JP2019058927A - Heat shielding cover and casting apparatus - Google Patents

Abstract

To suppress the temperature increase of an upper component accompanying preheat treatment of a mold.SOLUTION: A first heat shielding cover 41 is used for a casting apparatus 50 provided with upper and lower molds 1 and 2, an opening/closing mechanism for opening/closing the molds by lifting the upper mold 1, and an upper component disposed above the upper mold 1, and shields the upper component from heat in preheat treatment. The first heat shielding cover 41 is provided with: a pair of plate members 41a, 41b; a flow path 41c formed between the pair of plate members 41a, 41b; and a fitting part 41d for fitting the pair of plate members 41a, 41b above a lower end 1a of the upper mold 1. The flow path 41c has an inlet 41g through which air heated in a space S between the closed upper and lower molds 1 and 2 flows in, and an outlet 41h which is separated more from the space S than the inlet 41g and through which the air having flown in through the inlet 41g flows out in a direction intersecting a perpendicular direction.SELECTED DRAWING: Figure 4

Description

  The present disclosure relates to a heat shield cover and a casting apparatus.

  Patent Document 1 discloses an opening / closing mechanism that performs mold closing and mold opening of an upper mold and a lower mold by raising and lowering any one of the upper mold and the lower mold and the upper mold and the lower mold. And a casting apparatus is disclosed. In this apparatus, the upper mold and the lower mold are vertically separated by the opening and closing mechanism, whereby mold opening is performed.

Patent No. 5880792

  In the casting apparatus described in Patent Document 1, a heat source such as a burner may be disposed between the upper mold and the lower mold in an open mold state, and the upper mold and the lower mold may be preheated. In this case, the heated air generates an upward air flow, and there is a possibility that the upper part such as a sensor disposed above the mold in the casting apparatus may be heated.

  For this reason, in the present technical field, it is desired to suppress the temperature rise of the upper part accompanying the preheating treatment of the mold.

  One aspect of the present disclosure includes an upper mold and a lower mold, and an opening / closing mechanism that performs mold closing and mold opening of the upper mold and the lower mold by lifting and lowering any one of the upper mold and the lower mold. And an upper part disposed above the upper mold, and the heat shielding cover is used in the casting apparatus and shields heat to the upper part in the preheating process of the upper mold and the lower mold. The heat shield cover includes a pair of plate members disposed facing each other, a flow path formed between the pair of plate members, and a mounting for mounting the pair of plate members above the lower end of the upper mold. A flow path in which the air flow in the space between the upper mold and the lower mold in the mold-opened state and the direction in which the air flowing into the inlet intersects the vertical direction And an outlet to the outlet.

  In the heat shield cover, the pair of plate members is mounted above the lower end of the upper mold by the mounting portion. For this reason, the air heated by the preheating treatment in the space between the upper mold and the lower mold in the mold-opened state rises and reaches the pair of plate members. Since a flow passage is formed between the pair of plate members, the heated air flows into the flow passage inlet, is accelerated in the flow passage, and intersects the vertical direction from the flow passage outlet. Flow out. Thus, the heat shield cover can control the flow of the heated air by the flow path and allow the air to flow out in the direction intersecting the vertical direction, thereby suppressing the air from flowing toward the upper part be able to. Thus, the heat shield cover can suppress the temperature rise of the upper part.

  The thermal barrier cover may further include a first straightening vane provided at the inlet for directing heated air to the inlet. In this case, the heat shield cover can further control the flow of the heated air by the first current plate.

  The heat shield cover may further include a second straightening vane provided at the outlet for straightening the flow of air flowing out of the outlet. In this case, the heat shield cover can further control the flow of the heated air by the second current plate.

  One aspect of the present disclosure includes an upper mold and a lower mold, and an opening / closing mechanism that performs mold closing and mold opening of the upper mold and the lower mold by lifting and lowering any one of the upper mold and the lower mold. A casting apparatus comprising: an upper part disposed above the upper mold; and a first heat shielding cover which shields heat from the upper part in the preheating treatment of the upper mold and the lower mold. The first heat shielding cover includes a pair of first plate members arranged to face each other, a first flow path formed between the pair of first plate members, and a pair of first plate members as an upper mold A first mounting portion for mounting above the lower end of the first channel, the first channel being configured to receive heated air flowing in a space between the upper mold and the lower mold in a mold-opened state; And a first outlet through which the air introduced into the first inlet flows out in a direction intersecting the vertical direction.

  In this casting apparatus, the pair of first plate members in the heat shield cover is attached above the lower end of the upper mold by the first attachment portion. For this reason, the air heated by the preheating treatment in the space between the upper mold and the lower mold in the mold-opened state rises and reaches the pair of first plate members. Since the first flow path is formed between the pair of first plate members, the heated air flows into the first inlet of the first flow path, and is accelerated in the first flow path, thereby Flow out from the first outlet of the flow path in the direction intersecting the vertical direction. In this manner, the heat shield cover can control the flow of heated air by the first flow path and allow the air to flow out in the direction intersecting the vertical direction, so that the air is directed to the upper part. It can be suppressed. Thus, the casting apparatus can suppress the temperature rise of the upper part.

  The casting apparatus further includes a second heat shielding cover that shields heat from upper parts in the preheating processing of the upper mold and the lower mold, and the second heat shielding cover includes a pair of second heat shielding covers disposed opposite to each other. A second plate member, a second flow path formed between the pair of second plate members, and a second attachment portion for mounting the pair of second plate members above the pair of first plate members; The second flow path may have a second inlet through which the air flowing out of the first outlet flows, and a second outlet through which the air flowing into the second inlet may flow out in a direction perpendicular to the vertical direction. Good. In this case, the second heat shield cover includes a pair of second plate members, and a second flow path is formed between the pair of second plate members. The air that has flowed out from the first outlet of the first channel of the first heat shield cover flows into the second inlet of the second channel, is accelerated in the second channel, and is discharged to the second outlet of the second channel. Flow out in the direction perpendicular to the vertical direction. As described above, the casting apparatus may further control the flow of heated air by the first flow path by the combination of the first heat shielding cover and the second heat shielding cover, and then control the flow by the second flow path. it can.

  The opening and closing mechanism performs mold closing and mold opening of the upper mold and the lower mold by moving the upper mold up and down, and the first heat shielding cover is attached to the upper mold die base which moves up and down together with the upper mold. It may be attached. In this case, the casting apparatus can operate the first heat shield cover and the second heat shield cover separately by the second heat shield cover being attached to the member that does not move up and down together with the upper mold.

  In this casting apparatus, an upper frame to which an upper mold is attached, a lower frame to which a lower mold is attached, and an upper end thereof are rotatably connected to the upper frame, and a lower end is pivoted to the lower frame The main link member, which is connected in a possible manner and has a rotation axis at its center, and is disposed parallel to the main link member, its upper end is rotatably connected to the upper frame, and its lower end is rotated to the lower frame The upper portion further includes: a sublink member that is movably connected and has a rotation axis at its central portion; and a drive unit that is connected to the rotation axis of the main link member and rotates the main link member around the rotation axis The frame, the lower frame, the main link member and the sub link member may constitute a parallel link mechanism. Also in the casting apparatus operated by such a parallel link mechanism, the first heat shielding cover can suppress the temperature rise of the upper part accompanying the preheating treatment of the mold.

  According to the present disclosure, the temperature rise of the upper part associated with the preheating process of the mold is suppressed.

