TWI691370B - Die casting device - Google Patents

Abstract

The invention provides a die-casting device, the movable side main mold is provided with a pair of movable sides A guide plate guided by a metal mold, the guide plate having: a guide groove that guides the guide pin of the movable side mold; and a core-side recessed portion that is formed parallel to the guide groove and inserts the core into the fitting, when When inserting the movable side metal mold into the movable side recess of the movable side master mold, the outer side of the core is guided along the inner side of the core side recess, the outer side of the module is guided along the inner side of the movable side recess, and the guide pin Guided along the guide groove, the movable side mold is assisted with positioning by fitting the guide groove and the guide pin, and the ejection pin has nothing to do with the positioning of the movable side mold.

Description

Die casting device

The invention relates to a die casting device.

As a conventional die-casting device, there is known a forming metal mold in which a movable metal mold and a fixed metal mold are arranged to face each other, and the movable metal mold connects a die block in which an ejector base equipped with an ejector pin is built to the rear, The fixed mold is formed with a material supply path connected to the molten metal supply mechanism of the casting machine. In this forming mold, the movable mold includes: a movable mold master mold including a recessed portion having an opening above and a recessed portion provided in the recessed portion Slot holes on both sides; male mold inserts having protrusions fitted on both sides of the slots provided on both sides of the recess of the movable mold master on both sides, and having a male mold of a predetermined shape on the front The engraved surface; and the pressing member, the male mold insert is configured such that the protruding portion fits into the groove portions provided on both sides of the concave portion of the movable mold master mold and is accommodated in the concave portion of the movable mold master mold, which is further pressed The component presses and fixes the male mold insert housed in the concave portion of the movable mold master mold from above and from the side. The fixed metal mold includes: a fixed mold master mold including a concave portion having an opening above, and two provided in the concave portion Side slotted portion; female mold insert, which has protrusions fitted on both sides of the grooved portions provided on both sides of the concave portion of the fixed mold master on both side surfaces, and has a negative shape carved on the front Surface; and the pressing part, the female mold insert is constructed so that it protrudes The part fits into the grooves on both sides of the concave part of the fixed mold master mold and is accommodated in the concave part of the fixed mold master mold. The block is compressed and fixed (for example, refer to Patent Document 1).

[Prior Art Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent No. 2952469

However, in the die-casting device described in Patent Document 1, although the movable side master mold (movable mold master mold) can be replaced with the movable side metal mold (male mold insert), the metal mold The positioning is difficult, and when the metal mold is taken out and put in, the metal mold will catch the concave portion of the main mold, so as a result, the heavy main mold in the state where the metal mold is installed is removed and the metal mold is replaced After that, the heavy main mold is installed on the device again, so that the work efficiency is low, and it is heavy manual labor for the operator.

The present invention was made in view of the foregoing circumstances, and an object of the present invention is to provide a die-casting device that can easily position a movable-side metal mold, and can smoothly take out and put the movable-side metal mold relative to the movable-side main mold, thereby, The movable side metal mold can be easily replaced in a state where the movable side main mold is attached to the device.

The above object of the present invention is achieved by the following structure.

(1) A die-casting device including a fixed mold and a movable mold that can move away from and close to the fixed mold, and the fixed mold includes: a mold having a cavity A fixed-side metal mold; and a fixed-side main mold for mounting the fixed-side metal mold, the movable mold includes: a movable-side metal mold having a cavity; and a movable-side main mold for the movable-side metal mold, the The die-casting device is characterized in that the fixed side master mold is provided with a fixed side concave portion having an opening portion that is opened on an outer surface of the fixed side master mold, and the fixed side metal mold is inserted and fitted , The movable-side main mold is provided with a movable-side concave portion having an opening portion that is opened on an outer surface of the movable-side main mold, and the movable-side metal mold is inserted and fitted, and the movable side The metal mold is a unit including: a rectangular plate-shaped core in which the cavity is formed; a rectangular plate-shaped module arranged parallel to the core; and a guide connecting the core and the module A pin; and an ejector pin for demolding a molded product, a guide plate is provided on the movable side master mold, and the guide plate guides the movable side metal mold inserted into the movable side recess, the guide plate having : A guide groove formed from the outer surface of the guide plate toward the inner side in the width direction to guide the guide pin of the movable side mold; and a core-side recessed portion formed parallel to the guide groove, It has an opening that opens on the outer surface of the guide plate, and the core is inserted and fitted. When the movable side metal mold is inserted into the movable side recess of the movable side master mold, the type The outer side of the core is guided along the inner side of the core-side recess, the outer side of the module is guided along the inner side of the movable side recess, and the guide pin is guided along the guide groove, The movable side metal mold is assisted in positioning by the fitting of the guide groove and the guide pin, and the ejection pin has nothing to do with the positioning of the movable side metal mold.

