Mold core placing device

Abstract

The present invention relates to a core setting device for setting a core on a lower mold disposed so as to face an upper mold in the vertical direction, the core setting device comprising: a holding jig having a holding surface for holding the core; a rotation mechanism having a rotation shaft parallel to a first direction orthogonal to the vertical direction and configured to rotationally drive the holding jig; and a first movement mechanism that moves the holding jig in the first direction outside the space between the upper mold and the lower mold. The holding jig moves between the outside of the space and a core placement position at which the holding surface and the upper surface of the lower mold face each other in the vertical direction by rotating about the rotating shaft as the axis.

Description

Technical Field

[0001] The present disclosure relates to a core placement device. Background Art

[0002] Patent Document 1 discloses a core placement device for placing a core in a mold. The core placement device includes a rotating shaft and a core holding mechanism provided on the rotating shaft.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2012-179643 Summary of the Invention

[0004] An object of the present disclosure is to provide a core placement device that can improve the workability of an operator and contribute to shortening the cycle time.

[0005] The core placement device of the present disclosure places a core in a lower mold that is disposed opposite an upper mold in the vertical direction. The core placement device includes: a holding jig having a holding surface for holding the core; a rotating mechanism having a rotating shaft parallel to a first direction orthogonal to the vertical direction and configured to rotationally drive the holding jig; and a first moving mechanism configured to move the holding jig along the first direction outside a space between the upper mold and the lower mold. The holding jig moves between outside the space and a core placement position by rotating about the rotating shaft, and the core placement position is a position where the holding surface faces the upper surface of the lower mold in the vertical direction.

[0006] According to the present disclosure, there is provided a core placement device that can improve the workability of an operator and contribute to shortening the cycle time. Brief Description of the Drawings

[0007] Figure 1 is a perspective view showing an initial state of a molding system including the core placement device according to the embodiment.

[0008] Figure 2 is a perspective view for explaining the operation of the molding system.

[0009] Figure 3 is showing Figure 2 a top view of the molding system in the state of.

[0010] Figure 4 is a perspective view for explaining the operation of the molding system.

[0011] Figure 5 is showing Figure 4 a top view of the molding system in the state of.

[0012] Figure 6 is a top view for explaining the operation of the molding system.

[0013] Figure 7It is a top view for explaining the operations of the molding system.

[0014] Figure 8 It represents Figure 7 a side view of the molding system showing the state of

[0015] Figure 9 It is a side view for explaining the operations of the molding system.

[0016] Figure 10 It is a side view for explaining the operations of the molding system.

[0017] Figure 11 It is a side view for explaining the operations of the molding system.

[0018] Figure 12 It is a side view for explaining the operations of the molding system. Detailed Implementation Modes

[0019] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are assigned to the same elements, and repeated descriptions are omitted. The dimensional ratios in the drawings are not necessarily consistent with the descriptions. The terms "upper", "lower", "front", and "rear" are for convenience based on the illustrated states.

[0020] [Molding System]

[0021] Figure 1 It is a perspective view showing the initial state of the molding system including the core placement device according to the embodiment. In the figure, the X direction (second direction) and the Y direction (first direction) are horizontal directions, and the Z direction is the vertical direction. The X direction, the Y direction, and the Z direction are mutually orthogonal axes in a three-dimensional orthogonal coordinate system. Hereinafter, the X direction will also be referred to as the front-rear direction, the Y direction will also be referred to as the lateral direction, and the Z direction will also be referred to as the up-down direction. Figure 1 The illustrated molding system 100 is composed of an upper mold (not shown) and a lower mold M, and molds a mold in which a core is disposed inside. The molding system 100 includes a molding machine 1 and a core placement device 10.

[0022] The molding machine 1 includes an upper mold box 2, a lower mold box 3, and a pair of mold box guiding members 4. In Figure 1 the initial state of the illustrated molding system 100, the molded upper mold and the lower mold M are disposed in the upper mold box 2 and the lower mold box 3. The upper mold box 2 and the lower mold box 3 are disposed opposite to each other in the up-down direction. The upper mold and the lower mold M are disposed opposite to each other in the Z direction in the state of being disposed in the upper mold box 2 and the lower mold box 3.

