TW200534941A - Casting machine - Google Patents

Abstract

A casting machine, comprising a base (12), drags (15), first slide cores (16) and second slide cores (17), and copes. The casting machine also comprises cylinders (third air cylinders (25)) opening and closing the first slide cores (16) and the second slide cores (17). The cylinders further comprise cylinder bodies (25b) supported on the base (12) on the outside of the first slide cores (16) movably parallel with the opening/closing directions of the first slide cores (16). The cylinders also comprise piston rods (25a) connected to the first slide cores (16). In addition, the casting machine comprises connection members (first and second connection members (26) and (28) and tie bars (27)) for continuously connecting the second slide core (17) with the cylinder bodies (25b) and stoppers (29) restricting the movements of the first slide cores (16) in the opening direction at fully open positions.

Description

200534941 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a casting machine with a sliding core. [Prior art] In the past, for example, the cylinder head of a locomotive engine was prayed with a low pressure prayer method. As a casting machine for this low-pressure casting, for example, there is a patent document i disclosed. The casting machine disclosed in this patent document 1 has a structure in which a smelting furnace is arranged below a mold including a lower mold and an upper mold, and the molten metal stored in the furnace is pressurized, and upward through a hot runner and a funnel gate It is extruded and supplied to the straight gate of the lower mold. According to a conventional casting machine of this type, when casting a complex-shaped cast product that cannot be formed by only the upper mold and the lower mold, a sliding core as shown in Fig. 6 is used. FIG. 6 is a plan view showing the structure of a conventional casting machine with four sliding mold cores. In the figure, symbol 1 is a base for mold support, 2 is a lower mold, 3 is a sliding core, and 4 is a driving device. The cylinder 5 for the sliding core 3 is an auxiliary guide post that restricts the moving direction of the sliding core. The lower mold 2 is formed in a rectangular shape in a plan view, and is fixed to the base 1jL via a support member (not shown). The sliding mold core 3 is arranged to surround the lower mold 2 by four sides, and is supported on the base M so as to be reciprocated between the mold clamping position shown in FIG. Ii) and the mold opening shown in FIG. (B). mobile. These sliding cores 3 are connected to the piston rod 乜 of the air cylinder 4 on the outer end surface. The above-mentioned air cylinder 4 is provided for each sliding core 3, and is fixed to the base 1 in a state where the movement of the air cylinder body is restricted. 98765.doc 200534941 Except for the prior art documents specified by the information, prior to filing the application, no prior art documents closely related to the present invention were found. [Patent Document 1] Japanese Patent Application Laid-Open No. 11-57979 [Content of the Invention]

However, according to the above-mentioned casting machine having the sliding core 3, since the cylinders 4 'for driving the sliding core are arranged on each side of the mold part, the casting machine as a whole is enlarged, and there is a problem that a large installation space is required. In particular, if a plurality of molds is arranged on one abutment, it is necessary to set each gas red between each mold, so that the casting machine is further enlarged. The present invention is to solve the above problems, and the purpose is to reduce the installation space of the casting machine to necessary by miniaturizing the casting machine with a sliding mold core. To achieve this purpose, the casting machine of the present invention is to face each other. The first and = sliding mold cores are arranged on the abutment to be freely movable, and a "slipper in #sliding mold core opener and close" is used to swing the air cylinder main body on the outer side of the upper mold core to make it The axis direction is parallel to the first sliding mold: 2 ° direction and freely move in the opening and closing direction; in the above-mentioned red main: the second sliding mold 7 is connected by a connecting member to make it move; and the piston rod is connected to the above -The sliding core, and will respond to this: 2: The movement in the opening direction of the core is at the fully open position and the stopper is provided on the above abutment. Known :: The foundry machine of the invention is included in the request In each manufacturing machine of the Ming Dynasty, the first and second sliding mold cores and the gas ^ 98765.doc 200534941 molds were placed in a basic μ μ A… complex array, and these molds were arranged side by side on a base opening so that the first Two sliding mold cores are adjacent. In the invention of the prayer making machine, in the Ming casting machine, the m ^ owed to 2 members of the cutting group, the mold of these ^ sliding mold core is limited to two cores, this first-,: Γ 别Set the third and fourth sliding modes facing each other

