed in the mother die 4 is formed behind the movable mother die 4 by cutting. Further, the concave portion (accommodation portion) 4a of the movable mold 4 has an opening 4h upward.
And both side surfaces 4s, 4s of the concave portion (accommodation portion) 4a.
In addition, it has a shape having groove holes 4b, 4b.

Further, a plurality of bolt holes 52 for fixing a plurality of bolts 51 and a lock pin insertion hole 62 for fitting and fixing a plurality of lock pins 61 are formed on the upper surface of the movable mother die 4. Is provided. Both sides 8s of male insert 8
A protrusion 21 is provided on each of 2 and 8 s 2.

Then, the male mold insert 8 is fitted with the projecting portion 21 into the groove holes 4b and 4b provided on both side surfaces of the concave portion (accommodation portion) 4a of the movable mold die 4 to form the movable mold mother die 4. It is adapted to be accommodated in the recess (accommodation portion) 4a of the mold 4. Further, an ejector plate 6 having an ejector pin 5 and a cooling pipe 13 for supplying and circulating a coolant for cooling the male insert 8 are attached to the rear surface side of the male insert 8.

At the center of the upper surface of the male insert 8, a ring body 23a for lifting a crane or hooking a hook (not shown) of a hanging means is attached to the upper part, and a shaft below the ring 23a is attached. A hole 24 for attaching the hooking member 23 having a screw thread 23c is provided at the lower end of 23b. Here, based on FIG. 2 and FIG. 4, the male mold insert 8 is housed in the recess (accommodation part) 4a of the movable mold 4 or is removed from the recess (accommodation part) 4a of the movable mold 4. A description will be given of the operating principle of the case.

In this example, the protrusion 21 of the male insert 8 is
On both side surfaces 8s2, 8s2 of the male insert 8, it is constituted by a pair of protrusions 21a, 21b provided so as to project vertically, and one set of protrusions 21a, 21b, as shown in the figure, The respective center positions C21a and C21b are provided so as not to be vertically aligned. More specifically, the protrusion 21a has a front surface 8s of the male insert 8 as compared with the protrusion 21b.
It is provided so as to be close to 1.

Further, the concave portion (accommodation portion) 4a of the movable mold 4 is formed.
As shown in FIG. 4, the shape of the slot portions 4b, 4b of the pair of projections 2 formed on each of both side surfaces 8s2 of the male insert 8 is two.
Two taper fixing parts 4T corresponding to each of 1a and 21b
1 and 4T2 are formed. In this example, the first forming surface 4bs1 on the side farther than the front surface 4s1 in the groove portion 4b of the movable mold 4 is formed linearly, and is formed on the second forming surface 4bs2 on the front surface 4s1 side. The two taper fixing portions 4T1 and 4T2 are formed. More specifically, the taper fixing portion 4T1 is inclined downward from above the movable mold die 4 and away from the front surface 4s1 side of the movable mold die 4, and the taper fixing portion 4T2 is It is formed so as to be inclined from the lower end e2 of the forming surface portion P4bs2 linearly formed downward from the lower end e1 of 4T1 toward the lower side from the front surface 4s1 side of the movable mold die 4.

First forming surface 4bs1 and second forming surface 4b
The distance w from s2 is formed sufficiently wider than the diameter of the protrusion 21b. Then, the taper fixing portions 4T1 and 4T
When the male mold insert 8 is housed in a predetermined position of the recess (accommodating part) 4a of the movable mother die 4, the outer periphery of the protrusion 21a abuts on the taper fixing part 4T1. 4T
It is formed by precision processing so that the outer periphery of the protrusion 21a comes into contact with 2.

Therefore, when the male insert 8 is housed in a predetermined position of the concave portion (accommodation portion) 4a of the movable mother die 4, the weight of the male insert 8, the projection 21b and the taper fixing portion 4T2. It is firmly fixed by abutting and abutting the protrusion 21a and the taper fixing portion 4T1 and fitting the protrusion wall 4d and the male insert 8. In addition, in FIG. 4, the male insert 8 shown by an imaginary line is a recess (accommodation portion) 4 of the movable mother die 4 in the male insert 8.
The state where it was accommodated in the predetermined position of a is shown.

In this structure, the opening 4h of the slot 4b on the upper surface of the movable mold 4 is sufficiently wider than the diameter of the protrusion 21b of the male insert 8. Mold insert 8
From above, in the direction indicated by arrow E in FIG.
It is easy to store it in the concave portion (accommodating portion) 4a of the movable mold 4 and, on the contrary, when removing the male mold insert 8 from the concave portion (accommodating portion) 4a of the movable mold 4, the slot portion 4b is used. Since the male insert 8 is gradually widened as it goes up, the male mold insert 8 can be easily removed from the recess (accommodation part) 4a of the movable mold 4 by being lifted up.