[0023] The upper mold box 2 is a box-shaped frame with openings at both the upper and lower ends, and has a space inside it that can accommodate a mold configured on the upper surface of a pattern member (not shown). The pattern member is a plate member on which the mold can be configured. The mold is configured on at least one of the upper and lower surfaces of the pattern member. The lower end of the upper mold box 2 can, for example, abut against the upper surface of the pattern member. A sand inlet that penetrates from the outside to the inside space is provided on the side wall of the upper mold box 2. The lower mold box 3 is a box-shaped frame with openings at both the upper and lower ends, and has a space inside it that can accommodate a mold configured on the lower surface of the pattern member. The upper end of the lower mold box 3 can, for example, abut against the lower surface of the pattern member. A sand inlet that penetrates from the outside to the inside space is provided on the side wall of the lower mold box 3.

[0024] The mold box guiding member 4 is a rod member that guides the upper mold box 2 and the lower mold box 3 and extends in the vertical direction. The mold box guiding member 4 is, for example, cylindrical. The upper mold box 2 and the lower mold box 3 are movably connected to the mold box guiding member 4. A working cylinder 6 that drives the upper mold box 2 in the vertical direction is connected to the upper mold box 2. A working cylinder 7 that drives the lower mold box 3 in the vertical direction is connected to the lower mold box 3. The working cylinder 6 and the working cylinder 7 are, for example, hydraulic cylinders, pneumatic cylinders, or electric cylinders. The upper mold box 2 and the lower mold box 3 approach or move away from each other by moving at least one of the upper mold box 2 and the lower mold box 3.

[0025] The upper mold box 2 and the lower mold box 3 approach each other by moving one or both of them, clamp the pattern member, and are connected. Sand is filled into the molding space of the upper mold box 2 and the lower mold box 3 after the mold boxes are closed. The sand filled inside the upper mold box 2 and the lower mold box 3 is pressed toward the pattern member by an upper pressing plate (not shown) and a lower pressing plate (not shown). Thus, an upper mold and a lower mold M are molded. After the upper mold and the lower mold M are molded, the upper mold box 2 and the lower mold box 3 are separated in the vertical direction, and the pattern member is removed, whereby the molding system 100 returns to the initial state.

[0026] [Core placement device]

[0027] The core placement device 10 is a device that places a core (not shown) on the lower mold M disposed opposite to the upper mold. The core placement device 10 includes a holding jig 11, a support arm 12, a rotation mechanism 13, a forward and backward movement mechanism (second movement mechanism) 14, and a lateral movement mechanism (first movement mechanism) 15. The holding jig 11 has a holding surface 11a for holding the core. The holding jig 11 has a substantially rectangular parallelepiped shape with the holding surface 11a as one of its faces. The holding surface 11a is rectangular. The thickness of the holding jig 11 (the length of the holding jig 11 in the direction orthogonal to the holding surface 11a) is shorter than the long side and the short side of the holding surface 11a. The holding jig 11, for example, has an attracting mechanism, and attracts and holds the core by the attracting mechanism. The holding jig 11 may also have claw portions to hold the core by the claw portions.

[0028] The support arm 12 is a component of the support holding jig 11. The support arm 12 supports the holding jig 11 in a cantilever manner. The support arm 12 includes a first portion 12a connected to the holding jig 11 and a second portion 12b connected to the rotation shaft 13a of the rotation mechanism 13. The first portion 12a is provided to protrude from the side surface 11b of the holding jig 11. The side surface 11b is a surface adjacent to one short side of the holding surface 11a. The first portion 12a is connected to one end portion of the holding surface 11a of the side surface 11b in the short side direction of the holding surface 11a and extends in a direction (Y direction) parallel to the rotation shaft 13a. The second portion 12b extends in a direction orthogonal to the rotation shaft 13a and connects the first portion 12a and the rotation shaft 13a.

[0029] The rotation mechanism 13 has a rotation shaft 13a parallel to the Y direction and a drive portion 13b. The drive portion 13b is a motor and rotationally drives the holding jig 11 about the rotation shaft 13a.

[0030] The forward and backward movement mechanism 14 moves the rotation mechanism 13 together with the holding jig 11 and the support arm 12 in the X direction. The forward and backward movement mechanism 14 has a guide rail member 14a and a working cylinder 14b. The guide rail member 14a extends in the X direction. The rotation mechanism 13 is movably mounted on the guide rail member 14a. The working cylinder 14b moves the rotation mechanism 13 in the X direction along the guide rail member 14a. The working cylinder 14b is, for example, an electric cylinder.