And the movable mold cores are connected to each other, and the fourth sliding mold cores located in the above-mentioned mold: f are connected to each other, and the cylinder having the first and second movable mold cores can drive the first Cylinder with four sliding mold cores. The casting machine described in Yuexi claim 4 is in claim 2 or the requesters: the casting machine that has been set in | Ming, the upper mold of the plurality of molds located on the abutment is driven by an upper mold The device is used to raise and lower. "The monthly foundry 5 δ found invention of the foundry machine, which is in the invention described in the request item ^ to the request item * = one, the mold on the abutment of a complex array of molds A molten metal supply device supplies molten metal. According to this matter, the first sliding mold core and the second sliding mold core will move in the mold clamping direction by the cylinder extension, and the two sliding mold cores will move in the mold opening direction by the cylinder retraction. In this way, the first and second sliding mold cores can be driven by an air cylinder located outside the first sliding mold core. Therefore, the second sliding mold core does not need a space for the cylinder configuration, and can provide a small size. Casting machine. In addition, since two sliding mold cores are driven by one cylinder, the number of cylinders can be reduced. According to the invention described in claim 2, a plurality of array molds are arranged side by side so that no air cylinder is required. 98765.doc 200534941 The first sliding mold core is adjacent to each other. Therefore, it is possible to arrange the plurality of arrays in a small installation space. Stencil. The casting machine can be miniaturized, reducing the space required for installation. Two third cylinders can be driven by two cylinders ’Therefore, compared with these sliding cores

'Can reduce the number of gas red use, and time. Liyi ’s invention of 4δ has been included in the month, compared with the set of molds for multiple arrays: the situation of the mold drive device can reduce the number of upper mold drive devices' and reduce the installation space of the casting machine. Therefore, even if a plurality of molds are arranged, a compact casting machine can be formed.

