JP2020049807A - Mold device - Google Patents

Abstract

To provide a mold device capable of positioning a cassette mold in a holder mold stably in a simple configuration.SOLUTION: A mold device is provided with: a cassette mold 200 attachably/detachably mounted on a holder mold 304 of a movable mold MM; and a positioning member 11 for positioning the cassette mold 200. The holder mold 304 has a reference surface 22 and a first slanted surface 23 slanting in a direction toward the reference surface 22. The cassette mold 200 has a first side surface 61 parallelly facing the reference surface 22, and a second side surface 62 facing the first slanted surface 23. The positioning member 11 has a pressing surface parallelly facing the second side surface 62, and a second slanted surface 13 parallelly facing the first slanted surface 23. When the positioning member is installed on the holder mold 304, the second slanted surface 13 comes into contact with the first slanted surface 23, and the pressing surface comes into contact with the second side surface 62 to press the first side surface 61 onto the reference surface 22.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mold device.

  In the case of injection molding, etc., since it is excellent in low-volume production and maintenance, it is equipped with a cassette type mold (hereinafter referred to as a cassette type) having a product molding part, and a cassette type is detachably mounted in a concave portion. A mold apparatus having a mold base having a holder mold is known.

  When a cassette mold is mounted on a holder mold to form a precision part, positioning of the cassette mold with respect to the holder mold is important in terms of accuracy. As the positioning of the cassette type with respect to the holder type, for example, a method is employed in which the side surface of the cassette type is brought into contact with a reference surface facing the concave portion of the holder type.

  In this case, in order to position the cassette mold with respect to the holder mold with high accuracy, it is necessary to reduce the gap between the holder mold and the cassette mold. On the other hand, if the gap between the holder mold and the cassette mold is small, there is a problem that workability is reduced and it takes time to attach and detach the cassette mold to and from the holder mold.

  Therefore, for example, Patent Document 1 includes a clamp unit having a cam and a clamp driving unit having a cylinder, and the cam is driven by the cylinder to press the cassette mold toward the reference surface of the holder mold. A technique for positioning a cassette type on a holder type is disclosed.

JP-A-2002-052574

  However, in the above-described related art, the structure is complicated because a cylinder, a cam, and the like are used, and there is a possibility that a problem may occur in terms of reproducibility, cost, and the like. In particular, the cam described in Patent Literature 1 is driven only in one oblique direction intersecting the normal direction of each of the two reference planes with respect to the two reference planes.

  The present invention has been made in consideration of the above points, and has as its object to provide a mold apparatus capable of stably positioning a cassette mold on a holder mold with a simple configuration.

  One aspect of the mold apparatus of the present invention is a fixed mold, a movable mold that is relatively movable with respect to the fixed mold, and at least one of the fixed mold and the movable mold, including the movable mold. A cassette type removably mounted on the holder type, and a positioning member provided on the holder type to press and position the cassette type against the holder type, wherein the holder type includes the fixed type and the movable type. A concave portion provided on a surface facing the other die with respect to the other die; and a perpendicularly provided from an end of a bottom surface of the concave portion in a first direction orthogonal to the relative movement direction to the other die side in the relative movement direction. And the reference surface is opposed to the reference surface via the recess in the first direction, and is inclined with respect to the reference surface in a direction toward the reference surface as going from the facing surface to the bottom surface. The first slope Wherein the cassette type has a first side surface facing in parallel with the reference surface when placed on the bottom surface of the concave portion, and a second side surface facing the first inclined surface. The member has a pressing surface that faces in parallel with the second side surface, and a second inclined surface that faces in parallel with the first inclined surface, and when attached to the holder mold, the second inclined surface. A surface contacts the first inclined surface, and the pressing surface contacts the second side surface to press the first side surface against the reference surface.

  According to the present invention, it is possible to provide a mold device capable of stably positioning a cassette mold to a holder mold with a simple configuration.

FIG. 1 is a sectional perspective view showing the mold apparatus 1 cut along a plane including the central axis J. FIG. 2 is an external perspective view of the cassette type 200 according to the present embodiment. FIG. 3 is a sectional view of the movable MM cut along a plane parallel to the XZ plane including the central axis J. FIG. 4 is a plan view of the movable MM viewed from the PL side. FIG. 5 is a partial cross-sectional view in which the vicinity of the concave portion 20 in FIGS. 1 and 3 is enlarged. FIG. 6 is an enlarged partial cross-sectional view of the vicinity of the recess 20 in FIGS. 1 and 3. FIG. 7 is a partial cross-sectional view in which the periphery of the concave portion 20 shown in FIGS. 5 and 6 is cut along a plane parallel to the YZ plane and enlarged.