Here, the movable mold 4 and the male insert 8 are used here.
The operating principle of was explained, but in this example,
Since the operation principle of the fixed mold 9 and the female insert 10 is similar, the description thereof is omitted. As shown in FIG. 2, the pressing member 31 has a substantially T shape, and the protruding portion 31a thereof is just fitted into the concave portion 4a of the movable mold 4, and the upper surface thereof is After pressing the male mold insert 8 accommodated in the recess (accommodation part) 4a of the movable mold 4 from above, the plurality of bolts 51 and the plurality of lock pins 61 are used to hold the pressing member 31 and the movable mold. Plural bolt holes 53 for fixing the mother die 4 and plural lock pin insertion holes 6
3 and 3 are provided. In addition, a ring body 33a for lifting a crane or hooking a hooking claw (not shown) of a hanging means is attached to the upper part in the central part of the upper surface, and a ring body 33a below the lower shaft (not shown) is attached. A hole 34 for attaching the hooking member 33 having a thread (not shown) formed at the tip is provided.

The wedge-shaped member 41 has a structure having two downwardly tapered tapered legs 42, 42. Further, a ring body 43a for lifting a crane or hooking a hooking claw (not shown) of a hanging means is attached to the upper surface of the upper surface thereof, and a lower end portion of a shaft (not shown) below the ring body 43a. A hole 44 for mounting the hooking member 43 having a screw thread (not shown) is provided (not shown).

The die block 7 has two extruding plates 81 and 82 which are provided so as to be movable in the direction of the fixed mold 3. The ejecting plate 82 allows the ejector base 6 to be taken in and out from above. A pair of substantially L-shaped fitting protrusions 82a, 82a, which are open at the top to be accommodated, are formed. Since the height H of the fitting protrusions 82a, 82a is formed to be larger than the thickness d of the ejector base 6,
As shown in FIG. 5, the ejector base 6 is provided with a pair of substantially L-shaped fitting protrusions 82 a formed on the pushing plate 82.
When housed in the 82a, a gap S is formed between the ejector base 6 and the pair of substantially L-shaped fitting protrusions 82a, 82a. In this example, each of the gaps S has a width of 2 mm. Tapered legs 42 that taper to the bottom of the book,
The ejector plate 6 is fixed to the push-out plate 82 by sandwiching each of them 42.

On the other hand, the fixed mold 3 is, as shown in FIGS. 1 and 3, a fixed mold master 9 having a standardized recess (accommodation part) 9a for accommodating the female insert 10, and a fixed mold mother. Type 9
Female insert 1 that is replaceably provided in the concave portion (accommodation portion) 9a of the and has a female engraved surface 10a on the front surface 10s1.
0 and a pressing member 7 for pressing and fixing the female insert 10 housed in the recess (accommodation part) 9a of the fixed mold 9 from above.
1, a plurality of bolts 51 for fixing the pressing member 71 to the movable mold 4 and a plurality of lock pins 61.

As shown in the figure, the concave portion (accommodating portion) 9a of the fixed mold 9 has an opening 9h at the upper side, and both side surfaces 9s and 9s of the concave portion (accommodating portion) 9a are provided with groove holes. 9b, 9
The shape has b. Further, behind the fixed mold 9, a projection wall 9d for preventing lateral movement of the female insert 10 housed in the mold 9 is formed by cutting.

Further, a plurality of bolt holes 52 for fixing a plurality of bolts 51 and a lock pin insertion hole 62 for fitting and fixing a plurality of lock pins 61 are formed on the upper surface of the fixed mold 9. Is provided. Both sides 1 of female insert 10
The protrusion 21 (21a, 2a, 2) is provided on each of 0s2 and 10s2.
1b) is provided.

The female insert 10 has a protruding portion 21.
(21a, 21b) is a recess (accommodation portion) 9 of the fixed mold 9
It is adapted to be fitted in the groove holes 9b, 9b provided on both side surfaces of a and to be accommodated in the concave portion (accommodation portion) 9a of the fixed mold die 9. Further, a cooling pipe 13 for supplying and circulating a coolant for cooling the female insert 10 is attached to the back side of the female insert 10.

In addition, a ring body 13a for hanging a crane or hooking a hook (not shown) of a hanging means is attached to the upper part of the center of the upper surface of the female insert 10, and the shaft below the ring 13a is attached. A hole 14 for mounting the hooking member 13 having a thread 13c is provided at the lower end of 13b. The pressing member 71 has a substantially T-shape as shown in the drawing, and the protruding portion 71a thereof fits exactly into the concave portion 9a of the fixed mold 9. Further, on the upper surface thereof, after pressing the female mold insert 10 housed in the recess (accommodation part) 9a of the fixed mold 9 from above, a plurality of bolts 51 and a plurality of lock pins 61 are used. A plurality of bolt holes 53 for fixing the pressing member 71 and the fixed mold 9 and a plurality of lock pin insertion holes 63 are provided. In addition, a ring body 73a for lifting a crane or hooking a hooking claw (not shown) of a hanging means is attached to the upper part in the central part of the upper surface, and a ring body 73a under the lower shaft (not shown) is attached. A hole 34 for attaching a hooking member 73 having a thread (not shown) formed at its tip is provided.

