JP2020025967A - Valve, mold and die casting machine - Google Patents

Abstract

To provide a valve having a large aperture area which can be closed in a short time.SOLUTION: A valve 109 opens and closes an exhaust flow path 113 for exhausting the inside of a mold 101. The valve 109 includes a closure part 127 moving between a close position and an open position in a z-direction. A valve body 125 has a plurality of inner ports 125a that are aligned in the z-direction and are open in ane x-direction intersecting the z-direction. The closure part 127 has a plurality of close parts 127a and a plurality of open parts 127b. The plurality of close parts 127a block the plurality of inner ports 125a from a -x side when the closure part 127 is at the close position. The plurality of open parts 127b open the plurality of inner ports 125a to the -x side when the closure part 127 is at the open position. The plurality of close parts 127a and the plurality of open parts 127b are alternately arranged in the z-direction.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a valve, a mold, and a die casting machine. The valve here opens and closes an exhaust passage for exhausting the inside of the mold (generally called a vacuum valve).

  2. Description of the Related Art Die casting machines that inject a liquid metal material (melt) into a mold while the interior of the mold is evacuated (in other words, exhausted or decompressed) are known (for example, Patent Documents 1 to 3). By vacuuming the inside of the mold before injection, for example, entrainment of gas (for example, air) by molten metal can be reduced. Such a die casting machine has a valve in the mold for opening and closing an exhaust passage for evacuating the inside of the mold. By closing the exhaust passage with the valve, for example, the possibility that the molten metal flows into a vacuum device for evacuating can be reduced.

JP 2008-254011 A JP 2000-52012 A JP-A-8-332558

  The above-mentioned valve preferably has, for example, a large opening area and can evacuate the inside of the mold in a short time. Thereby, for example, the cycle time can be reduced. Further, it is preferable that the valve transition time from the open state to the closed state is short. Thereby, for example, evacuation can be performed until just before the molten metal reaches the valve. Eventually, the evacuation can be stopped after the molten metal has sufficiently spread in the mold, and the effect of reducing gas entrainment by the molten metal is improved.

  However, when the opening area is increased, the time for closing the valve increases. That is, it was difficult to satisfy both of the above two preferable conditions. For example, the valve of Patent Literature 1 has a port through which the inside and outside of a mold pass, and a closing component that opens and closes the port. The closing component has a tapered surface that becomes thinner toward the distal end, and the port is closed when the closing component is inserted into the port and the tapered surface contacts the edge of the port. Also, the port is opened by pulling out the closing part from the port. Therefore, in order to increase the opening area (gap between the edge of the port and the tapered surface), the distance for pulling out the closing part from the port is increased. In this case, of course, the time for inserting the closing part into the port to close the port becomes longer.

  Therefore, it is desired to provide a valve, a mold, and a die casting machine that can shorten the closing time while increasing the opening area.

  A valve according to an embodiment of the present disclosure is a valve that opens and closes an exhaust flow path that exhausts the inside of a mold, the valve body having a port that allows the inside and the outside of the mold to pass through, and the valve A movement in a predetermined movement direction with respect to the main body includes a closing part that moves between a closed position that closes the port and an open position that opens the port, and the valve body is arranged in the moving direction. And a plurality of ports that are open in an opening direction that intersects the movement direction, and wherein the closing component is configured to move the plurality of ports in the opening direction when the closing component is in the closed position. A plurality of closing portions for closing on one side, and a plurality of opening portions for opening the plurality of ports to the one side in the opening direction when the closing part is at the open position, The plurality of closed Said plurality of port side portion parts, and the plurality of port side portion of the plurality of opening portions are alternately arranged in the moving direction.

  In one example, the plurality of opening portions are a plurality of through holes penetrating the closing component.

  In one example, the valve further has at least a first portion and a second portion that are combined with each other by closing the mold to form the valve body, and the opening direction and the moving direction are the same. A direction intersecting the opening / closing direction of the mold, wherein the closing part is separable from the second part together with the first part by opening the mold, and the plurality of opening parts are provided in the closing part of the closing part. A groove formed in the surface on the second portion side, and a flow path communicating with the port is formed between the inner surface of the groove and the second portion by closing the mold.

  In one example, the one side of the closing component in the opening direction is a side communicating with the outside of the mold.

  In one example, the valve body includes a space accommodating the closing component movably in the movement direction, and the plurality of ports that open to the space and communicate the space and the inside of the mold. And a plurality of outer ports that are open to the space and communicate the space and the outside of the mold, wherein the closing component is configured such that, in the closed position, the plurality of ports and the plurality of ports. Both the plurality of outer ports are closed, and in the open position, the plurality of ports and the plurality of outer ports are passed.

  In one example, the valve has at least a first portion and a second portion that are combined with each other by closing the mold to form the valve body, and the opening direction is the opening and closing direction of the mold. And the plurality of ports are configured between the first portion and the second portion.

  In one example, the valve further includes a plurality of push pins that are movably inserted into the first portion or the second portion in the opening and closing direction of the mold and that enter and exit the plurality of ports. .

  In one example, the valve has a first flow path having one end communicating with the inside of the mold, the other end being in contact with the closing part, and at least a part including the other end extending in the moving direction, A second flow path extending from the first flow path, wherein the second flow path has a meandering portion extending in a meandering manner so as to reciprocate in the movement direction. The plurality of ports are open on the side surface of the flow path of the meandering section that is the most distant from the first flow path among the plurality of flow paths extending in the movement direction.

  In one example, the valve communicates with the inside of the mold, and an upstream flow path in which the plurality of ports are open on the inner surface, and the plurality of ports in the upstream flow path are open. A trap flow path connected to a position opposite to a side communicating with the inside of the mold from a position where the trap flow path is located, and a first portion and a second portion that are combined with each other by closing the mold of the mold. The trap flow path is formed between the first portion and the second portion, and has a portion extending in a wave shape with the opening and closing direction of the mold as a wave height direction. Have.

  A valve according to an embodiment of the present disclosure is a valve that opens and closes an exhaust flow path that exhausts the inside of a mold, the valve body having a port that allows the inside and the outside of the mold to pass through, and the valve body. And a closing part that moves between a closed position that closes the port and an open position that opens the port by movement in a predetermined movement direction with respect to the port, wherein the port has an opening that intersects the movement direction. A closing part that closes the port on one side in the opening direction when the closing part is in the closed position, and when the closing part is in the open position. An opening that opens the port to the one side in the opening direction, wherein the opening is a through hole that penetrates the closing component, or a groove that is formed on the surface of the closing component. is there.

  A mold according to an aspect of the present disclosure includes the valve and a mold body that forms a cavity communicating with the valve.

  A die casting machine according to an aspect of the present disclosure includes the valve, a mold clamping device that clamps the mold, a vacuum device that exhausts the inside of the mold through the valve, and an inside of the mold. An injection device for injecting the metal material before solidification and an extrusion device for extruding the metal material after solidification from inside the mold.

  According to the above configuration, the closing time can be reduced while increasing the opening area.

FIG. 1 is a schematic diagram illustrating a main configuration of a die casting machine according to an embodiment of the present disclosure. The perspective view which shows typically the structure of the metal mold | die of the die-casting machine of FIG. The perspective view which shows typically the structure of the valve | bulb of the metal mold | die of FIG. FIG. 4 is a front view showing the fixed valve unit of the valve in FIG. 3 in an open state. FIG. 4 is a front view showing the fixed valve unit of the valve in FIG. 3 in a closed state. FIG. 6A is a partially enlarged view of FIG. FIG. 6B is a partially enlarged view of FIG. FIG. 7A is a view of the inside port of the valve of FIG. 3 as viewed in the opening direction, and FIG. 7B is a perspective view showing a configuration of a closing part of the valve of FIG. Sectional drawing in the VIII-VIII line of FIG. FIG. 4 is a sectional view taken along line XI-XI in FIG. 3. FIG. 4 is a diagram showing a part of a front surface of a moving valve unit of the valve in FIG. 3. FIG. 11A and FIG. 11B are cross-sectional views illustrating a modification example of a positional relationship between a port and a closing component. Sectional drawing which shows the modification concerning the opening direction of a port. 13 (a) and 13 (b) are views showing a modified example related to the opening of the closing component. FIG. 14A and FIG. 14B are views showing another modified example of the opening of the closing part. The figure which shows the further another modification concerning the opening part of a closing part.

  Hereinafter, embodiments according to the present disclosure will be described with reference to the drawings. The drawings may be given a right-handed rectangular coordinate system xyz in order to facilitate understanding of the relationship between a plurality of drawings. The x direction and the y direction are, for example, horizontal directions, and the y direction is a mold opening / closing direction described later. The + y direction is a direction from a fixed mold 103 to a movable mold 105 described later. The z direction is, for example, a vertical direction, and the + z side is upward.

  In the following description, “F” and “M” are added to the reference numerals of members having the words “fixed” and “movable”, such as “fixed die plate 12F” and “moving die plate 12M”. It may be given a sign. In this case, "fixed" and "movable" and "F" and "M", such as "die plate 12", may be omitted to distinguish between them.

(Overview of die casting machine)
FIG. 1 is a side view, partially including a cross-sectional view, showing a configuration of a main part of a die casting machine 1 according to an embodiment of the present invention.

  The die casting machine 1 is for manufacturing a die cast product (molded product) by injecting a molten metal into the mold 101 and solidifying it. In the description of the present embodiment, the term “inside the mold 101” or “inside the mold 101” means a cavity Ca (product part) corresponding to a die-cast product or a space mainly including the cavity unless otherwise specified. I do. In the die casting machine 1, injection is performed in a state where the inside of the mold 101 is evacuated. That is, the die casting machine 1 executes a so-called vacuum die casting method. The metal material to be the molten metal is, for example, aluminum or an aluminum alloy.

