KR101061812B1 - Casting machine - Google Patents

Abstract

The base part 12, the lower metal mold | die 15, the 1st slide core 16 and the 2nd slide core 17, and an upper metal mold | die are provided. One cylinder (third air cylinder 25) which opens and closes the 1st slide core 16 and the 2nd slide core 17 is provided. This cylinder is provided on the base portion 12 and has a cylinder body 25b which is supported on the outside of the first slide core 16 so as to be movable in parallel with the opening and closing direction of the first slide core 16. The cylinder has a piston rod 25a connected to the first slide core 16. A connecting member (first and second connecting members 26 and 28 and tie bar 27) for connecting the second slide core 17 to the cylinder body 25b so as to interlock with each other; A stopper 29 is provided for regulating the movement in the open direction at the deployed position.

Casting machine

Description

Casting Machine {CASTING MACHINE}

The present invention relates to a casting machine having a slide core.

Conventionally, for example, the cylinder head of a motorcycle engine is cast by the low pressure casting method. As this low pressure casting machine, there exist some which were disclosed by Unexamined-Japanese-Patent No. 11-57979, for example. The casting machine disclosed in this publication is provided with a crucible disposed under a mold consisting of a lower mold and an upper mold to pressurize the molten metal stored in the crucible and push it up through a stalk and a cup, and then to a hot mouth of the lower mold. The structure to supply is employ | adopted.

In this type of conventional casting machine, when casting a casting of a complex shape that cannot be formed only by the upper mold and the lower mold, a slide core is used as shown in Figs. 6A and 6B.

6A and 6B are plan views showing the structure of a conventional casting machine having four slide cores, in which 1 denotes a base portion for supporting a mold, 2 denotes a lower mold, 3 denotes a slide core, and 4 denotes An air cylinder for driving the slide core 3, 5 represents a guide post for regulating the direction of movement of the slide core.

The lower metal mold | die 2 is formed in square shape in planar view, and is being fixed to the base part 1 via the support member which is not shown in figure. The slide core 3 is arranged to surround the lower mold 2 from all directions, and is capable of reciprocating between the mold clamping position shown in FIG. 6A and the mold opening position shown in FIG. 6B. It is supported by the base part 1. These slide cores 3 are connected to the piston rod 4a of the air cylinder 4 at the outer end surface.

The air cylinder 4 is provided for every slide core 3, and is fixed to the base part 1 in the state to which the movement of the cylinder main body 4b is restrict | limited.

However, as mentioned above, since the casting machine provided with the slide core 3 has the air cylinder 4 for driving a slide core in each side of a metal mold part, the whole casting machine becomes large and a large installation space is required. There was a problem. In particular, when a plurality of molds are to be arranged on one base portion, each air cylinder must be arranged between the molds, and the casting machine becomes larger.

The present invention has been made to solve such a problem, and an object thereof is to reduce the installation occupied space of the casting machine to the minimum necessary by miniaturizing the casting machine having a slide core.

The casting machine according to the present invention includes a base part, a lower mold fixed on the base part, a first slide core and a second slide core movably mounted on the base part and opposing each other, the lower mold and the first part. 1, A casting machine having a mold clamped on a second slide core to cooperate with these mold members to form a mold, and a cylinder for opening and closing the first slide core and the second slide core, wherein the cylinder The cylinder body which is supported on the base part so that the axial direction is parallel to the opening-and-closing direction of a 1st slide core on the outer side of the said 1st slide core, and is movably supported by the said 1st slide core, A connecting portion having a connected piston rod and connected to the cylinder body so as to interlock with the second slide core. And, to the above it is provided on a base portion provided with a stopper (stopper) for regulating the movement in the opening direction of the first slide core in the deployment (全開) position.

As described above, the casting machine according to the present invention moves in the direction in which the first slide core and the second slide core are mold clamped by the extension of the cylinder, and both slide cores move in the mold opening direction by the cylinder contracting. Therefore, according to the present invention, since the first and second slide cores can be driven by one cylinder located on the outside of the first slide core, the occupied space for cylinder arrangement is unnecessary on the outside of the second slide core. One casting machine can be provided. In addition, according to the present invention, since the two slide cores are driven by one cylinder, the number of cylinders used can be reduced.