  Hereinafter, a mold device according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that the scope of the present invention is not limited to the following embodiment, and can be arbitrarily changed within the technical idea of the present invention. Further, in the following drawings, in order to make each configuration easy to understand, the scale and the number of the actual structure may be different from those of the actual structure.

  FIG. 1 is a sectional perspective view showing the mold apparatus 1 cut along a plane including the central axis J. As shown in FIG. 1, the mold apparatus 1 of the present embodiment includes a mold base MB and a cassette mold 200.

  The mold base MB includes a fixed type FM and a movable type MM. The movable type MM moves relative to the fixed type FM in the direction of the central axis J facing the fixed type. The direction in which the central axis J extends is the direction in which the fixed type FM and the movable type MM face each other. The position of the central axis J is a direction in which a plurality of plate members (details will be described later) configuring the fixed type FM and the movable type MM are stacked. The central axis J is located on the intersection of the diagonal lines of the above-mentioned plate member having a rectangular shape in plan view. The position of the central axis J is the position of the center of the mold where a nozzle (not shown) for supplying the molten material in the molding machine comes into contact. In the present embodiment, a description will be given of a mold apparatus 1 in which two cassette molds 200 are detachably mounted. However, the drawing shows a state in which only one of the two cassette types 200 is mounted on the mold base MB.

  Hereinafter, in the drawings, an XYZ coordinate system is appropriately shown as a three-dimensional orthogonal coordinate system. In the XYZ coordinate system, the Z-axis direction is a direction parallel to the axial direction of the central axis J shown in FIG. The X-axis direction (first direction) is a direction orthogonal to the Z-axis direction and is the left-right direction (cross-sectional direction) in FIG. The Y-axis direction (second direction) is a direction orthogonal to both the X-axis direction and the Z-axis direction. In the following, the surface side where the fixed type FM and the movable type MM come into contact is referred to as a PL (parting line) side, and the side opposite to the PL side is appropriately referred to as an anti-PL side.

[Cassette type 200]
First, the cassette type 200 will be described.
The cassette type 200 is detachably mounted on the movable type MM. FIG. 2 is an external perspective view of the cassette type 200. FIG. The cassette type 200 includes a nesting type plate 204, a receiving plate 205, a pair of spacers 206, a protruding holding plate 207, a protruding plate 208, and a supporting plate 209 sequentially arranged from the PL side.

  The insert mold plate 204 has a part of a surface constituting a cavity that is a space in which a molded product is molded. The upper surface 204A on the + Z side of the insert mold plate 204 that does not face the cavity is a parting surface that comes into contact with the fixed mold FM. The nesting type plate 204 has, as an example, a rectangular parallelepiped shape as viewed in the Z direction. The insert mold plate 204 includes a side surface (first side surface) 61 and a side surface (second side surface) 62 parallel to the YZ plane, a side surface (third side surface) 63 and a side surface (fourth side surface) 64 parallel to the XZ plane. Having. The side surfaces 61 to 64 are surfaces used for positioning the mold base MB with the movable mold MM.

  The receiving plate 205 has a rectangular parallelepiped shape as viewed in the Z direction. The receiving plate 205 is arranged on the side opposite to the PL of the nesting plate 204. The receiving plate 205 is in contact with the lower surface 204B on the −Z side of the insert mold plate 204 to support the insert mold plate 204 from the side opposite to the PL. The −X side surface of the receiving plate 205 is located on the + X side of the side surface 61 of the telescopic plate 204. The side surface on the + X side of the receiving plate 205 is located on the −X side of the side surface 62 of the telescopic plate 204. The side surface on the −Y side of the receiving plate 205 is located on the + Y side of the side surface 63 of the telescopic plate 204. The side surface on the + Y side of the receiving plate 205 is located on the −Y side of the side surface 64 of the nesting plate 204. That is, when viewed in the Z direction, the telescopic plate 204 is larger than the receiving plate 205 in both the X and Y directions. The lower surface 204B of the insert mold plate 204 is exposed on the −Z side in both the X direction and the Y direction.

  The lower surface 204B of the insert mold plate 204 exposed on the −Z side is placed in contact with the bottom surface 21 of the concave portion 20 of the holder mold 304 described later (see FIG. 3). The insert mold plate 204 is fastened and fixed to the holder mold 304 from the PL side by a plurality of bolts B1 arranged in a region where the lower surface 204B and the bottom surface 21 are in contact with each other (see FIGS. 2 and 4).

