Die cast mold and die cast method

Abstract

To improve the quality and the productivity of a die cast product.SOLUTION: A die cast mold 10 comprises: a fixed die 21; a movable die 31 advanceable / retreatable in a mold closing / opening direction with respect to the fixed die 21; a slide core 41 movable in a direction intersecting the advancing / retreating direction of the movable die 31; and a float core 51 provided in a cavity 43 formed inside the slide core 41 and movable in a direction having a prescribed angle with respect to the moving direction of the slide core 41. A cavity 61 is defined by the fixed die 21, the movable die 31, the slide core 41, and the float core 51. The die cast mold includes a positioning mechanism 45 capable of positioning the float core 51 in the cavity 43 formed inside the slide core 41.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a die casting mold and a die casting method. [Background technology]

[0002] Conventionally, there has been known a die casting die comprising a fixed die, a movable die which can advance and retreat in the die clamping / opening direction relative to the fixed die, a slide core which can move in a direction intersecting the advance and retreat direction of the movable die, and a float core which is provided in a cavity formed inside the slide core and can move in a direction having a predetermined angle with respect to the movement direction of the slide core, and in which a cavity is defined by the fixed die, movable die, slide core, and float core. For example, the following Patent Documents 1 and 2 are prior art documents which disclose conventional die casting dies equipped with a float core. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Publication number 7-26037 [Patent Document 2] Special Publication No. 3-13941 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the float core provided in the die-casting mold according to the conventional technology is freely movable within the cavity of the slide core except during casting (when the mold is clamped), and there was a risk of the float core coming into contact with other parts or the die-cast product, which could cause an abnormality. Specifically, when the cast die-cast product is removed from the mold, the slide core moves away from the die-cast product, and during this movement, the float core, which is freely movable within the cavity, moves toward the die-cast product and protrudes, creating the risk of coming into contact with the die-cast product, causing scratches, or causing the casting machine to stop abnormally.

[0005] On the other hand, in the device disclosed in Patent Document 1 mentioned above, a piston ring to prevent burrs from entering the float core (floating core) is fitted to the float core (floating core) as a means of restricting the movement of the float core (floating core). However, if the clearance between the cavity (recess) and the float core (floating core) is reduced in this way, the movement of the float core (floating core) will always be impaired, which is expected to cause problems such as equipment malfunctions and reduced productivity.

[0006] As another prior art, there is a die casting mold in which a cylinder for driving the float core is provided inside the slide core and the float core is connected to the cylinder. However, although this configuration can prevent unintended movement of the float core, adding equipment such as a cylinder increases the weight of the slide core, which causes problems such as an increase in the size of the drive mechanism for the slide core.

[0007] The present invention has been made in consideration of the problems existing in the conventional technology described above, and its purpose is to provide a die casting mold that uses a simple mechanism to prevent unintended movement of the float core when closing or opening the mold, which could lead to contact with the die cast product, causing scratches in the die cast product, or causing the casting machine to abnormally stop, thereby enabling improved quality and productivity of die cast products compared to the conventional technology. [Means for solving the problem]

[0008] The present invention will be described below. In order to facilitate understanding of the present invention, reference numbers in the accompanying drawings are given in parentheses, but the present invention is not limited to the illustrated forms.

[0009] The die-casting die (10) of the present invention comprises a fixed die (21), a movable die (31) capable of advancing and retreating in a mold closing / opening direction relative to the fixed die (21), a slide core (41) capable of moving in a direction intersecting the advancing and retreating direction of the movable die (31), and a float core (51) provided in a cavity (43) formed inside the slide core (41) and capable of moving in a direction having a predetermined angle with respect to the moving direction of the slide core (41), and is a die-casting die (10) that defines a cavity (61) by the fixed die (21), the movable die (31), the slide core (41), and the float core (51), and is characterized in that the die-casting die (10) comprises a positioning mechanism (45, 75) capable of positioning the float core (51) in the cavity (43) formed inside the slide core (41).

[0010] Furthermore, in the die-casting die (10) according to the present invention, the positioning mechanism (45) is configured to have at least a cylindrical body (46a) provided in the slide core (41), a pin member (46c) provided within the cylindrical body (46a) so as to be able to move back and forth within the cylindrical body (46a) while being spring-biased within the cylindrical body (46a), and a recess (54) provided in the float core (51). The pin member (46c) fits into the recess (54), thereby enabling the positioning of the float core (51) within the cavity (54).