In FIG. 1, reference numeral 14 denotes the molten metal supplied from the material supply path 12 when the movable mold 2 and the fixed mold 3 are closed, and the male engraved surface 8a of the male insert 8. And female nest 10
Of the female mold engraved surface 10a to the space (cavity) is formed, 15 is a pool for receiving the molten metal overflowing the space (cavity), 16 is the male mold insert 8 The ejector pin insertion holes that are formed and into which the ejector pins 5 are inserted are shown, and in FIG. 3, 19 is a gate, respectively.

When manufacturing a die-cast molded product using this mold 1, first, each of the movable die 4 and the fixed die 9 is moved to a movable die plate of a casting machine (not shown). (Not shown) and a fixed die plate (not shown). Next, the ejector pin insertion hole 16 is inserted from the rear side of the male insert 8 whose cooling rear surface is connected to the cooling melt pipe 13.
The ejector pin 5 is inserted into and the ejector base 6 is attached to the male insert 8.

Next, after the hook member 23 is screwed into the hole 24 of the male insert 8 having the ejector base 6 attached to the rear surface, the ring body 23a of the hook member 23 is lifted or hung by a crane or the like. The male insert 8 having the ejector base 6 attached to the back is hooked on the hooking claw (not shown) of the means (not shown) in the direction indicated by an arrow C in FIG. Mold 4 and die block 7
Housed within.

More specifically, in this step, the male mold insert 8 is housed in the recess (accommodating part) 4a of the movable mother die 4, and the ejector base 6 is formed into a pair of substantially L-shaped push plates 82. Are accommodated in the fitting protrusions 82a, 82a. Then, the hook member 23 is removed from the male insert 8. Next, the ring body 43a of the hooking member 43 screwed to the wedge-shaped member 41 is lifted up by a crane or the like and hooked on a hooking claw (not shown) of a hanging means (not shown),
In the gap S between the pair of fitting protrusions 82a, 82a provided on the push-out plate 82 of the die block 7 and the ejector base 6, the wedge-shaped member 41 of the wedge-shaped member 41 is inserted from above in a direction indicated by an arrow C in FIG. The tapered leg portions 42, 42 are respectively
The ejector plate 6 is fixed to the push-out plate 82 by sandwiching it.

Next, the ring body 33a of the hooking member 33 screwed to the pressing member 31 is lifted up by a crane or the like and hooked by a hooking claw (not shown) of a hanging means (not shown), and the ring member 33a is drawn from above. The pressing member 31 is lowered in the direction indicated by the arrow C, and the concave portion (accommodation portion) of the movable mold 4 is moved.
The male insert 8 housed in 4a is pressed from above,
The male mold insert 8 is fixed in the recess (accommodation part) 4a of the movable mold 4.

After that, the movable mold 4 and the pressing member 31 are fixed by a plurality of bolts 51 and a plurality of lock pins 61. More specifically, the movable mother die 4 and the pressing member 31 are attached as shown in FIG. That is, in this example, a lock pin insertion hole 62 for inserting the lock pin 61 is formed in the movable base material 4, and a lock pin accommodation hole 63 for inserting the lock pin 61 is formed in the pressing member 31.
And the lock pin 61 housed in the lock pin housing hole 63.
A lock pin fixing bolt hole 64 for fixing the lock pin is formed.

A bolt hole 52 for inserting and screwing the bolt 51 is formed in the movable mold 4, and a bolt hole 53 for inserting and screwing the bolt 51 is formed in the holding member 31. Has been formed. The bolt hole 52 and the bolt hole 53 have a lock pin 61 and a lock pin insertion hole 62.
It is provided so as to be aligned exactly when fitted to.

When the pressing member 31 is attached to the movable mold 4, first, the lock pin 61 is housed in the lock pin housing hole 63 of the holding member 31, and then the lock pin 61 is locked by using the lock pin fixing bolt 65. The lock pin 61 is fixed in the pin accommodating hole 63. Next, the lock pin 61 is fitted into the lock pin insertion hole 62 provided in the movable mold 4. Then, each of the bolt holes 52 provided in the movable base material 4 and the bolt holes 53 provided in the pressing member 31 are aligned with each other, so that the bolt 6 and the bolt holes 52 and 53 are aligned with each other.
The pressing member 31 is fixed to the movable mold 4 by inserting 1 and screwing.

The lock pin 61 and the lock pin insertion hole 6
The shape of 2 is precisely processed so as not to cause a slight deviation when fitted. In this example, in addition to the use of the bolt 61 and the bolt holes 52 and 53 when the movable mold 4 and the pressing member 31 are fixedly attached, the lock pin 61 and the lock pin insertion hole 62 are further used. Since 63 is also used, it is easy to attach the pressing member 3 to the movable mold 4, and each of the lock pins 61, when fitted in each of the lock pin insertion holes 62, is a bit smaller than the other. The shape of the bolt 51 and the bolt hole 5 are so precise that it does not become out of order.
Movable mold 4 and pressing member 31 using only 2, 53
Rattling is less likely to occur between the movable mold 4 and the pressing member 31 as compared with the case where and are attached. Therefore, during die casting, the male insert 8 is less likely to rattle even if heat or mechanical force is applied, so that the die cast product can be manufactured more precisely.