The configuration of the space mold is close to the minimum according to the invention described in claim 3, and the sliding mold core and the fourth slide mold are driven by cylinders, respectively. Compared with the setting of multiple molds separately, it can reduce the number of molten metal supply devices and reduce the size of the casting machine. Therefore, even if multiple molds are configured, it can also be used. Forms a small casting machine. [Embodiment] The following manner. 1 to 5 to explain in detail the implementation of the second and one of the casting machine of the present invention: 2 is a plan view showing the structure of the lower mold and sliding core of the casting machine of the present invention. 3 and FIG. 4 are diagrams showing specific examples of the casting machine of the present invention. FIG. 3 is a plan view of the lower mold and the sliding mold core in the dry state. The figure shows that the lower mold and the sliding mold are opened through the mold. Core plan view. Fig. 5 is a longitudinal sectional view of a specific example of the casting machine shown in 98765.doc 200534941, and the same is a sectional view taken along line v_v in Fig. 4. Here, first, the structure of the casting machine of the present invention will be described in detail with reference to Figs. 1 and 2. This casting machine 11 is provided with two sets of molds 13 and 14 on a base 12. Each of the molds 13 and 14 includes: a lower mold 15 which is fixed on the abutment 12 and has a rectangular shape when viewed from a plane; four sliding mold cores 16 to 19 which are configured to surround this lower mold 1 5 by four sides; And the upper mold is not shown. These molds 3, 14 are clamped on the four side portions of the lower mold 15 described above by sliding 16 to 19 (refer to FIG. 1), and the upper molds are clamped on these mold members. The inner mold cavity 20 is formed as a closed space. Since these two molds 13 and 14 are formed symmetrically in the left and right directions of FIG. 丨 and FIG. 2, in this embodiment, only the drawings are positioned! The mold 13 on the left side in the middle is described, and the mold 14 on the right side in the figure is marked with the mold on the left side. The same symbols are used, and detailed descriptions are omitted. In the aforementioned lower mold 15, a straight gate (not shown) is formed to penetrate in the vertical direction, and is supplied to the above-mentioned abutment 12 by a dazzling furnace (not shown) disposed below the abutment 12. At the positions corresponding to the four corners of the lower mold 15, there are auxiliary corner posts 21 for restricting the moving directions of the first and fourth sliding mold cores 16 to 9 described later and positioning the upper mold during mold clamping. The four sliding molds 16 to 19 are fitted so as to be able to move freely between the four auxiliary corner posts 21, 21, ..., and in order to be able to be in the mold clamping position shown in FIG. The mold positions move back and forth, and are selected to be freely movable on the abutment ^. In addition, as shown in FIG. 1, these first to fourth sliding mold cores are formed so as to be in close contact with adjacent sliding mold cores in the state of being clamped 98765.doc 200534941. Among the four sliding mold cores 16 to 19, the first sliding mold core 16 and the second sliding mold core which are opposite to each other in the left-right direction in FIG. 1 and FIG. 2 are connected to the opening and closing device described later. 22. The other third sliding mold cores 丨 8 and the fourth sliding mold core 19 are connected to the first and second cylinders 23 and 24 arranged on the outer side (front side of the mold opening direction) of these sliding mold cores. The piston rods 23a, 24a. The axis directions of the first and first cylinders 23 and 24 ′ are parallel to the opening and closing directions of the third and fourth sliding mold cores 18 and 19 (the up and down directions in FIGS. 1 and 2), and the piston rods 23 a and 24 a The cylinder main bodies 23 b and 24 b are attached to the base 12 in a state of protruding toward the third and fourth sliding cores 18 and 19. That is, by the first and second cylinders 23 and 24 being extended, the third and fourth sliding mold cores 18 and 19 will be clamped (refer to FIG. 1), and by the above two gas reds 23 and 24 contracting, this The slide cores 18 and 19 will be opened (see Fig. 2). The opening and closing device 22 is configured to drive the first sliding core 16 and the second sliding core 17 with a third air cylinder 25 located outside the first sliding core 6 (the front side in the mold opening direction). In detail, the axis direction of the third gas red 2 $ is parallel to the opening and closing directions of the first and second sliding mold cores 16 and 17 (the left and right directions in FIGS. 1 and 2), and the piston rod 25 a The cylinder body 25b is disposed on the base 12 in a state of protruding toward the first slide core 16 side. The piston rod 25a of the second cylinder 25 is connected to the first sliding mold core 16 at the protruding side end, and the cylinder body 25b is supported on the base 12 by a guide rail (not shown) to slide in the first and second stages Free movement in the opening and closing direction of the core. The first cylinder member 25b of the second cylinder 25 is opened and closed parallel to the second sliding mold core 98765.doc 200534941 16, 17 through a first connecting member 26 extending upwardly and downwardly in Figs. Directionally, the two auxiliary guide posts 27 and 27 extending from both ends of the first connecting member 26 toward the second sliding mold core 17 and the second link connecting the extended side ends of the auxiliary guide posts 27 The member 28 is connected to the second sliding core 17. The auxiliary guide post 27 is formed by a rod having a circular cross section, and both ends thereof pass through the auxiliary guide post 21, and are supported by the auxiliary guide post 21 so as to be freely movable only in the axial direction. The auxiliary guide post π according to this embodiment is arranged at a position above the moving range of the second and fourth sliding mold cores 19 in order to avoid obstructing the movement of the third and fourth sliding mold cores 18 and 19. . In the auxiliary guide post 27, a stopper 29 is disposed near the auxiliary guide post which supports the end portion on the side of the first connecting member 26 to restrict the movement in the opening direction of the first sliding core at the fully opened position. The baffle plate 29 has a structure in which the outer end surface of the first sliding mold core 16 abuts to restrict its movement, and is fixed to the base table 12 in a state protruding from the base table ^ upward. The stopper of this embodiment is also opposite to the inner end surface of the first connecting member 26, and also restricts the mold opening direction of the first connecting member in the fully open position (to the right in Figures 丨 and 2). In FIG. 1 and FIG. 2, the mold 13 on the left side and the mold on the right side are mounted on the base 12 in a state where the second slide core 17 is adjacent to each other. The interval between these two molds 13 and 14 is set to a length that the second connecting members 28 of the two molds 13 and 14 do not interfere with each other when the mold is opened as shown in FIG. 2. In the casting machine constructed as described above, the first to third cylinders 23 to 25 are contracted by shrinking the mold clamping state shown in the figure, and the first to fourth sliding mold cores 16 to 19 are opened. In contrast, by extending the first to third cylinders ^ to even, 98765.doc -12- 200534941 the first to fourth sliding mold cores 16 to 19 are closed. In detail, when the first cylinder 23 is contracted, the third sliding mold core 18 is moved to the upper side in FIG. 1 and the mold is opened. When the second cylinder 24 is contracted, the fourth sliding mold core 19 is moved to FIG. 1. Open the mold on the lower side. To close these third and fourth sliding mold cores 8 and 19, the first and second cylinders 23 and 24 are extended. On the other hand, by the contraction of the third cylinder 25, the first sliding mold core 16 will move to the left of FIG. 1 along with the piston rod 25a, and finally abut against the stopper 29 to reach