FIG. 1 is a front view of a casting apparatus according to the first embodiment. FIG. 2 is a side view of the casting apparatus of FIG. FIG. 3 is a view showing a cross section of the upper mold and the lower mold in FIG. FIG. 4 is an enlarged cross-sectional view of the first heat shield cover and the second heat shield cover. FIG. 5A is a bottom view of the first heat shield cover, and FIG. 5B is a bottom view of the second heat shield cover. FIG. 6 is an enlarged side view showing the third heat shielding cover. FIG. 7 is a flowchart showing a casting method by the casting apparatus of FIG. FIG. 8 is a view as viewed in the direction of arrows AA in FIG. FIG. 9 shows a second separated state in which the upper and lower molds slide by the operation of the parallel link mechanism, and is a view for explaining the initial state of the manufacturing process. FIG. 10 is a view for explaining a mold closed state in which the upper mold and the lower mold are closed. FIG. 11 is a view obtained by rotating the mold-closed upper and lower molds by 90 °. FIG. 12 is a diagram in which the upper mold is pulled up to an intermediate position. FIG. 13 is a view in which the upper mold and the lower mold are slid into a first separated state. FIG. 14 is a diagram in which the upper mold is pulled up to the rising end from the state of FIG. 13. FIG. 15 is a front view of a casting apparatus according to a second embodiment. Figure 16 is a side view of the casting apparatus of Figure 15; FIG. 17 is a view showing a cross section of the upper mold and the lower mold in FIG.

  Hereinafter, embodiments will be described with reference to the attached drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. Also, the dimensional ratios in the drawings do not necessarily match those in the description. Moreover, the words "upper", "lower", "left" and "right" are based on the illustrated state and are convenient.

First Embodiment
The configuration of the casting apparatus 50 will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of a casting apparatus according to the first embodiment. FIG. 2 is a side view of the casting apparatus of FIG. The X direction and the Y direction in the figure are horizontal directions, and the Z direction is a vertical direction. Hereinafter, the X direction is also referred to as the left and right direction, and the Z direction is also referred to as the up and down direction.

  The casting apparatus 50 is a so-called gravity-type tilting mold casting apparatus that uses a gravity to pour molten metal, and casts a casting using the upper mold 1 and the lower mold 2 that can be opened and closed and can be tilted. . The material of the molten metal to be poured does not matter. As a molten metal, an aluminum alloy, a magnesium alloy, etc. are used, for example. The casting apparatus 50 has a controller and is configured to be able to control the operation of the components.

  As shown in FIGS. 1 and 2, the casting apparatus 50 includes, for example, a base frame 17, an upper frame 5, a lower frame 6, an opening / closing mechanism 21, and a pair of left and right main link members 7 (first main link members 7a, The two main link members 7 b), a pair of left and right sub link members 8 (first sub link member 8 a, second sub link member 8 b), a rotary actuator 16 (drive unit), and a ladle 25 are provided.

  The base frame 17 has a base 18, a drive side support frame 19 and a driven side support frame 20. The base 18 is a substantially flat plate-like member configured by combining a plurality of members, and is horizontally provided on the installation surface of the casting apparatus 50. The drive-side support frame 19 and the driven-side support frame 20 are erected on the base 18 so as to face each other in the left-right direction (horizontal direction), and are fixed to the base 18. A pair of tilting and rotating bearings 9 is provided at the upper end portion of the drive side support frame 19 and the upper end portion of the driven side support frame 20.

  The upper frame 5 is disposed above the base frame 17. The upper mold 1 is attached to the upper frame 5. Specifically, the upper mold 1 is attached to the lower surface of the upper frame 5 via the upper die base 3. The upper frame 5 is provided with an open / close mechanism 21 for moving the upper die 1 up and down. Specifically, the upper frame 5 incorporates the opening and closing mechanism 21 and holds the upper mold 1 so as to be able to move up and down by the opening and closing mechanism 21.

  The opening and closing mechanism 21 includes a first hydraulic actuator 22, a pair of left and right guide rods 23, and a pair of left and right guide cylinders 24. The first hydraulic actuator 22 performs mold closing or mold opening of the upper mold 1 and the lower mold 2 by raising and lowering any one of the upper mold 1 and the lower mold 2. In the present embodiment, the first hydraulic actuator 22 raises and lowers the upper mold 1. The lower end portion of the first hydraulic actuator 22 is attached to the upper surface of the upper die base 3. The upper die base 3 moves up and down together with the upper die 1. The first hydraulic actuator 22 extends in the vertical direction (vertical direction, here, the Z direction) to lower the upper mold 1 via the upper die base 3 and shorten the upper die 1 in the vertical direction. Raise the upper mold 1 through 3. The first hydraulic actuator 22 is a hydraulic cylinder as an example. The guide rod 23 is attached to the upper surface of the upper die base 3 through a guide cylinder 24 attached to the upper frame 5.

  The lower frame 6 is disposed above the base frame 17 and below the upper frame 5. The lower mold 2 is attached to the lower frame 6. Specifically, the lower mold 2 is attached to the upper surface of the lower frame 6 via the lower die base 4. In the state shown in FIGS. 1 and 2, the upper frame 5 and the lower frame 6 face each other in the vertical direction. Similarly, the upper mold 1 and the lower mold 2 are opposed to each other in the vertical direction. The opening / closing mechanism 21 performs mold closing or mold opening of the upper mold 1 and the lower mold 2 by moving the upper mold 1 up and down.

  The first main link member 7a is an elongated member. The first main link member 7a is, for example, a rod-like member having a rectangular cross section. An upper end portion of the first main link member 7a is rotatably connected to the upper frame 5, a lower end portion is rotatably connected to the lower frame 6, and a tilting rotation shaft 10 is provided at a central portion thereof. The first main link member 7a has a main link upper rotation shaft 11 at its upper end and a main link lower rotation shaft 12 at its lower end. In the present embodiment, two main link members are provided. The second main link member 7b has the same configuration as the first main link member 7a. The pair of main link members 7 are disposed to face each other in the left-right direction (horizontal direction here, the X direction), and connect the upper frame 5 and the lower frame 6 respectively. Here, the pair of main link members 7 is disposed opposite to and in parallel with the upper mold 1 and the lower mold 2 interposed therebetween.

  The central portions of the pair of main link members 7 are rotatably connected to the pair of tilting rotary bearings 9 via the pair of tilting rotary shafts 10. The upper end portions of the pair of main link members 7 are rotatably connected to the pair of side surfaces 5 a of the upper frame 5 via the pair of main link upper rotation shafts 11. The lower end portions of the pair of main link members 7 are rotatably connected to the pair of side surfaces 6 a of the lower frame 6 via the pair of main link lower rotation shafts 12. When the upper mold 1 and the lower mold 2 are closed, in the depth direction (Y direction) orthogonal to the left and right direction and the vertical direction, the pair of main link members 7 are respectively the upper mold 1 and the lower mold 2 The attachment position of the pair of main link members 7 to the upper frame 5 and the lower frame 6 is set to be located at the center.

  The first sub link member 8a is a long member. The first sub link member 8a is, for example, a rod-like member having a rectangular cross section. The first sub link member 8a is disposed in parallel with the first main link member 7a, and its upper end is rotatably connected to the upper frame 5, and its lower end is rotatably connected to the lower frame 6, The sub link central portion rotation shaft 15 is provided at the central portion thereof. The first sub link member 8a has a sub link upper rotation shaft 13 at its upper end and a sub link lower rotation shaft 14 at its lower end. In the present embodiment, two sub link members are provided. The second sub link member 8 b (not shown) has the same configuration as the first sub link member 8 a. The pair of sub link members 8 are disposed to face each other in the left-right direction, and connect the upper frame 5 and the lower frame 6. The pair of sub link members 8 is disposed on the pair of side surfaces 5 a and the pair of side surfaces 6 a so as to be parallel to the pair of main link members 7. The length of the sub link member 8 is the same as the length of the main link member 7.