Although the mounting of the movable mold 4 and the pressing member 31 has been described here, the mounting structure of the fixed mold 9 and the pressing member 71 is the same in this example. The description is omitted. Next, the hole portion 1 of the female insert 10 having the cooling pipe 18 connected to the back surface thereof.
The hooking member 13 is screwed onto the No. 4.

Next, the ring body 13a of the hooking member 13 screwed into the female insert 10 is lifted up by a crane or the like and hooked by a hooking claw (not shown) of a hanging means (not shown), and then from above. The female insert 10 is housed in the recess (accommodating part) 9 a of the fixed mold 9 in the direction indicated by arrow D in FIG. 3. Next, the hooking member 73 screwed to the pressing member 71.
The ring body 73a is lifted by a crane or the like, hooked on a hooking claw (not shown) of a hanging means (not shown), and the pressing member 71 is lowered from above in a direction indicated by an arrow D in FIG. The female mold insert 10 housed in the recess (accommodation part) 9a of the fixed mold 9 is pressed from above to fix the female mold insert 10 in the recess (accommodation part) 9a of the fixed mold 9. To do.

After that, the fixed mold 9 and the pressing member 71 are fixed by a plurality of bolts 51 and a plurality of lock pins 61. Next, the mold insert 1 housed in the fixed mold master 9
0 of the material supply passage 12 is connected to the material supply passage (not shown) of the casting machine (not shown). Next, the movable die plate (not shown) of the casting machine (not shown) is moved to the fixed die plate (not shown) side to move the movable die 2 and the fixed die 3.
And are closed, and then the molten metal is supplied from a molten metal inlet hole (not shown) of a casting machine (not shown) so that the male engraved surface 8a of the male insert 8 and the female insert 10 The molten metal is supplied into a space (cavity) (not shown) formed between the die-cast molded product and the engraved surface 10a.

By the way, when this die 1 is used when manufacturing a die-cast molded product different from the above, the movable die 2 is used.
Each of the fixed mold 3 and the fixed mold 3 is a male mold insert without being removed from the movable mold plate (not shown) of the casting machine (not shown) and the fixed mold plate (not shown). The female die can be replaced. First, the bolt 51 and the lock pin 61 are removed from the pressing member 31 of the movable mold 2 attached to the movable die plate (not shown), and then the ring of the hooking member 33 screwed to the pressing member 31. The body 33a is lifted by a crane or the like, hooked on a hooking claw (not shown) of a hanging means (not shown), and pulled up to remove the pressing member 31 from the movable mold 4. In addition, the ring body 43a of the hooking member 43 screwed with the wedge-shaped member 41 is lifted by a crane or the like, hooked by a hooking claw (not shown) of a hanging means (not shown), and pulled up to be wedge-shaped. The member 41 is removed from the gap S between the ejector base 6 and the pair of substantially L-shaped fitting protrusions 82a, 82a.

Next, the hook member 23 is screwed into the hole 24 of the male insert 8, and then the ring body 2 of the hook member 23 is inserted.
3a is lifted up by a crane or the like, hooked on a hooking claw (not shown) of a hanging means (not shown), and pulled up to remove the male mold insert 8 together with the ejector plate 6 from the movable mold 4. . Further, the bolt 51 and the lock pin 61 are removed from the holding member 71 of the fixed mold 3 attached to the fixed die plate (not shown), and then the ring of the hooking member 73 screwed to the holding member 71. The body 73a is lifted by a crane or the like, hooked on a hooking claw (not shown) of a hanging means (not shown), and pulled up to remove the pressing member 71 from the stationary mold 9.

Next, after the hooking member 13 is screwed into the hole 14 of the female insert 10, the ring body 13a of the hooking member 13 is lifted up by a crane or the like, and a hooking claw of a hanging means (not shown). The female mold insert 10 is removed from the fixed mold master 9 by hooking it on (not shown) and pulling it upward.
After preparing new male inserts and female inserts, each of the male inserts and female inserts is fixed to the movable die plate (not shown) of the casting machine (not shown) and fixed. After being housed in the movable mold 2 and the fixed mold 3 attached to the mold die plate (not shown), a die cast molded product is manufactured by the same procedure as described above.

As described above, this die casting mold has the movable mold 4 having the recess 4a having the opening 4h above and the fixed mold 9 having the recess 9a having the opening 9h above. Since the male mold insert 8 and the female mold insert 10 are exchanged, the male mold insert 8 can be pulled up and removed from the movable mold block 4, so that By lowering the male insert 8 from above, the male insert 8 can be attached to the movable mold 4, and the female insert 10 can be pulled up and removed from the fixed mold 9. The female insert 10 can be attached to the fixed mold 9 by lowering the female insert 10 from above the fixed mold 9.