[0011] Furthermore, in the die-casting die (10) according to the present invention, the positioning mechanism (75) is configured to include at least an electromagnet (75) provided on the slide core (41), and the electromagnet (75) generates a magnetic force to fix and hold the float core (51), thereby enabling the positioning of the float core (51) within the cavity (43).

[0012] Furthermore, in the die-casting die (10) according to the present invention, it is preferable that the float core (51) has a cooling passage (55) formed at an eccentric position shifted from the center of the cross section when viewed in a cross section perpendicular to the direction of movement within the cavity (43).

[0013] The present invention also includes a die casting method characterized in that die casting is carried out using the die casting mold (10) described above. Effect of the Invention

[0014] According to the present invention, it is possible to prevent, by a simple mechanism, the float core from coming into contact with the die-cast product due to unintended movement during mold closing or mold opening, etc., which may result in scratches on the die-cast product or an abnormal stop of the casting machine. Therefore, the die-casting mold of the present invention can improve the quality and productivity of die-cast products compared to the conventional technology. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing a schematic diagram of an overall configuration of a die-casting die according to an embodiment of the present invention, in a clamped state. [Diagram 2] FIG. 1 is a diagram showing a schematic diagram of an overall configuration of a die-casting die according to an embodiment of the present invention, in a state in which the die is opened. [Diagram 3] 3A and 3B are diagrams showing a detailed configuration of a pin mechanism part that constitutes the positioning mechanism according to the present embodiment, in which (a) shows a bottom view and (b) shows a cross section taken along line AA. [Figure 4] FIG. 2 is a cross-sectional view showing the cross section BB in FIG. [Diagram 5] FIG. 1 is a diagram for explaining the characteristics of the float core according to the present embodiment, in which (a) shows the state during casting, and (b) shows the state after casting has been completed. [Figure 6] FIG. 2 is a vertical cross-sectional view for explaining features of the float core according to the present embodiment. [Figure 7] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 8] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 9] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 10] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 11] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 12] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 13] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 14] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 15] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 16] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 17] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 18] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 19] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 20] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 21] 1A to 1C are diagrams for explaining steps of a die casting method carried out using a die casting die according to the present embodiment. [Figure 22]FIG. 11 is a diagram showing another example of a positioning mechanism provided in the die-casting die according to the present embodiment, in which (a) shows the state during casting, and (b) shows the state after casting has been completed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Preferred embodiments for carrying out the present invention will be described below with reference to the drawings. Note that the following embodiments do not limit the inventions according to the claims, and all of the combinations of features described in the embodiments are not necessarily essential to the solution of the invention.

[0017] First, the basic configuration of the die-casting die 10 according to the present embodiment will be described with reference to Figs. 1 and 2. Fig. 1 is a diagram showing the overall configuration of the die-casting die according to the present embodiment, and shows a state in which the die is clamped. Fig. 2 is a diagram showing the overall configuration of the die-casting die according to the present embodiment, and shows a state in which the die is opened. In the following description, on the paper surface of Figs. 1 and 2, the right direction is defined as the die opening direction, the left direction is defined as the die clamping direction, the upward direction is defined as the upward sliding direction, and the downward direction is defined as the downward sliding direction.

[0018] The die-casting die 10 according to this embodiment is configured to include a fixed die 21, a movable die 31, a slide core 41, and a float core 51.

[0019] 1 and 2, the fixed die 21 has a cavity forming surface 22 that forms part of the cavity 61 on the surface facing the movable die 31, the slide core 41, and the float core 51. The fixed die 21 also has a push rod 23 for pushing the float core 51 in the die opening direction when the die is opened. The push rod 23 is operable by a piston 25 provided in a hydraulic cylinder 24 installed in the fixed die 21, and is capable of reciprocating in both the die opening direction and the die clamping direction.

