Die-casting machines and molds for die-casting machines

Abstract

We provide die-casting machines that enable shorter cycle times. [Solution] The die-casting machine of the embodiment comprises a fixed die plate, a movable die plate, a fixed mold held by the fixed die plate and including a casting port, a movable mold held by the movable die plate opposite the fixed mold, a closure block in which a portion is inserted into the casting port, a main block that forms a cavity between itself and the fixed mold into which molten metal can be filled, a first actuator that moves the closure block horizontally relative to the main block, a guide rod with one end fixed to the closure block and sliding horizontally relative to the main block, a clamping device that clamps the fixed mold and the movable mold together, and an injection device that fills the cavity with molten metal from the casting port.

Description

Technical Field

[0001] The present invention relates to a die-casting machine and a mold for a die-casting machine.

Background Art

[0002] In a horizontal die-casting machine in which the mold opening / closing direction and the injection direction are horizontal, if molten metal is supplied to the injection sleeve before the fixed mold and the movable mold are closed, that is, before mold closing, the molten metal will flow down between the molds. Therefore, the supply of molten metal to the injection sleeve is generally performed after mold closing. Since the supply of molten metal to the injection sleeve is performed after mold closing, the cycle time for manufacturing die-cast products becomes long.

[0003] Patent Document 1 describes a die-casting machine that can perform pouring into an injection sleeve before mold closing by providing a sprue core that is separated from the movable mold and can be inserted into the pouring port of the fixed mold.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the present invention is to provide a die-casting machine capable of shortening the cycle time.

Means for Solving the Problems

[0006] A die-casting machine according to one aspect of the present invention comprises a fixed die plate, a movable die plate, a fixed mold held by the fixed die plate and including a casting port, a movable mold held by the movable die plate opposite to the fixed mold, a closure block with a portion inserted into the casting port, a main block forming a cavity between itself and the fixed mold into which molten metal can be filled, a first actuator for moving the closure block horizontally relative to the main block, a guide rod with one end fixed to the closure block and sliding horizontally relative to the main block, a clamping device for clamping the fixed mold and the movable mold, and an injection device for filling the cavity with molten metal from the casting port.

[0007] In the die-casting machine according to the above embodiment, the injection device preferably includes an injection sleeve having a hot water inlet for supplying the molten metal and connected to the casting port, and a hopper connected to the hot water inlet.

[0008] In the die-casting machine according to the above embodiment, the closure block preferably has a first portion including the part and a second portion to which one end of the guide rod is connected and which is movable horizontally independently of the first portion, and the movable type preferably further includes a second actuator for moving the guide rod horizontally.

[0009] In the die-casting machine according to the above embodiment, it is preferable that the movable mold further includes a sensor for monitoring the horizontal position of the first part.

[0010] In the die-casting machine according to the above embodiment, it is preferable that the first portion is movable toward the fixed mold side than the second portion.

[0011] In the die-casting machine according to the above embodiment, it is preferable that the first part can completely close the casting port.

[0012] In the die-casting machine according to the above embodiment, it is preferable that the injection device includes an injection sleeve having a hot water inlet and an air vent, wherein molten metal is supplied from the hot water inlet to the injection sleeve, the air vent is provided on the side of the fixed mold relative to the hot water inlet, and the injection sleeve is connected to the casting port.

[0013] In the die-casting machine according to the above embodiment, it is preferable that the main block of the movable mold is made of metal, and the part of the movable mold is made of ceramics.

[0014] A die-casting machine according to another aspect of the present invention comprises: a fixed die plate capable of holding a fixed mold including a casting port; a movable die plate capable of holding a movable mold opposite to the fixed mold, wherein the movable mold includes a closure block, partly inserted into the casting port; a main block forming a cavity between itself and the fixed mold into which molten metal can be filled; a first actuator for moving the closure block horizontally relative to the main block; and a guide rod, one end of which is fixed to the closure block and which slides horizontally relative to the main block; a clamping device for clamping the fixed mold and the movable mold; and an injection device for filling the cavity with molten metal from the casting port.

[0015] The die-casting machine according to the above embodiment further includes a control device that controls the time for supplying the molten metal to the injection device and the time from when the main block of the movable mold starts moving forward until the fixed mold and the main block come into contact, so that they overlap at least in part.

[0016] In the die-casting machine according to the above embodiment, it is preferable that the control device inserts a portion of the closure block into the casting port using the first actuator during the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block come into contact, and after the portion of the closure block has been inserted into the casting port during the time from before the main block of the movable mold starts moving forward until the fixed mold and the main block come into contact, it starts supplying the molten metal to the injection device, and after the supply of the molten metal to the injection device has ended, it controls the injection device to fill the cavity with the molten metal.

[0017] In the die-casting machine according to the above embodiment, the closure block has a first portion including the part and a second portion to which one end of the guide rod is connected and which is movable horizontally independently of the first portion, the movable mold further includes a second actuator for moving the guide rod horizontally, and the control device advances the first portion of the closure block using the first actuator during the time from before the main block of the movable mold starts moving forward using the mold clamping device until the fixed mold and the main block come into contact, and during the time from before the main block of the movable mold starts moving forward using the mold clamping device until the fixed mold and the main block come into contact, Preferably, the second portion of the blocking block is advanced using the second actuator to bring it into contact with the fixed mold, and during the time from before the main block of the movable mold starts to advance until the fixed mold and the main block come into contact, the supply of molten metal to the injection device is started after the part of the blocking block is inserted into the casting port, and during the time from after the part of the blocking block is inserted into the casting port until the supply of molten metal to the injection device is finished, the first portion is advanced using the first actuator to completely close the casting port with the first portion, and after the supply of molten metal to the injection device is finished, the injection device is controlled to fill the cavity with molten metal.

[0018] The mold for a die-casting machine according to one aspect of the present invention includes a fixed mold including a pouring gate, a closing block partially inserted into the pouring gate, a main block forming a cavity capable of filling molten metal between the fixed mold, a first actuator moving the closing block horizontally with respect to the main block, and a movable mold including a guide rod having one end fixed to the closing block and sliding horizontally with respect to the main block.

[0019] In the mold for a die-casting machine according to the above aspect, the closing block has a first portion including the part and a second portion to which the one end of the guide rod is connected and capable of moving horizontally independently of the first portion, and it is preferable that the movable mold further includes a second actuator moving the guide rod horizontally.

[0020] In the mold for a die-casting machine according to the above aspect, it is preferable that the movable mold further includes a sensor monitoring the horizontal position of the first portion.

[0021] In the mold for a die-casting machine according to the above aspect, it is preferable that the first portion is movable closer to the fixed mold side than the second portion.