[0031] The lateral movement mechanism 15 moves the forward and backward movement mechanism 14 together with the holding jig 11, the support arm 12, and the rotation mechanism 13 in the Y direction. The lateral movement mechanism 15 has a guide rail member 15a, a drive portion 15b, and a link mechanism 15c. The guide rail member 15a extends in the Y direction. The rotation mechanism 13 is movably mounted on the guide rail member 15a. The drive portion 15b is a motor and moves the forward and backward movement mechanism 14 in the Y direction. Along with this, the holding jig 11 moves between the position P2 (refer to Figure 2 and Figure 3 ) and the position P3 (refer to Figure 4 and Figure 5 ). The link mechanism 15c is connected to the drive portion 15b and the forward and backward movement mechanism 14. The drive portion 15b moves the forward and backward movement mechanism 14 in the Y direction along the guide rail member 15a through the link mechanism 15c.

[0032] [Operation of the modeling system]

[0033] Refer to Figures 1 to 12 to describe the operation of the modeling system 100. In Figure 1In the initial state of the molding system 100 shown, the holding fixture 11 is arranged at a position P1 adjacent to the molding machine 1 in the X direction. At the position P1, the holding surface 11a is held in a state facing upward and parallel to the horizontal direction (X direction and Y direction). In the molding system 100, first, in the initial state, the operator performs a process of arranging the core on the holding surface 11a. The operator's working position is a position sandwiching the holding fixture 11 at the position P1 between the molding machine 1 in the X direction. The operator arranges the core on the holding surface 11a and operates the suction mechanism to hold the core with the holding fixture 11. The position P1 is set in the space in front of the molding machine 1 (upper mold and lower mold M) (hereinafter referred to as "front space"). Here, the front of the molding machine 1 refers to the front of the molding machine 1 seen from the operator, and is the surface of the molding machine 1 facing the operator in the X direction. In addition, the front space refers to the space adjacent to the front of the molding machine 1 in the X direction. The operator's working position is also set in the front space.

[0034] Next, the step of withdrawing the holding fixture 11 from between the molding machine 1 and the operator is performed. The step of withdrawing the holding fixture 11 includes: the step of rotating the holding fixture 11 90° in the clockwise direction (hereinafter referred to as the "positive direction") viewed from the negative side to the positive side of the Y direction, and the step of moving the holding fixture 11 in the -Y direction. In the step of rotating the holding fixture 11 90° in the positive direction, the holding fixture 11 rotates around the rotation axis 13a of the rotation mechanism 13 while holding the core, thereby moving from position P1 to position P2. Figure 2 and Figure 3 The position P2 shown. At the position P2, the holding surface 11a is arranged parallel to the Z direction and is opposite to the space S between the upper mold box 2 and the lower mold box 3 in the X direction. The position P2 is also set in the front space. Thus, the process of rotating the holding fixture 11 by 90° in the positive direction is performed in the front space.

[0035] In the process of moving the holding fixture 11 in the -Y direction, the holding fixture 11 is moved from the position P2 to the position P4 by the lateral moving mechanism 15. Figure 4 and Figure 5 The holding fixture 11 is moved to the position P3 shown. Thus, the holding fixture 11 is withdrawn from between the molding machine 1 and the operator. The position P3 is set in a space adjacent to the front space in the Y direction (hereinafter referred to as the "adjacent space"). That is, by moving the holding fixture 11 in the -Y direction, the holding fixture 11 is moved from the front space to the adjacent space. Next, the holding fixture 11 is moved in the X direction by the forward and backward moving mechanism 14, and the holding fixture 11 is moved from the position P3 to the adjacent space. Figure 6The position P4 shown. The position P4 is also set in the adjacent space. While the holding jig 11 retracts from between the operator and the molding machine 1 to the adjacent space, the operator visually inspects the upper mold and the lower mold M before placing the core. In the visual inspection, the presence or absence of foreign matter, nicks, etc. in the upper mold and the lower mold M is checked.