  The mold 101 includes, for example, a fixed mold 103 and a movable mold 105. In FIG. 1, for the sake of convenience, the cross section of the fixed mold 103 or the movable mold 105 is shown by one type of hatching, but these molds may be directly carved or nested. It may be. The fixed mold 103 and the movable mold 105 may be combined with a core or the like. Note that the mold 101 or a mold body described later is exchanged according to the type of the die-cast product, and may be regarded as being separate from the die-cast machine 1, or a part of the die-cast machine 1. May be caught.

  The die casting machine 1 includes, for example, a machine body 3 that holds a mold 101 and performs a mechanical operation for molding, and a control unit 5 that controls the operation of the machine body 3.

  The configuration of the machine body 3 may be, for example, the same as the configuration of the machine bodies of various known die casting machines that execute the vacuum die casting method. The same applies to the control unit 5. Therefore, the outline of an example of the machine body 3 and the control unit 5 will be described below.

  The machine body 3 includes, for example, a mold clamping device 7 that opens and closes and molds the mold 101, an injection device 9 that injects molten metal into the mold 101, and a fixed mold 103 or a movable mold 105 ( 1 includes an extruder 11 for extruding from a moving mold 105) and a vacuum device 31 (see FIG. 4) for evacuating the mold 101.

  In the molding cycle, the mold clamping device 7 moves the movable mold 105 toward the fixed mold 103 (that is, performs mold closing). The mold closing is performed, for example, until the movable mold 105 and the fixed mold 103 contact each other (that is, until the mold contacts). Further, the mold clamping device 7 presses the movable mold 105 and the fixed mold 103 together with a predetermined mold clamping force (that is, performs mold clamping). A cavity Ca having the same shape as the product is formed in the clamped mold 101. The vacuum device 31 evacuates the inside of the clamped mold 101. The injection device 9 injects and fills the molten metal into the evacuated cavity Ca. The metal material filled in the cavity Ca is deprived of heat by the mold 101 and is cooled and solidified. As a result, a die-cast product is formed. After that, the mold clamping device 7 opens the mold by moving the movable mold 105 in a direction away from the fixed mold 103. At this time or thereafter, the extrusion device 11 extrudes the die-cast product from the movable mold 105.

  The mold clamping device 7 includes, for example, a fixed die plate 12F that holds the fixed die 103 and a movable die plate 12M that holds the movable die 105. The two die plates 12 are opposed to each other, and have a fixed mold 103 or a movable mold 105 on the opposite side. In the following, regarding the die plate 12, the fixed mold 103, and the movable mold 105, the surface on the side where the die plate or the mold faces each other may be referred to as the front surface, and the surface on the opposite side may be referred to as the back surface. The facing direction is, for example, the horizontal direction (y direction).

  The mold opening / closing is performed by moving the movable die plate 12M along the facing direction (mold opening / closing direction) in the absolute coordinate system. After the mold is closed, the tie bar 13 fixed to one die plate 12 (fixed die plate 12F in the illustrated example) is pulled toward the back side of the other die plate 12 (movable die plate 12M in the illustrated example). The mold clamping force according to the extension amount of the tie bar 13 is applied to the mold 101.

  The injection device 9 includes, for example, a sleeve 21 communicating with the inside of the mold 101, a plunger 23 slidable in the sleeve 21, and an injection drive unit 25 for driving the plunger 23. In the description of the injection device 9, the mold 101 side (the left side in FIG. 1) may be referred to as the front, and the opposite side may be referred to as the rear.

  The sleeve 21 is, for example, a cylindrical member connected to the fixed mold 103, and has a supply port 21 a for receiving molten metal in the sleeve 21 on the upper surface. The plunger 23 has a plunger tip 23a slidable in the front-rear direction in the sleeve 21 and a plunger rod 23b having a tip fixed to the plunger tip 23a. The injection drive unit 25 includes a hydraulic cylinder and / or an electric motor.

  When the mold clamping by the mold clamping device 7 is completed, one shot of molten metal is supplied into the sleeve 21 from the supply port 21a by a pouring device (not shown). Then, when the plunger 23 slides forward in the sleeve 21 from the illustrated position, the molten metal in the sleeve 21 is pushed out (injected) into the mold 101.

  The extrusion device 11 includes, for example, a plurality of extrusion pins 14 that abut against and press the die-cast product, and an extrusion drive unit 15 that drives the extrusion pins 14.

  The extrusion pin 14 is inserted through the movable mold 105 in the mold opening and closing direction. The push-out drive unit 15 is formed of, for example, an actuator that generates a linear motion such as a hydraulic cylinder or a linear motor, and is connected in series with the push-out pin 14 via a guide pin, a push-out plate and the like (reference numerals are omitted). .

  While the molten metal is being injected into the mold 101, the extrusion driving unit 15 causes the extrusion pin 14 to wait at a predetermined standby position. The standby position is, for example, a position where the tip end surface of the push pin 14 is flush with the front surface (the uneven surface) of the movable mold 105. Then, at the time of opening the mold or after the mold is opened, the extrusion driving unit 15 moves the extrusion pin 14 toward the fixed mold 103 and pushes out the die-cast product from the movable mold 105.

  For example, as schematically shown in FIG. 4, the vacuum device 31 includes a tank 35 communicating with the mold 101, a pump 37 for evacuating the tank 35, an electric motor 39 for driving the pump 37, and a tank 35. A valve 33 for permitting and prohibiting the flow of gas (for example, air) to and from the mold 101;

  Prior to evacuation (intake from the mold 101 side), the vacuum device 31 exhausts the tank 35 by the pump 37 with the valve 33 closed, and depressurizes the tank 35. Then, by opening the valve 33, the suction from the mold 101 side to the tank 35 is started, and by closing the valve 33, the suction is stopped. By reducing the pressure in the tank 35 in advance, it is possible to rapidly intake air from the mold 101 side.

  As will be understood from the following description, a valve that allows and prohibits the flow between the cavity Ca and the vacuum device 31 is interposed between the cavity Ca and the vacuum device 31. The start or stop of the suction does not necessarily mean the start or stop of the evacuation in the cavity Ca. The pump 37 may be constantly driven regardless of the opening and closing of the valve 33, or may be driven as needed.

  The control unit 5 includes, for example, a control device 16 (see FIG. 4) that performs various calculations and outputs control commands, an input device 17 that receives an input operation of an operator, and a display device 18 that displays an image. are doing. Further, from another viewpoint, the control unit 5 includes, for example, a control panel (not shown) having a power supply circuit, a control circuit, and the like, and an operation unit 19 as a user interface.

  The control device 16 is provided in, for example, a control panel and an operation unit 19 (not shown). The control device 16 may be appropriately divided or distributed. For example, the control device 16 is a lower control device for each configuration related to the mold clamping device 7, the injection device 9, the extrusion device 11, and the evacuation, and a higher control device that performs control such as synchronization between the lower control devices. It may be configured to include a control device.

  The display device 18 and the input device 17 are provided in, for example, the operation unit 19. The operation unit 19 may be provided at an appropriate position such as a fixed portion of the mold clamping device 7. The display device 18 is configured by, for example, a touch panel including a liquid crystal display or an organic EL display. The input device 17 includes, for example, a mechanical switch and the touch panel.

  In the case where attention is paid to the configuration related to evacuation of the die casting machine 1, the control unit 5 may be regarded as a control unit having a configuration related to evacuation.

(Outline of mold)
FIG. 2 is a perspective view schematically illustrating the configuration of the mold 101.

  The stationary mold 103 and the movable mold 105 include a stationary mold body 107F and a movable mold body 107M that constitute the cavity Ca, and a valve 109 (vacuum valve) for opening and closing a flow path for evacuating the cavity Ca. have.

  The valve 109 includes a fixed valve unit 111F included in the fixed mold 103 (located on the fixed mold body 107F) and a movable valve included in the movable mold 105 (located on the movable mold body 107M). Unit 111M. In FIG. 2, the specific configuration of the valve unit 111 is not shown, and only a schematic outer shape is shown.

  On the front surface of the mold main body 107 (in other words, a mold mating surface or a divided surface), concave and convex portions including concave portions and / or convex portions are formed for various purposes. For example, an uneven portion 107a for forming the cavity Ca is formed. Usually, the concave and convex portions 107a are formed on both mold bodies 107. Since FIG. 2 is a schematic diagram, the concave and convex portions 107a of any of the mold bodies 107 are shown as rectangular parallelepiped concave portions. Further, for example, a through-hole 107b through which the sleeve 21 is inserted or connected to the sleeve 21 (the former in the example of FIG. 1) is formed in the fixed mold main body 107F. Further, for example, an uneven portion 107c for forming a runner connecting the through hole 107b and the cavity Ca is also formed on the front surface of the mold body 107. In the illustrated example, the concave and convex portions 107c are formed only on the movable mold main body 107M, and the shape is simplified because FIG. 2 is a schematic diagram. In addition, although not particularly shown, an uneven portion forming a so-called hot water pool (overflow) may be formed around the uneven portion 107a.

  On the front surface of the mold body 107, an uneven portion 107e forming a connection flow path 107d for connecting the cavity Ca and the valve 109 is formed. The connection flow path 107d forms an exhaust flow path 113 for exhausting the cavity Ca together with a unit flow path 115 (see FIG. 3) described later in the valve 109. The concavo-convex portion 107e constituting the connection flow path 107d may be formed on only one of the pair of mold main bodies 107, or may be formed on both of them. In the present embodiment, a mode in which the concave and convex portions 107e formed of concave portions are formed on both of the pair of mold bodies 107 is mainly exemplified.