  The pair of spacers 206 are arranged on the opposite side of the receiving plate 205 from the PL. The pair of spacers 206 are arranged at intervals in the Y direction. The length of the pair of spacers 206 in the Z direction is the same. Each side surface exposed to the outside of the pair of spacers 206 is flush with the receiving plate 205.

  The support plate 209 is arranged on the opposite side of the pair of spacers 206 from the PL. Each side surface of the support plate 209 is flush with the receiving plate 205. As shown in FIG. 1, the support plate 209 has a through hole 209A penetrating in the Z direction at a center position in the Z direction. The receiving plate 205, the pair of spacers 206, and the support plate 209 are positioned integrally in the X direction and the Y direction, and are integrally fixed by bolts (not shown). The receiving plate 205 is positioned integrally with the nesting plate 204 in the X direction and the Y direction, and is integrated by being fastened and fixed by a plurality of bolts B2.

  The projecting holding plate 207 and the projecting plate 208 are sequentially arranged between the pair of spacers 206 from the PL side. Each of the protruding holding plate 207 and the protruding plate 208 has a rectangular shape when viewed in the Z direction. The protruding holding plate 207 and the protruding plate 208 are provided integrally along the Z direction via spacers 210 arranged at four corners of the XY plane. The protruding holding plate 207 and the protruding plate 208 in a region other than where the spacer 210 is provided are arranged with a gap therebetween. The protruding holding plate 207 and the protruding plate 208 can be integrally moved in the Z direction with respect to the telescopic plate 204, the receiving plate 205, the pair of spacers 206, and the support plate 209.

  The head portion of the first ejector pin E1 is held in the gap between the protrusion holding plate 207 and the protrusion plate 208. Each of the protruding holding plate 207, the receiving plate 205, and the telescopic plate 204 is provided with a through hole (not shown) penetrating in the Z direction at a position on the XY plane where the first ejector pin E1 is disposed. I have. The first ejector pin E1 sequentially passes through through holes provided in each of the protruding holding plate 207, the receiving plate 205, and the telescopic plate 204. The distal end of the first ejector pin E1 faces a cavity in the insert mold plate 204. As the protrusion holding plate 207 and the protrusion plate 208 move to the PL side in the Z direction, the first ejector pin E1 moves to the PL side in the Z direction. The movement of the first ejector pin E1 in the Z direction is guided by respective through holes of the projecting holding plate 207, the receiving plate 205, and the nesting plate 204. The protruding holding plate 207 and the protruding plate 208 constitute a first ejector type that can hold the first ejector pin E1 and move in the Z direction. When the first ejector pin E1 moves to the PL side, the molded product molded in the cavity is released from the insert mold plate 204.

  The above-mentioned cassette type 200 is mounted on the movable type MM by fastening the bolt B1 and fixing the nesting type plate 204 to the holder type 304. The cassette type 200 can be detached from the movable type MM by releasing the fastening of the bolt B1.

FIG. 3 is a cross-sectional view of the movable MM cut along a plane parallel to the XZ plane including the central axis J.
As shown in FIG. 3, a compression spring 211 such as a coil spring, which can expand and contract in the Z direction, is provided between the receiving plate 205 and the protrusion holding plate 207 in a compressed state. Due to the elastic restoring force of the compression spring 211, the protruding holding plate 207 and the protruding plate 208 are pushed to the opposite side of the PL and pressed against the support plate 209. The distance in the Z direction between the receiving plate 205 and the projecting holding plate 207 is the maximum stroke in which the projecting holding plate 207 and the projecting plate 208 can move in the Z direction. At the position where the protruding holding plate 207 and the protruding plate 208 are pressed against the support plate 209, the distal end surface of the first ejector pin E1 forms a part of the cavity. Although FIG. 2 illustrates the configuration in which one first ejector pin E1 is provided, one or more first ejector pins E1 are arranged in a number and an arrangement in consideration of the mold release resistance of the molded product.

[Mold base MB; Fixed type FM]
Subsequently, the fixed type FM of the mold base MB will be described.
The fixed type FM is mounted on a fixed platen of a molding machine. The fixed type FM has a mounting plate 301, a runner protruding plate 302, and a template plate 303 which are sequentially arranged from a side farther from the movable type MM than the PL. The fixed type FM is a sleep rate type having three plate members. The fixed type FM may be a two-plate type having two plate members.