According to the present invention, when the movable side metal mold is inserted into the movable side recess of the movable side master mold, the outer side of the core is guided along the inner side of the core side recess, and the outer side of the module is along the inner side of the movable side recess Guided, the guide pin is guided along the guide groove, the movable side mold is assisted by the positioning of the guide groove and the guide pin, and the ejector pin has nothing to do with the positioning of the movable side mold. Therefore, the movable side metal can be easily positioned The movable side metal mold can be taken out and put in smoothly with respect to the movable side main mold, whereby the movable side metal mold can be easily replaced with the movable side main mold mounted on the device.

10: Die-casting device

11: fixed mold

12: movable mold

20: fixed side metal mold

20a: cavity

20b: Sprue trough

21a: Outer side

30: fixed side master

30a: outer side

31: fixed side recess

31a: opening

31b: Inner side

40: movable side metal mold

40a: cavity

40b: Sprue channel

41: Core

41a: Outer side

42: Module

42a: Outer side

43: Guide pin

44: Sell out

50: movable side master

50a: outer side

51: movable side recess

51a: opening

51b: inner side

60: Guide plate

60a: outer side

61: Guide slot

62: core side recess

62a: opening

62b: inner side

U, D, L, R, Fr, Rr: direction

FIG. 1 is a schematic front view illustrating an embodiment of the die casting apparatus of the present invention.

FIG. 2 is a perspective view of the cavity side of the fixed mold shown in FIG. 1.

3 is a perspective view of the cavity side of the movable mold shown in FIG. 1.

FIG. 4 is a partial cross-sectional view through which the guide pin and the ejector pin of the movable side mold shown in FIG. 3 pass.

FIG. 5 is an enlarged front view illustrating a state where the movable-side metal mold is inserted into the movable-side main mold.

FIG. 6 is an enlarged front view corresponding to FIG. 5 illustrating a modification of the arrangement of ejector pins.

7 is a perspective view illustrating a first modification of an embodiment of the die casting apparatus of the present invention.

8 is a perspective view illustrating a second modification of the embodiment of the die casting apparatus of the present invention.

Hereinafter, an embodiment of the die casting apparatus of the present invention will be specifically described based on the drawings. It should be noted that in the following description, regarding the fixed mold and the movable mold, the upper side refers to the arrow U direction of FIGS. 2 and 3, the lower side refers to the arrow D direction of FIGS. 2 and 3, and the front side refers to FIGS. 2 and 3. The arrow Fr direction, the rear side refers to the arrow Rr direction of FIGS. 2 and 3, the left side refers to the arrow L direction of FIGS. 2 and 3, and the right side refers to the arrow R direction of FIGS. In addition, regarding the fixed side mold and the movable side mold, the upper side refers to the arrow Fr direction in FIGS. 2 and 3, the lower side refers to the arrow Rr direction in FIGS. 2 and 3, and the front side refers to the approach to the main mold in FIGS. 2 and 3. The rear side refers to the direction away from the main mold in FIGS. 2 and 3, the left side refers to the left direction orthogonal to the upper side and the front side, and the right side refers to the right direction orthogonal to the upper side and the front side. In addition, the left-right direction is also referred to as the width direction.

As shown in FIG. 1, the die casting apparatus 10 of the present embodiment includes a fixed mold 11 and a movable mold 12 that can move away from and approach the fixed mold 11. In addition, the movable mold 12 is configured to be driven in the left-right direction of FIG. 1.

As shown in FIG. 2, the fixed mold 11 includes: a pair of fixed-side metal molds 20 having a cavity 20 a; and a fixed-side main mold 30 to which the pair of fixed-side metal molds 20 are attached. The number and arrangement of the cavity 20a are arbitrary within the space range of the metal mold 20. When the production volume is small, one of the pair of fixed-side molds 20 may be a blank material that does not have the cavity 20a.