  The upper end portions of the pair of sub link members 8 are rotatably connected to the pair of side surfaces 5 a of the upper frame 5 via the pair of sub link upper rotation shafts 13. The lower end portion of the sub link member 8 is rotatably connected to the pair of side surfaces 6 a of the lower frame 6 via the pair of sub link lower rotation shafts 14. The attachment position of the sub link member 8 is on the side where the ladle 25 is disposed with respect to the main link member 7. The sub link central portion rotation axis 15 is located on the base frame 17. In the state of FIG. 1 and FIG. 2, the sub link central portion rotation shaft 15 is positioned on the upper surface of the drive side support frame 19.

  Thus, a parallel link mechanism (first parallel link mechanism) is configured by the upper frame 5, the lower frame 6, the first main link member 7a, and the first sub link member 8a. Similarly, a parallel link mechanism (second parallel link mechanism) is configured by the upper frame 5, the lower frame 6, the second main link member 7b, and the second sub link member 8b. The two parallel link mechanisms are disposed to face each other in parallel with the upper mold 1 and the lower mold 2 interposed therebetween.

  The tilt rotation shaft 10 of the first main link member 7 a is held by the base frame 17 by a tilt rotation bearing 9 provided outside the first parallel link mechanism. The center of rotation of the tilting rotary shaft 10 of the first main link member 7a coincides with the center of gravity of the rotating body including the upper mold 1 and the lower mold 2 which are closed or opened, the upper frame 5 and the lower frame 6 ing. Similarly, the tilting rotary shaft 10 of the second main link member 7 b is held by the base frame 17 by a tilting rotary bearing 9 provided outside the second parallel link mechanism. The center of rotation of the tilting rotary shaft 10 of the second main link member 7b coincides with the center of gravity of the rotating body including the upper mold 1 and the lower mold 2 which are closed or opened, the upper frame 5 and the lower frame 6 ing. Here, "coincidence" is not limited to the case where both are completely coincident, but also includes the case where there is an error due to the difference between the weight of the upper mold 1 and the weight of the lower mold 2.

  The rotary actuator 16 is disposed on the drive side support frame 19. The rotary actuator 16 is provided in connection with the tilting rotary shaft 10 of one of the pair of main link members 7. The rotary actuator 16 may operate electrically, hydraulically or pneumatically. As an example, the rotary actuator 16 is a servomotor. The servomotor is connected to a power supply and operates by supplying power. The rotary actuator 16 functions as a drive unit for tilting or separating the upper mold 1 and the lower mold 2 in the horizontal direction.

  The tilting movement between the upper mold 1 and the lower mold 2 is performed by the rotary actuator 16 in a state in which the upper mold 1 and the lower mold 2 are closed by the opening / closing mechanism 21. It is done by rotating 10 by 45 ° to 130 °. The horizontal separation between the upper mold 1 and the lower mold 2 can be performed by the rotary actuator 16 with the first main link member 7 a in a state where the upper mold 1 and the lower mold 2 are opened by the opening / closing mechanism 21. The tilt rotation shaft 10 is rotated by a predetermined angle. Horizontal separation of the upper mold 1 and the lower mold 2 is realized by the action of the first parallel link mechanism by the rotary actuator 16. At this time, the second parallel link mechanism also acts in accordance with the movement of the first parallel link mechanism. The second parallel link mechanism is not essential. For example, the upper frame 5 and the lower frame 6 may be connected by only the first parallel link mechanism and the second main link member 7b. The upper frame 5 and the lower frame 6 may be connected by only the two sub link members 8b.

  The ladle 25 is attached to the upper end of the side surface of the lower mold 2. Inside the ladle 25 is a reservoir for storing the molten metal. The pouring spout 25a (see FIG. 8) of the rudder 25 is connected to the receiving spout 2a (see FIG. 8) of the lower mold 2.

  FIG. 3 is a view showing a cross section of the upper mold and the lower mold in FIG. Here, a state is shown in which a plurality of cores 34 are placed on the upper surface of the lower mold 2. As shown in FIG. 3, the casting apparatus 50 includes an extrusion plate 28 (upper extrusion plate), a pair of extrusion pins 26 (upper extrusion pins), a pair of return pins 27, and a plurality of push rods 29 (regulating members). And an extrusion mechanism 37 having the following. The pushing mechanism 37 is provided on the upper frame 5.

  The extrusion plate 28 is disposed in an internal space formed inside the upper end side of the upper mold 1. The pushing plate 28 is accommodated in the inner space in a state where it can move up and down. Each push pin 26 is provided on the lower surface of the push plate 28. Each extrusion pin 26 raises and lowers a hole passing from an inner space of the upper mold 1 to a cavity (upper cavity) forming a casting. Each extrusion pin 26 extrudes the casting in the cavity at its tip. Each return pin 27 is provided at a position different from the push pin 26 on the lower surface of the push plate 28. Each return pin 27 raises and lowers a hole passing from the inner space of the upper mold 1 to the lower surface of the upper mold 1. Each return pin 27 has its tip end abutted against the upper surface of the lower mold 2 in the process of closing the upper mold 1 and the lower mold 2, thereby raising the extrusion plate 28.

  Each push rod 29 is provided on the lower surface of the upper frame 5. Each push rod 29 is disposed on the lower surface of the upper frame 5 through the upper die base 3. Each push rod 29 is inserted into the hole penetrating from the upper surface of the upper mold 1 to the inner space, and the tip thereof is disposed above the extrusion plate 28 in the inner space. The length of each push rod 29 is set to a length that pushes down the pushing plate 28 when the first hydraulic actuator 22 is shortened and the upper die 1 is at the rising end. The rising end is the highest position of the upper mold 1 that can be taken by shortening the first hydraulic actuator 22. That is, each push rod 29 is inserted into the internal space by a predetermined length from the upper surface of the upper mold 1 through the hole penetrating to the internal space formed at the upper position of the upper mold 1, and the extrusion plate 28 Block the rise of

  The lower frame 6 incorporates a second hydraulic actuator 30. The second hydraulic actuator 30 is a hydraulic cylinder as an example. An upper end portion of the second hydraulic actuator 30 is attached to the lower surface of the pushing member 31. The pair of left and right guide rods 32 is attached to the lower surface of the pushing member 31 through a guide cylinder 33 attached to the lower frame 6.

  Similar to the upper mold 1, the lower mold 2 incorporates an extrusion plate 28 (lower extrusion plate) in which a pair of extrusion pins 26 (lower extrusion pins) and a pair of return pins 27 are connected. In the lower mold 2, the extruding member 31 ascends by the extension operation of the second hydraulic actuator 30, and pushes up the extruding plate 28, so that the pair of extruding pins 26 and the return pins 27 move up. There is. Each extrusion pin 26 extrudes the casting in the cavity (lower cavity) at its tip. At the time of mold closing, the return pins 27 of the upper mold 1 and the lower mold 2 are pushed back by the mating surfaces of the molds to which the tips of the return pins 27 face, or the tips of the return pins 27 which face. Along with this, the push pin 26 connected to the push plate 28 is also pushed back. Further, at the time of mold closing, the pushing member 31 comes to the position of the lowering end by the shortening operation of the second hydraulic actuator 30. The descent end is the lowest position of the lower mold 2 that can be taken by shortening the second hydraulic actuator 30.