According to the invention of claim 2, since a plurality of sets of molds are arranged in a state in which the second slide core which does not need the space for cylinder arrangement is adjacent to each other, the molds can be approached to each other, so that a plurality of sets of molds can be arranged in a narrow installation occupation space. have. Therefore, according to this invention, a casting machine can be miniaturized and the installation occupation space can be reduced to a minimum required.

According to invention of Claim 3, two 3rd slide core and a 4th slide core can be driven by two cylinders. As a result, according to the present invention, the number of use of the cylinder can be reduced and the space for installing the casting machine can be narrowed as compared with the case where these slide cores are driven by the cylinder, respectively.

According to invention of Claim 4, compared with the case where a drive apparatus for upper molds is provided in a plurality of metal mold | die respectively, the use number of the drive apparatus for upper molds can be reduced, and the installation occupation space of a casting machine can be narrowed. Accordingly, according to the present invention, a compact casting machine can be formed even though a plurality of dies are provided.

According to the invention of claim 5, the use number of the molten metal supply apparatus can be reduced, and the space for installing the casting machine can be narrowed, as compared with the case where the molten metal supply apparatus is provided in each of the plurality of molds. Accordingly, according to the present invention, a compact casting machine can be formed even though a plurality of dies are provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the structure of the casting machine lower metal mold | die and slide core which concerns on this invention.

It is a top view which shows the structure of the casting machine lower metal mold | die and slide core which concerns on this invention.

3 is a plan view showing the lower mold and the slide core in the mold clamping state.

4 is a plan view illustrating the lower mold and the slide core in the mold opening state.

It is a longitudinal cross-sectional view which shows the specific example of the casting machine which concerns on this invention.

Fig. 6A is a plan view showing the configuration of a conventional casting machine having four slide cores, and the figure shows a mold clamping state.

Fig. 6B is a plan view showing the configuration of a conventional casting machine having four slide cores, and the figure shows a mold opening state.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described with reference to drawings.

Here, the structure of the casting machine which concerns on this invention is demonstrated in detail first by FIG. 1 and FIG.

In FIG. 1 and FIG. 2, it is the casting machine which concerns on this invention shown by the code | symbol 11. As shown in FIG. This casting machine 11 is provided with two sets of metal molds 13 and 14 on one base 12. Each of the molds 13 and 14 has a rectangular lower mold 15 as viewed in a plane fixed to the base portion 12 and four slide cores 16 to 19 arranged to surround the lower mold 15 from all directions. ) And an upper mold not shown.

These molds 13 and 14 have a cavity inside the slide molds 16 to 19 on the four sides of the lower mold 15 (see Fig. 1). 20 is formed to be a closed space. Since these two molds 13 and 14 are only formed so as to be symmetrical in the left-right direction of FIGS. 1 and 2, in this embodiment, only the mold 13 located on the left side in FIG. 1 will be described. The metal mold | die 14 located in the right side of the same code | symbol is attached | subjected to the metal mold | die 13 of the left side, and detailed description is abbreviate | omitted.

The lower die 15 is formed so that hot water holes (not shown) penetrate in the vertical direction, and molten metal is supplied from a crucible (not shown) arranged below the base portion 12. The portion corresponding to the four corners of the lower mold 15 in the base portion 12 is regulated in the direction in which the first to fourth slide cores 16 to 19 to be described later move, and the upper mold at the time of clamping the mold. The corner post 21 for positioning is placed.

The four slide cores 16 to 19 are movably fitted between the four corner posts 21, 21... And between the mold clamping position shown in FIG. 1 and the mold opening position shown in FIG. 2. Are supported on each of the base portions 12 so as to reciprocate. Further, these first to fourth slide cores 16 to 19 are formed to be in close contact with slide cores adjacent to each other in a mold clamped state as shown in FIG.

Of these four slide cores 16 to 19, the first slide core 16 and the second slide core 17 which are arranged in the left-right direction and face each other in FIGS. 1 and 2 are described below. Is connected to. Moreover, the other 3rd slide core 18 and the 4th slide core 19 are the piston rods of the 1st, 2nd air cylinders 23, 24 arrange | positioned at the outer side (mold opening direction front side) of these slide cores ( 23a, 24a).

