Mold replacement method

Abstract

To realize a method of exchanging a metal mold that is contributable to a simplification in unloading work of stationary and movable dies during exchanging the stationary and movable dies.SOLUTION: A method of exchanging a metal mold according to one embodiment of the present disclosure comprises the steps of: coupling a stationary die (4) and a movable die (7) of a vertically-parted molding machine (1) together; releasing a coupled state of the movable die (7) and a movable-die installation base (8); rotating the stationary die (4) and the movable die (7) in a coupled state and arranging the movable die (7) on the upper side of the stationary die (4); releasing a coupling state of the stationary die (4) and a stationary-die installation base (5); and unloading the stationary die (4) and the movable die (7) in a coupled state from the stationary-die installation base (5), in a state a protrusion (72a) projecting outward from the movable die (7) is supported by a fork (12) of an elevator (11).SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a mold exchange method. [Background technology]

[0002] A typical vertically split molding machine achieves mold opening and closing by moving a movable mold laterally relative to a fixed mold, as disclosed in Patent Document 1. In such a vertically split molding machine, it is necessary to exchange the fixed mold and the movable mold depending on the mold to be molded. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-144802 A Summary of the Invention [Problem to be solved by the invention]

[0004] The present applicant has found the following problem: In a typical vertically split molding machine, when replacing the fixed and movable dies, the fixed and movable dies are lifted and carried out separately using a large-scale device such as a hoist crane. Therefore, the work of carrying out the fixed and movable dies when replacing them is cumbersome.

[0005] The present disclosure has been made in consideration of such problems, and realizes a mold changing method that can contribute to simplifying the work of removing the fixed mold and the movable mold when changing the fixed mold and the movable mold. [Means for solving the problem]

[0006] A mold changing method according to one aspect of the present disclosure includes: Fixed type and a fixed equipment base to which the fixed type is connected; Movable type and a movable equipment base to which the movable mold is connected and which can approach and move away from the fixed equipment base; A mold changing method for a vertically split molding machine comprising: a step of connecting the fixed mold and the movable mold; releasing the connection between the movable mold and the movable mold equipment base; a step of rotating the fixed mold and the movable mold in a connected state by a rotation mechanism that rotates the fixed mold equipment base, and disposing the movable mold above the fixed mold; releasing the connection between the fixed type and the fixed equipment base; a step of carrying the fixed mold and the movable mold in the connected state outwardly from the fixed mold equipment base while supporting a protruding portion protruding outwardly from the movable mold by a fork of a lifting device; Equipped with.

[0007] The above-mentioned mold exchange method is as follows: a step of connecting the fixed mold and the movable mold; carrying the fixed mold and the movable mold in a connected state into the fixed mold equipment base while supporting a protruding portion of the movable mold arranged above the fixed mold with a fork of a lifting device; connecting the fixed mold to the fixed equipment base; a step of rotating the fixed die and the movable die in the connected state by the rotation mechanism to arrange the fixed die and the movable die side by side; coupling the mobile mold to the mobile mold equipment base; It is preferable to have

[0008] In the above-mentioned mold changing method, it is preferable that the lifting device is provided on a cart.

[0009] In the above-mentioned mold changing method, it is preferable that when the cart is brought close to the fixed equipment base, the cart is inserted into an insertion portion formed below the fixed equipment base. Effect of the Invention