In this mold 1, a male insert 8 and a female insert 9
Can be replaced in the vertical direction, and a crane or the like can be used for lifting and lowering means (not shown). Therefore, the male nesting member 8 and the female nesting member 10 can be replaced remarkably. It can be done easily. Further, since the replacement work of the male insert 8 can be performed by the vertical movement, both the male insert 8 and the ejector plate 6 can be exchanged in the vertical direction so that the male insert 8 and the male insert 8 can be exchanged. Since the ejector plate 6 and the ejector plate 6 can be simultaneously attached and detached at the same time, the replacement work of the male insert 8 and the female insert 10 can be significantly facilitated.

Further, on the rear side of the movable mold 4, a protrusion wall portion 4 is provided.
d is provided to prevent the male die insert 8 from moving in the lateral direction, and the recess 4 having an opening 4h above the movable die 4 is provided.
Groove holes 4b and 4b are provided on both side surfaces 4s and 4s that form a, and are provided on both side surfaces 8s2 and 8s2 of the male mold insert 8 and on both side surfaces 4s and 4s of the concave portion 4a of the movable mother die 4. Slot 4
Providing protrusions 21a and 21b to be fitted in b and 4b, the protrusions 21a and 21b are provided on both side surfaces 4 of the concave portion 4a of the movable mold 4.
The pressing member 31 that is fitted into the groove holes 4b and 4b provided in s4s and is housed therein, and is further fixed by pressing the male mold insert 8 housed in the recess 4a of the movable mold 4 from above. The male mold insert 8 is firmly attached to the movable mold 4 because of the structure in which the male mold insert 8 is fitted and fixed.

A protrusion wall 9d is provided at the rear of the fixed mold 9 to prevent the female mold insert 10 from moving laterally, and an opening 9h is formed above the fixed mold 9. Groove holes 9b, 9b are formed on both side surfaces 9s, 9s forming the recessed portion 9a.
Is provided on both side surfaces 10s2, 10s2 of the female mold insert 10 and projecting portions 21a, 21b to be fitted into the groove hole portions 9b, 9b provided on both side surfaces 9s, 9s of the concave portion 9a of the fixed mold die 9, The protrusions 21a and 21b are fitted into the groove holes 9b and 9b provided on both side surfaces of the recess 9a of the fixed mold 9 to be housed therein, and further, the females housed in the recess 9a of the fixed mold 9 are housed therein. Since the pressing member 71 for pressing and fixing the mold insert 10 from above is fitted and fixed, the female mold insert 10 is firmly attached to the fixed mold master 9.

Therefore, in the die 1, the rattling of the male die insert 8 and the female die insert 10 is unlikely to occur during die casting, so that the die cast molded product produced by the die 1 is The processing accuracy is excellent. In addition, depending on the die-cast molded product, the male mold insert 8 or the female mold insert 10 and the ejector base 6 can be simply replaced, so that the movable mold mother housing the male mold insert 8 or the female mold insert 10. If the mold 4 and the fixed mold 9 are standardized and shared,
Since the manufacturing cost of the mold can be suppressed, the manufacturing cost of the die cast molded product can be reduced.

The die casting die 1 is arranged so that the center positions thereof are not vertically aligned with the side faces 8s2, 8s2 of the male die insert 8 and the side faces 10s2, 10s2 of the female die insert 10. A set of protrusions 21 so that
a and 21b are respectively provided on the upper and lower sides, and both side surfaces 4s of the concave portion 4a formed in each of the movable mold die 4 and the fixed mold die 9,
Both side surfaces 9 of the groove portions 4b, 4b of 4s and the concave portion 9a
Both side surfaces 8 of the male insert 8 in the slot portions 9b, 9b of s, 9s.
s2, 8s2 and both side surfaces 10s2, 1 of the female insert 10.
The taper fixing portions 4T1 and 4T2 corresponding to each of the pair of protrusions 21a and 21b formed on each 0s2 are formed correspondingly. Therefore, each of the male insert 8 and the female insert 10 is attached to the movable mold 4 and the fixed mold 9.
When housed in each of the
The protrusion 21b on the lower side of b is easily fitted into the groove portions (4b, 4b), (9b, 9b) on both sides of the recesses 4a, 9a formed in the movable mold 4 and the fixed mold 9, respectively. be able to. Moreover, each of the male mold insert 8 and the female mold insert 10 is provided in each of the movable mold mold 4 and the fixed mold mold 9 and in each of the movable mold mold 4 and the fixed mold mold 9. Recess 4
Since the groove holes 4b and 4b of both side surfaces 4s and 4s of a and the groove hole portions 9b and 9b of both side surfaces 9s and 9s of the recess 9a are received as guides, the male insert 8 and the female insert 10 The accommodation work for accommodating each in the movable mold 4 and the fixed mold 9 becomes easy.