When the fully open position is reached, the cylinder body 25b of the third cylinder 25 is moved to the right in FIG. 1. At this time, the cylinder body: the second sliding die core port connected via the first and second connecting members 26, 28 and the tie rod 27 also moves in the same direction as the cylinder body 25b. If the third cylinder 25 continues to shrink and the second sliding core 17 reaches the fully open position, as shown in FIG. 2, the first connecting member 26 will abut against the stopper 29, and the second sliding core 17 is restricted. It cannot move further in the open direction and stops. To close these first and second slide cores 16, 17, the third cylinder 25 is extended. That is, when the piston rod 图 of the third gas red 25 advances from the state shown in FIG. 2, the first sliding mold core 16 moves to the lower mold 15 and finally abuts the lower mold 15 and stops at the position. As a result, the cylinder main body 25b of the third cylinder 25 is moved away from the lower mold 15, and the second sliding mold core 17 located on the opposite side through the lower mold 15 is pushed downward and moved more frequently. After that, the first movable mold 17 can not be further placed into the furnace A # 4 ^ (clamping position) by abutting the lower mold M limit. "Move to the direction ', therefore, the casting machine 11 constructed in such a way as to stop at 98765.doc -13-200534941 is actually formed as shown in Figs. In Figs. 3 to 5, components that are the same as or equivalent to those described with reference to Figs. 1 and 2 above will be given the same reference numerals and detailed descriptions thereof will be appropriately omitted. In the two sets of molds 13 and 14 shown in FIG. 5, the third sliding mold core M, the door, and the fourth sliding mold core 19, 19 are interconnected by a third connecting member 3 丨 and a fourth connecting member 32, respectively. . The third connecting member 31 is connected to the first gas.