[0010] According to the present disclosure, a mold replacement method can be realized that can contribute to simplifying the work of removing the fixed mold and the movable mold when replacing the fixed mold and the movable mold. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a diagram showing the vertically split type molding machine according to the embodiment as viewed from the X-axis + side. [Diagram 2] FIG. 2 is a diagram showing the vertically split type molding machine according to the embodiment as viewed from the Z-axis + side. [Diagram 3] FIG. 2 is a diagram showing the vertically split type molding machine according to the embodiment as viewed from the Y-axis negative side. [Figure 4] 13 is a view showing a state in which a movable mold is removed from a movable mold equipment base, as viewed from the X-axis + side, in the mold changing method for the vertical split-type molding machine of the embodiment. FIG. [Diagram 5] 13 is a view showing a state in which the fixed mold and the movable mold in the connected state are rotated in the mold changing method of the vertical split type molding machine of the embodiment, as viewed from the X-axis + side. FIG. [Figure 6] 13 is a view showing a state in which the fixed mold and the movable mold in the connected state are rotated, as viewed from the Y-axis negative side, in the mold replacement method of the vertical split-type molding machine of the embodiment. FIG. [Figure 7] 13 is a view seen from the X-axis + side showing how a protruding portion of a movable mold is placed on a fork of a lifting device in a mold changing method for a vertically split-type molding machine according to an embodiment. FIG. [Figure 8] 13 is a view seen from the Z-axis + side showing how a protruding portion of a movable mold is placed on a fork of a lifting device in a mold changing method for a vertically split-type molding machine according to an embodiment. FIG. [Figure 9] 13 is a view seen from the X-axis + side showing how the fixed mold and the movable mold in a connected state are raised in the mold changing method of the vertical split-type molding machine of the embodiment. FIG. [Figure 10] 13 is a view seen from the X-axis + side showing how the fixed mold and the movable mold in the connected state are carried out in the mold changing method of the vertical split type molding machine of the embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, specific embodiments to which the present disclosure is applied will be described in detail with reference to the drawings. However, the present disclosure is not limited to the following embodiments. In addition, the following description and drawings are appropriately simplified for clarity of explanation.

[0013] First, the basic configuration of the vertically split type molding machine of this embodiment will be briefly described. In the following description, for clarity, a three-dimensional (XYZ) coordinate system will be used. Here, the + side of the X axis is the right side of the vertically split type molding machine, and the - side of the X axis is the left side of the vertically split type molding machine. The + side of the Y axis is the front side of the vertically split type molding machine, and the - side of the Y axis is the rear side of the vertically split type molding machine. The + side of the Z axis is the upper side of the vertically split type molding machine, and the - side of the Z axis is the lower side of the vertically split type molding machine.

[0014] Fig. 1 is a view of the vertically split type molding machine of the present embodiment as seen from the X-axis + side, Fig. 2 is a view of the vertically split type molding machine of the present embodiment as seen from the Z-axis + side, and Fig. 3 is a view of the vertically split type molding machine of the present embodiment as seen from the Y-axis - side.

[0015] 1 to 3, the vertically split type molding machine 1 includes an equipment frame 2, tie bars 3, a fixed mold 4, a fixed mold equipment base 5, a rotation mechanism 6, a movable mold 7, a movable mold equipment base 8, an actuator 9, a connecting mechanism 10, and an injection mechanism and a control device (not shown). Note that the following explanation of the basic configuration of the vertically split type molding machine 1 will be given based on the states in FIGS. 1 to 3.

[0016] The equipment frame 2 is, for example, a frame body in which a portal frame 21 arranged on the Y-axis + side and a portal frame 22 arranged on the Y-axis - side are connected by beams 23. The tie bars 3 extend in the Y-axis direction and are passed through the portal frames 21, 22 so as to span between the portal frame 21 arranged on the Y-axis + side and the portal frame 22 arranged on the Y-axis - side.

[0017] The tie bars 3 are arranged at the four corners of a rectangle when viewed from the Y-axis direction, as shown in Fig. 3. When one end of the tie bar 3 on the Y-axis + side or the Y-axis - side is fixed and the other end of the tie bar 3 is retracted, the tie bar 3 expands and exerts a restoring force.

[0018] The fixed mold 4 includes a fixed mold main body 41 and a fixed mold die base 42. The fixed mold main body 41 includes a cavity surface for molding a mold on the surface on the + side of the Y axis of the fixed mold main body 41. The - side of the Y axis of the fixed mold main body 41 is connected to the fixed mold die base 42.

[0019] The fixed equipment base 5 is configured to be connectable to the fixed die base 42. At this time, the fixed equipment base 5 is configured to be able to release the connection state of the fixed die base 42. In other words, the fixed mold 4 is detachable from the fixed equipment base 5. Note that the connection mechanism between the fixed mold 4 and the fixed equipment base 5 can be a connection mechanism used in a general vertically split type molding machine.