[0022] In the mold for a die-casting machine according to the above aspect, it is preferable that the first portion is capable of completely closing the pouring gate.

[0023] In the mold for a die-casting machine according to the above aspect, it is preferable that the main block of the movable mold is made of metal and the part of the movable mold is made of ceramics.

Advantages of the Invention

[0024] According to the present invention, it is possible to provide a die-casting machine capable of shortening the cycle time.

Brief Description of the Drawings

[0025] [Figure 1]Schematic diagram showing the overall configuration of the die-casting machine of the first embodiment. [Figure 2] Schematic cross-sectional view of the main part of the die-casting machine of the first embodiment. [Figure 3] Flow chart of the molding operation of the die-casting machine of the first embodiment. [Figure 4] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 5] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 6] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 7] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 8] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 9] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 10] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 11] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 12] Explanatory diagram of the molding operation using the die-casting machine of the first embodiment. [Figure 13] Schematic cross-sectional view of the main part of the die-casting machine of the modified example of the first embodiment. [Figure 14] Schematic cross-sectional view of the main part of the die-casting machine of the second embodiment. [Figure 15] Flow chart of the molding operation of the die-casting machine of the second embodiment. [Figure 16] Explanatory diagram of the molding operation using the die-casting machine of the second embodiment. [Figure 17] Explanatory diagram of the molding operation using the die-casting machine of the second embodiment. [Figure 18] Explanatory diagram of the molding operation using the die-casting machine of the second embodiment. [Figure 19]A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 20] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 21] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 22] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 23] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 24] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 25] A diagram illustrating the molding operation using the die-casting machine of the second embodiment. [Figure 26] A schematic cross-sectional view of the main part of a die-casting machine, a modified example of the second embodiment. [Modes for carrying out the invention]

[0026] Embodiments of the present invention will be described below with reference to the drawings.

[0027] In this specification, hydraulic pressure will be used as an example of hydraulic pressure. For example, a hydraulic mechanism will be used as an example of a hydraulic mechanism, and oil will be used as an example of a liquid that generates hydraulic pressure. It is also possible to use water pressure instead of hydraulic pressure. Furthermore, in this specification, hydraulic oil will be used as an example of a working fluid.

[0028] (First embodiment) The die-casting machine of the first embodiment comprises a fixed die plate, a movable die plate, a fixed mold held by the fixed die plate and including a casting port, a movable mold held by the movable die plate opposite the fixed mold, a closure block in which a portion is inserted into the casting port, a main block that forms a cavity between itself and the fixed mold into which molten metal can be filled, a first actuator that moves the closure block horizontally relative to the main block, a guide rod with one end fixed to the closure block and sliding horizontally relative to the main block, a clamping device that clamps the fixed mold and the movable mold, and an injection device that fills the cavity with molten metal from the casting port.

[0029] Furthermore, the die-casting machine of the first embodiment includes a fixed die plate capable of holding a fixed mold including a casting port, a movable die plate capable of holding a movable mold opposite the fixed mold, the movable mold including a closure block, part of which is inserted into the casting port, a main block that forms a cavity between itself and the fixed mold into which molten metal can be filled, a first actuator that moves the closure block horizontally relative to the main block, and a guide rod, one end of which is fixed to the closure block and slides horizontally relative to the main block, a clamping device that clamps the fixed mold and the movable mold together, an injection device that fills the cavity with molten metal from the casting port, and a control device that controls the time for supplying molten metal to the injection device and the time from the start of the main block of the movable mold until the fixed mold and the main block come into contact to overlap in at least part of the time.

[0030] Furthermore, the die for the die-casting machine of the first embodiment includes a fixed mold including a casting port, a movable mold including a closure block which is partially inserted into the casting port, a main block which forms a cavity between itself and the fixed mold into which molten metal can be filled, a first actuator which moves the closure block horizontally relative to the main block, and a guide rod which has one end fixed to the closure block and slides horizontally relative to the main block.

[0031] Figure 1 is a schematic diagram showing the overall configuration of the die-casting machine according to the first embodiment. Figure 1 is a side view, including a cross-sectional view in part.

[0032] The die-casting machine 100 of the first embodiment is a cold chamber type die-casting machine.

[0033] The die-casting machine 100 comprises a clamping device 10, an extrusion device 12, an injection device 14, a mold 16 (a die-casting machine mold), and a control unit 20. The mold 16 is an example of a die-casting machine mold.

[0034] The die-casting machine 100 comprises a base 22, a fixed die plate 24, a movable die plate 26, a link housing 28, and a tie bar 30.

[0035] The die-casting machine 100 is a machine that manufactures die-cast products by injecting and filling the inside of a mold 16 (cavity Ca in Figure 1) with liquid metal (molten metal) and allowing the liquid metal to solidify inside the mold 16. The metal can be, for example, aluminum, aluminum alloy, zinc alloy, or magnesium alloy.

[0036] The mold 16 includes a fixed mold 16a and a movable mold 16b. The mold 16 is located between the clamping device 10 and the injection device 14.

[0037] The fixed die plate 24 is fixed on the base 22. The fixed die plate 24 is capable of holding the fixed mold 16a.

[0038] The movable die plate 26 is mounted on the base 22 so as to be movable in the mold opening and closing direction. The mold opening and closing direction refers to both the mold opening direction and the mold closing direction as shown in Figure 1. The movable die plate 26 is capable of holding the movable mold 16b opposite the fixed mold 16a.

[0039] The link housing 28 is mounted on the base 22. One end of the link mechanism that constitutes the clamping device 10 is fixed to the link housing 28.

[0040] The fixed die plate 24 and the link housing 28 are secured by tie bars 30. The tie bars 30 support the clamping force while it is being applied to the fixed mold 16a and the movable mold 16b.

[0041] The mold clamping device 10 has the function of opening and closing the mold 16 and clamping it. The mold clamping device 10 uses, for example, a link mechanism to open and close the mold 16 and clamp it.

[0042] The injection device 14 has the function of injecting molten metal into the cavity Ca of the mold 16 to fill it and pressurizing the molten metal. The injection device 14 includes an injection sleeve 40, a plunger tip 41, a plunger rod 42, an injection actuator 44, and a support member 46. The injection sleeve 40 includes a molten metal inlet 40a.

[0043] The injection sleeve 40 leads to the cavity Ca formed in the mold 16. The injection sleeve 40 extends horizontally. The injection sleeve 40 extends perpendicular to the vertical direction.

[0044] The injection sleeve 40 is, for example, a cylindrical member connected to the fixed mold 16a. The injection sleeve 40 is, for example, cylindrical in shape.