The base part 12 has the 1st, 2nd air cylinder 23, 24 so that an axial direction may be parallel to the opening-and-closing direction (up-down direction in FIG. 1, 2) of the 3rd, 4th slide cores 18, 19. As shown in FIG. Installed in In addition, these 1st, 2nd air cylinders 23 and 24 are in the state which the piston rod 23a, 24a protrudes from the cylinder main body 23b, 24b toward the 3rd, 4th slide core 18, 19. It is provided in the base part 12. That is, the third and fourth slide cores 18, 19 are mold clamped by the first and second air cylinders 23, 24 being extended (see FIG. 1). In addition, the third and fourth slide cores 18 and 19 are mold-opened by contracting both air cylinders 23 and 24 (see Fig. 2).

The opening / closing device 22 is constituted by the first slide core 16 and the second slide core (1) by one third air cylinder 25 located outside the first slide core 16 (front side in the mold opening direction). 17) is adopted. Specifically, the third air cylinder 25 is placed on the base portion 12 such that the axial direction is parallel to the opening and closing directions (left and right directions in FIGS. 1 and 2) of the first and second slide cores 16 and 17. It is arranged. Moreover, this 3rd air cylinder 25 is arrange | positioned on the base part 12 in the state which the piston rod 25a protrudes from the cylinder main body 25b to the 1st slide core 16 side. The first slide core 16 is connected to the protruding side end portion of the piston rod 25a of the third air cylinder 25. The cylinder main body 25b is supported by the rail which is not shown so that the movement to the opening-and-closing direction of the 1st, 2nd slide cores 16, 17 on the base part 12 is possible.

The cylinder main body 25b of the 3rd air cylinder 25 is the 1st connection member 26 extended in an up-down direction in FIG. 1, 2, and the 2nd slide core (from both ends of this 1st connection member 26). Two tie bars 27 and 27 extending in parallel with the opening and closing directions of the first and second slide cores 16 and 17 toward the side 17, and the speech side of these tie bars 27; Iii) The second slide core 17 is connected via a second connecting member 28 that connects the ends. In this embodiment, the 1st connection member 26, the tie bar 27, and the 2nd connection member 28 comprise the connection member according to the invention of Claim 1.

The tie bar 27 is made of a rod having a circular cross section, and both ends thereof penetrate the guide posts 21, and are supported by the guide posts 21 so as to allow movement only in the axial direction. The tie bar 27 according to this embodiment moves upward of the range in which the third and fourth slide cores 18 and 19 move so as not to block the movement of the third and fourth slide cores 18 and 19. It is arranged in the position to traverse.

Stopper for restricting the movement in the opening direction of the first slide core 16 in the open position in the vicinity of the guide post 21 supporting the end portion on the side of the first connecting member 26 in the tie bar 27. (29) is arrange | positioned. The stopper 29 has a structure in which the outer end face of the first slide core 16 comes into contact with each other to regulate its movement, and is fixed to the base part 12 in a state of protruding upward from the base part 12. It is. The stopper 29 which concerns on this embodiment opposes also the inner end surface of the 1st connection member 26, and this 1st connection member 26 to the mold opening direction (right in FIG. 1, 2). The mobility is also configured to regulate at the deployment position.

In FIG. 1 and FIG. 2, the metal mold | die 13 located on the left side, and the metal mold | die 14 located on the right side are provided in the base part 12 with the 2nd slide core 17 adjoining each other. The space | interval of these both metal mold | die 13, 14 is the 2nd connection member 28 of both metal mold | die 13, 14, in the state which the movement amount of the 2nd connection member 28 becomes the largest at the time of mold opening shown in FIG. ) Is set to the length that does not interfere with each other.

In the casting machine 11 configured as described above, the first to fourth slide cores 16 to 19 are opened by shrinking the first to third air cylinders 23 to 25 from the mold clamping state shown in FIG. 1. do. In the casting machine 11, the first to fourth slide cores 16 to 19 are mold clamped by extending the first to third air cylinders 23 to 25 on the contrary. In detail, the 3rd slide core 18 moves upwards in FIG. 1 and opens | releases by contracting the 1st air cylinder 23, and the 4th slide core 19 is contracted by shrinking the 2nd air cylinder 24. As shown in FIG. It moves downward and opens in FIG. In order to close these 3rd and 4th slide cores 18 and 19, it performs by extending | stretching the 1st and 2nd air cylinders 23 and 24. FIG.