[0020] The movable die 31 can advance and retreat in both the mold clamping direction and the mold opening direction relative to the fixed die 21. As shown in Figs. 1 and 2, the movable die 31 has a cavity forming surface 32 that forms part of the cavity 61 on the surface facing the fixed die 21. The movable die 31 also has a pressing member 33 for pressing the float core 51, which will be described later. The pressing member 33 is a member that fixes the position of the float core 51 by pressing the float core 51 toward the fixed die 21 (i.e., the mold clamping direction) during casting. The pressing member 33 can be operated by a piston 35 provided in a hydraulic cylinder 34 installed in the movable die 31, and can reciprocate in both the mold opening direction and the mold clamping direction.

[0021] The movable die 31 also includes a pressing member stopper 36 for fixing the pressing member 33 during casting. The pressing member stopper 36 is a member that fixes the position of the pressing member 33 by sandwiching the pressing member 33 from above and below during casting. The pressing member stopper 36 is operable by a piston 35 provided in a hydraulic cylinder 34 installed in the movable die 31, and is reciprocatingly movable in both the upward and downward sliding directions.

[0022] The movable mold 31 is also equipped with a backstopper 37 for fixing the slide core 41 during casting. The backstopper 37 is a member that fixes the position of the slide core 41 by pushing the slide core 41 toward the fixed mold 21 (i.e., the mold clamping direction) during casting. The backstopper 37 is operable by a piston 35 provided in a hydraulic cylinder 34 installed in the movable mold 31, and is capable of reciprocating in both the mold opening direction and the mold clamping direction.

[0023] The movable die 31 also has an ejection pin 38. The ejection pin 38 is a member that functions to push out the die-cast product located on the cavity forming surface 32 of the movable die 31 and remove the product from the die-casting die 10 when the fixed die 21 and the movable die 31 are opened after casting is completed. When the fixed die 21 and the movable die 31 are opened after casting is completed, the ejection pin 38 moves in the die clamping direction to push out the die-cast product, and moves in the die opening direction to return to its initial position.

[0024] The movable die 31 also has a sensor 39 for detecting the position of the float core 51. For example, a distance sensor using a laser beam or the like can be used as the sensor 39. The float core 51 according to this embodiment has a detection plate 53 that is irradiated with a laser beam from the sensor 39, and the sensor 39 detects and measures the distance to the detection plate 53, thereby making it possible to grasp the position of the float core 51. By grasping the position of the float core 51 with the sensor 39, it is possible to control the operation of the die casting die 10 according to this embodiment, detect abnormalities, and the like.

[0025] The slide core 41 is a member that is movable in a direction intersecting the advancing and retreating direction of the movable die 31, and in this embodiment, is movable in an upward sliding direction and a downward sliding direction. The slide core 41 has a cavity forming surface 42 that forms a part of the cavity 61 on the surface facing the fixed die 21, as shown in Figures 1 and 2.

[0026] Furthermore, a cavity 43 is formed inside the slide core 41, and a float core 51 is installed inside this cavity 43. As described above, the float core 51 has a detection plate 53 that is irradiated with laser light from the sensor 39. Furthermore, the float core 51 has a cavity forming surface 52 that forms a part of the cavity 61 on the surface facing the fixed mold 21, as shown in Figures 1 and 2.

[0027] Furthermore, the float core 51 is capable of moving in a direction having a predetermined angle with respect to the up-down direction which is the movement direction of the slide core 41. Note that the float core 51 according to this embodiment is capable of reciprocating in both the mold opening direction and the mold closing direction which are directions perpendicular to the up-down direction which is the movement direction of the slide core 41.

[0028] With the above configuration, in the die casting die 10 according to this embodiment, the area surrounded by the cavity-forming surface 22 of the fixed die 21, the cavity-forming surface 32 of the movable die 31, the cavity-forming surface 42 of the slide core 41, and the cavity-forming surface 52 of the float core 51 defines a cavity 61, and a die casting product can be obtained by pouring a molten metal such as an aluminum alloy into this cavity 61. In particular, since the die casting die 10 according to this embodiment has the slide core 41 and the float core 51, it is possible to obtain a die casting product with a complex shape.