Further, one set is formed on each of the movable mold 4 and the fixed mold 9 on both side surfaces 8s2, 8s2 of the male insert 8 and both side surfaces 10s2, 10s2 of the female insert 10. Since the taper fixing portions 4T1 and 4T2 corresponding to the respective protrusions 21a and 21b of the male mold insert 8 and the female mold insert 10 are once formed, When fitted in each of the molds 9, the upper projection 21a of the pair of projections and the taper fixing portion 4T1 corresponding thereto and the lower projection 21b and the taper fixing portion 4T2 corresponding thereto are fixed, respectively. Male insert 8, Female insert 10
Since it is difficult for rattling to occur, it is possible to produce a die-cast product with excellent processing accuracy by die casting.

Further, in this mold 1, the taper fixing portion 4T
Since only 1 and 4T2 need to be processed accurately, the manufacturing cost of the mold can be kept low. In addition, in the die casting mold 1, the fitting projections 82a and 82a having a space portion larger than the size of the ejector base 6 are formed on the push-out plate 82, and the fitting projections 82a and 82a formed on the push-out plate 82 are attached to the ejector base. After housing 6 from above, the ejector base 6 and the fitting projections 82a, 82a
A wedge-shaped member 43 having tapered leg portions 42, 42 that narrows downward is sandwiched in a gap generated between
Since the ejector base 6 is fixed to the push-out plate 82, the ejector base 6 can be easily housed in the fitting protrusions 82a, 82a of the push-out plate 82, and the wedge-shaped member 43 can be fitted to the ejector base 6 and the fitting protrusions. 82a, 82
When it is removed from the gap S formed between the ejector base 6 and the pushing plate 82, the fitting protrusions 82a, 8 are formed.
Since a gap S is formed between the ejector base 6 and
Is easily removed above the fitting protrusions 82a, 82a formed on the push-out plate 82.

Moreover, at the time of die casting, since the pushing plate 82 and the ejector base 6 are integrated by the wedge-shaped member 43, a predetermined ejecting effect can be obtained. Further, in this example, the pressing members 31, 71, the male mold insert 8 and the female mold insert 10 are housed in the movable mold die 4 and the fixed mold die 9 from the upper side to the lower side, respectively, and from the lower side to the upper side. Since it is configured to be detached, since it is possible to use means for suspending and hoisting a crane or the like, it is possible to easily perform the replacement work of the male insert and the female insert.

Since the male mold insert 8 and the female mold insert 10 are housed in the movable mold mold 4 and the fixed mold mold 9 from above to below and removed from below to above, The cooling pipe 13 attached to the male mold insert 8 and the cooling pipe 18 attached to the female mold insert 10 can be replaced while being attached to the male mold insert 8 and the female mold insert 10. It is possible to easily perform the work of exchanging the mold insert and the female insert.

Further, in this die casting mold 1, a movable die 4 is mounted on a movable die plate (not shown) of a casting machine (not shown) and a fixed die 4 is mounted on a fixed die plate (not shown). Since the male die and the female die can be exchanged with the die 9 still attached, the male die and the female die can be easily exchanged. This die casting mold 1 has a male die insert 8 even in a harsh environment where the die is hot.
Since the replacement work of the female insert 10 can be easily performed in a short time, there is an effect that the labor of the operator can be reduced.

This specific example is used to explain the present invention, and the present invention is not limited to this specific example. For example, the movable mold 4
As the groove holes 4b and 4b formed on both side surfaces 4s and 4s of the concave portion 4a having an opening above, a tapered alignment groove 25 is formed downward as shown in FIG. It is also possible to form and form a protrusion 26 having a tapered protrusion structure corresponding to the tapered alignment groove 25 on both side surfaces 8s2, 8s2 of the male insert 8.

The groove 9b of the fixed mold 9 and the protrusion 21 of the female insert 10 may have the same structures as the groove 25 and the protrusion 26 shown in FIG. 7, respectively. . Even with such a configuration, the male insert 8 and the female insert 1
When each of 0 is housed in each of the movable mold 4 and the fixed mold 9, the protrusions 21 of each of the male insert 8 and the female insert 10 are attached to the movable mold 4 and the fixed mold. Slot part 4 of master block 9
b, 9b, and the projections 21, 21 of the male insert 8 and the female insert 10 on the movable mold 4 and the fixed mold 9 are provided on the groove 4b, 9b. Since it is easy to pull out in the direction, the replacement work of the male insert 8 and the female insert 10 can be easily performed.

[0075]

In the die casting mold with replaceable inserts according to the first aspect of the present invention, there is provided a movable die having a recess having an opening at the upper side and a fixed die having a recess having an opening at the upper side. Since the mother mold is used, when replacing the male mold and female mold insert, the male mold insert can be pulled up and removed from the movable mold, and the male mold can be inserted from above the movable mold. By lowering the child, the male insert can be attached to the movable mold, the female insert can be pulled up and removed from the fixed mold, and the female insert can be inserted from above the fixed mold. By lowering the child, the female mold can be attached to the fixed mold, so that the male mold and the female mold can be replaced by hoisting and hanging means such as a crane. Replacing the male and female inserts can be done extremely easily. That.