  The shape and dimensions of the connection flow path 107d may be set as appropriate. For example, the connection flow path 107d extends upward from the upper surface or the side surface of the cavity Ca as a whole. From another viewpoint, the connection flow path 107d extends from the cavity Ca to the opposite side to the through hole 107b as a whole. The connection flow path 107d may be linear, may include a bent portion, may have a constant cross-sectional area, or may have a variable cross-sectional area. Further, a pool of water (not shown) may be interposed between the connection flow path 107d and the cavity Ca. In this case, the water pool may be regarded as a part of the connection flow path 107d.

  The fixed valve unit 111F is located on the front side of the fixed mold body 107F. Similarly, the movable valve unit 111M is located on the front side of the movable mold body 107M. From another viewpoint, the valve unit 111 is exposed from the mold body 107 to the front side. The pair of valve units 111 abut (combine) with each other as the mold closes, and separate from each other as the mold opens. In addition, in the valve 109, the concave groove may become a through hole due to the combination, but in the description of the present embodiment, for convenience, an expression based on the combined state may be used.

  The valve unit 111 is located on the outer edge side of the cavity Ca (the uneven portion 107a) on the front surface of the mold body 107, and has an outer peripheral surface of the mold body 107 (an axis (y-axis) parallel to the mold opening and closing direction). It is exposed from the surrounding surface). More specifically, for example, the valve unit 111 is exposed from the upper surface of the mold body 107. From another viewpoint, the valve unit 111 is located on the opposite side of the cavity Ca from the through hole 107b. The upper surface of the valve unit 111 may be flush with the upper surface of the mold body 107 (illustrated example), may be located higher than the upper surface of the mold body 107, or may be It may be located below the upper surface of 107.

  As will be understood from the following description, the valve unit 111 has a portion fixed to the mold body 107 (such as a valve body) and a portion that moves relative to the portion (such as a closing part). ing. The fixed part of the valve unit 111 may be formed separately from the mold body 107 and attached to the mold body 107, or a part or all of the fixed part may be integrated with the mold body 107. May be formed. In the description of the present embodiment, the former is mainly taken as an example.

  As described above, the mold body 107 may be, for example, a direct engraving type or a nesting type. When the mold body 107 is of a nesting type, the relative position of the valve unit 111 with respect to the main mold and the nesting may be appropriately set. For example, the valve unit 111 may be located only on the main mold.

(Overview of valve)
FIG. 3 is a perspective view schematically showing the configuration of the valve 109. 4 and 5 are views (including a cross-sectional view partially) of the fixed valve unit 111F viewed from the front side. FIG. 4 shows a state where the valve 109 is open (open state). Reference numeral 5 indicates a state in which the valve 109 is closed (closed state). 4 and 5 are cross-sectional views of the valve 109 in a state where the pair of valve units 111 are combined, and the front surface of the fixed valve unit 111F is also hatched.

  The valve 109 has a unit flow path 115 constituting an exhaust flow path 113 for evacuating the cavity Ca. The upstream end 115a of the unit channel 115 is connected to the cavity Ca (strictly speaking, the connection channel 107d). The downstream end 115b of the unit flow path 115 is open to the outside of the mold 101, and the vacuum device 31 is connected. Further, the valve 109 has an opening / closing part 117 located in the middle of the unit channel 115. The opening / closing portion 117 is a portion that can be said to be a valve in a narrow sense, and opens and closes the unit channel 115.

  By opening the opening / closing section 117 and the valve 33 of the vacuum device 31, the flow of gas from the cavity Ca to the tank 35 via the unit flow path 115 is allowed. That is, the inside of the mold 101 is evacuated. In addition, the opening timing of the opening / closing unit 117 and the valve 33 of the vacuum device 31 may be the same, or either may be earlier. That is, the start of evacuation may be determined by the valve 109 or the valve 33.

  Further, for example, when the opening / closing unit 117 is closed, the evacuation in the mold 101 is completed. That is, it is the valve 109 that defines the end of the evacuation. Further, by closing the opening / closing section 117, the flow of the molten metal to the vacuum device 31 is prohibited, and, for example, the vacuum device 31 is protected from the molten metal.

  Further, from another viewpoint, the fixed valve unit 111F has a fixed base 119F fixed to the fixed mold body 107F. The moving valve unit 111M has a moving base 119M fixed to the moving mold body 107M. Various members are movably or non-movably attached to the pair of bases 119 (only one may be provided), thereby forming a pair of valve units 111.

  The schematic shape (the shape excluding the shape of the front surface) of the base 119 may be an appropriate shape. In FIG. 3, the schematic shape of the base 119 is a rectangular parallelepiped. The pair of bases 119 have, for example, substantially the same front surface area as each other. The pair of bases 119 may have the same thickness from the front surface to the back surface (example shown) or may have different thicknesses. The base 119 may be detachably fixed to the mold main body 107 by screws or the like, or may be fixed by welding or the like so as not to be detachable. Further, as already mentioned, the base 119 may be formed integrally with the mold body 107, unlike the example shown in the figure.

  The unit flow path 115 is mainly configured, for example, between the pair of valve units 111. More specifically, for example, a unit channel 115 is formed by forming a concave / convex portion (not shown) including a concave portion (a convex portion as necessary) on at least one front surface of the pair of base portions 119. ing. In the present embodiment, a case is mainly exemplified in which both base portions 119 are formed with recesses having the same shape and the same depth and the same shape as seen through the plane in the mold opening and closing direction.

  The shape of the unit channel 115 may be various shapes as described later in detail. However, the melt enters the part of the unit channel 115 from the mold body 107 and solidifies. Therefore, a portion of the unit flow path 115 where the molten metal is expected to enter may have, for example, a shape in which a so-called undercut does not occur. To be confirmed, undercut refers to a shape in which the die cast product is engaged with the mold (here, the fixed mold 103 and the movable mold 105) in a direction away from the mold.

  The opening / closing section 117 is located in the middle of the unit channel 115 as described above. In other words, the unit flow path 115 includes an upstream flow path 121 located closer to the cavity Ca than the opening / closing section 117 and a downstream side located outside the mold 101 (vacuum apparatus 31 side) than the opening / closing section 117. And a flow path 123. The opening / closing unit 117 functions as a valve that connects or disconnects the upstream channel 121 and the downstream channel 123. The upstream channel 121 is a portion where the molten metal is supposed to enter, and may have a shape that does not cause undercut as described above.

(Opening and closing part)
FIG. 6A is a partially enlarged view of FIG. FIG. 6B is a partially enlarged view of FIG. In these figures, the left side of the opening / closing section 117 in the drawing is the upstream flow path 121, and the right side of the opening / closing section 117 in the drawing is the downstream flow path 123.

  The opening / closing section 117 has a valve body 125 and a closing part 127 movable with respect to the valve body 125.

  The valve body 125 includes, for example, an inner port 125a opening to the upstream flow path 121 (communicating with the cavity Ca), an outer port 125b opening to the downstream flow path 123 (communicating to the outside of the mold 101), and an inner port. There is a space 125s connecting the outer port 125b to the outer port 125a.

  On the other hand, the closing component 127 is located in the space 125s, and intersects (for example, orthogonally) with the valve body 125 in the opening direction (x direction) of the inner port 125a and the outer port 125b (z direction). Can be moved to Further, the closing component 127 has a closing portion 127a capable of closing the inner port 125a and the outer port 125b, and an opening 127b forming a valve channel 117a connecting the inner port 125a and the outer port 125b. .

  Accordingly, as shown in FIG. 6B, when the closing part 127 moves to the closed position where the closing part 127a closes the inner port 125a and the outer port 125b, the opening / closing part 117 is closed. Further, as shown in FIG. 6A, when the closing part 127 moves to the open position where the opening 127b is located at the inner port 125a and the outer port 125b, the opening / closing part 117 is opened.

  Also, a plurality of inner ports 125a and outer ports 125b are arranged in the moving direction (z direction) of the closing component 127. The closing component 127 has a plurality of closing portions 127a and a plurality of opening portions 127b alternately in the movement direction. The pitch in the z direction of each of the plurality of inner ports 125a and the plurality of outer ports 125b (e.g., the distance between centers or geometric centers of gravity; the same applies hereinafter) and the number of closed portions 127a (from another viewpoint, The pitch of the opening 127b) is equivalent.

  Therefore, when the closing component 127 is in the closed position, the plurality of inner ports 125a and the plurality of outer ports 125b are simultaneously closed by the plurality of closing portions 127a. Further, when the closing part 127 is in the open position, the plurality of inner ports 125a and the plurality of outer ports 125b are simultaneously communicated by the plurality of opening portions 127b. The distance between the open position and the closed position is approximately half the pitch of the plurality of inner ports 125a and the like.

  Here, a combination of one inner port 125a, one outer port 125b, one closing part 127a, and one opening part 127b is defined as a valve element 117e. Then, for example, it is assumed that, unlike the present embodiment, only one valve element 117e is provided. In this embodiment, from the position where the closing portion 127a barely completely blocks the inner port 125a and the outer port 125b (which may be regarded as a kind of closed position), the position where the closing portion 127a is completely completely retracted from these ports (open position). (In other words, the + z side edge of the closing portion 127a moves from the + z side edge of the port to the -z side edge of the port). Is equal to the diameter of the port in the z direction (the moving direction of the closing part).