[0045] The plunger rod 42 slides within the injection sleeve 40. The plunger rod 42 extends horizontally.

[0046] A plunger tip 41 can be attached to one end of the plunger rod 42. The plunger tip 41, fixed to the plunger rod 42, slides back and forth within the injection sleeve 40. As the plunger tip 41 slides forward within the injection sleeve 40, the molten metal inside the injection sleeve 40 is pushed into the mold 16.

[0047] The plunger rod 42 pressurizes the molten metal after it has been filled into the cavity Ca of the mold 16, thereby applying pressure to the molten metal.

[0048] Molten metal can be supplied into the injection sleeve 40 from a hot metal inlet 40a provided in the injection sleeve 40. For example, molten metal can be supplied into the injection sleeve 40 from the hot metal inlet 40a by a ladle (not shown).

[0049] The plunger rod 42 is driven horizontally using an injection actuator 44. The injection actuator 44 is, for example, a hydraulic cylinder.

[0050] The support member 46, for example, fixes the injection actuator 44 to the fixed die plate 24.

[0051] The extrusion device 12 has the function of pushing the manufactured die-cast product out of the mold 16.

[0052] Figure 2 is a schematic cross-sectional view of the main part of the die-casting machine of the first embodiment. Figure 2 shows a part of the die-casting machine 100, including the mold 16, fixed die plate 24, movable die plate 26, and injection device 14. Figure 2 shows the initial state before entering the cycle for manufacturing die-cast products.

[0053] The mold 16 includes a fixed mold 16a and a movable mold 16b. The fixed mold 16a is held in a fixed die plate 24. The movable mold 16b is held in a movable die plate 26.

[0054] The fixed mold 16a includes a casting port 51. The casting port 51 penetrates the fixed mold 16a. An injection sleeve 40 is connected to the casting port 51. The injection device 14 fills the cavity Ca of the mold 16 with molten metal from the casting port 51.

[0055] The movable type 16b includes a closure block 52, a main block 53, a first actuator 54, a closure block rod 55, and a guide rod 56. The closure block 52 includes a protrusion 52a (partially).

[0056] The closing block 52 is fitted into the main block 53. The closing block 52 can be separated from the main block 53. The closing block 52 can move horizontally independently of the main block 53. The protrusion 52a is inserted into the casting opening 51 of the fixed mold 16a.

[0057] The movable mold 16b contacts the fixed mold 16a, forming a cavity Ca between it and the fixed mold 16a that can be filled with molten metal. The main block 53 contacts the fixed mold 16a, forming a cavity Ca between it and the fixed mold 16a that can be filled with molten metal.

[0058] The main block 53 is, for example, made of metal. At least the protrusion 52a of the closure block 52 is, for example, made of ceramics.

[0059] The first actuator 54 moves the closing block 52 horizontally relative to the main block 53. The first actuator 54 moves the closing block 52 in the mold opening / closing direction relative to the main block 53.

[0060] The blocking rod 55 is included in the first actuator 54. One end of the blocking rod 55 is connected to the blocking block 52.

[0061] The first cylinder tube 54a of the first actuator 54 is fixed to the main block 53. The closure block rod 55 moves horizontally relative to the first cylinder tube 54a and the main block 53.

[0062] The first actuator 54 is, for example, an electric cylinder. The first actuator 54 is, for example, a hydraulic cylinder.

[0063] One end of the guide rod 56 is connected to the closure block 52. The guide rod 56 moves horizontally relative to the main block 53. The guide rod 56 slides horizontally relative to the main block 53. The guide rod 56 has the function of supporting the closure block 52.

[0064] As shown in Figure 2, the injection device 14 includes a hopper 48. The hopper 48 is connected to a molten metal inlet 40a. For example, molten metal is poured into the hopper 48 by a ladle (not shown) and supplied into the injection sleeve 40 through the molten metal inlet 40a.

[0065] By using the hopper 48, for example, the position of the hot water outlet 40a can be brought closer to the fixed type 16a.

[0066] As shown in Figure 1, the control unit 20 includes a control device 32, an input device 34, and a display device 36. The control unit 20 has the function of controlling the molding operation of the die-casting machine 100 using a clamping device 10, an extrusion device 12, and an injection device 14.

[0067] The input device 34 receives input from the operator. The operator can use the input device 34 to set molding conditions and other parameters of the die-casting machine 100. The input device 34 is, for example, a touch panel using a liquid crystal display or an organic EL display.

[0068] The display device 36 displays, for example, the molding conditions and operating status of the die-casting machine 100 on its screen. The display device 36 is, for example, a liquid crystal display or an organic EL display.

[0069] The input device 34 and the display device 36 may, for example, be a single display.

[0070] The control device 32 has the function of performing various calculations and outputting control commands to each part of the die-casting machine 100. The control device 32 has the function of storing, for example, molding conditions. The control device 32 has the function of controlling, for example, the operation of the clamping device 10, the extrusion device 12, and the injection device 14.

[0071] The control device 32 is composed of, for example, a combination of hardware and software. The control device 32 includes, for example, a CPU (Central Processing Unit), semiconductor memory, and a control program stored in the semiconductor memory.

[0072] The control device 32 controls the die-casting machine 100 such that the time for supplying molten metal to the injection sleeve 40 and the time from when the main block 53 of the movable mold 16b starts moving forward until the fixed mold 16a and the main block 53 come into contact overlap in at least part of the time.

[0073] The control device 32 controls the die-casting machine 100 to insert the protrusion 52a of the closing block 52 into the casting port 51 using the first actuator 54 during the time from before the main block 53 of the movable mold 16b starts moving forward using the clamping device 10 until the main block 53 comes into contact with the fixed mold 16a. The control device 32 then controls the die-casting machine 100 to start supplying molten metal to the injection sleeve 40 of the injection device 14 after the protrusion 52a of the closing block 52 has been inserted into the casting port 51 during the time from before the main block 53 of the movable mold 16b starts moving forward until the main block 53 comes into contact with the fixed mold 16a. The control device 32 then controls the die-casting machine 100 to start supplying molten metal to the injection sleeve 40 using the injection device 14 after the supply of molten metal to the injection sleeve 40 has finished.

[0074] Next, the molding operation using the die-casting machine of the first embodiment will be explained with reference to Figures 2 to 12.

[0075] Figure 3 is a flowchart of the molding operation of the die-casting machine according to the first embodiment. Figures 4 to 12 are explanatory diagrams of the molding operation using the die-casting machine according to the first embodiment. Figures 4 to 12 correspond to Figure 2.