A pair of left and right fixed side recesses 31 are formed on the fixed side master mold 30. The fixed-side concave portion 31 has an opening 31 a that opens to the left and right outer side surfaces 30 a of the fixed-side main mold 30, and the fixed-side mold 20 is inserted and fitted. The fixed side mold 20 is a rectangular plate-shaped member, and includes a cavity 20a and a runner groove 20b connected to the cavity 20a. In addition, the number and arrangement of the cavity 20a are arbitrary within the space range of the metal mold 20.

As shown in FIG. 3, the movable mold 12 includes: a pair of movable-side metal molds 40 having a cavity 40 a; and a movable-side main mold 50 to which the pair of movable-side metal molds 40 are attached. The number and arrangement of the cavity 40a are arbitrary within the space range of the metal mold 40. When the production volume is small, one of the pair of movable-side molds 40 may be set as a blank without the cavity 40a in cooperation with the fixed-side mold 20 arranged in the fixed mold 11.

A pair of left and right movable side recesses 51 are formed in the movable side master mold 50. The movable side recesses 51 have openings 51 a that are opened on the left and right outer side surfaces 50 a of the movable side master mold 50, and the movable side mold 40 is inserted and fitted. Together.

As shown in FIGS. 3 and 4, the movable-side mold 40 is a unit including: a rectangular plate-shaped core 41 in which a cavity 40 a is formed; a rectangular plate-shaped module 42 arranged parallel to the core 41; A plurality of (two in this embodiment) guide pins 43 connecting the core 41 and the module 42; and a plurality of (two in this embodiment) mounted on the upper surface of the module 42 and demolding the molded product ) Eject the pin 44. The core 41 includes a cavity 40a and a runner groove 40b connected to the cavity 40a. In addition, the number and arrangement of the cavity 40a are arbitrary within the space range of the metal mold 40.

As shown in FIG. 4, the module 42 is installed so as to be movable in the vertical direction relative to the guide pin 43. Therefore, when the module 42 moves upward, the ejector pin 44 protrudes upward compared to the core 41.

In addition, as shown in FIG. 3, a guide plate 60 that guides the movable-side mold 40 inserted into the movable-side recess 51 is provided on the front surface of the movable-side master mold 50.

The guide plate 60 has a plurality of left and right pairs (three in this embodiment) guide grooves 61 which are formed from the left and right outer side surfaces 60 a of the guide plate 60 toward the widthwise inner side and guide the movable side mold 40 The pin 43 is guided; and the core-side recess 62, which is formed in parallel with the guide groove 61, has an opening 62a that is opened on the left and right outer side surfaces 60a of the guide plate 60, and inserts and inserts the core 41.

In addition, as shown in FIG. 5, the guide pin 43 and the ejector pin 44 are cylindrical members. Furthermore, since the guide pin 43 is guided by the guide groove 61, the outer diameter of the guide pin 43 is set to be slightly smaller than the width of the guide groove 61. In addition, the outer diameter of the ejector pin 44 is arbitrary within the width of the guide groove 61.

In addition, as shown in FIG. 5, in this embodiment, the two guide pins 43 are arranged to be inserted into the upper and lower guide grooves 61 of the guide plate 60, respectively, and the two ejection pins 44 are inserted into the upper and lower of the guide plate 60. One guide groove 61 in the center is arranged. Then, by fitting the guide groove 61 and the guide pin 43, the guide pin 43 moves along the guide groove 61, thereby guiding the insertion of the movable-side mold 40 and assisting the positioning of the movable-side mold 40. In addition, the ejector pin 44 has nothing to do with the positioning of the movable side mold 40. Therefore, not limited to FIG. 5, as shown in FIG. 6, the two guide pins 43 and the two ejection pins 44 may be arranged so as to be inserted into the two upper and lower guide grooves 61 of the guide plate 60, respectively. In addition, the guide groove 61 in the upper and lower centers may or may not be removed. In addition, the guide pin 43 and the ejector pin 44 only need to be able to stabilize the movable-side mold 40 and can be inserted into the guide groove 61, and the arrangement and number thereof are not limited.