  Also in the present embodiment, in the case where attention is paid to one valve element 117e, the distance from the position where the closing portion 127a covers the inner port 125a and the outer port 125b almost completely to the position where the closing port 127a completely retracts is the above-described mode. And is equal to the diameter of the port in the z-direction. However, in the present embodiment, the plurality of valve elements 117e are simultaneously opened and closed. As a result, as compared to the above-described embodiment, the opening area of the entire valve that is opened and closed at the same distance (in other respects, the sum of the diameters of the openings in the z direction) increases. Consequently, a large opening area can be opened and closed in a short time.

  In the above description, for the convenience of explaining that the moving distance of the closing component 127 is shorter than the opening area, the moving distance has been described as being equal to the diameter of the port in the z direction. In the following description, a half of the pitch of the plurality of valve elements 117e is mainly used as an example of the movement distance.

  The specific shapes, sizes, and the like of the valve body 125 and the closing part 127 (a plurality of valve elements 117e from another viewpoint) may be appropriately set. Hereinafter, an example will be described.

(Valve body)
The valve main body 125 is constituted by, for example, at least one of the pair of bases 119 (both in the present embodiment). More specifically, for example, on the front surface of at least one of the pair of bases 119 (both in the present embodiment), an uneven portion including a concave portion and / or a convex portion (reference numeral omitted) is formed. Then, at least one (all in the present embodiment) of the inner port 125a, the outer port 125b, and the space 125s is formed between the pair of bases 119 by the pair of bases 119 being united with the closing of the mold. Is done.

(Inner port)
FIG. 7A is a view of the inside port 125a viewed in the opening direction.

  As understood from FIGS. 3 and 7A, and as already mentioned, the inner port 125a is formed, for example, between the pair of valve units 111. More specifically, for example, although not particularly designated, a front surface of at least one of the pair of base portions 119 (both in the illustrated example) protrudes in the mold opening / closing direction, and has a plurality of notches at the top thereof. A formed wall is provided. Then, when the pair of bases 119 are united with the closing of the mold, the plurality of notches constitute a plurality of inner ports 125a.

  As shown in FIG. 7A, the shape (opening shape) of the inner port 125a viewed in the opening direction (x direction) is, for example, rectangular. Two sides of the rectangle are, for example, parallel to the moving direction (z direction) of the closing component 127, and the other two sides are orthogonal to the moving direction. In this case, for example, in the inner port 125a, the maximum width (y direction) is maintained throughout the z direction (the moving direction of the closing component 127). As a result, the opening area of the opening / closing section 117 with respect to the moving distance of the closing component 127 can be maximized. Of course, the opening shape may be any other suitable shape such as a circle, an ellipse, or a polygon other than a rectangle.

  The opening shape of the inner port 125a is, for example, a shape in which the diameter in the direction (y direction) orthogonal to the moving direction (z direction) of the closing component 127 is larger than the diameter in the moving direction. That is, the above rectangle is a rectangle that is long in the y direction. In this case, for example, as compared with a mode in which the diameter in the z direction is larger than the diameter in the y direction (this mode is also included in the technology according to the present disclosure), the opening area of the opening / closing unit 117 with respect to the moving distance of the closing component 127 is set. Can be bigger. Of course, other than the rectangle, the length in the y direction (for example, the maximum value) may be made larger than the length in the z direction (for example, the maximum value).

  From another viewpoint, the opening shape of the inner port 125a is, for example, a shape that does not increase in diameter with respect to the mating surface of the pair of base portions 119 as the distance from the mating surface increases (a shape in which a so-called undercut does not occur). I have. Thus, for example, even when the molten metal enters the inner port 125a and solidifies, the metal material in the inner port 125a can be easily removed together with the die-cast product as the mold is opened. Such a shape can be a circle, an ellipse, or a polygon other than a rectangle, as well as a rectangle as shown in the drawing, as long as the mating surface and the like are appropriately set.

  As shown in FIGS. 6A and 6B, the opening area of the inner port 125a is constant regardless of the position in the opening direction (x direction). However, for example, the diameter may be increased toward the cavity Ca and / or toward the outside of the mold 101.

  The number of the plurality of inner ports 125a may be appropriately set as long as it is two or more. Of course, as the number of valve elements 117e increases, the effect of increasing the opening area of the opening / closing section 117 with respect to the moving distance of the closing component 127 increases. For example, the number of the plurality of inner ports 125a may be three or more or five or more.

  The shapes and dimensions of the plurality of inner ports 125a are, for example, the same as each other. When three or more inner ports 125a are provided, the pitch of the plurality of inner ports 125a is constant. However, the shapes, dimensions, and / or pitches of the plurality of inner ports 125a can be different from each other. For example, the inner port 125a closer to the cavity Ca is closer to the cavity Ca so that the inner port 125a closer to the cavity Ca (the molten metal arrives first from another viewpoint) on the path of the unit flow path 115 is completely closed earlier. The diameter may be reduced to the Ca side (−z side in the illustrated example).

  The diameter of the inner port 125a in the moving direction (z direction) of the closing component 127 is smaller than the pitch of the plurality of inner ports 125a, and the inner ports 125a are arranged with an interval therebetween. As understood from FIG. 6A, a portion between the plurality of inner ports 125a is a portion where the plurality of closing portions 127a of the closing component 127 (excluding the closing portion 127a at one end) are located in the open state. Become. The diameter of the inner port 125a in the z direction and the distance between the inner ports 125a may be equal, or one may be larger than the other. From another viewpoint, the diameter of the inner port 125a in the z direction may be equal to half the pitch of the plurality of inner ports 125a, may be smaller (illustrated in the example), or may be larger.

  When the diameter of the inner port 125a in the z direction (the moving direction of the closing component 127) is smaller than half the pitch of the plurality of inner ports 125a, the size of the closing portion 127a that closes the inner port 125a is also smaller than half the pitch. May be. From another point of view, the diameter in the z direction of the open portion 127b between the plurality of closed portions 127a can be larger than a half pitch. Therefore, in the open state, the diameter in the z direction of the opening formed by the overlap of the inner port 125a and the opening 127b is defined by the inner port 125a, and increases as the inner port 125a approaches a half pitch.

  Conversely, when the diameter of the inner port 125a in the z direction (the moving direction of the closing component 127) is larger than half the pitch of the plurality of inner ports 125a, the size of the blocking portion 127a that closes the inner port 125a is half. Must be larger than the pitch. From another point of view, the diameter in the z direction of the open portion 127b between the plurality of closed portions 127a is smaller than a half pitch. Therefore, in the open state, the diameter in the z direction of the opening formed by the overlap of the inner port 125a and the opening 127b is defined by the opening 127b, and the maximum diameter increases as the opening 127b approaches the half pitch. .

  As understood from the above, the opening that is given priority in defining the diameter in the z direction (moving direction of the closing component 127) of the opening formed by the overlap of the inner port 125a and the opening 127b is the inner port 125a and the opening. 127b.

  Further, as can be understood from the above, the diameter of the opening due to the above-mentioned overlap is the largest because the diameter of both the inner port 125a and the opening 127b in the z direction (the moving direction of the closing part 127) is half pitch. Is the case. However, in order to securely close the inner port 125a and / or the opening 127b, the closing part 127a may be made slightly larger than the inner port 125a, and / or a portion between the inner ports 125a is made slightly larger than the opening 127b. May be. In another aspect, the inner port 125a and / or the opening 127b may be smaller than a half pitch. For example, the diameter of the inner port 125a and / or the opening 127b in the z direction (for example, the maximum diameter when the diameter in the z direction is not uniform in the x direction like a circular opening) is 0.3 to 0.5 of the pitch. (Less than 0.6 and less than 1 of a half pitch).

  The diameter of the inner port 125a in the z direction (the moving direction of the closing part 127) and the diameter of the opening 127b in the z direction may be equal (example shown) or may be different from each other. In the case of equality, for example, it is easy to increase the diameter in the z direction of the opening formed by the overlap of the two.

(Outside port)
The configuration of the plurality of outer ports 125b may be the same as the configuration of the plurality of inner ports 125a, for example, except for the position in the x direction. Therefore, the description of the inner port 125a in the above description may be basically replaced with the “outer port 125b” instead of the “inner port 125b” to describe the outer port 125b.

(Space for valve body)
The space 125s accommodates the closing component 127 so as to be slidable in a direction (z direction) orthogonal to the opening direction of the inner port 125a and the outer port 125b. Accordingly, the space 125 s basically has a constant cross-sectional shape perpendicular to the z direction in the z direction. The shape of the cross section may be an appropriate shape, and is rectangular in the present embodiment. That is, the space 125s is a rectangular parallelepiped space.

(Closed parts)
FIG. 7B is a perspective view illustrating a configuration of the closing component 127.

  The closing component 127 is configured by, for example, forming a plurality of through holes in a substantially columnar member whose axial direction is the z direction. The plurality of through holes constitute an opening 127b. Of the closing component 127, a portion between the plurality of opening portions 127b and a portion located on one end side (−z side) with respect to the plurality of opening portions 127b constitute a plurality of closing portions 127a.

  Since the closing part 127 slides in the space 125s described above in the z direction, the shape and size of the cross section orthogonal to the axis of the column (the cross section orthogonal to the z direction) are the same as those of the cross section orthogonal to the z direction of the space 125s. The shape and size are substantially the same, and in the present embodiment, the shape is rectangular. That is, the closing component 127 is basically formed in a substantially rectangular parallelepiped shape. Note that both ends of the closing component 127 may have shapes different from the shape of the space 125s.