The piston rod 23a and the fourth connecting member of the cylinder 23 are connected to the piston rod 24a of the second cylinder. That is, in this embodiment, two third sliding mold cores are driven by one cylinder (first cylinder 23), and two fourth sliding mold cores are driven by one cylinder (first cylinder 24). As such, it is provided that two third sliding mold cores 18, 18 are driven by one first cylinder 23, and two fourth sliding mold cores 19, 19 are driven by one second cylinder 24 The structured casting machine 'constitutes the casting machine of claim 3. By adopting this structure, compared with four second and fourth sliding mold cores ΐ8 and 19 which are driven by cylinders, respectively, it can not only reduce the number of cylinders used, but also reduce the setting of the casting machine Π. take up space. As described above, the two third sliding mold cores 18 and 18 move integrally and the two fourth sliding mold cores 19 and 19 move integrally. Therefore, in this embodiment, the auxiliary guide post 21 is provided only on the The niches of the four corners of the mold forming part. In addition, since there are four auxiliary guide posts 21, only the end of the tie rod 27 of the opening and closing device 22 on the side of the first sliding mold core 16 is supported by the auxiliary guide posts 21 so as to be freely movable. According to the tie bar 27 of this embodiment, among the molds 13 98765.doc -14-200534941 on the left side, one is arranged below the third sliding core 18 and the other is arranged above the fourth sliding core 19. In addition, one of the two tie bars of the right mold 14 is disposed above the third sliding mold core 18, and the other is disposed below the fourth sliding mold 19. By adopting this structure, it is possible to prevent the end on the second connecting member side of the two tie rods π of the mold 13 on the left side in FIG. 3 and FIG. 4 and the two tie rods 27 of the mold 14 on the right side in the same figure. The upper end portions on the side of the second connecting member 28 interfere with each other, and the second connecting members 28 of the two molds 13 and 14 are in close contact with each other. Furthermore, the third air cylinder 25 according to the present embodiment is fixed to a support member 34 supported on the base 12 via a guide 33 so as to be freely movable. In Figs. 3 and 4, the first to fourth sliding cores 16 to 19 are indicated by the symbol% in order to support the guide of the free sliding movement of the special sliding core on the base 12 in parallel. Below the above-mentioned base 12 with the two sets of molds 13 and 14 installed, as shown in FIG. 5, there is also a molten metal supply device 38 with a furnace body 36 and a furnace 37. Above the base 12 is positioned a support supported by a driving device 39. Upper mold ", 40. In this embodiment, the lower molds 15 and 15 are held by the supporting member 12a fixed to the base 12. The furnace body 36 includes a main body 41 which is formed to open upward. A box-shaped body; a cover body 42 that closes the opening of the upper part of the main body 41; a furnace 37 that stores molten metal 43; and a hot runner 44 that is installed on the cover body 42 and immersed at the lower end In the above-mentioned molten metal 43. The main body 41 of this furnace body 36 has a built-in heater (not shown) which melts the metal in the melting furnace 37 ^: molten metal "force" to 4 degrees 疋 / jel degree And is connected to a pressurizing device 98765.doc -15- 200534941 (not shown). This pressurizing device is designed to supply inactive gas to the main body 41 during casting, and squeeze the molten metal 43 into a heat flow. In this embodiment, the above two sets of molds 13, 14 are Each k furnace 37 supplies molten metal 43. In detail, in the casting machine 11 of this embodiment, the lower mold 15 is held on the supporting member 12a fixed on the base 12 and the lower mold 15 The sprue 45 (see FIG. 5) is connected to a funnel-shaped gate 46 supported by the support member 12a, and a hot runner 44 is connected through the funnel-shaped gate 46. The hot runner 44 and the funnel-shaped gate 46 are provided. At each of the sprues 45 (each of the molds 13 and 14). The lower ends of the two hot runner materials are immersed in the same melting furnace 37. On the other hand, the above-mentioned driving device provided on the upper part of the base 12 39 has: a tie rod 51 that extends upward from the four corners of the base 12; and a pressure plate 52 that is held in the middle of the tie rod to be liftable. The pressure plate 52 is located in Figures 3 to 5 The upper mold 40 on the left mold 13 and the upper mold 4G on the right mold 14 on the right are raised and lowered by a motor (not shown). The upper mold 40 shown in FIG. The casting product is demolded from the lower mold 15 together with the upper mold 40 and the cast product is solidified. In the state of the above-mentioned mold 40. In the casting machine constructed as described above, the first sliding mold core 16 and the second sliding mold can be driven by the first air cylinder 25 located on the first sliding mold side. Therefore, there is no need to occupy the outer side of the first sliding mold core 17 for the purpose of arranging the cylinder. In the embodiment A, although the above-mentioned occupied space is equipped with other nuclear tools, the tungsten manufacturing machine with only one set of molds can help compared with the past. The casting machine reduces the above-mentioned occupied space and becomes more compact. 98765.doc -16- 200534941 As shown in this embodiment, a plurality of arrays are arranged adjacently to the second sliding mold core 17 that does not require the occupied space for the cylinder arrangement. These molds can be arranged close to each other, and a plurality of molds 13 and 14 can be arranged side by side in a small installation space. In addition, the casting machine shown in FIGS. 3 to 5 adopts a structure in which an upper die driving device 39 is used to lift and lower the upper die 40 of the plurality of die sets 13 and 14 located on the base 12. Compared with the case where the upper mold driving devices are respectively provided for the complex molds 13 and 14, the number of driving devices for the upper mold can be reduced, and the space occupied by the casting machine can be reduced. Therefore, even if a plurality of molds are arranged, a miniaturized casting machine can be formed. In addition, the casting machine shown in FIGS. 3 to 5 uses a structure in which a plurality of molten metal supply devices 38 are used to supply molten metal to the plurality of molds 13 and 14 located on the base 12. In the case where the molten metal supply device is separately provided for the plurality of molds 13 and buckets, the number of molten metal supply devices can be reduced, and the space occupied by the casting machine can be reduced. Therefore, even if a plurality of molds are arranged, a miniaturized casting machine can be formed. In the above-mentioned casting machine 11, two sliding mold cores (the first sliding mold core 16 and the second sliding mold core 17) can be driven by one air cylinder (the third air cylinder 25). Therefore, compared with each sliding mold core In the case of a cylinder, the number of cylinders can be reduced. Therefore, the addition of the molten metal supply device 38 and the upper mold driving device 39 is shared by the two molds 13, 14 to reduce the number of parts and contribute to cost reduction. In addition, in addition to the embodiments shown in Figs. 3 to 5, four sets of molds shown in Figs. 2 and 2 98765.doc 200534941 can also be arranged on the abutment 12 side by side in a field shape in plan view, and The third and fourth sliding mold cores 18 and 19 and the first and second air cylinders 23 and 24 driving them adopt the same driving method as the first and second sliding molds Dan 16 and 17. In detail, a mold set including two sets of molds 13 and 14 side by side in the left-right direction in FIG. 1 and FIG. 2 is arranged side by side above and below the same figure. The four mold sets are arranged in a field shape in plan view. On the abutment 12. By setting the molds as described above, the molds 13 on the left in Figures 丨 and 2 will be arranged side by side above and below the same figure, and the molds 14 on the other side will be arranged side by side above and below the same figure. Among the four sets of molds 13 and 14 arranged side by side, the first cylinder 23 of the molds 13 and 14 included in the mold group located on the upper side of the field shape is supported on the base 12 so as to be movable in the axial direction. The cylinder main body of the air cylinder 23 is connected to the fourth slide core 19 via a connection member and is capable of interlocking. Even in the case of adopting this structure, a stopper for stopping the third slide core 18 in the fully open position is provided on the base table 12. By adopting this structure, the third and fourth sliding mold cores 18 and 19 can be driven by the first cylinder 23 without the second cylinder 24. On the other hand, the molds 13 of the mold group located on the lower side of the field shape 14 is formed to be symmetrical with the molds 13 and 14 located on the upper side in the vertical direction. That is, the molds 13 and 14 of the mold set on the lower side can drive the third and fourth sliding mold cores 18 and 19 by the second cylinder 24, and the first cylinder M is not required. With such a configuration, the distance between the two mold sets can be reduced, which contributes to the miniaturization of the casting machine, and four sets of molds 13 and 14 can be arranged. [Brief description of the drawings] 98765.doc -18- 200534941 Structure of the mold core Figure 1 is a plan view showing the mold T k l T of the casting machine of the present invention and the sliding structure. Fig. 2 is a plan view showing the structure of a lower mold and a sliding core of a casting machine according to the present invention. FIG. 3 is a plan view showing a lower mold and a sliding core in a clamping state. FIG. 4 is a plan view showing a lower mold and a sliding core in a mold opening state. Fig. 5 is a longitudinal sectional view showing a specific example of a casting machine according to the present invention.