  A pair of positioning keys 35 is attached to the lower periphery (lower end of the side surface) of the upper mold 1. A pair of key grooves 36 is provided on the upper periphery (upper end of the side surface) of the lower mold 2 so as to be engageable with the pair of positioning keys 35. The positioning key 35 and the key groove 36 constitute a positioning portion for positioning the upper mold 1 and the lower mold 2 in the horizontal direction. According to this positioning portion, since the upper mold 1 and the lower mold 2 are positioned in the horizontal direction, the upper mold 1 and the lower mold 2 can be prevented from being shifted and being closed. .

  The casting apparatus 50 includes the above-described opening / closing mechanism 21 as an upper part disposed above the upper mold 1. The upper part is a part necessary for the operation of the casting apparatus 50. For example, a sensor, piping, an actuator, etc. are mentioned as an upper part. Specifically, when the first hydraulic actuator 22 of the opening / closing mechanism 21 is a hydraulic cylinder, specifically, a proximity sensor (not shown) for detecting the position of the end of the hydraulic cylinder, piping (not shown) of the hydraulic cylinder, etc. It is mentioned as a part. The proximity sensor and piping of the hydraulic cylinder are disposed, for example, on the upper frame 5.

  FIG. 4 is an enlarged cross-sectional view of the first heat shield cover and the second heat shield cover. FIG. 5A is a bottom view of the first heat shield cover, and FIG. 5B is a bottom view of the second heat shield cover. FIG. 6 is an enlarged side view showing the third heat shielding cover. As shown in FIGS. 1 to 6, the casting apparatus 50 includes a first heat shielding cover 41, a second heat shielding cover 42, and a third heat shielding cover 43 for the casting apparatus. In the casting apparatus 50, the upper mold 1 and the lower mold 2 are preheated before the apparatus is started. The preheating process is performed using a heat source 44 such as a burner disposed in the space S between the upper mold 1 and the lower mold 2 in the mold-opened state. If the casting apparatus 50 is operated continuously, the preheating process is omitted. In FIGS. 2 and 3, the heat source 44 is not shown. In FIG. 3, the third heat shielding cover 43 is indicated by a broken line.

  The air heated by the preheating process produces an updraft. As a result, the temperature of the upper part is raised, and in particular, there is a risk that the proximity sensor and piping of the hydraulic cylinder may be damaged or damaged. Therefore, the first heat shield cover 41, the second heat shield cover 42, and the third heat shield cover 43 are all disposed above the lower end 1a of the upper mold 1 (that is, above the space S). Insulate the heat to the upper part in the heat treatment. In Figures 4 and 6, the flow H of the heated air is indicated by the arrows.

  As shown in FIG. 2, FIG. 4 and FIG. 5 (a), the first heat shielding cover 41 is attached to the side surface of the upper die base 3 which moves up and down together with the upper die 1. The first heat shield cover 41 is located above the ladle 25 and faces the ladle 25 in the vertical direction. The first heat shield cover 41 includes a pair of plate members 41a and 41b (a pair of first plate members), a flow path 41c (a first flow path), an attachment portion 41d (a first attachment portion), and an inlet flow straightening plate 41 e (first straightening vane) and an outlet straightening vane 41 f (second straightening vane). The pair of plate members 41a and 41b are connected to each other by a connecting member 41s such as a bolt, for example, and are opposed to each other in the vertical direction. Here, the plate member 41a is disposed upward, and the plate member 41b is disposed downward. The pair of plate members 41a and 41b have a rectangular shape in plan view.

  The flow path 41c is a gap formed between the pair of plate members 41a and 41b. The flow path 41c has a rectangular shape when viewed from the upper and lower direction. The flow path 41c has an inlet 41g (first inlet) into which the air heated in the space S (see FIG. 1) flows, and a direction (specifically, a horizontal direction) in which the air flowing into the inlet 41g intersects the vertical direction And an outlet 41 h (first outlet) flowing out to the Three sides of the flow path 41c having a rectangular shape when viewed from the up and down direction correspond to the inlet 41g, and the other side corresponds to the outlet 41h. The inlet 41g is disposed below the upper part. The outlet 41 h is farther from the space S in the Y direction than the inlet 41 g.

  The inlet straightening vane 41e is provided at the inlet 41g and guides the heated air from the lower space S (see FIG. 1) to the inlet 41g. The inlet straightening vane 41e is integrally formed with the plate member 41a. The inlet straightening vane 41e is formed of three plate members extending downward from the edge of the plate member 41a corresponding to the inlet 41g so as to cover the periphery of the inlet 41g. The inlet straightening vane 41e is separated from the edge of the plate member 41b corresponding to the inlet 41g. That is, the plate member 41a is larger than the plate member 41b by at least the gap between the inlet flow straightening plate 41e and the edge of the plate member 41b in plan view. Of the three plate members constituting the inlet flow straightening plate 41e, the plate member positioned closest to the space S also functions as the mounting portion 41d. The attachment portion 41 d is a member for fixing the first heat shielding cover 41 to the casting device 50. Specifically, the attachment portion 41 d is a member for attaching the pair of plate members 41 a and 41 b above the lower end 1 a of the upper mold 1 and below the upper part. The attachment portion 41 d is attached to the side surface of the upper die base 3 by a connecting member 41 t such as a bolt.

  The outlet straightening vane 41f is provided at the outlet 41h and rectifies the flow of air flowing out from the outlet 41h. The outlet straightening vane 41f is formed integrally with the plate member 41a, and is constituted by a plate member extending upward from the edge of the plate member 41a corresponding to the outlet 41h and toward the outside of the casting apparatus 50. There is.

  As shown in FIGS. 2, 4 and 5 (b), the second heat shield cover 42 is attached to the lower surface of the upper frame 5. The second heat shield cover 42 is disposed above the first heat shield cover 41 and below the upper component. The second heat shield cover 42 is arranged side by side with the first heat shield cover 41 in the Y direction when viewed from the up and down direction. The second heat shield cover 42 is spaced apart from the space S (see FIG. 1) in the Y direction more than the first heat shield cover 41 as viewed in the vertical direction. The second heat shield cover 42 is used in combination with the first heat shield cover 41 to further control the flow of air controlled by the first heat shield cover. The second heat shield cover 42 includes a pair of plate members 42a and 42b (a pair of second plate members), a flow path 42c (a second flow path), an attachment portion 42d (a second attachment portion), and an inlet flow straightening plate And 42e (first rectifying plate). The pair of plate members 42a and 42b are connected to each other by a connecting member 42s such as a bolt, for example, and are opposed to each other in the vertical direction. Here, the plate member 42a is disposed upward, and the plate member 42b is disposed downward. The pair of plate members 42a and 42b have a rectangular shape in plan view.