  The plurality of opening portions 127b extend linearly, for example, in a direction (x direction) orthogonal to the moving direction of the closing component 127. The shape and dimensions of the cross section (a cross section orthogonal to the x direction) are constant in the x direction, for example. The shape and size of the cross section may be the same as or different from the opening shape and size of the inner port 125a and / or the outer port 125b. In the illustrated example, the cross-sectional shape of the open portion 127b is a rectangle whose diameter in the z direction is the same as the diameter in the z direction of the inner port 125a and the outer port 125b. The advantages relating to the rectangle are as exemplified in the description of the inner port 125a. In the example illustrated in the description of the present embodiment, the diameter of the open portion 127b in the y direction is smaller than the diameter of the inner port 125a and the outer port 125b in the y direction, but may be the same. , May be large.

  The plurality of opening portions 127b and the plurality of closing portions 127a correspond to the plurality of inner ports 125a and the plurality of outer ports 125b. Therefore, the number, pitch, and the like correspond to the number, pitch, and the like of the plurality of inner ports 125a and the plurality of outer ports 125b. In other words, a part of the description regarding the inside port 125a may be applied to the description of the plurality of open portions 127b and the plurality of closed portions 127a. For example, the shapes, dimensions, and pitches of the plurality of open portions 127b (the plurality of closed portions 127a) may be the same as each other (the illustrated example) or may be different from each other. In addition, for example, the diameter of the plurality of open portions 127b in the z direction may be equal to a half pitch, may be small, or may be large.

  The thickness of the closing component 127 is, for example, a portion (lower end portion 127e, including the closing portion 127a closest to the -z side) from the opening portion 127b closest to the open position (-z side) to the surface on the -z side. The thickness (z direction) is larger than the thickness (z direction) of the portion (upper end 127f) from the open portion 127b closest to the closed position (+ z side) to the + z side surface. As described later, the molten metal collides with the lower end portion 127e. Therefore, for example, when the lower end portion 127e is relatively thick, the risk of damage to the closing component 127 is suppressed. However, the thickness of the lower end portion 127e may be equal to the thickness of the closing portion 127a.

  In the present embodiment, the closing component 127 has a portion (upper end portion 127f) located on the + z side of the opening portion 127b closest to the closed position (+ z side). However, as understood from FIGS. 6A and 6B, the upper end portion 127f does not function as the closing portion 127a, and thus may be omitted. In this case, although not particularly shown, of the plurality of valve channels 117a connecting the plurality of inner ports 125a and the plurality of outer ports 125b, the valve channel 117a located at the most + z side penetrates the closing part 127. Instead of a through hole, the upper surface of the closing part 127 as an opening and the wall surface constituting the space 125 s of the valve body 125 are formed.

  The closing component 127 is provided on one of the pair of valve units 111 (the fixed valve unit 111F in the illustrated example) (see also FIG. 3). More specifically, the closing component 127 is movably attached to the base 119 (the fixed base 119F in the illustrated example) of the one valve unit 111. With respect to the closing component 127, separation from the fixing base 119F to the front side may be regulated by an appropriate method, and the driving limits on the −z side and the + z side may be defined. For example, the closing component 127 may be restricted from moving away from the fixed base 119F to the front side by a keyway (not shown) extending in the z direction at the fixed base 119F. Further, the closing component 127 is provided on the fixed base 119F with a stopper that abuts on the closing component 127 in the z direction (one end of the key groove may function as a stopper), so that the closing component 127 has a −z side and a + z side. A drive limit may be defined. For the closing component 127, the drive limits on the −z side and the + z side may be defined by the drive limits of the actuator described later.

(Upstream channel)
4 and 5, the upstream flow path 121 includes a first flow path 129 extending from the cavity Ca (strictly, the connection flow path 107d) and a middle or end of the first flow path 129 (the illustrated example). ) To the opening / closing portion 117 (inner port 125a).

  The first flow path 129 has, for example, one end (the end on the −z side) communicating with the cavity Ca (strictly, the connection flow path 107d), and the other end (the end on the + z side) in contact with the closing component 127. . At least a part (all in the illustrated example) including the other end extends in the moving direction (z direction) of the closing component 127. More specifically, the first flow path 129 extends, for example, linearly and in parallel with the moving direction of the closing component 127 and reaches the closing component 127. The direction from the first flow path 129 to the closing component 127 is a direction (+ z direction) from the open position of the closing component 127 to the closed position.

  Therefore, for example, when the molten metal is injected into the cavity Ca, the molten metal is substantially distributed throughout the cavity Ca, and further, when the molten metal flows from the connection flow path 107d into the first flow path 129, the molten metal is closed. At the lower end 127e). Thereby, the closing part 127 moves from the open position to the closed position.

  The shape and area of the cross section (the surface orthogonal to the z direction) of the first flow path 129 may be appropriately set, and the shape and area may be constant in the direction in which the first flow path 129 extends. Good or may change. The shape of the lower end 127e may be an appropriate shape as described above. However, for example, the lower end portion 127e may have a shape that does not cause undercut when the mold 101 is opened. As an example, for example, the lower end portion 127e may have a flat lower surface having the same shape as the cross-sectional shape (here, rectangular) of the space 125s as in the illustrated example.

  The distance between the first flow path 129 and the plurality of inner ports 125a (for example, the inner port 125a closest to the cavity Ca) in the second flow path 131 is determined by the connection position of the first flow path 129 with the second flow path 131. To the closing part 127 (for example, any of the open position and the closed position may be used as a reference). Accordingly, the molten metal flowing from the mold body 107 into the upstream flow path 121 collides with the closing component 127 in the first flow path 129, and then reaches the inner port 125a. As a result, the possibility that the molten metal reaches the opening / closing section 117 before the opening / closing section 117 is completely closed is reduced.

  The second flow path 131 has, for example, a meandering portion 131a that extends in a meandering manner so as to reciprocate in the movement direction (z direction) of the closing component 127. The plurality of inner ports 125a are open to the side surface of the flow path of the meandering portion 131a that is farthest from the first flow path 129 among the plurality of flow paths (symbols omitted) extending in the z direction. This facilitates increasing the distance of the second flow path 131 while reducing the volume occupied by the entire second flow path 131.

  The meandering part 131a may be configured to make only one reciprocation. In the illustrated example, the meandering part 131a has a combination of one reciprocation and one way (three flow paths extending in the z direction). Further, in the meandering portion 131a, the plurality of flow paths extending along the z direction (for example, linearly and parallel to the z direction) may have the same configuration or different configurations. The shape and area of the cross section of the second flow path 131 may be appropriately set, and the shape and area may be constant or change in the direction in which the second flow path 131 extends. .

(Downstream channel and hose coupler)
The downstream channel 123 extends, for example, along the moving direction (z direction) of the closing component 127 (for example, linearly and parallel to the z direction). One end thereof reaches the outer peripheral surface (here, the upper surface) of the mold 101 and communicates with the outside of the mold 101. The plurality of outer ports 125b are open on the side surface of the downstream channel 123. The shape and area of the cross section (cross section orthogonal to the z direction) of the downstream channel 123 may be appropriately set, and the shape and area may be constant in the direction in which the downstream channel 123 extends. Good or may change.

  A hose coupler 133 is provided at the downstream end of the downstream flow path 123. The hose coupler 133 contributes to the attachment or detachment of a hose (not shown) extending from the vacuum device 31, for example. The hose coupler 133 is provided on, for example, one of the pair of valve units 111 (the fixed valve unit 111F in the illustrated example) (see also FIG. 3), and more specifically, the base of the one valve unit 111. 119 (fixed base 119F in the illustrated example).

(Drive mechanism for closing parts)
A drive mechanism for moving (or holding the position) the closing component 127 to the open position and / or the closed position may have an appropriate configuration. In the following, an example of the driving mechanism will be described on the assumption that the movement of the closing component 127 to the closed position is performed by the force received from the molten metal as described above.

  The valve 109 has, for example, a hydraulic (for example, hydraulic) cylinder device 135 for moving the closing part 127 to the open position. The cylinder device 135 includes a cylinder portion 137, a piston (not shown) slidable in the cylinder portion 137, and a rod 139 fixed to the piston and extending from the cylinder portion 137. Then, by selectively supplying the hydraulic fluid to two cylinder chambers in the cylinder section defined by the piston, the piston and the rod 139 (not shown) move in the axial direction with respect to the cylinder section 137.

  The cylinder portion 137 is fixed to, for example, one of the pair of base portions 119 (fixed base portion 119F in the illustrated example). The rod 139 is fixed to the closing part 127. Further, the cylinder device 135 is coaxially connected to the closing part 127. That is, the axial direction of cylinder device 135 (the moving direction of rod 139 with respect to cylinder portion 137) is the z direction. Therefore, the movement of the rod 139 with respect to the cylinder part 137 causes the closing part 127 to move. More specifically, for example, the cylinder portion 137 is fixed to the upper surface of the fixed base portion 119F by a screw or the like so that the rod 139 faces downward. The closing component 127 is moved from the closed position to the open position by driving the rod 139 in the direction extending from the cylinder portion 137.

  Supply of the hydraulic fluid to the cylinder device 135 is performed by a hydraulic device 141 (FIG. 4). Although not specifically shown, the hydraulic device 141 includes, for example, a tank for storing the hydraulic fluid, a hydraulic source (for example, a pump and / or an accumulator) for sending the hydraulic fluid, and a flow of the hydraulic fluid from the hydraulic source to the cylinder device 135. And the like. The hydraulic device 141 is controlled by the control device 16.