[0020] The fixed equipment base 5 is connected to the rotation mechanism 6. The rotation mechanism 6 rotates the fixed equipment base 5 connected to the rotation mechanism 6 around the X-axis. The rotation mechanism 6 includes, for example, a rotation shaft 61 connected to the fixed equipment base 5 so as to be able to transmit a rotational driving force, and a drive source such as a motor connected to the rotation shaft 61. An end portion on the X-axis + side and an end portion on the X-axis - side of the rotation shaft 61 are rotatably connected to the equipment frame 2 via a fixing jig 62.

[0021] The movable mold 7 comprises a movable mold body 71 and a movable die base 72. The movable mold body 71 has a cavity surface for molding a mold on the surface on the Y-axis negative side of the movable mold body 71. The Y-axis positive side of the movable mold body 71 is connected to the movable die base 72. As shown in Fig. 2, the movable die base 72 has protruding parts 72a that protrude towards the X-axis positive side and the X-axis negative side with respect to the movable mold body 71.

[0022] The movable die base 72 can be connected to the movable die equipment base 8. At this time, the movable die base 72 can be released from its connected state to the movable die base 8. In other words, the movable die 7 can be attached to and detached from the movable equipment base 8. The connecting mechanism between the movable die 7 and the movable equipment base 8 can be the same as that used in a typical vertically split molding machine.

[0023] The tie bars 3 are passed through the movable mold equipment base 8. At this time, the movable mold equipment base 8 is configured so as to be fixed to the tie bars 3 in a state in which the fixed mold 4 and the movable mold 7 are arranged at a predetermined interval.

[0024] The actuator 9 is connected to the movable equipment base 8. The actuator 9 moves the connected movable equipment base 8 in the Y-axis direction. The actuator 9 can be configured, for example, as a linear actuator, and an end of the actuator 9 on the Y-axis + side is connected to the equipment frame 2, and an end of the actuator 9 on the Y-axis - side is connected to the movable equipment base 8.

[0025] The connecting mechanism 10 connects the fixed die 4 and the movable die 7. The connecting mechanism 10 is configured to be able to connect the fixed die 4 and the movable die 7, for example, in a state where the cavity surface of the fixed die 4 and the cavity surface of the movable die 7 are substantially butted against each other. The connecting mechanism 10 includes, for example, a clamp. However, the connecting mechanism 10 may be configured in any way as long as it is able to connect the fixed die 4 and the movable die 7.

[0026] The injection mechanism injects sand, molten metal, and other mold raw materials into the cavity formed by the fixed mold 4 and the movable mold 7. The control device controls, for example, the rotation mechanism 6, the actuator 9, the connecting mechanism 10, and the injection mechanism, and also controls the attachment and detachment of the fixed mold 4 to the fixed equipment base 5 and the attachment and detachment of the movable mold 7 to the movable equipment base 8.

[0027] When using such a vertically split type molding machine 1 to mold a mold, first, the actuator 9 is controlled so that the cavity surface of the fixed mold 4 and the cavity surface of the movable mold 7 are positioned at a predetermined distance, and the fixed mold 4 and the movable mold 7 are closed.

[0028] Next, the other end of the tie bar 3 is pulled in and extended, and in the state where the tie bar 3 exerts a restoring force, the movable die equipment base 8 is fixed to the tie bar 3. This makes it possible to apply a predetermined compressive force to the raw material when the raw material is filled in the cavity formed by the fixed die 4 and the movable die 7.

[0029] Next, the raw material is injected from the injection mechanism into the cavity formed by the fixed mold 4 and the movable mold 7, and after a predetermined time has elapsed, the actuator 9 is controlled to move the movable mold 7 to the + side of the Y axis, and the fixed mold 4 and the movable mold 7 are opened.

[0030] At this time, for example, the molded mold is left in the fixed mold 4. Therefore, for example, the rotation mechanism 6 is controlled to rotate the fixed mold 4 so that the cavity surface of the fixed mold 4 is positioned on the +Z axis side, and the mold is removed from the fixed mold 4, whereby the mold molding operation is completed.