  The mounting plate 301 is mounted on a fixed plate of the molding machine. The mounting plate 301 has a spool bush 311 to which the molten material is supplied by contacting the nozzle of the molding machine on the side opposite to the PL. The runner protruding plate 302 and the template 303 are movable in the Z direction with their relative positions in the X and Y directions fixed relative to the mounting plate 301, respectively. The fixed type FM has a support member such as a shaft member and a guide bush that movably supports the runner protruding plate 302 and the template plate 303 in the Z direction with respect to the mounting plate 301. Illustration is omitted.

  The template 303 has two through holes 312A and 312B penetrating in the Z direction. As an example, the through holes 312A and 312B are each rectangular when viewed in the Z direction. The through holes 312A and 312B are arranged apart from each other in the X direction. The through holes 312A and 312B are arranged symmetrically about a line extending in the Y direction that intersects the central axis J.

  The template 303 has a depression 313 that opens on the side opposite to the PL. The depression 313 has a size including both the through holes 312A and 312B. A support plate 314 is fixed to the depression 313. The PL-side surface of the support plate 314 contacts the bottom surface of the depression. The surface of the supporting plate 314 on the side opposite to the PL is flush with the surface of the template 303 on the side opposite to the PL.

  Nesting plates 315A, 315B are inserted into through holes 312A, 312B. However, the illustration of the insert type 315B is omitted as in the case of the cassette type 200. The nesting types 315A and 315B are fixed to the support plate 314 from the side opposite to the PL. The nesting dies 315A and 315B have nesting dies 204A and 204B of the cassette mold 200 to be described later and a part of a cavity that is a space for molding a molded product. Each of the nesting molds 315A and 315B has a gate for introducing a molten material into the cavity.

[Mold base MB; movable MM]
Next, the movable MM of the mold base MB will be described.
The movable MM is attached to a movable plate of a molding machine. The movable MM integrally moves in the Z direction according to the movement of the movable platen. The movable type MM has a holder die 304, a pair of spacers 305, a support plate 306, a protruding holding plate 307, a protruding plate 308, and a mounting plate 309 sequentially arranged from the PL side. The holder mold 304, the pair of spacers 305, the support plate 306, and the mounting plate 309 are in a state of being integrally fixed. The extension holding plate 307 and the protruding plate 308 are integrally movable in the Z direction.

FIG. 4 is a plan view of the movable MM viewed from the PL side.
As shown in FIGS. 3 and 4, the holder die 304 has a concave portion 20, a through hole 315, a positioning member 11, a positioning member (second positioning member) 41, a first holder member 51, and a second holder member 52. ing. The positioning member 11, the positioning member (second positioning member) 41, the first holder member 51, and the second holder member 52 are provided in the recess 20.

  The recess 20 is provided on a surface 304 </ b> A of the holder mold 304 facing the fixed mold FM. The concave portions 20 are disposed at two locations line-symmetrically with respect to a center line CL passing through the center axis J and extending in the Y direction. FIG. 4 shows a state in which the cassette type 200 is mounted only in the concave portion 20 on the + X side of the two concave portions 20. Hereinafter, the concave portion 20 arranged on the + X side of the two concave portions 20 will be described.

  Each recess 20 is L-shaped in plan view. The recess 20 is a space surrounded by a bottom surface 21, a reference surface 22, a reference surface (second reference surface) 32, and auxiliary surfaces 25 and 26. The depth of the recess 20 is the same as or smaller than the thickness of the nesting plate 204. When the depth of the concave portion 20 is smaller than the thickness of the nesting plate 204, as an example, it is preferable that the upper surface 204 </ b> A of the nesting plate 204 protrude from the facing surface 304 </ b> A of the holder mold 304 by about several tens μm.

  The reference plane 22 is parallel to the YZ plane, and is provided vertically from the −X side end of the bottom surface 21. The reference plane 22 extends in the Y direction. The reference surface 22 faces in parallel with the side surface 61 when the nesting plate 204 is placed on the bottom surface 21 of the concave portion 20. The nesting mold plate 204 is positioned in the X direction with respect to the holder mold 304 when the side surface 61 is pressed against the reference surface 22.

  The reference plane 32 is parallel to the XZ plane, and is provided vertically from the −Y side end of the bottom surface 21. The reference plane 32 extends in the X direction. The reference surface 32 faces the side surface 63 in parallel when the nesting plate 204 is placed on the bottom surface 21 of the concave portion 20. The insert mold plate 204 is positioned with respect to the holder mold 304 in the Y direction when the side surface 63 is pressed against the reference surface 32.