[0036] Next, a process of moving the holding jig 11 in the Y direction is performed. In the process of moving the holding jig 11 in the Y direction, the holding jig 11 moves from the position P4 to Figure 7 and Figure 8 the position P5 shown. At the position P5, the holding surface 11a faces the space S in the X direction. By moving the holding jig 11 from the position P3 to the position P4 in the previous process, the distance between the holding surface 11a and the space S is shorter at the position P5 than in the case of not moving. The position P5 is also set in the front space. That is, by the process of moving the holding jig 11 in the Y direction, the holding jig 11 moves from the adjacent space to the front space.

[0037] Next, a process of rotating the holding jig 11 90° in the positive direction is performed. In the process of rotating the holding jig 11 90° in the positive direction, the holding jig 11 rotates about the rotation axis 13a of the rotation mechanism 13 while holding the core to move from the position P5 to Figure 9 the position P6 (core placement position) shown. At the position P6, the holding jig 11 is disposed in the space S, and the holding surface 11a faces the upper surface Ma (product surface) of the lower mold M in the Z direction.

[0038] Next, a process of raising the lower mold box 3 together with the lower mold M toward the holding jig 11 by the working cylinder 7 is performed. Thereby, as Figure 10 shown, a state is achieved in which the upper surface Ma of the lower mold M is close to the holding surface 11a of the holding jig 11. In this state, the holding jig 11 releases the holding of the core by stopping the operation of the suction mechanism, and places the core on the lower mold M.

[0039] Next, a process of lowering the lower mold box 3 together with the lower mold M by the working cylinder 7 is performed. Thereby, as Figure 11 shown, a state is achieved in which the lower mold M and the holding jig 11 are separated in the Z direction.

[0040] Next, a process of rotating the holding jig 11 by 180° in the direction opposite to the positive direction, that is, the counterclockwise direction (hereinafter referred to as the "negative direction") when viewed from the negative side to the positive side of the Y direction, and a process of moving the holding jig 11 in the -X direction are performed in parallel. In the process of rotating the holding jig 11 by 180° in the negative direction, the holding jig 11 rotates about the rotation axis 13a of the rotation mechanism 13. The process of moving the holding jig 11 in the -X direction is performed by the forward and backward movement mechanism 14, and the holding jig 11 moves toward the operator. Thus, the holding jig 11 moves from the position P6 as Figure 12 shown to the position P1.

[0041] After the holding jig 11 moves outside the space S, the mold closing process is started. Here, the lower mold box 3 is raised toward the upper mold box 2 by the working cylinder 7 to perform mold closing. Next, the mold box is removed and the mold is pushed out, thereby manufacturing a mold.

[0042] [Summary of the Embodiment]

[0043] According to the core placement device 10, the holding jig 11 moves between the position P5 outside the space S and the position P6 where the holding surface 11a faces the upper surface Ma of the lower mold M in the Z direction by rotating 90° about the rotation axis 13a of the rotation mechanism 13. That is, the holding jig 11 moves between the front space and the space S only by rotational movement. Thus, compared with the case of the core placement device described in Patent Document 1 in which the core holding mechanism retracts between the lower mold and the upper mold and then rotates 180° in the facing direction when the core holding mechanism faces the retracted position and then enters the position between the lower mold and the upper mold, the holding jig 11 can be moved more efficiently to place the core. Therefore, it is possible to contribute to shortening the operation cycle time.

[0044] Since the core placement device 10 is provided with the lateral movement mechanism 15 that moves the holding jig 11 in the Y direction outside the space S, the holding jig 11 can be moved to a position away from the molding machine 1. Thus, the operator can easily perform visual inspection of the upper mold and the lower mold M. Thereby, the workability of the operator can be improved.

[0045] When the holding jig 11 is retracted from between the molding machine 1 and the operator, it rotates 90° in the positive direction in the front space (moves from position P1 to position P2). In addition, when the holding jig 11 is moved from space S to outside space S, it rotates 180° in the negative direction using the space from space S to the front space (moves from position P6 to position P1). In this way, the holding jig 11 does not need to rotate 180° only in the front space. Thus, in the present embodiment, the operating range of the holding jig 11 in the front space can be minimized as much as possible. As a result, the workability of the operator can be further improved, and as a result, the operation cycle time can be shortened.

[0046] The holding jig 11 moves along the Y direction by the lateral movement mechanism 15 in a state where the holding surface 11a is arranged parallel to the Z direction. The thickness of the holding jig 11 is smaller than the long side and the short side of the holding surface 11a. Thus, compared with the case of moving the holding jig 11 in a state where the holding surface 11a faces the Z direction, the space in the X direction required for moving the holding jig 11 can be suppressed.