On the other hand, in this casting machine 11, when the 3rd air cylinder 25 is retracted, the 1st slide core 16 moves to the left side in FIG. 1 with the piston rod 25a, and then to the stopper 29 In contact, the deployment position is reached. In this case, in this casting machine 11, the cylinder main body 25b of this 3rd air cylinder 25 moves to the right side in FIG. At this time, the second slide core 17 connected to the cylinder body 25b via the first and second connecting members 26 and 28 and the tie bar 27 also moves in the same direction as the cylinder body 25b. .

When the contraction of the third air cylinder 25 progresses and the second slide core 17 reaches the deployment position, as shown in FIG. 2, the first connecting member 26 contacts the stopper 29, The second slide core 17 is stopped further by being restricted in the movement in the opening direction.

In order to close these 1st and 2nd slide cores 16 and 17, it performs by extending the 3rd air cylinder 25. As shown in FIG. That is, since the piston rod 25a of the 3rd air cylinder 25 advances from the state shown in FIG. 2, the 1st slide core 16 moves toward the lower die 15, and the lower die 15 after that To stop at that position.

Then, the cylinder body 25b of the third air cylinder 25 moves in the direction away from the lower mold 15 so that the second slide core 17 positioned on the opposite side with the lower mold 15 interposed therebetween is provided. Move toward lower mold 15. Thereafter, the second slide core 17 stops at that position (mould-clamping position) because the second slide core 17 is in surface contact with the lower die 15 and the movement in the closing direction is further restricted.

The casting machine 11 thus configured is actually formed as shown in Figs. In FIGS. 3-5, the same or equivalent member as what was demonstrated by FIG. 1 and FIG. 2 is attached | subjected with the same code | symbol, and detailed description is abbreviate | omitted suitably.

In the two sets of dies 13 and 14 illustrated in FIGS. 3 to 5, the third slide cores 18 and 18 and the fourth slide cores 19 and 19 are respectively formed of the third connection member 31 and the first connection member 31. Four connection members 32 are connected to each other. The third connecting member 31 is connected to the piston rod 23a of the first air cylinder 23, and the fourth connecting member 32 is connected to the piston rod 24a of the second air cylinder 24. . The 3rd connection member 31 and the 4th connection member 32 comprise the connection member by which the invention of Claim 3 was made.

That is, in this embodiment, two 3rd slide cores 18 and 18 are driven by one air cylinder (first air cylinder 23), and it drives to one air cylinder (second air cylinder 24). The two fourth slide cores 19 and 19 are driven by this. In this way, the two third slide cores 18 and 18 are driven by one first air cylinder 23, and the two fourth slide cores 19 and 19 are driven by one second air cylinder 24. The casting machine 11 of the structure which drives by this comprises the casting machine of Claim 3. By adopting this configuration, the number of uses of the cylinder can be reduced as compared with the case where the four third and fourth slide cores 18 and 19 in total are driven by the air cylinder, respectively. In addition, by adopting this configuration, the space for occupying the installation of the casting machine 11 can be narrowed.

In this way, since the two third slide cores 18 and 18 move integrally, and the two fourth slide cores 19 and 19 move integrally, in this embodiment, the guide post 21 It is provided only in the part which becomes four corners of a metal mold | die formation part. Moreover, since there are four guide posts 21, only the edge part by the side of the 1st slide core 16 of the tie bar 27 of the opening-and-closing apparatus 22 is supported by the guide post 21 so that a movement is possible. In the mold 13 on the left side, the tie bar 27 according to the present embodiment is disposed below the third slide core 18, and the other side is disposed above the fourth slide core 19. .

In addition, one of the two tie bars 27 of the right die 14 is disposed above the third slide core 18, and the other is disposed below the fourth slide core 19. By adopting this configuration, end portions on the side of the second connecting member 28 in both tie bars 27 of the mold 13 positioned on the left side in FIGS. 3 and 4 and the mold located on the right side in the same figure. It is possible to prevent the ends on the side of the second connecting member 28 in both tie bars 27 of the 14 from interfering with each other. In addition, according to this structure, the 2nd connection member 28 of both metal mold | die 13 and 14 can be made close to each other.

Moreover, the 3rd air cylinder 25 which concerns on this embodiment is being fixed to the support member 34 supported so that the movement to the base part 12 through the rail 33 is possible. In FIGS. 3 and 4, reference numerals 35 provided in the vicinity of the first to fourth slide cores 16 to 19 denote guide rails for supporting the slide cores on the base portion 12 so as to be movable in parallel. to be.