[0076] The molding operation of the die-casting machine 100 in the first embodiment, as shown in Figure 3, includes an initial state step (S01), a main block advancement start step (S02), a main block contact step (S03), a mold clamping step (S04), a closure block advancement start step (S05), a closure block insertion step (S06), a hot water supply start step (S07), a hot water supply end step (S08), an injection operation step (S09), a mold opening step (S10), and a product removal step (S11).

[0077] In the molding operation of the die-casting machine 100 of the first embodiment, the operations from the main block advancement start step (S02) to the mold clamping step (S04) and from the closing block advancement step (S05) to the molten metal supply end step (S08) are performed in parallel between the initial state step (S01) and the injection operation step (S09).

[0078] First, the die-casting machine 100 is in the initial state step (S01) (Figure 2). The initial state is the so-called mold open state.

[0079] Next, in the main block advancement start step (S02), the link housing 28 and the movable die plate 26 begin to advance in the mold closing direction (Figure 4). The link housing 28 and the movable die plate 26 advance horizontally using the mold clamping device 10.

[0080] The movable mold 16b, fixed to the movable die plate 26, also moves forward in the mold closing direction. The main block 53 and the closing block 52, which are part of the movable mold 16b, also move forward in the mold closing direction.

[0081] Next, in the closing block advancement start step (S05), the closing block 52 is advanced in the mold closing direction (Figure 5). The closing block 52 is advanced using the first actuator 54. The closing block 52 advances while separating from the main block 53. The closing block 52 is supported by a guide rod 56 that slides relative to the main block 53.

[0082] It is also possible to perform the block advance start step (S05) before the main block advance start step (S02). In other words, it is possible to advance only the block 52 before the main block 53 advances.

[0083] Next, in the blocking block insertion step (S06), the protrusion 52a of the blocking block 52 is inserted into the casting port 51 (Figure 6). The protrusion 52a is inserted into the casting port 51 using the first actuator 54.

[0084] Next, in the molten metal supply start step (S07), the supply of molten metal 47 to the injection sleeve 40 is started (Figure 7). The molten metal 47 is poured, for example, from the ladle 49 into the hopper 48. The molten metal 47 is supplied from the hopper 48 through the molten metal inlet 40a into the injection sleeve 40.

[0085] In the molten metal supply start step (S07), for example, the main block 53 of the movable mold 16b and the fixed mold 16a are not in contact, and mold clamping is not yet complete. However, because the inlet 51 is blocked by the protrusion 52a of the blocking block 52, the molten metal 47 supplied into the injection sleeve 40 does not spill out of the inlet 51.

[0086] Next, in the molten metal supply termination step (S08), the supply of molten metal 47 to the injection sleeve 40 is terminated (Figure 8).

[0087] Next, in the main block contact step (S03), the main block 53 comes into contact with the fixed mold 16a (Figure 9). Then, in the mold clamping step (S04), the movable mold 16b and the fixed mold 16a are clamped together (Figure 9). The clamping of the movable mold 16b and the fixed mold 16a is performed using the mold clamping device 10.

[0088] The main block contact step (S03) and the mold clamping step (S04) may be performed before the hot water supply termination step (S08).

[0089] Next, in the injection operation step (S09), the molten metal 47 is filled into the cavity Ca formed between the main block 53 and the fixed mold 16a (Figure 10). Subsequently, the molten metal 47 cools and solidifies, forming the die-cast product 99.

[0090] Next, in the mold opening step (S10), the link housing 28 and the movable die plate 26 retract in the mold opening direction (Figure 11). The link housing 28 and the movable die plate 26 retract horizontally using the mold clamping device 10. The link housing 28 and the movable die plate 26 retract, for example, to the mold opening limit position.

[0091] The movable mold 16b, which is fixed to the movable die plate 26, also retracts in the mold opening direction. The main block 53 and the closing block 52, which are part of the movable mold 16b, also retract in the mold opening direction.

[0092] In the mold opening step (S10), for example, the die-cast product 99 is pushed out in the mold opening direction using the injection device 14. The die-cast product 99 is pushed out in the mold opening direction by the plunger tip 41.

[0093] Next, in the product removal step (S11), the die-cast product 99 is pushed out from the movable mold 16b (Figure 12). The die-cast product 99 is pushed out using the extruder 12.

[0094] The die-cast product 99 is extruded, for example, using the ejection pin 12a of the extrusion device 12. Alternatively, the die-cast product 99 can be extruded using, for example, the occlusion block 52. The extruded die-cast product 99 is recovered, for example, by a robotic arm (not shown).

[0095] Subsequently, the die-casting machine 100 returns to the initial state step (S01) shown in Figure 2. Through these steps, the die-cast product 99 is manufactured. Thereafter, the same steps as above are repeated to manufacture the next die-cast product 99.

[0096] Next, the operation and effects of the die-casting machine and the mold for the die-casting machine according to the first embodiment will be described.

[0097] The mold 16 used in the die-casting machine 100 of the first embodiment includes a movable mold 16b which comprises a closure block 52 and a main block 53. The closure block 52 is independently movable relative to the main block 53 using a first actuator 54. The protrusion 52a of the closure block 52 can be inserted into the casting opening 51 of the fixed mold 16a.

[0098] Before the main block 53 contacts the fixed mold 16a, the inlet 51 of the fixed mold 16a can be blocked by the protrusion 52a of the blocking block 52. Therefore, the supply of molten metal 47 into the injection sleeve 40 can be started before the main block 53 contacts the fixed mold 16a and forms a cavity Ca. Consequently, there is no need to wait until the movable mold 16b and the fixed mold 16a come into contact and a cavity Ca is formed before starting the supply of molten metal 47 into the injection sleeve 40. Thus, the cycle time for manufacturing die-cast products 99 in the die-casting machine 100 can be shortened.

[0099] In other words, by using the mold 16 having the above configuration, the control device 32 of the die-casting machine 100 can control the time for supplying molten metal 47 to the injection sleeve 40 and the time from when the main block 53 of the movable mold 16b starts moving forward until the fixed mold 16a and the main block 53 come into contact, so that they overlap at least partially. Therefore, the cycle time for manufacturing die-cast products 99 in the die-casting machine 100 can be shortened.

[0100] Furthermore, the movable type 16b includes a guide rod 56 that supports the closing block 52 and slides relative to the main block 53. The guide rod 56 supports the closing block 52, which stabilizes its movement in the closing direction. Therefore, for example, the horizontal movement of the closing block 52 relative to the main block 53 can be increased.