[0047] The core placement device 10 includes a forward and backward movement mechanism 14 that moves the holding jig 11 along the X direction. Therefore, the rotation radius of the holding jig 11 can be shortened, and as a result, the distance between the upper mold and the lower mold M can be minimized. As a result, the stroke of the upper mold and the lower mold M becomes shorter, so the time taken for mold clamping and the like can be shortened. Thereby, the productivity is improved.

[0048] The forward and backward movement mechanism 14 moves the holding jig 11 along the X direction at position P3 where the holding jig 11 is separated from space S in the Y direction. Therefore, during the visual inspection of the upper mold and the lower mold M by the operator, the holding jig 11 can be moved along the X direction in the adjacent space. Thereby, the operation cycle time is shortened and the productivity is improved.

[0049] As described above, various exemplary embodiments have been described, but the present invention is not limited to the above-described exemplary embodiments, and various omissions, substitutions, and changes can be made.

[0050] In the embodiment, the molding system 100 is illustrated, but the core placement device 10 can also be used in a system other than the molding system 100. The core placement device 10 can also be used, for example, in a casting system equipped with a casting machine to place a core in a lower mold (lower die) disposed opposite to an upper mold (upper die).

[0051] (First Variation Example)

[0052] The core placement device 10 may also not be provided with the forward and backward movement mechanism 14. In this case, the rotation radius of the holding jig 11 can also be adjusted so that it can move between the position P1 and the position P6 by rotating 180°. In addition, in this case, the operation method of the molding system 100 does not include the process of moving the holding jig 11 in the X direction by the above-described forward and backward movement mechanism 14. That is, after the holding jig 11 moves in the order of the position P1, the position P2, and the position P3, it does not move to the position P4, but stands by at the position P3 until the operator finishes the visual inspection of the upper mold and the lower mold M. Then, the process of moving the holding jig 11 in the Y direction is performed. As a result, the holding jig 11 moves from the position P3 to the position P2. Then, the process of rotating the holding jig 11 90° in the positive direction is performed. As a result, the holding jig 11 moves from the position P2 to the position P6. Then, after placing the core in the lower mold M in the same manner as in the embodiment, the process of rotating the holding jig 11 180° in the negative direction is performed. As a result, the holding jig 11 moves from the position P6 to the position P1 as Figure 12 shown. After that, the molding system 100 can operate in the same manner as in the embodiment.

[0053] (Second modification example)

[0054] The molding system 100 can also operate as follows. For example, the process of rotating the holding jig 11 90° in the positive direction may not be included in the process of retracting the holding jig 11 from between the molding machine 1 and the operator. That is, in the process of retracting the holding jig 11 from between the molding machine 1 and the operator, the holding jig 11 may not be rotated, but the holding jig 11 may be moved from the position P1 in the -Y direction while keeping the holding surface 11a parallel to the horizontal direction (X direction and Y direction). During the period when the holding jig 11 retracts from between the molding machine 1 and the operator to the adjacent space, the operator visually inspects the upper mold and the lower mold M before placing the core. Then, the process of moving the holding jig 11 in the Y direction is performed. As a result, the holding jig 11 moves from the adjacent space to the position P1. Then, the process of moving the holding jig 11 from the position P1 in the X direction by the forward and backward movement mechanism 14 is performed. As a result, the holding jig 11 approaches the molding machine 1. Then, the process of rotating the holding jig 11 180° in the positive direction instead of 90° is performed. As a result, the holding jig 11 moves to the position P6. After that, the molding system 100 can operate in the same manner as in the embodiment. In addition, the process of moving the holding jig 11 from the position P1 in the X direction by the forward and backward movement mechanism 14 is not essential and may not be performed.

[0055] (Third modification example)

[0056] In the second modification example as described above, the process of moving the holding jig 11 in the X direction by the forward and backward movement mechanism 14 is performed after the holding jig 11 has moved from the adjacent space to the position P1. In contrast, in the third modification example, the process of moving the holding jig 11 in the X direction by the forward and backward movement mechanism 14 is performed while the holding jig 11 is retreating from between the operator and the molding machine 1 to the adjacent space. In the third modification example, during the period when the operator visually inspects the upper mold and the lower mold M, in the adjacent space, the holding jig 11 can be moved in the X direction, so the operation cycle time is shortened and the productivity is improved. The third modification example is the same as the second modification example in other points.