[0031] Next, a flow of replacing the fixed mold 4 and the movable mold 7 in the vertically split molding machine 1 having the above-mentioned configuration will be described. FIG. 4 is a view from the X-axis + side showing a state in which the movable mold is removed from the movable mold equipment base in the mold replacement method for the vertically split molding machine of this embodiment. FIG. 5 is a view from the X-axis + side showing a state in which the fixed mold and the movable mold in the connected state are rotated in the mold replacement method for the vertically split molding machine of this embodiment. FIG. 6 is a view from the Y-axis - side showing a state in which the fixed mold and the movable mold in the connected state are rotated in the mold replacement method for the vertically split molding machine of this embodiment. FIG. 7 is a view from the X-axis + side showing a state in which the protruding part of the movable mold is placed on the fork of the lifting device in the mold replacement method for the vertically split molding machine of this embodiment. FIG. 8 is a view from the Z-axis + side showing a state in which the protruding part of the movable mold is placed on the fork of the lifting device in the mold replacement method for the vertically split molding machine of this embodiment. Fig. 9 is a view from the X-axis + side showing how the fixed and movable dies in the connected state are lifted in the mold exchange method of the vertical split-type molding machine of the present embodiment. Fig. 10 is a view from the X-axis + side showing how the fixed and movable dies in the connected state are removed in the mold exchange method of the vertical split-type molding machine of the present embodiment.

[0032] First, the control device controls the actuator 9 to move the movable die 7 to the negative side of the Y axis, so that the cavity surface of the fixed die 4 and the cavity surface of the movable die 7 are substantially butted together, as shown in Fig. 1. Then, the control device controls the connecting mechanism 10 to connect the fixed die 4 and the movable die 7.

[0033] Next, the control device releases the connection between the movable mold 7 and the movable equipment base 8, and then controls the actuator 9 to move the movable equipment base 8 to the + side of the Y axis, as shown in Fig. 4. As a result, the fixed mold 4 and the movable mold 7 in the connected state are cantilevered by the fixed equipment base 5.

[0034] Next, the control device controls the rotation mechanism 6 to rotate the fixed mold 4 and the movable mold 7 in the connected state as shown in Figures 5 and 6, and position the movable mold 7 on the +Z-axis side with respect to the fixed mold 4. At this time, as shown in Figure 6, the protrusion 72a of the movable mold 7 is positioned on the +Z-axis side of the fixed mold 4 and the movable mold 7 in the connected state, and protrudes from the movable mold main body 71 on the +X-axis side and the -X-axis side.

[0035] Next, the control device releases the connection between the fixed mold 4 and the fixed equipment base 5, and uses the lifting device 11 (see FIG. 7, etc.) to carry out the connected fixed mold 4 and movable mold 7. Here, the lifting device 11 has a gap that allows the movable mold body 71 of the movable mold 7 to be inserted, is equipped with forks 12 that can be raised and lowered in the Z-axis direction, and is mounted on a cart 13. At this time, it is preferable that the lifting device 11 and the cart 13 can be controlled by the control device.

[0036] For example, the control device controls the trolley 13 to position the lifting device 11 close to the Y-axis -side area of ​​the vertically split type molding machine 1, as shown in Figures 7 and 8, and to position the fork 12 on the Z-axis -side relative to the protrusion 72a of the movable mold 7.

[0037] In other words, while inserting the movable mold body 71 of the movable mold 7 between the claw portion 12a on the X-axis + side and the claw portion 12b on the X-axis - side of the fork 12, the claw portion 12a on the X-axis + side is positioned on the Z-axis - side relative to the protrusion 72a on the X-axis + side of the movable mold 7, and the claw portion 12b on the X-axis - side is positioned on the Z-axis - side relative to the protrusion 72a on the X-axis - side of the movable mold 7.

[0038] At this time, it is preferable to insert the Y-axis + side portion of the cart 13 into the insertion portion 14 formed on the Z-axis - side of the fixed equipment base 5. This makes it possible to shorten the length of the claws 12a, 12b of the fork 12 in the Y-axis direction compared to when the Y-axis + side portion of the cart 13 is not inserted into the insertion portion 14 formed on the Z-axis - side of the fixed equipment base 5.