The molten metal supply apparatus 38 which has the furnace 36 and the crucible 37 is provided below the base part 12 with which the two sets of metal molds 13 and 14 were mounted, and the base Above the part 12, the upper metal mold | die 40 and 40 supported by the drive device 39 are located. In this embodiment, the lower metal mold | die 15, 15 is hold | maintained by the support member 12a fixed on the base part 12. As shown in FIG.

The furnace 36 includes a main body 41 formed in a box shape opening upward, a lid 42 closing the upper opening portion of the main body 41, a crucible 37 for storing the molten metal 43, and It is comprised by the stoch 44 etc. which were attached to the lid | cover 42 and the lower end part was immersed in the molten metal 43. The main body 41 of the furnace 36 has a built-in heater (not shown) for heating the molten metal 43 in the crucible 37 to a predetermined temperature, and a pressurization device (not shown) is connected thereto. have. This pressurization apparatus is for supplying an inert gas into the main body 41 at the time of casting, and for extruding the molten metal 43 into the stock 44.

In this embodiment, the structure in which the molten metal 43 is supplied to the two sets of metal mold | die 13 and 14 from one crucible 37 is employ | adopted. In detail, in the casting machine 11 according to this embodiment, the lower die 15 is held by the support member 12a fixed on the base portion 12. The hot water cup 46 (refer FIG. 5) of this lower metal mold | die 15 is connected with the hot water cup 46 supported by the support member 12a, and the stoke 44 is connected through this hot water cup 46. . The stoke 44 and the mouth ball cup 46 are provided for every mouth ball 45 (every mold 13 and 14). The two stokes 44 are immersed at the lower end in the same crucible 37.

On the other hand, the drive device 39 provided on the upper part of the base part 12 has a tie bar 51 extending upward from four corner portions of the base part 12, and the elevating way in the middle of the tie bar 51. It is provided with a platen 52 held as possible. The platen 52 supports the upper mold 40 of the mold 13 located on the left side in FIGS. 3 to 5 and the upper mold 40 of the mold 14 located on the right side in the figure. And lifted by a motor not shown. In the upper mold 40 illustrated in FIG. 5, after the casting is finished and the mold is opened, the casting W is separated from the lower mold 15 together with the upper mold 40 so that the casting W is the upper mold 40. It is depicted as stuck in.

In the casting machine 11 configured as described above, the first slide core 16 and the second slide core 17 are driven by the third air cylinder 25 located outside the first slide core 16. can do. As a result, in this casting machine 11, the occupied space for arranging the air cylinder on the outside of the second slide core 17 becomes unnecessary. In this embodiment, although another mold is arrange | positioned in the occupied space, when forming a casting machine so that there is only one set of metal mold | die, it can be miniaturized compared with the conventional casting machine only by the occupied space part.

As shown in this embodiment, by providing a plurality of sets of molds so that the second slide core 17, which does not require the occupied space for cylinder arrangement, are adjacent to each other, the molds can be arranged in close proximity to each other, and a plurality of sets of molds in a narrow installation occupied space. (13, 14) could be arranged and arranged.

In addition, the casting machine 11 shown to FIG. 3-FIG. 5 makes the upper metal mold | die 40 of the several metal mold | die 13, 14 located on the base part 12 by the drive device 39 for one upper metal mold | die. The structure which raises and lowers is adopted. As a result, the casting machine 11 can reduce the number of uses of the driving device for upper molds, and occupy the installation of the casting machine 11, as compared with the case where the driving device for upper molds is installed in the plurality of molds 13 and 14, respectively. You can narrow the space. Therefore, a compact casting machine can be formed by employing the configuration of the casting machine 11 even though a plurality of molds are provided.

In addition, the casting machine 11 shown in FIGS. 3-5 is employ | adopted the structure which supplies molten metal from one molten metal supply apparatus 38 to the several set metal mold | die 13 and 14 located on the base part 12. As shown in FIG. . As a result, according to the casting machine 11, the use number of the molten metal supply device can be reduced, and the space occupied by the casting machine 11 can be reduced, compared to the case where the molten metal supply devices are respectively installed in the plurality of molds 13 and 14. Can be narrowed. Therefore, a compact casting machine can be formed by employing the configuration of the casting machine 11 even though a plurality of molds are provided.