[0057] (Fourth Modification Example)

[0058] The molding system 100 may also operate as follows. For example, the process of retreating the holding jig 11 from between the molding machine 1 and the operator may not include the process of rotating the holding jig 11 90° in the positive direction. That is, in the process of retreating the holding jig 11 from between the molding machine 1 and the operator, the holding jig 11 may not be rotated, and while keeping the holding surface 11a parallel to the horizontal direction (X direction and Y direction), the holding jig 11 may be moved from the position P1 in the -Y direction. Next, in the adjacent space, the process of rotating the holding jig 11 90° in the positive direction is performed. Thus, the holding jig 11 moves to the position P3. Next, in the adjacent space, the process of moving the holding jig 11 in the X direction by the forward and backward movement mechanism 14 is performed. Thus, the holding jig 11 moves from the position P3 to the position P4. During the period when the holding jig 11 retreats from between the molding machine 1 and the operator to the adjacent space, the operator visually inspects the upper mold and the lower mold M before placing the core.

[0059] Next, the process of moving the holding jig 11 from the adjacent space in the Y direction is performed. Thus, the holding jig 11 moves from the position P4 to the position P5. Next, the process of rotating the holding jig 11 90° in the positive direction is performed. Thus, the holding jig 11 moves from the position P5 to the position P6. The holding surface 11a faces the upper surface Ma of the lower mold M in the Z direction. After that, the molding system 100 may operate in the same manner as in the embodiment. In addition, the process of moving the holding jig 11 in the X direction by the forward and backward movement mechanism 14 is not necessary and may not be implemented. Also, in the adjacent space, the process of rotating the holding jig 11 90° in the positive direction and the process of moving the holding jig 11 in the X direction may be performed in a swapped order.

[0060] (Fifth Modification Example)

[0061] In an embodiment, the working position of the operator is set in the front space, but the working position can also be set in the adjacent space, for example. In this case, in the initial state of the molding system 100, the holding jig 11 is not disposed at the position P1 in the front space, but is disposed at a position adjacent to the working position of the operator in the X direction in the adjacent space. In a state where the holding jig 11 is disposed at this position, the operator holds the core with the holding jig 11. Then, the operator moves from the adjacent space to the front space and visually inspects the upper mold and the lower mold M before placing the core. Then, the operator moves outside the movable range of the core placement device 10.

[0062] Next, a process of moving the holding jig 11 in the Y direction is performed. As a result, the holding jig 11 moves from the adjacent space to the position P1. This process is performed in a state where there is no operator outside the movable range of the core placement device 10. For example, a button for operating the core placement device 10 is provided outside the movable range of the core placement device 10. In addition, the core placement device 10 is configured to operate after confirming that there is no operator outside the movable range of the core placement device 10 through an area sensor or the like.

[0063] Next, in the front space, a process of rotating the holding jig 11 180° in the positive direction is performed. As a result, the holding jig 11 moves to the position P6. After that, the molding system 100 can operate in the same manner as in the embodiment. In addition, a process of moving the holding jig 11 in the X direction from the position P1 by the front-back moving mechanism 14 may be performed between the process of moving the holding jig 11 in the Y direction and the process of rotating the holding jig 11 180° in the positive direction. Further, a process of moving the holding jig 11 in the X direction in the adjacent space by the front-back moving mechanism 14 may be performed before the process of moving the holding jig 11 in the Y direction.

[0064] (Sixth modification example)

[0065] As described above, in the fifth modification example, a process of rotating the holding jig 11 180° in the positive direction in the front space is performed. In contrast, in the sixth modification example, a process of rotating the holding jig 11 90° in the positive direction in the adjacent space and a process of rotating the holding jig 11 90° in the positive direction in the front space are performed. The sixth modification example is the same as the fifth modification example in other points. In the sixth modification example, during the period when the operator visually inspects the upper mold and the lower mold M, a process of rotating the holding jig 11 90° in the positive direction in the adjacent space is performed. As a result, the holding jig 11 moves to the position P4. Then, the operator moves outside the movable range of the core placement device 10.