6 (a) and 6 (b) are plan views showing the structure of a conventional casting machine having four sliding cores. [Description of Symbols of Main Components] 11 Each machine 12 Abutment 13 Mold 14 Mold 15 Lower mold 16 First sliding mold core 17 Second sliding mold core 18 Third sliding mold core 19 Fourth sliding mold core 20 Mold cavity 21 Auxiliary corner post 22 Opening and closing device 23 First gas red 23a Piston rod 98765.doc -19- 200534941 23b Cylinder body 24 Second cylinder 24a Piston rod 24b Cylinder body 25 Third cylinder 25a Piston rod 25b Cylinder body 26 First connecting member 27 Tie rod 28 second link member 29 stopper 34 support member. 98765.doc -20

Claims (1)

200534941 Scope of patent application: 1. A casting machine, characterized in that it is composed of the upper mold, the lower mold and the sliding core to form a mold, the lower mold is fixed on the abutment, and the first and the second opposite to each other Two sliding mold cores are arranged on the abutment to be able to move freely 'to open and close these sliding mold cores with one cylinder' and to branch the gas red body of the above-mentioned cylinder outside the first / month moving mold core. Its axis direction is parallel to the opening and closing direction of the first sliding mold core and can be freely moved in the opening and closing direction. The second sliding mold core is connected to the cylinder body through a connecting member to make it interlock; The piston rod is connected to the first sliding die core, and a stopper that restricts the movement of the 6th sliding die in the opening direction to the fully open position is set on the abutment. 2. The casting machine of Erqing seeking item 1, wherein the molds having the first and second sliding mold cores and the breast cylinder are provided with a plurality of arrays on one abutment, and the molds are arranged side by side on one abutment to form The second sliding cores are adjacent to each other. 3. = Casting machine, which is provided with two sets of first and second sliding molds I, 'The third and fourth sliding mold cores which are opposite to each other are respectively set in this mold, and this is counted as the first The second and fourth sliding mold cores are located on the side of one of the above molds. ≪ gg _ 1 l The second sliding mold cores are connected to be interconnected and will be located at the above-mentioned mold. The fourth sliding mold cores on the side are connected to form a cylinder having a gas red that can drive the third sliding mold cores and a drive of the fourth sliding mold cores. 4 · If 1 # 1 above the town group mold of Qingqing term 2 or 3, there is a structure that lifts and lowers the plural I located on the base table with a drive device for the upper mold 98765.doc 200534941. 5 A casting machine as claimed in claim 2 or 3, which has a structure for supplying molten metal to a plurality of molds on a base by a molten metal supply device. 98765.doc