[0039] Furthermore, as described below, when the fixed mold 4 and the movable mold 7 are supported in a connected state by the fork 12, the fixed mold 4 and the movable mold 7 in a connected state can be supported at a position close to the center of gravity of the cart 13, and the fixed mold 4 and the movable mold 7 in a connected state can be supported in a stable state.

[0040] Next, for example, the control device controls the lifting device 11 to raise the fork 12, and as shown in Figure 9, places the protrusion 72a of the movable mold 7 on the claws 12a, 12b of the fork 12, and raises the fixed mold 4 and movable mold 7 in a connected state while supporting the fixed mold 4 and movable mold 7 in a connected state by the fork 12.

[0041] Next, for example, the control device controls the trolley 13 to remove the connected fixed mold 4 and movable mold 7 from the fixed equipment base 5, as shown in Figure 10, and the removal of the connected fixed mold 4 and movable mold 7 is completed.

[0042] Thereafter, by carrying out the flow of removing the fixed mold 4 and the movable mold 7 in the opposite direction, new fixed mold 4 and movable mold 7 can be carried in and the fixed mold 4 and movable mold 7 can be replaced. In detail, first, the cavity surface of the new fixed mold 4 is substantially butted against the cavity surface of the similarly new movable mold 7, and the fixed mold 4 and the movable mold 7 are connected by the connecting mechanism 10.

[0043] Next, for example, the control device controls the lifting device 11 to place the protruding portion 72a of the movable die 7 arranged on the Z-axis + side with respect to the fixed die 4 on the fork 12, thereby supporting the fixed die 4 and the movable die 7 in a connected state by the fork 12. Then, the control device controls the cart 13 to carry the fixed die 4 and the movable die 7 in a connected state into the Z-axis + side of the fixed equipment base 5.

[0044] Next, for example, the control device controls the lifting device 11 to lower the fixed mold 4 and movable mold 7 in the connected state, places the fixed mold 4 and movable mold 7 in the connected state on the fixed equipment base 5, and connects the fixed mold 4 to the fixed equipment base 5.

[0045] Next, the control device controls the rotation mechanism 6 to rotate the fixed die 4 and the movable die 7 in a connected state, and arranges the fixed die 4 and the movable die 7 side by side in the Y-axis direction. In other words, the cavity surface of the fixed die 4 is arranged on the + side of the Y-axis, and the cavity surface of the movable die 7 is arranged on the - side of the Y-axis.

[0046] Next, the control device controls the actuator 9 to move the movable mold equipment base 8 to the negative side of the Y axis, and connects the movable mold 7 to the movable mold equipment base 8. This makes it possible to install a new fixed mold 4 and movable mold 7 in the vertically split type molding machine 1, and to replace the replaced fixed mold 4 and movable mold 7 with the new fixed mold 4 and movable mold 7.

[0047] In this way, the mold replacement method of this embodiment involves removing the fixed mold 4 and the movable mold 7 from the vertical split type molding machine 1 while the fixed mold 4 and the movable mold 7 are connected, which can contribute to simplifying the work of removing the fixed mold 4 and the movable mold 7 compared to removing the fixed mold 4 and the movable mold 7 individually.

[0048] Moreover, in the mold exchanging method of this embodiment, the fixed mold 4 and the movable mold 7 are loaded into the vertical split type molding machine 1 while being connected to each other, which contributes to simplifying the loading work of the fixed mold 4 and the movable mold 7 compared to loading the fixed mold 4 and the movable mold 7 separately. As a result, the mold exchanging method of this embodiment can improve the workability when replacing the fixed mold 4 and the movable mold 7.

[0049] Furthermore, in the mold exchange method of this embodiment, the fixed mold 4 and the movable mold 7 in a connected state are carried in or out using the protrusion 72a of the movable mold 7, so that the fixed mold 4 and the movable mold 7 in a connected state can be carried in or out using a small lifting device 11 having a fork 12. Therefore, compared to the case where the fixed mold 4 and the movable mold 7 are carried in or out using a large lifting device such as a hoist crane, this can contribute to saving the equipment space for molding the mold.