  The distance in the Z direction between the lower surface 304B on the side opposite to the PL of the holder die 304 and the bottom surface 21 is the same as the receiving plate 205 of the cassette die 200. A through hole 315 is opened in the bottom surface 21. The through hole 315 penetrates the holder mold 304 in the Z direction. The cross section of the through hole 315 is rectangular. The distance in the X direction from the reference surface 22 to the inner surface on the −X side of the through hole 315 is smaller than the distance from the side surface 61 of the insert mold plate 204 in the cassette mold 200 to the −X side surface of the receiving plate 205. . The distance in the X direction from the reference surface 22 to the inner surface on the + X side of the through hole 315 is larger than the distance from the side surface 61 of the nesting plate 204 of the cassette mold 200 to the + X side surface of the receiving plate 205. The distance in the Y direction from the reference surface 32 to the inner surface on the −Y side of the through hole 315 is smaller than the distance from the side surface 63 of the nesting plate 204 in the cassette mold 200 to the −Y side surface of the receiving plate 205. . The distance in the Y direction from the reference surface 32 to the inner surface on the + Y side of the through-hole 315 is larger than the distance from the side surface 63 of the nesting plate 204 of the cassette type 200 to the + Y side surface of the receiving plate 205.

  Therefore, when viewed in the Z direction, the through hole 315 is larger than the receiving plate 205 in both the X direction and the Y direction. The side surface 61 of the nesting plate 204 is brought into contact with the reference surface 22, and the side surface 66 of the nesting plate 204 is brought into contact with the reference surface 32, and the cassette mold 200 is positioned on the holder mold 304 in both the X and Y directions. Then, the receiving plate 205 is inserted into the through hole 315 in a non-contact manner.

  The auxiliary surface 25 is parallel to the YZ plane, and is provided vertically from the + X side end of the bottom surface 21. The auxiliary surface 25 faces the reference surface 22 via the recess 20 in the X direction. The auxiliary surface 26 is parallel to the XZ plane, and is provided vertically from the + Y side end of the bottom surface 21. The auxiliary surface 25 faces the reference surface 32 via the recess 20 in the Y direction.

  5 and 6 are partial cross-sectional views in which the vicinity of the recess 20 in FIGS. 1 and 3 is enlarged. As shown in FIG. 5, in the second holder member 52, the lower surface 52a located on the -Z side and the top surface 52c located on the + Z side are parallel, and the lower surface 52a and the side surface 52b located on the + X side are orthogonal to each other. At the same time, the side surface 52b and the top surface 52c have a trapezoidal cross-sectional shape orthogonal to each other. As shown in FIG. 4, the second holder member 52 has a rectangular column shape extending in the Y direction. As an example, the second holder member 52 is fastened and fixed to the holder mold 304 from the PL side at three places by bolts B3. The second holder member 52 is positioned in the X direction with respect to the holder mold 304 when the lower surface 52a contacts the bottom surface 21 of the concave portion 20 and the + X side surface 52b contacts the auxiliary surface 25.

  The thickness of the second holder member 52 in the Z direction is smaller than the thickness of the nesting plate 204. The top surface 52c of the second holder member 52 is located on the −Z side of the facing surface 304A of the holder mold 304. Since the top surface 52c of the second holder member 52 is located on the −Z side with respect to the facing surface 304A, the top surface 52c comes into contact with the fixed type FM, and is constituted by the nested plate 204 and the fixed type FM. A situation in which the cavity is not sealed can be avoided.

  The second holder member 52 has a first inclined surface 23 at a position on the −X side. The first inclined surface 23 faces the reference surface 22 in the X direction via the recess 20. The first inclined surface 23 is inclined with respect to the YZ plane in a direction toward the reference surface 22 from the opposite surface 304A toward the bottom surface 21.

  The positioning member 11 is such that the lower surface 11a and the top surface 11b located on the -Z side are parallel to each other, and the lower surface 11a and the pressing surface 12 which is a side surface located on the -X side are orthogonal to each other. The top surface 11b has a trapezoidal cross section orthogonal to each other. The pressing surface 12 is parallel to the YZ plane. As shown in FIG. 4, the positioning member 11 has a rectangular column shape extending in the Y direction. The positioning member 11 is fastened and fixed to the holder mold 304 from three sides, for example, at three places by bolts B4.

  The thickness of the positioning member 11 in the Z direction is smaller than the thickness of the nesting plate 204. The top surface 11b of the positioning member 11 is located on the −Z side of the facing surface 304A of the holder die 304. Since the top surface 11b of the positioning member 11 is located on the −Z side of the facing surface 304A, the top surface 11b comes into contact with the fixed type FM, and the cavity formed by the nested plate 204 and the fixed type FM is formed. The situation that is not sealed can be avoided.