  The flow path 42c is a gap formed between the pair of plate members 42a and 42b. The flow path 42c has a rectangular shape when viewed from the upper and lower direction. The flow path 42c has an inlet 42g (second inlet) into which the air flowing out from the outlet 41h flows in, and an outlet 42h in which the air flowing into the inlet 42g flows out in a direction (specifically, the horizontal direction) intersecting with the vertical direction. And the second outlet). Three sides of the flow path 42c having a rectangular shape when viewed from the up and down direction correspond to the inlet 42g, and the other side corresponds to the outlet 42h. The inlet 42g is disposed below the upper part. The outlet 42 h is spaced from the space S (see FIG. 1) in the Y direction more than the inlet 42 g. The outlet 42 h is spaced from the space S in the Y direction more than the upper frame 5 and the upper component. That is, the outlet 42 h does not overlap with the upper frame 5 and the upper part as viewed in the vertical direction. For this reason, the air flowing out of the outlet 42 h hardly affects the upper parts.

  The inlet straightening vane 42e is provided at the inlet 42g and guides the heated air from the outlet 41h of the first heat shielding cover 41 disposed below to the inlet 42g. The inlet straightening vane 42e is integrally formed with the plate member 42a. The inlet straightening vane 42e is constituted by three plate members extending downward from the edge of the plate member 42a corresponding to the inlet 42g so as to cover the inlet 42g. The inlet straightening vane 42e is separated from the edge of the plate member 42b corresponding to the inlet 42g. That is, the plate member 42a is larger than the plate member 42b by at least the gap between the inlet flow straightening plate 42e and the edge of the plate member 42b in plan view. Among the three plate members constituting the inlet flow straightening plate 42e, the plate member located closest to the space S (see FIG. 1) extends below the other plate members so as to be connected to the outlet flow straightening plate 41f. ing.

  The attachment portion 42 d is a part of the plate member 42 a and faces the lower surface of the upper frame 5. The attachment portion 42 d is a member for fixing the second heat shielding cover 42 to the casting device 50. Specifically, the attachment portion 42d is a member for attaching the pair of plate members 42a and 42b above the pair of plate members 41a and 41b and below the upper part. The attachment portion 42 d is attached to the lower surface of the upper frame 5 by a connecting member 42 t such as a bolt via a heat-resistant insulating member 46 made of, for example, iron or ceramic.

  As shown in FIGS. 2 and 6, the third heat shield cover 43 is attached to the upper die base 3 on the opposite side of the first heat shield cover 41. The third heat shield cover 43 is attached to the edge of the upper surface of the upper die base 3. The third heat shield cover 43 includes a pair of plate members 43a and 43b, a flow path 43c, an attachment portion 43d, and an outlet current plate 43f (second current plate). The pair of plate members 43a and 43b are connected to each other by a connecting member 43s such as a bolt, for example, and are opposed to each other. Here, the plate member 43a is disposed upward, and the plate member 43b is disposed downward. The pair of plate members 43a and 43b has a rectangular shape in plan view. The pair of plate members 43a and 43b are inclined with respect to the vertical direction and the horizontal direction.

  The flow path 43c is a gap formed between the pair of plate members 43a and 43b. The flow path 43c has a rectangular shape when viewed from the opposing direction of the pair of plate members 43a and 43b. The flow path 43c has an inlet 43g into which the air heated in the space S (see FIG. 1) flows, and a direction in which the air flowing into the inlet 43g intersects the vertical direction (specifically, the upper side and the casting device 50 And an outlet 43h flowing out in a direction toward the outside). Three sides of the flow path 43c having a rectangular shape when viewed from the opposing direction of the pair of plate members 43a and 43b correspond to the inlet 43g, and the other side corresponds to the outlet 43h. At least a portion of the inlet 43g is disposed below the upper part. The outlet 43 h is farther from the space S in the Y direction and the Z direction than the inlet 43 g. The outlet 43 h is disposed further to the outside of the casting apparatus 50 than the upper frame 5 and the upper component, and is spaced apart from the space S in the Y direction from the upper frame 5 and the upper component. That is, the outlet 43 h does not overlap with the upper frame 5 and the upper part as viewed in the vertical direction. For this reason, the air flowing out of the outlet 43 h hardly affects the upper parts.

  The mounting portion 43d is formed of a plate member extending in the horizontal direction from the edge located closest to the space S (see FIG. 1) among the edges of the plate member 43a corresponding to the inlet 43g. The attachment portion 43 d is a member for fixing the third heat shielding cover 43 to the casting device 50. Specifically, the mounting portion 43 d is a member for mounting the pair of plate members 43 a and 43 b above the lower end 1 a of the upper mold 1. The attachment portion 43 d is attached to the edge portion of the upper surface of the upper die base 3 by a connecting member 43 t such as a bolt.

  The outlet straightening vane 43f is provided at the outlet 43h and rectifies the flow of air flowing out from the outlet 43h. The outlet straightening plate 43f is integrally formed with the plate member 43a, and extends in the opposite direction of the pair of plate members 43a and 43b so as to cover the periphery of the outlet 43h from the edge of the plate member 43a corresponding to the outlet 43h. It is comprised by the board member to carry out. The outlet straightening vane 43f is separated from the edge of the plate member 43b corresponding to the outlet 43h. That is, the plate member 43a is larger than the plate member 43b by at least the gap between the outlet flow straightening plate 43f and the edge of the plate member 43b in plan view. The length of the outlet flow straightening plate 43f in the opposing direction of the pair of plate members 43a and 43b is equal to the distance between the pair of plate members 43a and 43b.

  Then, with reference to FIGS. 7-14, the example of the casting method by the casting apparatus 50 is demonstrated. FIG. 7 is a flowchart showing a casting method by the casting apparatus of FIG. FIG. 8 is a view on arrow A-A in FIG. 1 and is a view for explaining a device activation state. FIG. 9 shows a second separated state in which the upper and lower molds slide by the operation of the parallel link mechanism, and is a view for explaining the initial state of the manufacturing process. FIG. 10 is a view for explaining a mold closed state in which the upper mold and the lower mold are closed. FIG. 11 is a view obtained by rotating the mold-closed upper and lower molds by 90 °. FIG. 12 is a diagram in which the upper mold is pulled up to an intermediate position. FIG. 13 is a view in which the upper mold and the lower mold are slid into a first separated state. FIG. 14 is a diagram in which the upper mold is pulled up to the rising end from the state of FIG. 13. In FIGS. 8 to 14, the first heat shield cover 41, the second heat shield cover 42, and the third heat shield cover 43 (see FIG. 2) are not shown.

  As shown in FIGS. 7 and 8, in the casting apparatus 50, when the power is turned on, the upper mold 1 is at the rising end, and the pair of main link members 7 and the pair of sub link members 8 are casting devices. It is perpendicular to the 50 installation surfaces (apparatus activation state: step S11). The above-described preheating process is performed in this state. In addition, the casting apparatus 50 is arrange | positioned between a work space (not shown) and a hot-water supply apparatus (not shown). The casting apparatus 50 is disposed such that the ladle 25 faces the work space (not shown) in the Y direction. The work space is a space for workers to perform tasks such as core packing. The water heater is a device for supplying the molten metal to the ladle 25. Further, a conveyor (not shown), for example, is disposed between the casting apparatus 50 and the work space. The conveyor is a device for transporting a casting (cast product) cast by the casting device 50. The conveyor extends, for example, to a post-processing device (e.g., a product cooling device, a sanding device, a product finishing device, etc.).