[0029] Although the basic configuration of the die-casting die 10 according to the present embodiment has been described above using FIG. 1 and FIG. 2, the die-casting die 10 according to the present embodiment has a further characteristic configuration. Therefore, the characteristic configuration of the die-casting die 10 according to the present embodiment will be described by adding FIG. 3 to FIG. 6 to the reference drawings. Here, FIG. 3 is a diagram showing a detailed configuration of a pin mechanism part constituting a positioning mechanism according to the present embodiment, in which the divided view (a) in the diagram shows a bottom view, and the divided view (b) shows an AA cross section. FIG. 4 is a diagram showing a BB cross section in FIG. 1. FIG. 5 is a diagram for explaining the characteristics of the float core according to the present embodiment, in which the divided view (a) in the diagram shows a state during casting, and the divided view (b) shows a state after casting is completed. FIG. 6 is a vertical cross-sectional view for explaining the characteristics of the float core according to the present embodiment.

[0030] 1 and 2, the die casting die 10 according to this embodiment is provided with a positioning mechanism 45 capable of positioning the float core 51 in the cavity 43 formed inside the slide core 41. This positioning mechanism 45 is composed of a pin mechanism 46 provided in the slide core 41 and a groove-like recess 54 formed in the float core 51.

[0031] As shown in Fig. 3, the pin mechanism 46 is composed of a cylindrical body 46a provided in the slide core 41, and a pin member 46c provided in the body 46a so as to be movable forward and backward while being biased by a spring 46b installed in the body 46a. More specifically, as is clear from comparing Figs. 1 to 3, the pin member 46c constituting the pin mechanism 46 is constantly pushed downward by receiving an elastic force from the spring 46b, and in the state of Fig. 1 where the pin member 46c and the float core 51 are not in contact (i.e., the state during casting), the lower tip of the pin member 46c protrudes into the cavity 43 formed inside the slide core 41 and does not restrain the float core 51.

[0032] On the other hand, when the mold is opened after casting is completed and the float core 51 moves in the mold opening direction, the lower end of the pin member 46c is fitted into the groove-shaped recess 54 formed in the float core 51 as shown in FIG. 2. In this state, the pin mechanism 46 restricts the movement of the float core 51 and positions it. Therefore, the positioning mechanism 45 according to this embodiment prevents the float core 51 from moving unintentionally in the cavity 43. In other words, according to this embodiment, the float core 51 does not move unintentionally in the cavity 43, which would cause the float core 51 to come into contact with the die-cast product, causing scratches on the die-cast product, or causing the casting machine to stop abnormally, as in the conventional technology, and the float core 51 can be positioned and fixed by a simple mechanism. Therefore, according to the die-casting die 10 according to this embodiment, it is possible to improve the quality and productivity of die-cast products compared to the conventional technology.

[0033] As shown in Fig. 4, it is preferable to provide a cooling passage 55 inside the float core 51 of this embodiment because it comes into contact with the molten metal that serves as a high-temperature heat source. As shown in Fig. 4, this cooling passage 55 may be a linear cooling passage 55a or a spiral cooling passage 55b. As a means for providing the cooling passage 55 having a complex shape as shown in Fig. 4 inside the float core 51, for example, a manufacturing technique using a 3D printer can be used.

[0034] 4, the float core 51 of this embodiment may be provided with a D-cut shape 56 that forms a horizontal plane in a cross-sectional view at an upper position. By forming such a D-cut shape 56, it is possible to prevent the float core 51 from rotating within the cavity 43, so that there is no misalignment in the circumferential direction between the lower end of the pin member 46c and the recess 54. Therefore, by forming the D-cut shape 56, it becomes possible to stably perform the positioning, fixing, and release of the float core 51 by the positioning mechanism 45.

[0035] Furthermore, the float core 51 according to this embodiment can be further improved as shown in Fig. 5 and Fig. 6. That is, as shown in Fig. 5, the float core 51 according to this embodiment has a die-cast product (cavity 61) that serves as a high-temperature heat source on the fixed mold 21 side and on the lower side, and no die-cast product (cavity 61) is present on the movable mold 31 side or on the upper side, whether during casting as shown in Fig. 5(a) or after casting as shown in Fig. 5(b). Therefore, the heat is received unevenly (see Fig. 6(a)), and as a result, the thermal deformation (thermal expansion) of the float core 51 also becomes uneven (the thermally expanded state is shown in Fig. 6(b)).