[0101] Furthermore, the injection device 14 of the die-casting machine 100 is equipped with a hopper 48 connected to the hot metal inlet 40a of the injection sleeve 40. By providing the hopper 48, even when the hot metal inlet 40a of the injection sleeve 40 is brought close to the fixed die plate 24, it is possible to supply molten metal 47 into the injection sleeve 40. Therefore, the length of the injection sleeve 40 can be shortened compared to when the hopper 48 is not used. By shortening the length of the injection sleeve 40, the filling rate of the molten metal 47 can be increased. Thus, for example, the quality of the die-cast product 99 is improved.

[0102] It is preferable that at least the protrusion 52a of the blocking block 52 is made of ceramic. Having at least the protrusion 52a of the blocking block 52 made of ceramic improves the heat insulation effect of the blocking block 52. Therefore, for example, a cooling mechanism for the movable type 16b becomes unnecessary.

[0103] Furthermore, by making at least the protrusion 52a of the closure block 52 out of ceramic, the solidified molten metal 47 becomes easier to peel off compared to when the closure block 52 is made of metal. Therefore, for example, the amount of biscuit residue left on the movable mold 16b is suppressed.

[0104] (modified version) The die-casting machine of the modified embodiment differs from the die-casting machine of the first embodiment in that the injection sleeve is inserted into a fixed casting port.

[0105] Figure 13 is a schematic cross-sectional view of the main part of a die-casting machine of a modified example of the first embodiment. Figure 13 is a side view including a cross-sectional view in part. Figure 13 corresponds to Figure 2 of the first embodiment.

[0106] As shown in Figure 13, in the modified die-casting machine of the first embodiment, the injection sleeve 40 is inserted into the casting port 51 of the fixed mold 16a.

[0107] As described above, according to the first embodiment and its modifications, a die-casting machine and a mold for the die-casting machine that can shorten the cycle time can be realized.

[0108] (Second embodiment) The die-casting machine of the second embodiment differs from the die-casting machine of the first embodiment in that the closure block has a first part including a portion and a second part to which one end of a guide rod is connected and which is movable horizontally independently of the first part, and the movable part further includes a second actuator for moving the guide rod horizontally.

[0109] Furthermore, in the die-casting machine of the second embodiment, the closing block has a first part including a portion and a second part to which one end of a guide rod is connected and which is movable horizontally independently of the first part, the movable mold further includes a guide rod and a second actuator for moving the guide rod horizontally, and the control device advances the first part of the closing block using the first actuator and inserts a portion into the casting port during the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block make contact, and during the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block make contact This invention differs from the die-casting machine of the first embodiment in that, a second portion of the closure block is advanced using a second actuator to bring it into contact with the fixed mold, and during the time from before the main block of the movable mold starts to advance until the fixed mold and the main block come into contact, after a portion of the closure block has been inserted into the casting port, the supply of molten metal to the injection device is started, and between the time a portion of the closure block has been inserted into the casting port and the supply of molten metal to the injection device is finished, the first portion is advanced using a first actuator to completely close the casting port with the first portion, and after the supply of molten metal to the injection device is finished, the injection device is controlled to fill the cavity with molten metal.

[0110] Furthermore, the mold for the die-casting machine of the second embodiment differs from the mold for the die-casting machine of the first embodiment in that the closing block has a first part including a portion and a second part to which one end of the guide rod is connected and which is movable horizontally independently of the first part, and the movable mold further includes a guide rod and a second actuator that moves the guide rod horizontally.

[0111] In the following, some descriptions may be omitted if they overlap with those of the first embodiment.

[0112] Figure 14 is a schematic cross-sectional view of the main part of the die-casting machine of the second embodiment. Figure 14 shows a part of the mold 16, fixed die plate 24, movable die plate 26, and injection device 14 of the die-casting machine of the second embodiment. Figure 14 shows the initial state before entering the cycle for manufacturing die-cast products. Figure 14 corresponds to Figure 2 of the first embodiment.

[0113] The mold 16 includes a fixed mold 16a and a movable mold 16b. The fixed mold 16a is held in a fixed die plate 24. The movable mold 16b is held in a movable die plate 26.

[0114] The fixed mold 16a includes a casting port 51. The casting port 51 penetrates the fixed mold 16a. An injection sleeve 40 is connected to the casting port 51.

[0115] The movable type 16b includes a closure block 52, a main block 53, a first actuator 54, a closure block rod 55, a guide rod 56, and a stroke sensor 58 (sensor). The closure block 52 includes a closure portion 52x (first portion), a main portion 52y (second portion), and a protrusion 52a (part). The protrusion 52a is included in the closure portion 52x.

[0116] The closing block 52 is fitted into the main block 53. The closing block 52 can be separated from the main block 53. The closing block 52 is movable independently of the main block 53. The protrusion 52a is inserted into the casting opening 51 of the fixed mold 16a.

[0117] The closure section 52x can be separated from the main section 52y. The closure section 52x can move horizontally independently of the main section 52y. The closure section 52x can move horizontally using the first actuator 54. The main section 52y can move horizontally using the second actuator 57. One end of the guide rod 56 is connected to the main section 52y.

[0118] The closing portion 52x is movable toward the fixed mold 16a side than the main portion 52y. The closing portion 52x can completely seal the casting opening 51.

[0119] The movable mold 16b contacts the fixed mold 16a, forming a cavity Ca between it and the fixed mold 16a that can be filled with molten metal. The main block 53 contacts the fixed mold 16a, forming a cavity Ca between it and the fixed mold 16a that can be filled with molten metal.

[0120] The main block 53 is, for example, made of metal. At least the protrusion 52a of the closure block 52 is, for example, made of ceramics.

[0121] The first actuator 54 moves the closing portion 52x of the closing block 52 horizontally relative to the main block 53. The first actuator 54 moves the closing portion 52x in the opening and closing direction relative to the main block 53 and the main portion 52y of the closing block 52.

[0122] The closure block rod 55 is included in the first actuator 54. One end of the closure block rod 55 is connected to the closure portion 52x of the closure block 52.

[0123] The first cylinder tube 54a of the first actuator 54 is fixed to the main block 53. The closure block rod 55 moves horizontally relative to the first cylinder tube 54a and the main block 53.

[0124] The first actuator 54 is, for example, an electric cylinder or a hydraulic cylinder.

[0125] The stroke sensor 58 monitors, for example, the horizontal position of the blockage portion 52x.

[0126] The second actuator 57 moves the main part 52y of the closing block 52 horizontally relative to the main block 53 and the closing part 52x. The second actuator 57 moves the main part 52y in the opening and closing direction relative to the main block 53 and the closing part 52x of the closing block 52.

[0127] The guide rod 56 is included in the second actuator 57. One end of the guide rod 56 is connected to the main part 52y of the blockage block 52.

[0128] The second cylinder tube 57a of the second actuator 57 is fixed to the main block 53. The guide rod 56 moves horizontally relative to the second cylinder tube 57a and the main block 53.