  The positioning member 11 has a second inclined surface 13 at a position on the + X side. When the positioning member 11 is located in the recess 20, the second inclined surface 13 faces in parallel with the first inclined surface 23, and the pressing surface 12 faces the side surface 62 of the telescopic plate 204.

  The length of the lower surface 11a of the positioning member 11 in the X direction is the bottom surface in a state where the side surface 61 of the nesting plate 204 is in contact with the reference surface 22 and the side surface 52b of the second holder member 52 is in contact with the auxiliary surface 25. 21 is defined by the distance between the side surface 62 of the nesting plate 204 and the first inclined surface 23. It is preferable that the length of the lower surface 11 a of the positioning member 11 in the X direction is slightly larger than the distance between the side surface 62 of the nested plate 204 on the bottom surface 21 and the first inclined surface 23.

  As shown in FIG. 6, the positioning member 11 in which the length of the lower surface 11 a in the X direction is slightly larger than the distance between the side surface 62 of the nested mold plate 204 on the bottom surface 21 and the first inclined surface 23 is inserted. When inserted between the template 204 and the second holder member 52 and fixed to the bottom surface 21 with the bolts B4, the positioning member 11 is press-fitted between the nested template 204 and the second holder member 52.

  When the positioning member 11 is press-fitted, the load accompanying the press-fit is transmitted to the first inclined surface 23 of the second holder member 52 via the second inclined surface 13, and a vertical drag is generated in a direction corresponding to the inclination angle. The component force in the X direction of the normal force is transmitted to the positioning member 11. In the positioning member 11 to which the component force has been transmitted, the pressing surface 12 is pressed against the side surface 62 of the insert mold plate 204, and the side surface 61 is pressed against the reference surface 22. The insert mold plate 204 is positioned in the X direction by the holder mold 304 when the side surface 61 is pressed against the reference surface 22.

  When the positioning member 11 is inserted between the nesting plate 204 and the second holder member 52 and fixed to the bottom surface 21 with the bolts B4, the bolts B3 of the second holder members 52 are fully tightened in advance and the holder It is firmly fixed to the mold 304, and the nested mold plate 204 is temporarily tightened with the bolt B1 to facilitate movement in the X direction. By temporarily tightening the bolts B1 of the insert mold plate 204, the side surface 61 can be effectively pressed against the reference surface 22 by the component force in the X direction.

  In the mold apparatus 1 of the present embodiment, the positioning member 11 having the second inclined surface 13 is inserted and fixed between the second holder member 52 having the first inclined surface 23 and the nesting plate 204. With this simple configuration, the insert mold plate 204 (that is, the cassette mold 200) can be stably positioned with respect to the holder mold 304. When detaching the insert mold plate 204 (that is, the cassette mold 200) from the holder mold 304, the bolt B4 is loosened and taken out from the concave portion 20 or is separated from the bottom surface 21 so as to move to the reference surface 22 of the insert mold plate 204. Is released. Therefore, the insert mold plate 204 (that is, the cassette mold 200) can be easily separated from the holder mold 304.

  In the mold apparatus 1 of the present embodiment, since the reference surface 22 is disposed on the center line CL side and the second holder member 52 and the positioning member 11 are disposed outside, the positioning member 11 is operated from outside. The distance to the work area when positioning the insert mold plate 204 in the X direction is short, and workability is improved. In particular, even when the mold apparatus 1 is fixed to the molding machine and the work space is narrow, the work of positioning the cassette mold 200 in the X direction and the work of detaching the cassette mold 200 from the holder mold 304 can be easily performed, and the maintainability is improved. Since the two cassette molds 200 and the concave portion 20 are arranged symmetrically about the center line CL and the reference surface 22 is arranged on the center side, the force for pressing one cassette mold 200 against the reference surface 22 and the other Is pressed against the reference surface 22. Therefore, in the mold apparatus 1 of the present embodiment, it is possible to prevent the balance in the X direction from being lost due to the force at the time of positioning the two cassette molds 200. Further, in the mold apparatus 1 of the present embodiment, since the work of positioning the cassette mold 200 in the X direction and the work of detaching the cassette mold 200 from the holder mold 304 can be performed from the PL side, the disassembly work of the movable mold MM becomes unnecessary. Workability is greatly improved.

  Since the second holder member 52 has the first inclined surface 23, even if the first inclined surface 23 is damaged, the second holder member 52 is replaced or repaired, thereby easily coping with it and improving the maintainability. . Since the replacement or repair of the second holder member 52 can be dealt with by loosening the bolt B3 from the PL side, workability is improved.