[0066] Next, a process of moving the holding jig 11 in the Y direction is performed. As a result, the holding jig 11 moves from the adjacent space to the position P5. This process is performed by the same interlock control as in the fifth modification example in a state where there is no operator outside the movable range of the core placement device 10. Next, in the front space, a process of rotating the holding jig 11 90° in the positive direction is performed. As a result, the holding jig 11 moves from the position P5 to the position P6. After that, the molding system 100 can operate in the same manner as in the embodiment.

[0067] [Summary of Embodiments of the Present Disclosure]

[0068] The present disclosure includes the following aspects.

[0069] (Article 1)

[0070] A core placement device according to one aspect of the present disclosure places a core on a lower mold that is disposed opposite to an upper mold in the vertical direction, and includes: a holding jig having a holding surface for holding the core; a rotation mechanism having a rotation axis parallel to a first direction orthogonal to the vertical direction, and rotationally driving the holding jig; and a first moving mechanism that moves the holding jig along the first direction outside the space between the upper mold and the lower mold, and the holding jig moves between the outside of the space and the core placement position by rotating about the rotation axis, and the core placement position is a position where the holding surface faces the upper surface of the lower mold in the vertical direction.

[0071] In this core placement device, the holding jig moves between the outside of the space between the upper mold and the lower mold and the core placement position by rotating about the rotation axis. That is, the holding jig can move between the outside of the space and the core placement position inside the space only by rotational movement. In this way, the holding jig can be efficiently moved to place the core, so that it is possible to contribute to shortening the operation cycle time. In addition, in this core placement device, the holding jig can be moved to a position separated from the upper mold and the lower mold, so that the operator can easily perform visual inspection of the upper mold and the lower mold. As a result, the workability of the operator can be improved. Moreover, the holding jig does not need to rotate 180° in the space in front of the upper and lower molds. There is a case where an operator is provided in the space in front of the upper and lower molds to place the core on the core holding mechanism and perform visual inspection of the lower mold and the upper mold. Even in this case, since the operation range of the core placement device in the space in front of the upper and lower molds can be minimized as much as possible, the workability of the operator can be further improved.

[0072] (Article 2)

[0073] In the core placement device described in Item 2, the holding jig can be moved along the first direction by the first moving mechanism in a state where the holding surface is arranged parallel to the vertical direction. In this case, if the thickness of the holding jig is smaller than the size of the holding surface, the space required for moving the holding jig can be suppressed as compared with the case where the holding jig is moved in a state where the holding surface faces the vertical direction.

[0074] (Item 3)

[0075] The core placement device described in Item 1 or 2 may further include: a second moving mechanism that moves the holding jig along a second direction orthogonal to the vertical direction and the first direction. In this case, the rotation radius of the holding jig can be shortened, so that the distance between the upper mold and the lower mold can be minimized. As a result, the stroke of the upper mold and the lower mold becomes shorter, so that the time required for mold closing and the like can be shortened. Thereby, the productivity is improved.

[0076] (Item 4)

[0077] In the core placement device described in Item 3, the second moving mechanism can move the holding jig along the second direction at a position where the holding jig is separated from the space in the first direction. In this case, during the visual inspection of the upper mold and the lower mold by the operator, the holding jig can be moved along the second direction. Thereby, the operation cycle time is shortened and the productivity is improved.

Claims

1. A core placement device, which places the core on a lower mold arranged opposite to an upper mold in a vertical direction, characterized in that: have: a holding fixture having a holding surface for holding the core; A rotating mechanism having a rotating axis parallel to a first direction orthogonal to the vertical direction, and driving the holding fixture to rotate; as well as A first moving mechanism moves the holding fixture along the first direction outside the space between the upper die and the lower die, The holding jig is rotated about the rotation axis to move between the outside of the space and a core placement position where the holding surface and the upper surface of the lower mold face each other in the vertical direction.

2. The core placement device according to claim 1, characterized in that: The holding jig is moved along the first direction by the first moving mechanism in a state in which the holding surface is arranged parallel to the vertical direction.

3. The core placement device according to claim 1 or 2, characterized in that: Also available: The second moving mechanism moves the holding jig along a second direction that is orthogonal to the vertical direction and the first direction.

4. The core placement device according to claim 3, characterized in that: The second moving mechanism moves the holding jig along the second direction at a position where the holding jig is separated from the space in the first direction.

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