[0036] Here, keeping the clearance between the slide core 41 and the float core 51 constant leads to stable operation of the float core 51 and prevents unintended movement, but if uneven thermal expansion occurs in the float core 51, the clearance around the periphery of the float core 51 cannot be kept constant, which makes it more likely to malfunction. Therefore, in the float core 51 of this embodiment, the cooling passage 55 is formed at an eccentric position offset from the center of the cross section when viewed in a cross section perpendicular to the movement direction in the cavity 43. In other words, as shown in Fig. 6(c), by forming the cooling passage 55 eccentrically on the side of the die-cast product (cavity 61), which is a high-temperature heat source, uneven thermal expansion occurring in the float core 51 can be suppressed, and it is possible to realize stabilization of the clearance and stabilization of the operation of the float core 51.

[0037] The configuration of the die-casting die 10 according to this embodiment has been described above with reference to Figures 1 to 6. Next, the operation of the die-casting die 10 according to this embodiment will be described with reference to Figures 7 to 21. Here, Figures 7 to 21 are diagrams for explaining the steps of the die-casting method carried out using the die-casting die according to this embodiment.

[0038] FIG. 7 shows the state in which the die-casting mold 10 according to this embodiment is in a clamped state, with die-casting completed and cavity 61 filled with molten metal such as aluminum to cast a die-cast product.

[0039] As shown in Fig. 7, when the casting of the die-cast product is completed, the mold is opened. That is, as shown in Figs. 8 to 15, the piston 35 of the hydraulic cylinder 34 is operated, and the pressing member stopper 36 and the backstop stopper 37 perform a retracting operation, and the fixation of the slide core 41 and the pressing member 33 is released (Fig. 8). Then, the pressing member 33 that has been pressing the float core 51 is retracted (Fig. 9), and the push rod 23 is pushed out by the piston 25 of the hydraulic cylinder 24 installed in the fixed mold 21, and the float core 51 moves inside the cavity 43 toward the movable mold 31 (Fig. 10). At this time, the tip of the pin member 46c of the pin mechanism 46 fits into the recess 54 of the float core 51, so that the float core 51 is positioned and fixed inside the cavity 43.

[0040] Next, the push rod 23 retreats to the fixed mold 21 side (Fig. 11), and the movable mold 31 and the sliding core 41 move in the mold opening direction (Fig. 12). In the state shown in Fig. 12, the die-cast product moves in the mold opening direction together with the movable mold 31 and the sliding core 41. After that, the sliding core 41 moves upward (Fig. 13). Also, in the state shown in Fig. 13, the push pin 38 installed on the movable mold 31 moves to the fixed mold 21 side, and moves to a position where it can push the die-cast product toward the fixed mold 21 side.

[0041] Then, the ejector pin 38 moves further toward the fixed mold 21, pushing the die-cast product toward the fixed mold 21, removing the die-cast product from the movable mold 31 and enabling it to be removed from the die-casting mold 10 (FIG. 14). From the state shown in FIG. 14, the die-cast product is removed by operating a robot hand (not shown) or the like (FIG. 15). In this way, the series of operational steps shown in FIGS. 8 to 15 completes the mold opening operation of the die-casting mold 10 according to this embodiment.

[0042] After the mold opening operation shown in FIG. 15 is completed, a mold release agent or the like is sprayed and applied to the cavity forming surfaces 22, 32, 42, 52, etc., and then the mold closing operation shown in FIGS. 16 to 20 is started.

[0043] That is, the slide core 41 moves downward (Fig. 16), and the movable die 31 and slide core 41 move toward the fixed die 21 (Fig. 17). From the state shown in Fig. 17, the pressing member 33 moves toward the fixed die 21 and comes into contact with the float core 51 (Fig. 18), and then the pressing member 33 pushes out the float core 51, creating a state in which a cavity 61 is formed (Fig. 19). When moving from the state of Fig. 18 to the state of Fig. 19, the float core 51, which was positioned and fixed within the cavity 43, is released from the fitted state between the recess 54 of the float core 51 and the tip of the pin member 46c of the pin mechanism part 46 by the pressing member 33 being pushed out. Furthermore, the push rod 23 installed on the fixed mold 21 side is pushed out toward the movable mold 31 side and comes into contact with the end face of the float core 51 on the fixed mold 21 side, and the push rod 23 and the pressing member 33 work together to clamp the float core 51, thereby fixing the float core 51 (Figure 19).