  In the present embodiment, during a predetermined period (for example, a period other than when the opening / closing section 117 is opened by the cylinder apparatus 135) from the start of evacuation to the closing of the opening / closing section 117, the cylinder device 135 is, for example, 2 Each of the two cylinder chambers is depressurized. That is, the cylinder device 135 does not generate a driving force. Further, the cylinder device 135 may be configured to generate only a force in the direction in which the closing part 127 is opened (single-acting type).

  In the above description, the cylinder device 135 has been described as an example. Expressing this in a general concept, the valve 109 has, for example, an actuator (cylinder device 135) that generates a linear motion, and the actuator includes a fixed portion (cylinder portion 137) fixed to the base 119 and a closing portion. It has a movable part (rod 139) fixed to the component 127 and driven in the moving direction of the closing component 127 with respect to the fixed part. Examples of such an actuator include a pneumatic cylinder device and a linear motor in addition to a hydraulic cylinder device.

  Further, the valve 109 has a spring 143 for urging the closing part 127 in the direction of the open position. The biasing force of the spring 143 is smaller than the force of the molten metal in the first flow path 129 pushing the closing part 127 to the closed position. By providing such a spring 143, for example, the impact when the closing part 127 is moved to the closed position by the molten metal is reduced, and / or a period during which the cylinder device 135 does not generate a driving force (for example, during opening and closing of the mold). And / or during injection) can prevent the closing component 127 from moving unnecessarily.

  The spring 143 is specifically formed of, for example, a helical spring. The rod 139 (movable part) is inserted into the base part 119 (the fixed base part 119F in the present embodiment) while being compressed by the cylinder part 137 (fixed part) and the closing component 127.

(Trap channel)
The valve 109 has a trap channel 145 connected to the upstream channel 121. The trap channel 145 is connected to the upstream channel 121 at a position on the opposite side (here, the + z side) to the side communicating with the cavity Ca from the position where the plurality of inner ports 125a are open. . Therefore, for example, when the molten metal is drawn into the valve 109 to reach the plurality of inner ports 125a, the molten metal (pressure) can be released to the trap channel 145. As a result, for example, it is possible to reduce the possibility that the molten metal enters the opening 127b. The trap channel 145 may be connected to an appropriate position in the upstream channel 121, and may extend in an appropriate direction. In the illustrated example, the trap flow path 145 is connected in series to an upward end of the upstream flow path 121, and extends upward.

  FIG. 8 is a sectional view taken along line VIII-VIII in FIG. That is, it is a sectional view of the trap channel 145 and its periphery.

  The trap channel 145 is formed between the two by, for example, combining a pair of valve units 111 with the closing of the mold. The trap channel 145 has a portion extending in a wave shape with the mold opening / closing direction (y direction) as the wave height direction. In the illustrated example, the entire trap channel 145 has a wavy shape.

  The trap channel 145 may be configured by a member different from the base 119 (illustrated example) or may be configured by the base 119. In the former case, for example, the fixed trap member 147F and the movable trap member 147M that constitute the trap channel 145 may be made of a material having higher heat conductivity than the base 119. Further, the trap member 147 may be exposed to the outside from the base 119 (and the mold body 107).

  By thus forming the trap channel 145 in a wave shape or by using a material having high heat conductivity, for example, solidification of the molten metal is promoted.

  Note that the trap channel 145 is not located in the middle of the exhaust channel 113 connecting the cavity Ca and the outside of the mold 101, but is a channel that branches off from the exhaust channel 113. Therefore, the trap channel 145 does not have to communicate with the outside of the mold 101 as shown in FIG.

(Extrusion pin)
FIG. 9 is a sectional view taken along line XI-XI in FIG. FIG. 10 is a diagram showing the opening / closing unit 117 and its periphery on the front surface of the movable valve unit 111M. 4 and 5, FIG. 10 is a sectional view of the valve 109 in a state where the pair of valve units 111 are combined, and the front surface of the movable valve unit 111M is also hatched. . Also, as understood from the direction of the orthogonal coordinate system xyz, FIG. 10 is the opposite of the horizontal direction in FIG. 4 and FIG.

  As described above, the die casting machine 1 includes the extrusion device 11 (extrusion pin 14) that extrudes a die-cast product from one of the fixed mold 103 and the movable mold 105 (the movable mold 105 in the present embodiment). ing. The valve 109 is provided as a part of the extruding device 11 (in the example shown) or separately from the extruding device 11, from the one die (moving die 105), the metal (die casting) solidified in the valve 109. An extruding pin 149 (which may be regarded as a kind of the extruding pin 14) for extruding an unnecessary portion integrated with the product may be provided.

  The plurality of push pins 149 are, for example, inserted through the movable base 119M in the mold opening / closing direction. Further, depending on the position at which the mechanism for driving the push pin 149 is provided, the push pin 149 may be inserted into the movable mold body 107M in addition to the movable base 119M. In the illustrated example, the plurality of extrusion pins 149 are connected to an extrusion driving unit 15 that drives the extrusion pins 14 that push the die-cast product. For example, although not particularly illustrated, a part or all of the movable mold body 107M is provided. Has also been inserted. Note that a dedicated drive unit may be provided on the extrusion pin 149 separately from the extrusion drive unit 15.

  The positions of the plurality of push pins 149 in a plane orthogonal to the mold opening / closing direction are in a range where the molten metal is assumed to enter in the valve 109 (for example, the upstream channel 121, the inner port 125a, and the trap channel 145). If it is in the parentheses, the position may be an appropriate position. In the illustrated example, push pins 149 are provided at a plurality of (for example, all) inner ports 125a.

  For example, during the period from the start of injection to the opening of the mold, the extrusion pin 149 located at such an inner port 125a waits with the front end face positioned on the inner surface of the inner port 125a, and waits for opening or opening of the mold. After that, it projects into the inner port 125a. The shape and size of the cross section (the cross section orthogonal to the y-axis in the illustrated example) of the push pin 149 may be any shape and size that can protrude into the inner port 125a. In the illustrated example, the cross-sectional shape of the push pin 149 is a circle having a diameter slightly smaller than the diameter of the inner port 125a in the z direction.

  As described above, the valve 109 according to the present embodiment opens and closes the exhaust passage 113 that exhausts the inside of the mold 101 (the mold body 107). The valve 109 has a valve body 125 and a closing part 127. The valve body 125 has a port (for example, an inside port 125a) that allows the inside and outside of the mold 101 to pass through. The closing component 127 moves between a closed position for closing the inner port 125a and an open position for opening the inner port 125a by movement in a predetermined movement direction (z direction) with respect to the valve body 125.

  Further, the valve body 125 has a plurality of ports (for example, inner ports 125a) that are arranged in the movement direction (z direction) of the closing component 127 and open in an opening direction (x direction) intersecting the z direction. ing. The closing component 127 has a plurality of closing portions 127a and a plurality of opening portions 127b. The plurality of closing portions 127a close the plurality of inner ports 125a from one side (−x side) in the x direction when the closing component 127 is in the closed position. The plurality of opening portions 127b open (expose) the plurality of inner ports 125a to the −x side when the closing component 127 is in the open position. The plurality of closing portions 127a (at least a portion on the side of the plurality of inner ports 125a) and the plurality of opening portions 127b (a portion thereof on the side of at least the plurality of inner ports 125a) are in the z direction (moving direction of the closing component 127). Are arranged alternately.

  Therefore, as described with reference to FIGS. 6A and 6B, a mode in which only one inner port 125a, one closing part 127a, and one opening part 127b are provided (one valve Compared to the case where the element 117e is provided, the moving distance of the closing part 127 is equal, while the opening area of the opening / closing part 117 is a size multiplied by the number of valve elements 117e. As a result, it is possible to achieve both a reduction in the closing time and an increase in the opening area.

  Also, for example, unlike the present embodiment, in a mode in which the closing component is inserted into a port that opens upward, the molten metal flows over the entire circumference of the closing component and solidifies. In another aspect, the molten metal solidifies on both the fixed mold side and the movable mold side with respect to the closing component. As a result, the metal material cannot be peeled from the closing part with the opening of the mold, and an operation of pulling out the valve including the closing part and the port from the mold before the mold opening is required. On the other hand, the valve 109 of the present embodiment is of a slide type in which the closing member 127 moves in a direction intersecting with the opening direction of the inner port 125a. be able to. Consequently, the operation of pulling out the valve 109 from the mold 101 is unnecessary.

  Further, in the present embodiment, the valve 109 has at least a first portion and a second portion (the fixed base 119F and the movable base 119M) which are combined with each other by closing the mold 101 to form the valve body 125. . The opening direction of the port (for example, the inner port 125a) is a direction that intersects (for example, is orthogonal) to the opening and closing direction of the mold 101. The plurality of inner ports 125a are configured between the fixed base 119F and the movable base 119M.

  In this case, for example, as compared with a mode in which the inner port 125a penetrates in the mold opening / closing direction (this mode is also included in the technology according to the present disclosure), the inner surface of the inner port 125a is visually recognized and cleaned in the mold open state. It's easy to do. Therefore, for example, when the die material is extruded from the movable mold 105 and the metal material does not peel off from the inner port 125a but remains in the inner port 125a, it is easy to find and remove the metal material. is there.

  Further, in the present embodiment, the valve 109 further includes a plurality of push pins 149 that are movably inserted in the mold opening and closing direction with respect to the fixed base 119F and the movable base 119M, and that enter and exit the plurality of inner ports 125a. I have.