  The first inclined surface 23 may not be provided on the second holder member 52 but may be provided on the holder die 304. In the case where the first inclined surface 23 is provided on the holder die 304, it is not necessary to use the second holder member 52, and the number of components can be reduced.

  The angle at which the first inclined surface 23 and the second inclined surface 13 are inclined with respect to the YZ plane is preferably, for example, 1 ° or more and 10 ° or less. For example, when the length of the lower surface 11a in the X direction is larger than the specified value and the lower surface 11a does not contact the bottom surface 21 due to a manufacturing error or the like, the position of the top surface 11b in the Z direction varies. As an example, when the inclination angle of the first inclined surface 23 and the second inclined surface 13 is less than 1 ° and the length of the lower surface 11a in the X direction is longer than the specified value by L (μm), the position of the top surface 11b in the Z direction. Moves about 57 × L (μm) to the + Z side from the specified position. Therefore, depending on the error amount L (μm), the top surface 11b may protrude to the + Z side from the facing surface 304A of the holder die 304 and come into contact with the fixed die FM, and the cavity may not be sealed at the time of molding.

  On the other hand, when the inclination angles of the first inclined surface 23 and the second inclined surface 13 exceed 10 °, the component force in the X direction is reduced, and the side surface 61 of the nesting plate 204 is sufficiently pressed against the reference surface 22. Power may not be able to be secured. Therefore, the angle at which the first inclined surface 23 and the second inclined surface 13 are inclined with respect to the YZ plane is preferably 1 ° or more and 10 ° or less.

  By using the second holder member 52 and the positioning member 11 described above, the insert mold plate 204 is positioned in the X direction with respect to the holder die 304, whereas the first holder member 51 and the positioning member 41 are used. Thus, the insert mold plate 204 can be positioned with respect to the holder mold 304 in the Y direction. The first holder member 51 has the same configuration as the second holder member 52, and the positioning member 41 has the same configuration as the positioning member 11, so that the nesting plate 204 is hereinafter referred to as a holder type. The configuration for positioning in the Y direction with respect to 304 will be described briefly.

  FIG. 7 is an enlarged partial cross-sectional view of the periphery of the recess 20 shown in FIGS. 5 and 6 cut along a plane parallel to the YZ plane. As shown in FIG. 7, in the first holder member 51, the lower surface 51a located on the −Z side and the top surface 51c located on the + Z side are parallel, and the lower surface 51a and the side surface 51b located on the + Y side are orthogonal to each other. At the same time, the side surface 51b and the top surface 51c have a trapezoidal cross-sectional shape orthogonal to each other. The first holder member 51 has a rectangular column shape extending in the X direction. The first holder member 51 is fastened and fixed to the holder mold 304 from the PL side by bolts B5. The first holder member 51 is positioned with respect to the holder die 304 in the Y direction by the lower surface 51 a contacting the bottom surface 21 of the concave portion 20 and the side surface 51 b on the + Y side contacting the auxiliary surface 26.

  The thickness of the first holder member 51 in the Z direction is smaller than the thickness of the nesting plate 204. The top surface 51c of the first holder member 51 is located on the −Z side with respect to the facing surface 304A of the holder mold 304. Since the top surface 51c of the first holder member 51 is located on the −Z side of the facing surface 304A, the top surface 51c comes into contact with the fixed type FM, and is constituted by the nested plate 204 and the fixed type FM. A situation in which the cavity is not sealed can be avoided.

  The first holder member 51 has a third inclined surface 33 at a position on the −Y side. The third inclined surface 33 faces the reference surface 32 in the Y direction via the concave portion 20. The third inclined surface 33 is inclined with respect to the XZ plane in a direction toward the reference surface 32 from the facing surface 304A toward the bottom surface 21.

  In the positioning member 41, the lower surface 41a and the top surface 41b located on the -Z side are parallel, and the lower surface 41a and the pressing surface (second pressing surface) 42 which is a side surface located on the -Y side are orthogonal to each other. In addition, the pressing surface 42 and the top surface 41b have a trapezoidal cross-sectional shape orthogonal to each other. The pressing surface 42 is parallel to the XZ plane. The positioning member 41 has a rectangular column shape extending in the X direction. The positioning member 41 is fastened and fixed to the holder mold 304 from the PL side by bolts B6.

  The thickness of the positioning member 41 in the Z direction is smaller than the thickness of the nesting plate 204. The top surface 41b of the positioning member 41 is located on the −Z side of the facing surface 304A of the holder die 304. Since the top surface 41b of the positioning member 41 is located on the −Z side of the facing surface 304A, the top surface 41b comes into contact with the fixed type FM, and the cavity formed by the nested plate 204 and the fixed type FM is formed. The situation that is not sealed can be avoided.