[0044] Thereafter, the piston 35 of the hydraulic cylinder 34 is operated, and the pressing member stopper 36 and the retreat prevention stopper 37 perform a restraining operation, and the slide core 41 and the pressing member 33 are fixed (FIG. 20). The mold clamping operation is completed by the series of operations shown in FIGS. 16 to 20.

[0045] Molten metal such as aluminum is introduced into cavity 61 from the state shown in Fig. 20, and a die-cast product is cast (Fig. 21). Thereafter, by repeatedly executing the series of operation steps shown in Figs. 8 to 21, mass production of die-cast products becomes possible.

[0046] Although the preferred embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above embodiments. Various modifications and improvements can be made to the above embodiments.

[0047] For example, in the above embodiment, the positioning mechanism according to the present invention has been described as the positioning mechanism 45 composed of the pin mechanism 46 installed in the slide core 41 and the groove-shaped recess 54 formed in the float core 51, but various modifications can be adopted for the positioning mechanism according to the present invention. For example, FIG. 22 is a diagram showing another embodiment of the positioning mechanism 45 provided in the die-casting die 10 according to the present embodiment, in which the sub-diagram (a) shows the state during casting, and the sub-diagram (b) shows the state after casting is completed. As shown in FIG. 22, an electromagnet 75 can be adopted as the positioning mechanism according to the present invention. That is, the electromagnet 75 is provided in the slide core 41, and the electromagnet 75 turns on the magnetic force to fix and hold the float core 51, or turns off the magnetic force to release the hold, thereby performing positioning and release of the float core 51 in the cavity 43. The embodiment shown in FIG. 22 can also provide the same effects as the above embodiment.

[0048] Also, for example, in the above-described embodiment, the slide core 41 is movable in a direction intersecting the advancing and retracting direction of the movable die 31, i.e., in the vertical direction, and the float core 51 is movable in a direction perpendicular to the vertical direction which is the moving direction of the slide core, i.e., in the horizontal direction. However, in the die casting die of the present invention, the movable directions of the slide core and the float core can be set to any angle direction.

[0049] It will be apparent from the description of the claims that such modified or improved forms may also be included within the technical scope of the present invention. [Explanation of symbols]

[0050] 10 die casting die, 21 fixed die, 22 cavity forming surface, 23 push rod, 24 hydraulic cylinder, 31 movable die, 32 cavity forming surface, 33 holding member, 34 hydraulic cylinder, 35 piston, 36 holding member stopper, 37 backstop stopper, 38 push pin, 39 sensor, 41 slide core, 42 cavity forming surface, 43 cavity, 45 positioning mechanism, 46 pin mechanism part (positioning mechanism), 46a cylinder (positioning mechanism), 46b spring (positioning mechanism), 46c pin member (positioning mechanism), 51 float core, 52 cavity forming surface, 53 detection plate, 54 recess (positioning mechanism), 55 cooling passage, 55a linear cooling passage, 55b spiral cooling passage, 56 D-cut shape, 61 cavity, 75 Electromagnet (positioning mechanism).

Claims

1. Fixed type and a movable die that can advance and retreat in a mold clamping / mold opening direction relative to the fixed die; a slide core movable in a direction intersecting the advancement and retreat direction of the movable die; a float core provided in a cavity formed inside the slide core and movable in a direction having a predetermined angle with respect to a moving direction of the slide core; Equipped with A die casting mold defining a cavity by the fixed die, the movable die, the slide core, and the float core, A die casting die comprising: a positioning mechanism capable of positioning the float core within the cavity formed inside the slide core.

2. The die casting mold according to claim 1, The positioning mechanism includes: A cylinder provided on the slide core; a pin member provided within the cylindrical body so as to be capable of moving forward and backward within the cylindrical body while being biased by a spring; A recess provided in the float core; The present invention is configured to include at least A die casting die, characterized in that the float core is positioned within the cavity by the pin member fitting into the recess.

3. The die casting mold according to claim 1, The positioning mechanism includes at least an electromagnet provided on the slide core, The electromagnet generates a magnetic force to fix and hold the float core, thereby positioning the float core within the cavity.

4. The die casting mold according to claim 1, A die casting mold characterized in that a cooling passage is formed in the float core at an eccentric position shifted from the center of the cross section when viewed in a cross section perpendicular to the movement direction within the cavity.

5. A die casting method, comprising the steps of: performing die casting using the die casting mold according to any one of claims 1 to 4.

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