  Subsequently, as shown in FIG. 7 and FIG. 9, the casting apparatus 50 is in an initial state of a series of casting processes (step S12). The casting apparatus 50 is changed from the state shown in FIG. 8 to the initial state shown in FIG. In step S12, the rotary actuator 16 is driven, and the tilting rotary shaft 10 of the first main link member 7a is rotated clockwise. In the present embodiment, the rotation in the clockwise direction is right rotation, and the opposite rotation is left rotation. Along with this, by the action of the parallel link mechanism, the upper mold 1 and the lower mold 2 draw an arc and slide in opposite directions. Specifically, when the upper mold 1 and the lower mold 2 opposed to each other perform a circular motion in the right rotation with the tilting rotational axis 10 as a central axis, the upper mold 1 and the lower mold 2 are in the horizontal direction. To move away from. At this time, the upper mold 1 is moved to the water heating apparatus side (second separated state). This second separated state is the initial state of a series of casting processes. In the present embodiment, the state in which the lower mold 2 has moved to the water heating apparatus side is referred to as a first separation state, and the state in which the upper mold 1 has moved to the water heating apparatus side is referred to as a second separation state. That is, in the first separated state (see FIG. 13), the upper mold 1 is moved by the rotary actuator 16 in the direction of moving away from the water heater, and the lower mold 2 is moved in the direction of approaching the water heater. And the lower mold 2 is in a state of being separated horizontally. In the second separated state (see FIG. 9), the upper mold 1 moves in the direction approaching the hot water supply device by the rotary actuator 16 and the lower mold 2 moves in the direction away from the hot water supply system. The mold 2 is in the state of being separated in the horizontal direction.

  Next, the core 34 (see FIG. 3) is put into a predetermined position of the lower mold 2 (step S13). For example, a worker carries out the core storage for storing the core 34. The core 34 is molded by, for example, a core molding machine (not shown). In the second separated state, the lower mold 2 is open at the top, and the ladle 25 attached to the lower mold 2 is not in contact with the upper mold 1. Thus, since the upper part of the lower mold 2 is opened, the core 34 can be safely stored in the lower mold 2.

  Subsequently, the casting apparatus 50 drives the rotary actuator 16 to rotate the tilting rotary shaft 10 of the first main link member 7a leftward to once return to the apparatus activation state of FIG. 8 (step S14). Subsequently, as shown in FIGS. 7 and 10, the casting apparatus 50 extends the first hydraulic actuator 22 to close the upper mold 1 and the lower mold 2 (step S15). At this time, the positioning key 35 of the upper mold 1 and the key groove 36 of the lower mold 2 are fitted, and the upper mold 1 and the lower mold 2 are horizontally fixed. Further, due to mold closing, the pair of main link members 7 and the pair of sub link members 8, the main link upper rotation shaft 11, the main link lower rotation shaft 12, the sub link upper rotation shaft 13, and the sub link lower rotation shaft 14 The upper mold 1, the lower mold 2, the upper frame 5, the lower frame 6, the pair of main link members 7, and the pair of sub link members 8 are integrated.

  Next, when the upper mold 1 and the lower mold 2 are in the mold closing state in which the upper mold 1 and the lower mold 2 are closed, the hot water supply device supplies the molten metal to the ladle 25 (step S16). Subsequently, as shown in FIGS. 7 and 11, the casting apparatus 50 drives the rotary actuator 16 to rotate the tilting rotary shaft 10 of the first main link member 7 a leftward by approximately 90 degrees, and the upper mold 1 And lower mold 2 are tilted (step S17). Thereby, the sub link central portion rotation shaft 15 moves from the upper surface of the base frame 17. Along with this, the upper mold 1, the lower mold 2, the upper frame 5, the lower frame 6, the pair of main link members 7 and the pair of sub link members 8 which are integrally closed are rotated, The molten metal in the inside is tilted and poured into a cavity formed between the upper mold 1 and the lower mold 2 (step S18).

  After the process of step S18 is completed, the state of FIG. 11 is maintained for a predetermined time to wait for solidification (cooling) of the poured molten metal (step S19). Here, as described above, the rotary actuator 16 is driven to rotate the tilting rotary shaft 10 of the first main link member 7a to the left by approximately 90 °, but at a required angle within the range of 45 ° to 130 °. It may be rotated or may be rotated at a required angle within the range of 45 ° to 90 °.

  Subsequently, the casting apparatus 50 drives the rotary actuator 16 to rotate the tilting rotary shaft 10 of the first main link member 7a to the right, and temporarily returns to the state of FIG. 10 (step S20). Subsequently, the die removal from the lower die 2 and the die opening are performed in parallel (step S21). As shown in FIGS. 7 and 12, the mold opening is performed, and at the same time, the mold removal from the lower mold 2 is also performed. The mold opening is started by the casting device 50 operating the first hydraulic actuator 22. Then, simultaneously with the shortening operation of the first hydraulic actuator 22, the extension operation of the second hydraulic actuator 30 is started. By the extension of the second hydraulic actuator 30, the push pin 26 (see FIG. 3) built in the lower mold 2 is pushed out. As a result, a casting (not shown) formed by solidification of the molten metal in the upper mold 1 and the lower mold 2 is removed from the lower mold 2 and held in the upper mold 1. Then, the casting apparatus 50 raises the upper mold 1 to a predetermined position to complete the mold opening. The predetermined position is a position at which the tip of the push rod 29 and the upper surface of the push plate 28 of the upper mold 1 do not contact with each other. In other words, the predetermined position is a position where there is a gap between the tip of the push rod 29 and the upper surface of the pushing plate 28 of the upper mold 1.

  Next, as shown in FIGS. 7 and 13, the casting apparatus 50 drives the rotary actuator 16 to rotate the tilting rotary shaft 10 of the first main link member 7a to the left (step S22). By the action of the parallel link mechanism, the casting apparatus 50 slides the upper mold 1 and the lower mold 2 in an arc and separates them horizontally. At this time, the upper mold 1 is moved to the conveyor side, that is, the lower mold 2 is moved in the direction approaching the water heater, and the first separated state is obtained. The angle of the left rotation of the rotary actuator 16 at this time is about 30 ° to 45 ° in which the lower side of the upper mold 1 is open.

  Next, as shown in FIGS. 7 and 14, the casting device 50 raises the upper mold 1 to the rising end by shortening the first hydraulic actuator 22. As a result, the push pin 26 (see FIG. 3) is pushed relative to the upper mold 1 through the pushing plate 28 in which the tip of the push rod 29 is incorporated in the upper mold 1. As a result, the casting held in the upper mold 1 is removed from the upper mold 1 (step S23). The castings removed from the upper mold 1 fall and are received on a conveyor provided below the upper mold 1. That is, the conveyor also functions as a receiving unit for receiving castings. Thereafter, the casting is conveyed by a conveyor to, for example, a product cooling device, a sanding device, and a product finishing device that performs deburring.

  Subsequently, as shown in FIG. 7, the casting apparatus 50 drives the rotary actuator 16 to rotate the tilting rotary shaft 10 of the first main link member 7a to the right (step S24). Thus, the casting apparatus 50 returns to the initial state (see FIG. 9). As described above, a series of casting processes are completed, and the casting apparatus 50 casts a casting. Moreover, when performing a casting process continuously, a casting can be continuously cast by repeating a process from the core setting process of step S13.

Second Embodiment
FIG. 15 is a front view of a casting apparatus according to a second embodiment. Figure 16 is a side view of the casting apparatus of Figure 15; As shown in FIGS. 15 and 16, the casting apparatus 50A according to the second embodiment mainly includes an opening / closing mechanism 21 for raising and lowering the lower mold 2 provided on the lower frame 6, and a second hydraulic actuator 30. In the first embodiment, the first heat shield cover 41A is provided in place of the first heat shield cover 41 and the second heat shield cover 42 (see FIG. 2). It differs from the casting apparatus 50 which concerns. By providing the open / close mechanism 21 on the lower frame 6, the lower die 2 can be moved up and down in the casting apparatus 50A. The lower die base 4 moves up and down together with the lower die 2. Hereinafter, differences between the casting apparatus 50A according to the second embodiment and the casting apparatus 50 according to the first embodiment will be mainly described, and the common description will be omitted.