Further, since the replacement work of the male die can be performed by the vertical movement, the male die and the ejector plate having the ejector pin can be attached and detached at the same time. It is possible to remarkably easily perform the work of exchanging the mold and the female mold insert. Moreover, the groove portions are formed on both side surfaces of the movable die for forming the recess having the opening above the movable die, and the groove holes are formed on both sides of the opening of the movable die for the male mold insert. A male part housed in a concave part of the movable mold, and the protruding part is fitted into the groove holes provided on both side surfaces of the opening part of the movable mold part. A structure in which a pressing member that presses and fixes the mold insert from above is fitted and fixed, and a groove portion is provided on both side surfaces forming a recess having an opening above the fixed mold mother die Providing protrusions on both sides of the insert that fit into the groove holes provided on both sides of the recess of the fixed mold, and the protrusions on the groove portions provided on both sides of the recess of the fixed mold. It is fitted and housed, and further, a pressing member that presses and fixes the female mold insert housed in the concave part of the fixed mold from above is fitted and fixed. Since the structure of the male die insert is attached firmly to the movable die mold and a female insert is,
Since it is firmly attached to the fixed mold, the rattling of the male and female inserts during die casting is significantly reduced. The accuracy is excellent.

Further, depending on the die-cast molded product, it is possible to deal with it by simply exchanging the ejector base with the male or female die insert, so that the movable die mother frame that serves as the outer frame of the male or female die insert. Since the mold and fixed mold can be shared,
The manufacturing cost of the mold can be kept low. Therefore, this mold is particularly useful for producing a small amount of a wide variety of molded products.

In the interchangeable insert die casting mold according to the second aspect, the center positions of the male insert and the female insert are not vertically aligned on both sides. A pair of protrusions is provided on the upper and lower sides so as to project, and the groove holes on both sides of the concave portion formed on each of the movable mold die and the fixed mold die are provided on both sides of the male insert and the female insert. Since the taper fixing portion corresponding to each of the set of protrusions formed on each of the surfaces is formed correspondingly, the male mold insert and the female mold insert are formed in the movable mold mold and the fixed mold mold, respectively. When being housed in each of the molds, first, the lower projections of the pair of projections can be easily fitted into the slot portions on both side surfaces of the recesses formed in each of the movable mold die and the fixed mold die. Moreover, each of the male mold insert and the female mold insert is attached to each of the movable mold mold and the fixed mold mold,
Since the groove holes on both side surfaces of the concave portion provided in each of the movable mold die and the fixed mold die are accommodated as guides, the male mold die and the female mold die are respectively accommodated in the movable mold die and the fixed mold die. The accommodation work for accommodating each of the mother dies becomes easy.

Moreover, each of the movable type mold and the fixed type mold has a taper fixing portion corresponding to each of a pair of protrusions formed on both side surfaces of the male mold insert and the female mold insert. Since the male mold and the movable mold and the female mold and the fixed mold are fitted to each other, the projections on the upper side of the pair of projections and the corresponding taper fixing portions and Since the lower protrusions and the taper fixing portions corresponding thereto are fixed to each other, it is difficult for rattling to occur in the male insert and the female insert.

Therefore, during die casting,
Since the rattling of the male and female inserts is less likely to occur, it is possible to produce die-cast products with excellent processing accuracy. Further, only the taper fixing portion corresponding to each set of protrusions formed on both side surfaces of the male mold insert and the female mold insert is formed on each of the movable mold die and the fixed mold die with high processing accuracy. Therefore, the manufacturing cost of the mold can be reduced.

In the interchangeable insert die casting mold according to the third aspect, the groove portions formed on both side surfaces of the openings of the movable mold die and the fixed mold die are directed downward. The tapered alignment groove formed in a tapered shape, and the protrusions formed on both side faces of the male insert and the female insert are tapered to correspond to the tapered alignment groove. Since each of the male-type insert and the female-type insert is housed in each of the movable-type mold and the fixed-type mold, each of the male-type insert and the female-type insert is It is easy to fit the protrusions into the slot of the movable mold and fixed mold, and the protrusions of the male mold insert and female mold insert are inserted into the groove of the movable mold and fixed mold. Since it is easy to pull out the upper part of the part, it is easy to replace the male and female inserts.

In addition, the male mold insert and the female mold insert are formed on both sides of the recesses of the movable mold and the fixed mold in correspondence with the tapered alignment grooves formed on the both faces. Since the projecting portion of the tapered projecting structure is formed, once the male mold and the movable mold and the female mold and the fixed mold are fitted, the male mold and the female mold are inserted. It is difficult for rattling to occur. Therefore, rattling of the male and female inserts is unlikely to occur during die casting, so that a die-cast product with excellent processing accuracy can be produced.

In the interchangeable insert die casting die according to the present invention, a fitting projection larger than the size of the ejector base is formed on the extrusion plate, and the fitting projection formed on the extrusion plate is provided with the ejector base. After housing from above, in the gap created between the ejector base and the fitting groove,
Since a wedge-shaped member having tapered taper legs is sandwiched below and the ejector base is fixed to the push-out plate, it is easy to store the ejector base in the fitting protrusion of the push-out plate. When the wedge-shaped member is removed from the gap formed between the ejector base and the fitting groove, a gap is created between the ejector base and the fitting protrusion formed on the push plate, so that the ejector base is fitted on the push plate. It is easy to remove it above the mating protrusion.