[0050] Furthermore, the mold exchange method of this embodiment rotates the fixed mold 4 and the movable mold 7 while they are connected using the connecting mechanism 10, so that the position of the fixed mold 4 and the movable mold 7 can be easily changed as appropriate depending on the flow of loading or unloading.

[0051] The present disclosure is not limited to the above-described embodiment, and can be modified as appropriate without departing from the spirit and scope of the present disclosure.

[0052] For example, in this embodiment, a new fixed mold 4 and a movable mold 7 are installed in the vertical split type molding machine 1 in a flow opposite to the flow in which the fixed mold 4 and the movable mold 7 are removed, but the flow in which the new fixed mold 4 and the movable mold 7 are installed in the vertical split type molding machine 1 is not particularly limited.

[0053] For example, in this embodiment, after the connection between the fixed mold 4 and the fixed equipment base 5 is released, the fixed mold 4 and the movable mold 7 in a connected state are supported by the lifting device 11, but when the connected fixed mold 4 and movable mold 7 are transported out of the fixed equipment base 5, it is only necessary that the connection between the fixed mold 4 and the fixed equipment base 5 is released.

[0054] For example, although the vertically split type molding machine 1 of the present embodiment includes the tie bars 3, the tie bars 3 may be omitted.

[0055] For example, the fixed mold 4 of this embodiment includes a fixed mold body 41 and a fixed die base 42, but the fixed die base 42 may be omitted. Similarly, the movable mold 7 of this embodiment includes a movable mold body 71 and a movable die base 72, but the movable die base 72 may be omitted.

[0056] For example, the cart 13 in this embodiment is controllable, i.e., configured to be movable by a drive source, but may be configured to be moved by human power. Also, the lifting device 11 is not necessarily limited to a configuration controlled by a control device as long as it is configured to lift and lower the forks 12. [Explanation of symbols]

[0057] 1 Vertical split molding machine 2 Equipment Frame 21, 22 Gate frame 23 Beam 3 Tie bar 4 Fixed type 41 Fixed body 42 Fixed die base 5 Fixed equipment base 6 Rotation mechanism 61 Rotational axis 62 Fixture 7 Movable type 71 Movable body 72 Movable die base, 72a protrusion 8 Mobile Equipment Base 9 Actuators 10 Connection mechanism 11 Lifting device 12 Fork, 12a, 12b claws 13 Trolley 14 Insertion section

Claims

1. Fixed type and a fixed equipment base to which the fixed type is connected; Movable type and a movable equipment base to which the movable mold is connected and which can approach and move away from the fixed equipment base; A mold changing method for a vertically split molding machine comprising: a step of connecting the fixed mold and the movable mold; a step of releasing the connection between the movable mold and the movable mold equipment base and supporting the fixed mold and the movable mold in a cantilever manner while the fixed mold equipment base is connected to each other; a step of rotating the fixed mold and the movable mold in the connected state together with the fixed mold equipment base by a rotation mechanism that rotates the fixed mold equipment base, and disposing the movable mold above the fixed mold; releasing the connection between the fixed type and the fixed equipment base; a step of carrying the fixed mold and the movable mold in the connected state outwardly from the fixed mold equipment base while supporting a protruding portion protruding outwardly from the movable mold by a fork of a lifting device; Equipped with The lifting device is provided on a cart, and when the cart is brought close to the fixed equipment base, the cart is inserted into an insertion portion formed below the fixed equipment base, in a mold changing method.

2. a step of connecting the fixed mold and the movable mold; carrying the fixed mold and the movable mold in a connected state into the fixed mold equipment base while supporting a protruding portion of the movable mold arranged above the fixed mold with a fork of a lifting device; connecting the fixed mold to the fixed equipment base; a step of rotating the fixed die and the movable die in the connected state by the rotation mechanism to arrange the fixed die and the movable die side by side; coupling the mobile mold to the mobile mold equipment base; The mold changing method according to claim 1 , comprising:

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