[0129] One end of the guide rod 56 is connected to the main section 52y. The guide rod 56 moves horizontally relative to the main block 53. The guide rod 56 slides horizontally relative to the main block 53. The guide rod 56 has the function of supporting the closing block 52. The guide rod 56 has the function of supporting the main block 53.

[0130] The second actuator 57 is, for example, an electric cylinder or a hydraulic cylinder.

[0131] As shown in Figure 14, the injection device 14 includes a hopper 48. The hopper 48 is connected to a molten metal inlet 40a. For example, molten metal is poured into the hopper 48 by a ladle (not shown) and supplied into the injection sleeve 40 through the molten metal inlet 40a.

[0132] By using the hopper 48, for example, the position of the hot water outlet 40a can be brought closer to the fixed type 16a.

[0133] Furthermore, the injection device 14 has an air vent 40b on the fixed side 16a of the hot water inlet 40a. This allows air to be released from the air vent 40b as the plunger tip 41 moves forward inside the injection sleeve 40.

[0134] The control device 32 controls the die-casting machine so that the time for supplying molten metal to the injection sleeve 40 and the time from when the main block 53 of the movable mold 16b starts moving forward until the fixed mold 16a and the main block 53 come into contact overlap, at least in part.

[0135] The control device 32 controls the following: for example, from before the main block 53 of the movable mold 16b using the clamping device 10 starts moving forward until the main block 53 makes contact with the fixed mold 16a, the control device 32 moves forward the closing portion 52x of the closing block 52 using the first actuator 54 to insert the protrusion 52a into the casting port 51. The control device 32 controls the following: from before the main block 53 of the movable mold 16b using the clamping device 10 starts moving forward until the main block 53 makes contact with the fixed mold 16a, the control device 32 moves forward the main portion 52y of the closing block 52 using the second actuator 57 to make contact with the fixed mold 16a. The control device 32 controls the following: from before the main block 53 of the movable mold 16b starts moving forward until the main block 53 makes contact with the fixed mold 16a, and after the closing portion 52x of the closing block 52 has been inserted into the casting port 51, the control device 32 starts supplying molten metal 47 to the injection sleeve 40. After inserting the closure portion 52x of the closure block 52 into the casting port 51, the control device 32 uses the first actuator 54 to advance the closure portion 52x so that the protrusion 52a of the closure portion 52x completely closes the casting port 51 until the supply of molten metal 47 to the injection sleeve 40 is completed. After the supply of molten metal 47 to the injection sleeve 40 is completed, the control device 32 uses the injection device 14 to fill the cavity Ca with the molten metal 47.

[0136] Next, the molding operation using the die-casting machine of the second embodiment will be explained with reference to Figures 14 to 25.

[0137] Figure 15 is a flowchart of the molding operation of the die-casting machine according to the second embodiment. Figures 16 to 25 are explanatory diagrams of the molding operation using the die-casting machine according to the second embodiment. Figures 16 to 25 correspond to Figure 14.

[0138] The molding operation of the die-casting machine in the second embodiment, as shown in Figure 15, includes an initial state step (S01), a main block advancement start step (S02), a main block contact step (S03), a mold clamping step (S04), a closure block advancement start step (S05), a closure block insertion step (S06), a closure section advancement step (S20), a hot water supply start step (S07), a hot water supply end step (S08), an injection operation step (S09), a mold opening step (S10), and a product removal step (S11).

[0139] In the molding operation of the die-casting machine of the second embodiment, the operations from the main block advancement start step (S02) to the mold clamping step (S04) and from the closing block advancement start step (S05) to the molten metal supply end step (S08) are performed in parallel between the initial state step (S01) and the injection operation step (S09).

[0140] First, the die-casting machine is in the initial state step (S01) (Figure 14). The initial state is the so-called mold-open state.

[0141] Next, in the main block advancement start step (S02), the link housing 28 and the movable die plate 26 begin to advance in the mold closing direction (Figure 16). The link housing 28 and the movable die plate 26 advance horizontally using the mold clamping device 10.

[0142] The movable mold 16b, fixed to the movable die plate 26, also moves forward in the mold closing direction. The main block 53 and the closing block 52, which are part of the movable mold 16b, also move forward in the mold closing direction.

[0143] Next, in the closing block advancement start step (S05), the closing block 52 is advanced in the mold closing direction (Figure 17). The closing block 52 is advanced using the first actuator 54 and the second actuator 57. The closing portion 52x and the main portion 52y of the closing block 52 advance. For example, the first actuator 54 and the second actuator 57 move synchronously so that the closing portion 52x and the main portion 52y advance at the same speed.

[0144] The closure block 52 moves forward, separating from the main block 53. The closure block 52 is supported by a guide rod 56 that slides relative to the main block 53. The closure portion 52x of the closure block 52 is supported by a main portion 52y connected to the guide rod 56.

[0145] It is also possible to perform the block advance start step (S05) before the main block advance start step (S02). In other words, it is also possible to advance only the block 52 before the main block 53 advances.

[0146] Next, in the blocking block insertion step (S06), the protrusion 52a of the blocking portion 52x of the blocking block 52 is inserted into the casting port 51 (Figure 18). The protrusion 52a is inserted into the casting port 51 using the first actuator 54. For example, the main portion 52y of the blocking block 52 also moves forward simultaneously using the second actuator 57.

[0147] Next, in the blocking portion advancement step (S20), the blocking portion 52x of the blocking block 52 is advanced and inserted into the casting port 51 (Figure 19). The blocking portion 52x is inserted into the casting port 51 using the first actuator 54. The position of the blocking portion 52x is controlled, for example, based on the horizontal position monitored by the stroke sensor 58. For example, the main portion 52y of the blocking block 52 stops when it comes into contact with the fixed mold 16a.

[0148] The closure portion 52x blocks the pouring port 51. The fact that the closure portion 52x blocks the pouring port 51 means that molten metal 47 will not spill out from between the closure portion 52x and the fixed mold 16a.

[0149] Next, in the molten metal supply start step (S07), the supply of molten metal 47 to the injection sleeve 40 is started (Figure 20). The molten metal 47 is poured, for example, from the ladle 49 into the hopper 48. The molten metal 47 is supplied from the hopper 48 through the molten metal inlet 40a into the injection sleeve 40.

[0150] In the molten metal supply start step (S07), for example, the main block 53 of the movable mold 16b and the fixed mold 16a are not in contact, and mold clamping is not yet complete. However, since the inlet 51 is completely sealed by the occlusion section 52x, the molten metal 47 supplied into the injection sleeve 40 does not spill out of the inlet 51.