  FIG. 17 is a view showing a cross section of the upper mold and the lower mold in FIG. As shown in FIG. 17, in the casting device 50A, the second hydraulic actuator 30 is provided on the upper frame 5 and the pushing mechanism 37 is provided on the lower frame 6. The casting apparatus 50A includes a second hydraulic actuator 30 as an upper part, instead of the opening and closing mechanism 21. Specifically, when the second hydraulic actuator 30 is a hydraulic cylinder, a proximity sensor (not shown) for detecting the position of the end of the hydraulic cylinder, piping (not shown) of the hydraulic cylinder, etc. may be mentioned as the upper part . The proximity sensor and piping of the hydraulic cylinder are disposed, for example, on the upper frame 5.

In the casting apparatus 50A, the extrusion plate 28 is disposed in an internal space formed inside the lower end side of the lower mold 2. Each push pin 26 is provided on the upper surface of the push plate 28. Each extrusion pin 26 raises and lowers a hole passing from an inner space of the lower mold 2 to a cavity for forming a casting. Each extrusion pin 26 extrudes the casting in the cavity at its tip. Each return pin 27 is provided at a position different from the push pin 26 on the upper surface of the push plate 28. Each return pin 27 raises and lowers a hole passing from the inner space of the lower mold 2 to the upper surface of the lower mold 2. Each return pin 27 has its tip end abutted against the lower surface of the upper mold 1 in the process of closing the upper mold 1 and the lower mold 2 so that the extrusion plate 28 is lowered.

  Each push rod 29 is provided on the upper surface of the lower frame 6. Each push rod 29 is disposed on the upper surface of the lower frame 6 through the lower die base 4. Each push rod 29 is inserted into a hole penetrating from the lower surface of the lower mold 2 to the inner space, and the tip thereof is disposed below the extrusion plate 28 in the inner space. The length of each push rod 29 is set to a length that pushes up the pushing plate 28 when the first hydraulic actuator 22 is shortened and the lower die 2 is at the lowering end. That is, each push rod 29 is inserted into the inner space by a predetermined length from the lower surface of the lower mold 2 through the hole penetrating to the inner space formed at the lower position of the lower mold 2 and the extrusion plate 28 Block the descent of

  The first heat shield cover 41A is different from the first heat shield cover 41 (see FIG. 2) in terms of the length in the Y direction. The length of the first heat shield cover 41A in the Y direction is equal to the sum of the length of the first heat shield cover 41 in the Y direction and the length of the second heat shield cover 42 (see FIG. 2) in the Y direction. . The outlet 41 h is disposed further to the outside of the casting apparatus 50 than the upper frame 5 and the upper component, and is spaced apart from the space S in the Y direction from the upper frame 5 and the upper component. That is, the outlet 41 h does not overlap with the upper frame 5 and the upper part as viewed in the vertical direction. For this reason, the air flowing out of the outlet 41 h hardly affects the upper parts. In order to suppress the transfer of heat from the first heat shielding cover 41A to the upper frame 5, for example, a heat-resistant heat insulating member (not shown) is provided between the first heat shielding cover 41A and the lower surface of the upper frame 5. It is arranged.

  In the casting method by the casting apparatus 50A, the mold removal from the upper mold 1 and the mold opening are performed in parallel in the above step S21. Specifically, the casting apparatus 50A lowers the lower mold 2 by the opening / closing mechanism 21 provided in the lower frame 6, and starts the mold opening between the upper mold 1 and the lower mold 2. At the same time, the extension operation of the second hydraulic actuator 30 provided on the upper frame 5 is started. By the extension of the second hydraulic actuator 30, the push pin 26 incorporated in the upper mold 1 is pushed out. As a result, a casting (not shown) formed by solidification of the molten metal in the upper mold 1 and the lower mold 2 is removed from the upper mold 1 and held in the lower mold 2. Further, in the above-mentioned step S23, die-cut from the lower mold 2 is performed. Specifically, the lower mold 2 is lowered to the lowering end by the open / close mechanism 21. As a result, the push pin 26 is pushed relative to the lower mold 2 through the pushing plate 28 in which the tip of the push rod 29 is incorporated in the lower mold 2. As a result, the casting held in the lower mold 2 is removed from the lower mold 2.

  As described above, in the first heat shielding cover 41 of the casting apparatus 50 and the first heat shielding cover 41A of the casting apparatus 50A, the pair of plate members 41a and 41b are attached to the lower end 1a of the upper mold 1 by the mounting portion 41d. It is attached above. Similarly, in the third heat shielding cover 43 of the casting apparatus 50, 50A, the pair of plate members 43a, 43b is attached above the lower end 1a of the upper mold 1 by the attachment portion 43d. For this reason, the air heated by the preheating treatment generates a rising air flow in the space S between the upper mold 1 and the lower mold 2 in the mold-opened state, and the pair of plate members 41a and 41b and the pair of plates The members 43a, 43b are reached.

  Since the flow path 41c which is a gap is formed between the pair of plate members 41a and 41b, the heated air flows into the inlet 41g of the flow path 41c and is accelerated in the flow path 41c ( Nifty effect) flows out from the outlet 41h of the flow path 41c in the horizontal direction (outside of the casting apparatus 50). Similarly, since a flow path 43c comprising a gap is formed between the pair of plate members 43a and 43b, the heated air flows into the inlet 43g of the flow path 43c and is accelerated in the flow path 43c. , And flows out upward from the outlet 43h of the flow path 43c and toward the outside of the casting apparatus 50. As described above, the first heat shielding cover 41, 41A and the third heat shielding cover 43 control the flow H of the heated air by the flow path 41c and the flow path 43c, and the air in the direction intersecting the vertical direction. Since it can be made to flow out, it can control that the air concerned goes upwards. Thereby, casting device 50, 50A can control temperature rise of upper parts accompanying preheating processing of upper mold 1 and lower mold 2. As described above, in the casting devices 50 and 50A, since the flow H of the heated air can be controlled without using a blower, the noise reduction can be enhanced.

  The casting apparatus 50 further includes a second heat shielding cover 42. The second heat shield cover 42 includes a pair of plate members 42a and 42b, and a flow path 42c is formed between the pair of plate members 42a and 42b. The air flowing out of the outlet 41h of the flow passage 41c of the first heat shield cover 41 flows into the inlet 42g of the flow passage 42c, is accelerated in the flow passage 42c, and intersects the vertical direction from the outlet 42h of the flow passage 42c. Flow out in the direction. As described above, the casting apparatus 50 further controls the flow H of the heated air by the flow path 41c by the combination of the first heat shielding cover 41 and the second heat shielding cover 42, and further controls the flow H by the flow path 42c. be able to.

  In the casting apparatus 50, since the first heat shielding cover 41 is used in combination with the second heat shielding cover 42, the length in the Y direction should be shorter than the first heat shielding cover 41A used in the casting apparatus 50A. Can. Therefore, in the casting apparatus 50, the movement of the water heater for supplying the molten metal to the ladle 25 is unlikely to be inhibited by the first heat shielding cover 41.