  Here, as the diameter of the inner port 125a in the z direction (moving direction of the closing part 127) is reduced, the diameter of the inner port 125a in the x direction (mold opening and closing direction) is increased, and the number of the inner ports 125a is increased. The opening area of the opening / closing portion 117 can be increased with respect to the moving distance of the closing component 127. On the other hand, when the dimensions and the like are set in this way, the inner surface area of the plurality of inner ports 125a is larger than the volume. Consequently, the solidified metal material is less likely to be peeled off from the inner surface of the inner port 125a. However, by providing the extrusion pins 149 for each of the plurality of inner ports 125a, it is possible to reduce the possibility that the solidified metal material remains in the inner ports 125a.

  Further, in the present embodiment, the valve 109 (upstream channel 121) has a first channel 129 and a second channel 131 extending from the first channel 129. One end of the first flow path 129 communicates with the inside of the mold 101, and the other end is in contact with the closing component 127, and at least a part including the other end extends in the moving direction (z direction) of the closing component 127. I have. The second flow path 131 has a meandering portion 131a extending meandering in a zigzag manner. The plurality of inner ports 125a are open to the side surface of the flow path of the meandering portion 131a that is farthest from the first flow path 129 among the plurality of flow paths extending in the z direction.

  As described above, with such a configuration, the closing component 127 can be closed using the pressure of the molten metal, and the possibility that the molten metal reaches the inner port 125a before the closing component 127 is closed can be suppressed as described above. Here, if an attempt is made to increase the opening area of the opening / closing portion 117 while shortening the moving distance of the closing component 127, the number of valve elements 117e increases, and the opening / closing portion 117 becomes longer in the z direction. By providing the meandering portion 131a so as to reciprocate in the z direction, the minimum simple shape (for example, a rectangular parallelepiped) in which the valve 109 can be accommodated can be reduced. That is, the distance of the second flow path 131 can be secured long while the size of the valve 109 is reduced.

  In the above embodiment, each of the inner port 125a and the outer port 125b is an example of a port. The fixed valve unit 111F or the fixed base 119F is an example of a first portion. The moving valve unit 111M or the moving base 119M is an example of a second portion.

(Modification)
Hereinafter, various modifications of the technology according to the present disclosure will be described. In the description of the modification, basically, only the differences from the embodiment will be described. Items not specifically mentioned may be the same as in the embodiment. Further, even if the number of ports and the like is different from that of the embodiment, the same reference numerals as those of the embodiment may be given for convenience of explanation.

(Position relationship between port and closing part)
In the embodiment, the valve body 125 has a space 125s, an inner port 125a, and an outer port 125b. The space 125s accommodates the closing part 127 movably. The inner port 125a opens to the space 125s, and communicates the space 125s with the inside of the mold 101. The outer port 125b opens to the space 125s, and communicates the space 125s with the outside of the mold 101. The closing part 127 closed both the inner port 125a and the outer port 125b in the closed position, and let the inner port 125a and the outer port 125b pass in the open position.

  However, the valve body may be configured to have only one of the inner port and the outer port in the embodiment.

  FIG. 11A is a schematic diagram illustrating a modified example in which only the port 225a corresponding to the inner port 125a is provided.

  This figure shows a cross section of a valve 209 according to a modification. As shown by a white arrow, the upstream flow path 221 communicating with the inside of the mold 101 (see FIG. 1) is located on the + x side, and the downstream passage communicating with the outside of the mold 101 on the −x side. The channel 223 is located. The valve main body 225 includes a wall (symbol is omitted) that separates the upstream flow path 221 and the downstream flow path 223. A plurality of ports 225a are arranged in the wall in the z direction. The closing component 227 is located on the downstream flow path 223 side with respect to the plurality of ports 225a, and is movable in the z direction.

  FIG. 11B is a schematic diagram illustrating a modified example in which only the port 325b corresponding to the outer port 125b is provided.

  This figure shows a cross section of a valve 309 according to a modified example, and has an upstream channel 221, a downstream channel 223, and a closing part 227 like the valve 209. The valve body 325 of the valve 309 includes a wall that separates the upstream flow path 221 and the downstream flow path 223, similarly to the valve body 225 of the valve 209. The wall has a plurality of ports. 325b are arranged in the z direction. However, the wall of the valve main body 325 is located on the downstream side flow path 223 side with respect to the closing component 227, contrary to the wall of the valve main body 225.

  Also in the configuration illustrated in FIGS. 11A and 11B, the flow of the gas and the molten metal from the upstream flow path 221 to the downstream flow path 223 can be blocked. Further, since the plurality of ports 225a or 325b are arranged in the moving direction of the closing component 227, the opening area can be increased with respect to the moving distance of the closing component 227 as in the embodiment.

  In the configuration in which the inner port 125a and the outer port 125b are provided and both are closed by the plurality of closing portions 227a as in the embodiment, the flow of gas and / or molten metal can be more reliably inhibited. . In addition, in the embodiment and the configuration in which the port is provided on the inner side of the mold with respect to the closing part as shown in FIG. 11A, the outside of the mold with respect to the closing part as shown in FIG. Compared to a configuration in which the port is provided only on the side, for example, the possibility that the molten metal flows into the closing part is reduced. As a result, the burden of maintenance on the closing parts is reduced.

(Port direction)
In the embodiment, the inner port 125a, the opening 127b (the valve channel 117a), and the outer port 125b are opened in a direction intersecting (for example, orthogonally) to the mold opening and closing direction. However, these opening directions may be directions (for example, parallel) along the mold opening / closing direction.

  FIG. 12 is a diagram showing a valve 409 according to a modification according to such an opening direction.

  In this figure, the y direction is the mold opening / closing direction as in the embodiment. More specifically, the + y side is the movable mold 405 side, and the −y side is the fixed mold 403 side. The upstream flow path 421 communicating with the inside of the mold is configured between the fixed base 419F and the movable base 419M by closing the mold. The downstream channel 423 communicating with the outside of the mold is formed in the fixed base 419F. The valve body 425 is a part of the fixed base 419F. The closing component 127 is accommodated in a space 425s formed in the fixed base 419F (valve main body 425), and is movable in the z direction with respect to the valve main body 425. The inner port 425a, the outer port 425b, and the opening 427b are open in the mold opening / closing direction.

  Even in such a configuration, as in the embodiment, since the plurality of inner ports 425a and the like are arranged in the moving direction of the closing component 127, the opening area can be increased with respect to the moving distance of the closing component 127. it can. The metal material solidified in the inner port 425a is pulled out of the inner port 425a by opening the mold, as in the embodiment.

  The configuration in which the port and the like are opened in the direction orthogonal to the mold opening and closing direction as in the embodiment makes it easier to clean the inner port 125a, for example, as already described, as compared with the configuration of the modification in FIG. . Further, in the configuration of the embodiment, it is easy to provide the push pin 149 in the inner port 125a. Furthermore, when the closing part 127 is driven by the pressure of the molten metal, the first flow path 129 is basically provided between the fixed mold 103 and the movable mold 105 so that the solidified molten metal can be taken out with opening of the mold. Be composed. The embodiment is easy to adopt such a configuration.

(First Modification of Shape of Closing Part)
FIG. 13A is a perspective view of a closing part 527 according to a modification. FIG. 13B is a schematic view including a cross-sectional view of a part of the closing component 527 and its surroundings viewed in a direction from the upstream channel 121 (see FIG. 4) to the downstream channel 123 (see FIG. 4). It is. The closing component 527 can be used in place of the closing component 127 of the embodiment. However, for ease of illustration, it is assumed that the number of inner ports 125a and outer ports 125b (see FIG. 4) is two.

  As shown in this figure, the opening 527b connecting the inner port 125a and the outer port 125b may be a concave groove instead of a through hole. Note that the shape of the concave groove is, for example, the opening part described in the embodiment except that the width (y direction) extends to one side (+ y side) of the closing part 527 in the mold opening and closing direction. It may be the same as the through hole of 127b.

  The concave groove (opening portion 527b) is, for example, a side of the closing component 527 in the mold opening / closing direction that is not the base 119 (here, the fixed base 119F) to which the closing component 527 is attached. ) (Here, the side surface on the + y side). Therefore, when the closing part 527 is separated from the moving base 119M by opening the mold, the inner surface of the groove is exposed. When the fixed base portion 119F and the moving base portion 119M are united by closing the mold to form the valve body 125, as shown by an imaginary line in FIG. 13B, the closing part 527 (the inner surface of the concave groove) is formed. A valve flow path 517a is formed between the moving base 119M (valve body 125) and the inner port 125a and the outer port 125b.

  In the case where the opening 127b is a through hole as in the embodiment, for example, the valve channel 117a is highly sealed. Further, for example, in the case where the opening 527b is a concave groove as in the modification shown in FIGS. 13A and 13B, for example, the inner surface of the concave groove is formed on the front side of the fixed base 119F by opening the mold. Since it is exposed to the (+ y side), cleaning is easy. Further, for example, when an open portion is formed by cutting an integrally formed closed part, the through hole must be machined from the through direction (x direction), but the concave groove is formed in the x direction. In addition, processing can be performed from the + y side. As a result, the processing is facilitated and / or the degree of freedom of the shape is improved.

(Second Modification of Shape of Closing Part)
FIG. 14A is a perspective view of a closing component 627 according to a modification. FIG. 14B is a schematic diagram (a diagram corresponding to FIG. 6A and the like) of the closing component 627 and its surroundings from the front side of the fixing base 119F.

  The closing component 627 of this modification can basically be used in place of the closing component 127 of the embodiment. In the present modification, the configuration other than the closing parts is partially different from the embodiment, but the configuration other than the closing parts is denoted by the reference numeral of the embodiment for convenience. 13A and 13B, it is assumed that the number of the inner port 125a and the number of the outer port 125b are two for ease of illustration. are doing.