[0151] Furthermore, even if the inlet 51 is completely blocked by the occlusion 52x, the molten metal 47 can be supplied smoothly by allowing air to escape from the air vent 40b of the injection sleeve 40.

[0152] Next, in the molten metal supply termination step (S08), the supply of molten metal 47 to the injection sleeve 40 is terminated (Figure 21). The filling rate of the molten metal 47 in the injection sleeve 40 is, for example, 60% to 80%.

[0153] Next, in the main block contact step (S03), the main block 53 comes into contact with the fixed mold 16a (Figure 22). Then, in the mold clamping step (S04), the movable mold 16b and the fixed mold 16a are clamped together (Figure 22). The clamping of the movable mold 16b and the fixed mold 16a is performed using the mold clamping device 10.

[0154] The main block contact step (S03) and the mold clamping step (S04) may be performed before the hot water supply termination step (S08).

[0155] Next, in the injection operation step (S09), the molten metal 47 is filled into the cavity Ca formed between the main block 53 and the fixed mold 16a (Figure 23). The occluding portion 52x is pushed by the molten metal 47 and the plunger tip 41 and moves toward the main block 53 side of the movable mold 16b, forming a supply passage for the molten metal 47 to the cavity Ca. Subsequently, the molten metal 47 cools and solidifies, forming the die-cast product 99.

[0156] Next, in the mold opening step (S10), the link housing 28 and the movable die plate 26 retract in the mold opening direction (Figure 24). The link housing 28 and the movable die plate 26 retract horizontally using the mold clamping device 10. The link housing 28 and the movable die plate 26 retract, for example, to the mold opening limit position.

[0157] The movable mold 16b, which is fixed to the movable die plate 26, also retracts in the mold opening direction. The main block 53 and the closing block 52, which are part of the movable mold 16b, also retract in the mold opening direction.

[0158] In the mold opening step (S10), for example, the die-cast product 99 is pushed out in the mold opening direction using the injection device 14. The die-cast product 99 is pushed out in the mold opening direction by the plunger tip 41.

[0159] Next, in the product removal step (S11), the die-cast product 99 is pushed out from the movable mold 16b (Figure 25). The die-cast product 99 is pushed out using the extruder 12.

[0160] The die-cast product 99 is extruded, for example, using the extrusion pin 12a of the extrusion device 12. Alternatively, the die-cast product 99 can be extruded, for example, using the closing portion 52x of the closing block 52. The extruded die-cast product 99 is recovered, for example, by a robotic arm (not shown).

[0161] Subsequently, the die-casting machine returns to the initial state step (S01) shown in Figure 14. Through these steps, die-cast product 99 is manufactured. The same steps are then repeated to manufacture the next die-cast product 99.

[0162] Next, the operation and effects of the die-casting machine and the mold for the die-casting machine according to the second embodiment will be described.

[0163] The mold 16 used in the die-casting machine of the second embodiment includes a movable mold 16b which comprises a closure block 52 and a main block 53. The closure block 52 is independently movable relative to the main block 53 using a first actuator 54. The protrusion 52a of the closure block 52 can be inserted into the casting opening 51 of the fixed mold 16a.

[0164] Before the main block 53 contacts the fixed mold 16a, the inlet 51 of the fixed mold 16a can be blocked by the protrusion 52a of the blocking block 52. Therefore, the supply of molten metal 47 into the injection sleeve 40 can be started before the main block 53 contacts the fixed mold 16a and forms a cavity Ca. Consequently, there is no need to wait until the movable mold 16b and the fixed mold 16a come into contact and a cavity Ca is formed before starting the supply of molten metal 47 into the injection sleeve 40. Thus, the cycle time for manufacturing die-cast products in the die-casting machine can be shortened.

[0165] In other words, by using a mold 16 having the above configuration, the control device 32 of the die-casting machine can control the time for supplying molten metal 47 to the injection sleeve 40 and the time from when the main block 53 of the movable mold 16b starts moving forward until the fixed mold 16a and the main block 53 come into contact, so that they overlap at least partially. Therefore, the cycle time for manufacturing die-cast products 99 in the die-casting machine can be shortened.

[0166] Furthermore, the movable closure block 52 of the closure type 16b includes a closure portion 52x (first portion), a main portion 52y (second portion), and a protrusion 52a (partial portion). The protrusion 52a is included in the closure portion 52x.

[0167] The closing portion 52x can be separated from the main portion 52y. The closing portion 52x can move horizontally independently of the main portion 52y. Furthermore, the closing portion 52x can completely seal the casting opening 51.

[0168] The closure portion 52x completely seals the injection port 51, preventing the molten metal 47 supplied to the injection sleeve 40 from spilling out through the gap between the closure portion 52x and the fixed mold 16a. Therefore, the filling rate of the molten metal 47 in the injection sleeve 40 can be increased. For example, it is possible to achieve a filling rate of 60% or more of the molten metal 47 in the injection sleeve 40. Thus, for example, the quality of the die-cast product 99 is improved.

[0169] Furthermore, the injection device 14 of the die-casting machine is equipped with a hopper 48 connected to the hot metal inlet 40a of the injection sleeve 40. By providing the hopper 48, even when the hot metal inlet 40a of the injection sleeve 40 is brought close to the fixed die plate 24, it is possible to supply molten metal 47 into the injection sleeve 40. Therefore, the length of the injection sleeve 40 can be shortened compared to when the hopper 48 is not used. By shortening the length of the injection sleeve 40, the filling rate of the molten metal 47 can be increased. Thus, for example, the quality of the die-cast product 99 is improved.

[0170] It is preferable that at least the protrusion 52a of the blocking block 52 is made of ceramic. Having at least the protrusion 52a of the blocking block 52 made of ceramic improves the heat insulation effect of the blocking block 52. Therefore, for example, a cooling mechanism for the movable type 16b becomes unnecessary.

[0171] Furthermore, by making at least the protrusion 52a of the closure block 52 out of ceramic, the solidified molten metal 47 becomes easier to peel off compared to when the closure block 52 is made of metal. Therefore, for example, the amount of biscuit residue left on the movable mold 16b is suppressed.

[0172] (modified version) The die-casting machine of the modified second embodiment differs from the die-casting machine of the second embodiment in that the injection sleeve is inserted into a fixed casting port.

[0173] Figure 26 is a schematic cross-sectional view of the main part of a die-casting machine of a modified example of the second embodiment. Figure 26 is a side view including a cross-sectional view in part. Figure 26 corresponds to Figure 14 of the second embodiment.

[0174] As shown in Figure 26, in the modified die-casting machine of the second embodiment, the injection sleeve 40 is inserted into the casting port 51 of the fixed mold 16a.