  In the casting apparatus 50, the opening / closing mechanism 21 performs mold closing and mold opening of the upper mold 1 and the lower mold 2 by moving the upper mold 1 up and down, and the first heat shielding cover 41 together with the upper mold 1 It is attached to the upper die base 3 which moves up and down. The second heat shield cover 42 is attached to the upper frame 5. Therefore, the casting apparatus 50 can operate the first heat shield cover 41 and the second heat shield cover 42 separately.

  The first heat shielding cover 41 of the casting device 50 and the first heat shielding cover 41A of the casting device 50A are provided with an inlet flow straightening plate 41e. Furthermore, in the casting apparatus 50, the second heat shield cover 42 includes the inlet flow straightening plate 42e. Thus, the casting apparatus 50, 50A can further control the flow H of the heated air.

  In the casting devices 50 and 50A, the first heat shielding cover 41 includes an outlet flow straightening plate 41f. Similarly, the third heat shielding cover 43 is provided with an outlet flow control plate 43f. Thus, the casting apparatus 50, 50A can further control the flow H of the heated air.

  The casting apparatus 50 operates by a parallel link mechanism. In such a casting apparatus 50 as well, the first heat shielding cover 41, the second heat shielding cover 42, and the third heat shielding cover 43 raise the upper parts involved in the preheating process of the upper mold 1 and the lower mold 2. The temperature is suppressed. Similarly, the casting apparatus 50A operates with a parallel link mechanism. Also in such a casting apparatus 50A, the first heat shielding cover 41A and the third heat shielding cover 43 suppress the temperature rise of the upper part accompanying the preheating processing of the upper mold 1 and the lower mold 2.

  As mentioned above, although each embodiment was described, this indication is not limited to each above-mentioned embodiment. For example, the inlet straightening vane 41e and the outlet straightening vane 41f may be formed integrally with the plate member 41b without being limited to the plate member 41a. The inlet straightening vane 42e is not limited to the plate member 42a, and may be integrally formed with the plate member 42b. The outlet flow straightening plate 43f may be formed integrally with the plate member 43b as well as the plate member 43a. The second heat shield cover 42 may further include an outlet current plate. The third heat shield cover 43 may further include an inlet current plate.

  Instead of removing the casting from the upper mold 1 or the lower mold 2 by the second hydraulic actuator 30, the extrusion plate 28 may be pushed out with a spring. In that case, when the upper mold 1 and the lower mold 2 are closed, the return pin 27 of the lower mold 2 is pushed down by the upper mold 1 to lower the extrusion pin 26, and the mold closing force pushes the return pin 27 down. Although the force is offset, the number of actuators can be reduced.

  Also, a plurality of casting devices 50, 50A may be arranged. At this time, the arrangement of the casting devices 50 and 50A is not limited as long as the hot water supply device can supply water. Also, core loading may be performed by a core loading robot provided with an articulated arm, for example, instead of workers. In addition, the opening and closing mechanism 21 may raise and lower both the upper mold 1 and the lower mold 2.

DESCRIPTION OF SYMBOLS 1 ... upper mold, 2 ... lower mold, 5 ... upper frame, 6 ... lower frame, 7 ... main link member, 7 a ... 1st main link member, 7 b ... 2nd main link member, 10 ... tilting rotation axis ( Rotational axis), 15 ... Secondary link central part rotational axis (rotational axis), 16 ... Rotational actuator (drive part), 21 ... Opening and closing mechanism, 41, 41A ... First heat shielding cover, 41a, 41b ... Plate member (first) Plate member) 41c: flow passage (first flow passage) 41d attachment portion (first attachment portion) 41e: inlet flow straightening plate (first flow straightening plate) 41f: outlet flow straightening plate (second flow straightening plate) 41 g: inlet (first inlet) 41 h: outlet (first outlet) 42: second heat shielding cover 42 a, 42 b: plate member (second plate member) 42 c: flow passage (second flow passage) 42d ... mounting portion (second mounting portion), 42e ... inlet straightening vane (first straightening vane), 42g ... inlet (second inlet), 4 h: outlet (second outlet), 43: third heat shielding cover, 43a, 43b, plate member, 43c, flow passage, 43d, mounting portion, 43f: outlet straightening plate (second rectifying plate), 43g, inlet 43 h ... outlet, 50, 50 A ... casting apparatus, S ... space.

Claims (7)

An upper mold and a lower mold, an opening / closing mechanism that performs mold closing and mold opening of the upper mold and the lower mold by moving up and down any one of the upper mold and the lower mold; A thermal shielding cover for use in a casting apparatus comprising: an upper part disposed above a mold, wherein the heat shielding is performed on heat to the upper part in the preheating treatment of the upper mold and the lower mold;
A pair of plate members disposed opposite to each other,
A flow path formed between the pair of plate members;
And a mounting portion for mounting the pair of plate members above the lower end of the upper mold;
The flow path is
An inlet through which heated air flows in a space between the upper mold and the lower mold in a mold-opened state;
And an outlet from which the air flowing into the inlet flows out in a direction perpendicular to the vertical direction.   The thermal barrier cover according to claim 1, further comprising a first straightening vane provided at the inlet for guiding heated air to the inlet.   The heat shield cover according to claim 1, further comprising: a second straightening vane provided at the outlet, which rectifies a flow of air flowing out from the outlet. Upper mold and lower mold,
An opening / closing mechanism that performs mold closing and mold opening of the upper mold and the lower mold by moving up and down any one of the upper mold and the lower mold;
An upper part disposed above the upper mold;
And a first heat shielding cover that shields heat from the upper part in the preheating process of the upper mold and the lower mold.
The first heat shielding cover is
A pair of first plate members disposed opposite to each other;
A first flow path formed between the pair of first plate members;
And a first mounting portion for mounting the pair of first plate members above the lower end of the upper mold;
The first flow path is
A first inlet through which heated air flows in a space between the upper mold and the lower mold in a mold-opened state;
And a first outlet from which air flowing into the first inlet flows out in a direction intersecting the vertical direction. It further comprises a second heat shielding cover which shields heat to the upper part in the preheating processing of the upper mold and the lower mold
The second heat shielding cover is
A pair of second plate members disposed opposite to each other;
A second flow path formed between the pair of second plate members;
A second attachment portion for attaching the pair of second plate members above the pair of first plate members;
The second flow path is
A second inlet through which the air flowing out of the first outlet flows;
The casting apparatus according to claim 4, further comprising: a second outlet from which air flowing into the second inlet flows out in a direction intersecting the vertical direction. The opening and closing mechanism performs mold closing and mold opening of the upper mold and the lower mold by raising and lowering the upper mold.
The casting apparatus according to claim 5, wherein the first heat shielding cover is attached to the upper die base which is moved up and down together with the upper mold by the first attaching portion. An upper frame on which the upper mold is mounted;
A lower frame on which the lower mold is mounted;
A main link member having an upper end portion pivotally connected to the upper frame, a lower end portion pivotally connected to the lower frame, and a rotation shaft at a central portion thereof;
The sub link is disposed parallel to the main link member, the upper end portion thereof is rotatably connected to the upper frame, the lower end portion is rotatably connected to the lower frame, and a rotation shaft is provided at a central portion thereof Link member,
And a drive unit connected to the rotation axis of the main link member, for rotating the main link member around the rotation axis.
The casting apparatus according to any one of claims 4 to 6, wherein the upper frame, the lower frame, the main link member and the sub link member constitute a parallel link mechanism.

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