In the casting machine 11 described above, two slide cores (the first slide core 16 and the second slide core 17) can be driven by one air cylinder (third air cylinder 25). As a result, according to the casting machine 11, the number of use of the air cylinder can be reduced as compared with the case of installing the air cylinder for each slide core. Therefore, in the casting machine 11, the molten metal supplying device 38 and the upper mold driving device 39 can be shared by the two molds 13 and 14, and the number of parts can be reduced, thereby reducing the cost. We can plan.

In addition to the embodiment shown in FIGS. 3 to 5, the molds as shown in FIGS. 1 and 2 can be arranged on the base portion 12 by arranging in a zigzag when viewed in four sets and in a plan view. In this case, the same drive system as the first and second slide cores 16 and 17 is applied to the third and fourth slide cores 18 and 19 and the first and second air cylinders 23 and 24 that drive the same. It can be adopted. In detail, when the mold group which consists of two sets of metal molds 13 and 14 which are parallel to the left-right direction in FIG. 1 and FIG. It is arrange | positioned on a base part 12 in a zi-shaped shape. Thus, by providing a metal mold | die, the metal mold | die 13 located on the left side in FIG. 1 and FIG. 2 is arranged in two sets in the up-down direction of the same figure, and the other metal mold | die 14 is two sets in the up-down direction of the figure. Will be listed.

The first air cylinder 23 of the metal molds 13 and 14 constituting the metal mold group located on the upper side of the die-shaped among the four metal molds 13 and 14 listed as described above is axially connected to the base portion 12. It is supported to be movable in the direction. The cylinder body 23b of this first air cylinder 23 is connected to the fourth slide core 19 so as to be interlocked through a connecting member. Even when this configuration is adopted, a stopper for stopping the third slide core 18 in the deployed position is also provided in the base portion 12. By adopting this configuration, the third and fourth slide cores 18 and 19 can be driven by the first air cylinder 23, and the second air cylinder 24 becomes unnecessary.

On the other hand, the metal mold | die 13, 14 of the metal mold | die group located in the lower side of a diaper is formed so that it may be symmetrical in the up-down direction with the metal mold | die 13, 14 located in the upper side. That is, the molds 13 and 14 of the lower side mold group can drive the third and fourth slide cores 18 and 19 by the second air cylinder 24, so that the first air cylinder 23 can be driven. Becomes unnecessary.

By configuring in this way, since the space | interval of two metal mold groups can be narrowed, four sets of metal molds 13 and 14 can be equipped, aiming at compact casting machine.

INDUSTRIAL APPLICABILITY The present invention can be used for a casting machine for casting parts such as cylinder heads of vehicle engines, marine engines, and other general-purpose engines.

Claims (5)

A base portion; A lower mold fixed on the base portion; A first slide core and a second slide core movably mounted on the base and opposing each other; An upper mold clamped on the lower mold and the first and second slide cores to cooperate with these mold members to form a mold; A casting machine having one cylinder for opening and closing the first slide core and the second slide core, wherein the cylinder has an axial direction of the first slide core on an outer side of the first slide core on the base portion. A cylinder body movably supported in the opening and closing direction so as to be parallel to the opening and closing direction, and a piston rod connected to the first slide core; And a stopper for connecting the second slide core to the cylinder body so as to interlock with each other, and a stopper provided on the base and regulating the movement in the opening direction of the first slide core in a deployed position. Casting machine. The method of claim 1, A plurality of molds having the first and second slide cores and the cylinder are provided on one base portion, and the molds are provided side by side on one base portion so as to be adjacent to the second slide core. Casting machine made. The method of claim 2, Two sets of molds each having the first and second slide cores, the third slide core and the fourth slide core which are provided on one of the molds and face each other, and the other molds of the molds; A third slide core and a fourth slide core facing each other, a connecting member for connecting the third slide cores positioned at one side of the mold among the third slide cores and the fourth slide cores so as to interlock with each other; And a connecting member for connecting the fourth slide cores positioned at the other side of each other to interlock with each other, a cylinder for driving the third slide cores, and a cylinder for driving the fourth slide cores. Casting machine. The method of claim 2, And a driving apparatus for one upper mold for raising and lowering the upper mold of the plurality of molds positioned on the base portion. The method of claim 2, And a molten metal supplying device for supplying molten metal to a plurality of sets of metal molds located on the base portion.

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