[0175] As described above, according to the second embodiment and its modifications, a die-casting machine and a mold for the die-casting machine that can shorten the cycle time can be realized.

[0176] Embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. Parts of die-casting machines and molds for die-casting machines that are not directly necessary for describing the present invention have been omitted from the description, but elements related to die-casting machines and molds for die-casting machines that are necessary can be appropriately selected and used.

[0177] Furthermore, all injection molding machines and molding machines that incorporate elements of the present invention and can be appropriately modified by those skilled in the art are included within the scope of the present invention. The scope of the present invention is defined by the claims and their equivalents. [Explanation of Symbols]

[0178] 10 Mold clamping device 12 Extruder 14 Injection device 16 molds 16a Fixed type 16b Movable type 20 Control Units 22 base 24 Fixed die plate 26 Movable die plate 28 Link Housing 30 Tie Bar 32 Control device 34 Input devices 36 Display device 40 injection sleeves 40a hot water outlet 40b Air vent 41 Plunger Tip 42 Plunger Rod 44 Injection Actuator 47 Molten metal 48 Hopper 49 ladles 51. Inlet 52 Blocking Block 52a Convex part (partial) 52x Blockage (first part) 52y Main part (second part) 53 Major Blocks 54 First actuator 54a First cylinder tube 55 Blocking block rod 56 Guide Rod 57 Second actuator 57a Second cylinder tube 58 Stroke Sensor (Sensor) 99 Die-cast products 100 die-casting machines Ca cavity

Claims

1. Fixed die plate and A movable die plate, A fixed die plate is held in place and includes a casting port, A movable die plate is held opposite the fixed die, and the movable die includes a closure block, a portion of which is inserted into the casting port, a main block that forms a cavity between itself and the fixed die into which molten metal can be filled, a first actuator that moves the closure block horizontally relative to the main block, and a guide rod, one end of which is fixed to the closure block and which slides horizontally relative to the main block. A clamping device for clamping the fixed mold and the movable mold, An injection device for filling the cavity with molten metal from the injection port, A die-casting machine characterized by being equipped with [a specific feature].

2. The die-casting machine according to claim 1, characterized in that the injection device includes an injection sleeve having a hot water inlet for supplying the molten metal and connected to the casting port, and a hopper connected to the hot water inlet.

3. The blocking block has a first portion including the part, and a second portion to which one end of the guide rod is connected and which is movable horizontally independently of the first portion. The die-casting machine according to claim 1, further characterized in that the movable type includes a second actuator for moving the guide rod in a horizontal direction.

4. The die-casting machine according to claim 3, characterized in that the movable type further includes a sensor for monitoring the horizontal position of the first part.

5. The die-casting machine according to claim 3, characterized in that the first part is movable toward the fixed mold side than the second part.

6. The die-casting machine according to claim 3, characterized in that the first part can completely seal the casting port.

7. The injection device includes an injection sleeve having a hot water inlet and an air vent, The molten metal is supplied from the hot water inlet to the injection sleeve. The aforementioned air vent is provided on the fixed type side relative to the hot water outlet. The die-casting machine according to claim 3, characterized in that the injection sleeve is connected to the casting port.

8. The die-casting machine according to claim 1, characterized in that the main block of the movable type is made of metal, and the part of the movable type is made of ceramics.

9. A fixed die plate capable of holding a fixed mold including a casting port, A movable die plate capable of holding a movable die opposite to the fixed die, wherein the movable die plate includes a closure block, a portion of which is inserted into the casting port; a main block, which forms a cavity between itself and the fixed die into which molten metal can be filled; a first actuator for moving the closure block horizontally relative to the main block; and a guide rod, one end of which is fixed to the closure block and which slides horizontally relative to the main block. A clamping device for clamping the fixed mold and the movable mold, An injection device for filling the cavity with molten metal from the injection port, A die-casting machine characterized by being equipped with [a specific feature].

10. The die-casting machine according to claim 9, further comprising a control device that controls the time for supplying the molten metal to the injection device and the time from the start of the forward movement of the main block of the movable mold until the fixed mold and the main block come into contact, so that they overlap in at least part.

11. The control device is During the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block come into contact, a portion of the closing block is inserted into the casting opening using the first actuator. During the time from before the movable main block begins to move forward until the fixed mold and the main block come into contact, after inserting the part of the closing block into the casting port, the supply of the molten metal to the injection device is started. The die-casting machine according to claim 10, characterized in that, after the supply of molten metal to the injection device is completed, the injection device is controlled to fill the cavity with the molten metal.

12. The blocking block has a first portion including the part, and a second portion to which one end of the guide rod is connected and which is movable horizontally independently of the first portion. The movable type further includes a second actuator for moving the guide rod in a horizontal direction. The control device is During the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block come into contact, the first portion of the closing block is advanced using the first actuator and the portion is inserted into the casting opening. During the time from before the main block of the movable mold starts moving forward using the clamping device until the fixed mold and the main block come into contact, the second portion of the closing block is advanced using the second actuator to bring it into contact with the fixed mold. During the time from before the movable main block begins to move forward until the fixed mold and the main block come into contact, after inserting the part of the closing block into the casting port, the supply of the molten metal to the injection device is started. After inserting the portion of the blocking block into the casting port, and before the supply of molten metal to the injection device is completed, the first portion is advanced using the first actuator to completely block the casting port with the first portion. The die-casting machine according to claim 10, characterized in that, after the supply of molten metal to the injection device is completed, the injection device is controlled to fill the cavity with the molten metal.

13. A fixed mold including a casting spout, A movable mold comprising: a closure block, partly inserted into the casting port; a main block, forming a cavity between itself and the fixed mold into which molten metal can be filled; a first actuator for moving the closure block horizontally relative to the main block; and a guide rod, one end of which is fixed to the closure block and which slides horizontally relative to the main block. A die-casting machine mold characterized by having the following features.

14. The blocking block has a first portion including the part, and a second portion to which one end of the guide rod is connected and which is movable horizontally independently of the first portion. The mold for a die-casting machine according to claim 13, further comprising a second actuator for moving the guide rod in a horizontal direction.

15. The mold for a die-casting machine according to claim 14, further characterized in that the movable mold includes a sensor for monitoring the horizontal position of the first part.

16. The mold for a die-casting machine according to claim 14, characterized in that the first portion is movable toward the fixed mold side than the second portion.

17. The mold for a die-casting machine according to claim 14, characterized in that the first part can completely seal the casting opening.

18. The mold for a die-casting machine according to claim 14, characterized in that the main block of the movable mold is made of metal, and the part of the movable mold is made of ceramics.

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