  In the closing part 627 of this modification, the opening 627b is formed by a concave groove formed on the side surface in the mold opening / closing direction, similarly to the modification of FIGS. 13 (a) and 13 (b). However, the opening 627b does not extend linearly but has a bent portion. The bent portion may be a part of the opening 627b (the example shown) or may be the whole. From another viewpoint, the positions of the inner port 125a and the outer port 125b in the moving direction (z direction) of the closing component 627 may be different from each other.

  As described above, when the opening 627b includes a bent portion, for example, when the molten metal flows into the opening 627b, the possibility that the molten metal reaches the outer port 125b can be reduced. When the opening is a through hole, it is difficult to form a bent portion, and it is also difficult to clean the bent portion. However, since the opening 627b is formed by the concave groove, such a disadvantage is solved.

(Third Modification of Shape of Closing Part)
FIG. 15 is a perspective view of a closing component 727 according to a modification.

  As shown in this figure, the plurality of opening portions 727b may merge in the closing part 727. From another viewpoint, the plurality of closing portions 727a and the plurality of opening portions 727b may be arranged alternately in at least the port (here, the inner port 125a) side in the movement direction (z direction) of the closing component 727. It is not necessary to arrange them alternately throughout. However, a portion before the merging may be regarded as a plurality of closed portions 727a and a plurality of open portions 727b, and thus, the entirety of the plurality of closed portions 727a and the plurality of open portions 727b may be regarded as being alternately arranged.

  Further, in this modified example, the joined open portions are open upward. Although not particularly shown, in this modification, for example, an outer port that is opened and closed by the closing part 727 is not provided, and a space 125s (see FIG. 6A) that accommodates the closing part 727 is outside the mold. By communicating, the gas that has passed through the opening 727b is discharged to the outside of the mold.

  The technology according to the present disclosure is not limited to the above embodiment or the modified example, and may be implemented in various modes.

  For example, the die-casting machine is not limited to the horizontal clamping horizontal injection, but is not limited to the vertical clamping vertical injection or the horizontal clamping vertical injection, but may be the vertical clamping horizontal injection. Further, the die casting machine may be a hydraulic type (hydraulic type), an electric type, or a combination of both types. Further, the die casting machine may be one that can be used not only for forming a molten metal but also for forming a metal material in a solid-liquid coexisting state. Further, the die casting machine is not limited to the one that performs the vacuum die casting method. The valve may open and close an exhaust passage for discharging a gas pushed out of the mold by the molten metal injected into the mold in a normal die casting machine.

  In the embodiment, the port of the valve body and the opening of the closing part are arranged in a single row in the moving direction of the closing part. However, the ports and / or openings may be arranged in two or more rows in the movement direction. In two or more rows of ports, the positions of the closing parts in the moving direction of the closing parts may be the same in the rows, or may be different from each other (for example, they may be arranged in a staggered manner).

  The opening of the closing component is not limited to the one configured by the through hole or the concave groove on the side surface. For example, the closing component may have a configuration in which, similarly to a general spool, the enlarged diameter portion and the reduced diameter portion having a smaller diameter than the enlarged diameter portion are alternately provided in the movement direction. In this case, the enlarged diameter portion is a closed portion, and the reduced diameter portion is an open portion. Then, as analogized from the modified example of FIG. 13 (a), a flow path is formed between the reduced diameter portion and the valve main body that accommodates the closing part, through which the inside and outside of the mold pass.

  The moving direction of the closing component is not limited to the linear direction. For example, the rotation direction may be used. That is, the valve may be configured as a rotary slide valve. A plurality of ports, a plurality of closing portions, and a plurality of opening portions may be arranged along the circumferential direction.

  In the embodiment, the closing component is driven from the open position to the closed position by the pressure of the molten metal. However, the closing component may be driven without using the pressure of the molten metal. As such a drive mechanism, various known mechanisms may be used. For example, the actuator described in the embodiment (for example, a hydraulic cylinder device 135, a pneumatic cylinder or a linear motor) may be used. .

  Further, in the above-described embodiment, various known methods may be employed as a method of determining the timing of closing the valve. For example, a sensor that detects the arrival of the molten metal may be provided at an appropriate position in the mold or the valve, and when the arrival of the molten metal is detected by the sensor, the valve may be closed by the driving mechanism. Examples of the sensor include a temperature sensor, a pressure sensor, and a conduction sensor. Further, the timing for closing the valve may be specified based on the injection speed and / or the injection pressure detected by the injection device.

  In the embodiment, the mode in which a plurality of valve elements including the port, the closing portion, and the opening portion are arranged in the moving direction of the closing component has been described. However, the number of valve elements may be one. Also in this case, for example, as described in the embodiment, there is an effect that the operation of pulling out the valve from the mold body before opening the mold can be unnecessary.

  The valve (valve unit) may be distributed only by the valve, may be distributed in combination with the mold body (a mold including the valve may be distributed), and does not include the mold. It may be distributed (without the mold body) in combination with the die casting machine (the machine body and the control unit), or in combination with the mold body and the die casting machine (the machine body and the control unit) not including the mold. It may be distributed.

DESCRIPTION OF SYMBOLS 1 ... Die-casting machine, 101 ... Die, 109 ... Valve, 113 ... Exhaust flow path, 125 ... Valve body, 125a ... Inner port (port), 125b ... Outer port (port), 127 ... Closing part, 127a ... Closing part .

Claims (12)

A valve for opening and closing an exhaust passage for exhausting the inside of the mold,
A valve body having a port through which the inside and outside of the mold pass;
By a movement in a predetermined movement direction with respect to the valve body, a closing part that moves between a closed position that closes the port and an open position that opens the port,
Has,
The valve body has a plurality of ports that are arranged in the movement direction and open in an opening direction that intersects the movement direction.
The closure component is
A plurality of closing portions for closing the plurality of ports on one side in the opening direction when the closing component is at the closed position,
A plurality of open portions for opening the plurality of ports to the one side in the opening direction when the closing component is at the open position,
A valve in which the plurality of port-side portions of the plurality of closing portions and the plurality of port-side portions of the plurality of opening portions are alternately arranged in the moving direction. The valve according to claim 1, wherein the plurality of opening portions are a plurality of through holes penetrating the closing component. A first portion and a second portion that are combined with each other by closing the mold to form at least the valve body;
The opening direction and the moving direction are directions intersecting the opening and closing direction of the mold.
The closing part is separable from the second part together with the first part by opening the mold,
The plurality of open portions are concave grooves formed on a surface on the second portion side of the closing component,
The valve according to claim 1, wherein a flow path communicating with the port is formed between an inner surface of the concave groove and the second portion by closing the mold. The valve according to any one of claims 1 to 3, wherein the one side of the closing component in the opening direction is a side communicating with the outside of the mold. The valve body is
A space accommodating the closing component movably in the moving direction,
The plurality of ports that open to the space and communicate the space and the inside of the mold,
A plurality of outer ports that open into the space and communicate the space and the outside of the mold,
The said closing part closes both the said several port and the said several outer port in the said closed position, and makes the said several port and the said several outer port pass in the said open position. valve. A first portion and a second portion that are combined with each other by closing the mold to form at least the valve body;
The opening direction is a direction crossing the opening and closing direction of the mold,
The valve according to any one of claims 1 to 5, wherein the plurality of ports are configured between the first portion and the second portion. The method according to claim 4, further comprising a plurality of push pins that are movably inserted into the first portion or the second portion in the opening and closing direction of the mold and that enter and exit the plurality of ports. The valve according to claim 6, wherein A first flow path having one end communicating with the inside of the mold, the other end being in contact with the closing component, and at least a portion including the other end extending in the movement direction;
A second flow path extending from the first flow path;
Has further,
The second flow path has a meandering portion extending in a meandering manner so as to reciprocate in the moving direction,
The plurality of ports are opened on a side surface of a flow path of the meandering part that is the most distant from the first flow path among a plurality of flow paths extending in the movement direction. A valve according to the item. An upstream channel that communicates with the inside of the mold and has the plurality of ports open on the inner surface thereof,
Of the upstream flow path, a trap flow path connected to a position opposite to a side communicating with the inside of the mold than a position where the plurality of ports are open,
A first portion and a second portion which are combined with each other by closing the mold;
Has,
The trap flow path is configured between the first portion and the second portion, and has a portion extending in a wave shape with the opening and closing direction of the mold as a wave height. Item 9. The valve according to any one of Items 1 to 8. A valve for opening and closing an exhaust passage for exhausting the inside of the mold,
A valve body having a port through which the inside and outside of the mold pass;
By a movement in a predetermined movement direction with respect to the valve body, a closing part that moves between a closed position that closes the port and an open position that opens the port,
Has,
The port is open in an opening direction crossing the movement direction,
The closure component is
A closing portion that closes the port on one side in the opening direction when the closing component is in the closed position;
An opening for opening the port to the one side in the opening direction when the closing part is in the open position,
The opening is a through hole that penetrates the closing component, or a concave groove formed on a surface of the closing component. A valve according to any one of claims 1 to 10,
A mold body forming a cavity communicating with the valve;
Having a mold. A valve according to any one of claims 1 to 10,
A mold clamping device for clamping the mold,
A vacuum device for exhausting the inside of the mold through the valve,
An injection device for injecting a metal material before solidification into the mold,
An extrusion device for extruding the solidified metal material from the inside of the mold,
Having a die casting machine.

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