In the die-casting device 10 configured in this manner, when the movable-side mold 40 is inserted into the movable-side concave portion 51 of the movable-side master mold 50, the outer side surface 41a of the core 41 is guided along the inner side surface 62b of the core-side concave portion 62 The outer surface 42a of the module 42 is guided along the inner surface 51b of the movable side recess 51, and the guide pin 43 is guided along the guide groove 61. In addition, when the fixed-side mold 20 is inserted into the fixed-side recess 31 of the fixed-side master mold 30, the outer side surface 21 a of the fixed-side mold 20 is guided along the inner side surface 31 b of the fixed-side recess 31.

As described above, according to the die casting apparatus 10 of the present embodiment, when the movable side die 40 is inserted into the movable side recess 51 of the movable side master mold 50, the outer side surface 41a of the core 41 follows the core side recess 62 The inner side surface 62b of the module is guided, the outer side surface 42a of the module 42 is guided along the inner side surface 51b of the movable side recess 51, and the guide pin 43 is guided along the guide groove 61, therefore, the movable side mold 40 can be easily positioned, and The movable side metal mold 40 can be smoothly taken out and put in with respect to the movable side main mold 50, whereby the movable side metal mold 40 can be easily replaced in a state where the movable side main mold 50 is attached to the device.

Next, as shown in FIG. 7, as a first modification of the present embodiment, the fixed mold 11 and the movable mold 12 may not be symmetrical structures on the left and right sides, but may be on either side of the left and right sides. It should be noted that the fixed mold 11 side is not shown.

In addition, as shown in FIG. 8, as a second modification of the present embodiment, the guide groove 61 of the guide plate 60 into which the guide pin 43 and the ejection pin are inserted may not be plural but one.

In addition, the present invention is not limited to the content exemplified in the above embodiment, It can be appropriately changed without departing from the gist of the present invention.

12: movable mold

40: movable side metal mold

40a: cavity

40b: Sprue channel

41: Core

41a: Outer side

42: Module

42a: Outer side

43: Guide pin

50: movable side master

50a: outer side

51: movable side recess

51a: opening

51b: inner side

60: Guide plate

60a: outer side

61: Guide slot

62: core side recess

62a: opening

62b: inner side

U, D, L, R, Fr, Rr: direction

Claims (2)

A die-casting device (10), characterized in that it includes a fixed mold (11) and a movable mold (12) that can move away from and close to the fixed mold (11), and the movable mold (12) includes : A movable side metal mold (40) having a cavity (40a); and a movable side main mold (50) for mounting the movable side metal mold (40), a movable side main mold (50) is provided with a movable A side concave portion (51) having an opening portion (51a) that is opened on an outer side surface (50a) of the movable side master mold (50), and inserting the movable side metal mold (40) Fitting, the movable side die (40) is a unit having the following parts: a rectangular plate-shaped core (41) in which the cavity (40a) is formed; and is arranged parallel to the core (41) A rectangular plate-shaped module (42); a guide pin (43) connecting the core (41) and the module (42); and an ejector pin (44) for demolding the molded product, in the The movable side main mold (50) is provided with a guide plate (60) that guides the movable side metal mold (40) inserted into the movable side recess (51), the guide plate (60) ) Has a guide groove (61) formed from the outer side surface (60a) of the guide plate (60) toward the inner side in the width direction to guide the guide pin (43) of the movable side die (40) ; And the core side concave portion (62), which is formed parallel to the guide groove (61), has an opening portion (62a) opening on the outer side surface (60a) of the guide plate (60), and makes the The core (41) is inserted and fitted. When the movable side metal mold (40) is inserted into the movable side recess (51) of the movable side master mold (50), the outer side of the core (41) The side surface (41a) is guided along the inner side surface (62b) of the core side concave portion (62), and the outer side surface (42a) of the module (42) is along the inner side surface (42) of the movable side concave portion (51) 51b) is guided, the guide pin (43) is guided along the guide groove (61), the movable side die (40) passes through the guide groove (61) and the guide pin (43) The positioning is assisted by fitting, and the ejector pin (44) has nothing to do with the positioning of the movable side metal mold (40). The die casting device (10) according to item 1 of the patent application scope, wherein the fixed mold (11) includes: a fixed side metal mold (20) having a cavity (20a); and a fixed side metal mold (20) The fixed-side main mold (30) installed, and the fixed-side main mold (30) is provided with a fixed-side concave portion (31) having the fixed-side main mold (30) The opening (31a) of the outer side surface (30a) is opened, and the fixed side mold (20) is inserted and fitted.

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