In addition, at the time of die casting, since the push-out plate and the ejector base are integrated by the wedge-shaped member, a predetermined ejecting effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an overall configuration of a die casting mold as an example of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a movable mold of the die casting mold shown in FIG.

FIG. 3 is an exploded perspective view of a fixed die of the die casting die shown in FIG.

FIG. 4 is a diagram schematically showing the operating principle when the male mold inserter is housed in the recess (accommodation part) of the movable mold and is removed from the recess (accommodation part) of the movable mold. is there.

FIG. 5 is a perspective view schematically showing the role of the wedge-shaped member when attaching the ejector base to the die block and the role of the wedge-shaped member when removing the ejector base from the die block.

FIG. 6 is a view showing a mounting structure of a movable mother die and a pressing member.

FIG. 7 is a view showing a mounting structure of a movable mother die and a pressing member.

FIG. 8 is a perspective view schematically showing a conventional die casting die.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die casting mold 2 Movable mold 3 Fixed mold 4 Movable mother die 4a Recessed portion (accommodating portion) 4b Groove hole portion 4h Opening 4s1 Front of movable mother die 4bs1 First forming surface 4bs2 Second Forming surface 4T1, 4T2 Tapered fixing part 5 Ejector pin 6 Ejector base 7 Die block 8 Male insert 8a, 10a Engraving surface 8s1 Front face 8s2 Both sides of male insert 9 Fixed mold 10 Female insert 12 Material supply Passage 13 Cooling pipe 14 Runway 15 Hot water pool 16 Ejector pin insertion hole 19 Gates 21, 26 Projection portions 21a, 21b Projection 23 Hooking member 23a Ring body 23b Shaft 23c Screw thread 24 Hole portion 25 Positioning groove 31, 71 Presser Members 31a, 71a Projecting parts 33, 43, 73 of pressing members Hooking members 33a, 43a, 73a Ring body 3 4, 44 Holes 41 Wedge member 42 Legs 51 Bolts 52, 53 Bolt holes 61 Lock pins 62, 63 Lock pin insertion holes 81, 82 Push plate 82a Fitting protrusion H Height of fitting protrusion d Ejector base thickness

Claims (4)

[Claims] 1. A movable mold, in which a die block incorporating an ejector base having an ejector pin is connected to the rear, and a fixed mold, in which a material supply path connected to a molten metal supply means of a casting machine is formed, are opposed to each other. The movable mold includes: a movable mold provided with a recess having an opening at an upper portion thereof, and a groove hole provided on both side surfaces of the recess, and the movable mold. A male insert having projections that fit into groove holes provided on both sides of the concave part on both sides and a male engraving surface of a predetermined shape on the front surface, and a pressing member. The mold insert is housed in the concave portion of the movable mold by fitting the protruding portion into groove slots provided on both side surfaces of the concave portion of the movable mold, and further, A structure in which the male insert housed in the recess is pressed and fixed by the pressing member from above. The fixed mold includes a fixed mold including a concave portion having an opening at an upper portion, and groove holes provided on both side surfaces of the concave portion, and both sides of the concave portion of the fixed mold. A female insert having projections that fit into the groove provided on the surface on both sides and a male engraving surface of a predetermined shape on the front surface, and a pressing member, wherein the female insert is , The protrusions are fitted into the groove holes provided on both side surfaces of the concave portion of the fixed mold and are accommodated in the concave portions of the fixed mold, and are further accommodated in the concave portions of the fixed mold. A die casting mold having a replaceable insert, which has a structure in which the formed female insert is pressed and fixed from above by the pressing member. 2. A pair of protrusions provided so as to prevent the center positions of the male insert and the female insert from being aligned vertically, respectively, on both side surfaces of the male insert and the female insert. 1 is formed in each of both side surfaces of the male mold insert and the female mold insert in the groove portions on both side faces of the opening formed in each of the movable mold die and the fixed mold die. The interchangeable insert die casting mold according to claim 1, wherein a taper fixing portion corresponding to each of the pair of protrusions is formed correspondingly. 3. A tapered shape in which slotted portions formed on both side surfaces of a concave portion having an opening above each of the movable mold and the fixed mold are formed in a downwardly tapered shape. And a structure in which the protruding portions formed on both side surfaces of each of the male mold insert and the female mold insert are projected in a tapered shape corresponding to the tapered alignment groove. The insertable and replaceable die casting die according to claim 1. 4. The die block has an extruding plate provided so as to be movable in the direction of a fixed mold, and the extruding plate has an opening at an upper side for accommodating the ejector base so that the ejector base can be taken in and out from above. A fitting protrusion is formed, and the ejector base housed in the fitting protrusion is provided with two taper-shaped legs that taper downward in a gap formed between the ejector base and the fitting protrusion. The insertable die-casting die according to claim 1, 2 or 3, having a structure in which a wedge-shaped member having a portion is sandwiched and fixed.