  The positioning member 41 has a fourth inclined surface 43 at a position on the + Y side. When the positioning member 41 is located in the concave portion 20, the fourth inclined surface 43 faces in parallel with the third inclined surface 33, and the pressing surface 42 faces the side surface 64 of the telescopic plate 204.

  The length of the lower surface 41a of the positioning member 41 in the Y direction is the bottom surface in a state where the side surface 63 of the nesting plate 204 is in contact with the reference surface 32 and the side surface 51b of the first holder member 51 is in contact with the auxiliary surface 26. 21 is defined by the distance between the side surface 64 of the nesting plate 204 and the third inclined surface 33. It is preferable that the length of the lower surface 41 a of the positioning member 41 in the Y direction is slightly larger than the distance between the side surface 64 of the nesting plate 204 and the third inclined surface 33 on the bottom surface 21.

  The positioning member 41 in which the length of the lower surface 41a in the Y direction is slightly larger than the distance between the side surface 64 of the nested plate 204 and the thirteenth inclined surface 33 on the bottom surface 21 is formed by inserting the positioning member 41 with the first holder. When the positioning member 41 is inserted between the member 51 and fixed to the bottom surface 21 with the bolts B <b> 6, the positioning member 41 is press-fitted between the nesting plate 204 and the first holder member 51.

  When the positioning member 41 is press-fitted, the load accompanying the press-fit is transmitted to the third inclined surface 33 of the first holder member 51 via the fourth inclined surface 43, and a vertical drag is generated in a direction corresponding to the inclination angle. The component force in the Y direction of the normal force is transmitted to the positioning member 41. The pressing surface 42 of the positioning member 41 to which the component force has been transmitted is pressed against the side surface 64 of the nesting plate 204, and the side surface 63 is pressed against the reference surface 32. The nesting mold plate 204 is positioned in the Y direction by the holder mold 304 by pressing the side surface 63 against the reference surface 32.

  When the positioning member 41 is inserted between the telescopic mold plate 204 and the first holder member 51 and fixed to the bottom surface 21 with the bolts B6, the bolts B5 of the first holder members 51 are fully tightened in advance and the holder It is firmly fixed to the mold 304, and the insert mold plate 204 is temporarily tightened with the bolt B1 to facilitate movement in the Y direction. By temporarily tightening the bolts B1 of the insert mold plate 204, the side surface 63 can be effectively pressed against the reference surface 32 by the component force in the Y direction.

  Regarding the positioning members 11, 41, the first holder member 51, the second holder member 52, the nesting plate 204, and the holder die 304, the state of the press-fitting of the positioning members 11, 41 fluctuates with the temperature change. It is preferable that the coefficient of linear expansion be the same in order to suppress.

  As described above, in the mold apparatus 1 of the present embodiment, when the insert mold plate 204 (that is, the cassette mold 200) is positioned with respect to the holder mold 304 in the Y direction, the same operation as when the positioning is performed in the X direction.・ Effects can be obtained. The same applies to the case where the insert mold plate 204 (that is, the cassette mold 200) is detached from the holder mold 304.

  The angle at which the third inclined surface 33 and the fourth inclined surface 43 are inclined with respect to the XZ plane is 1 ° or more, like the angle at which the first inclined surface 23 and the second inclined surface 13 are inclined with respect to the YZ plane. , Preferably 10 ° or less.

  The third inclined surface 33 may not be provided on the first holder member 51 but may be provided on the holder die 304. In the case where the third inclined surface 33 is provided on the holder die 304, it is not necessary to use the first holder member 51, and the number of components can be reduced.

  Returning to FIG. 1, the pair of spacers 305 has a rectangular column shape. The pair of spacers 305 are arranged at intervals in the X direction. The pair of spacers 305 are respectively arranged at positions outside the through hole 315 in the X direction. The length of the pair of spacers 305 in the Z direction is the same as the total length of the pair of spacers 206 and the support plate 209 of the cassette 200 in the Z direction. When the insert mold plate 204 of the cassette mold 200 is placed on the bottom surface 21 of the concave portion 20 of the holder mold 304, the pair of spacers 206 and the support plate 209 are located in the space between the pair of spacers 305. When the insert mold plate 204 of the cassette mold 200 is placed on the bottom surface 21 of the concave portion 20 of the holder mold 304, the support plate 209 is supported by the support plate 306 from the side opposite to the PL.

  The support plate 306 supports the support plate 209 from the side opposite to the PL when the cassette type 200 is mounted on the movable type MM. As shown in FIGS. 1 and 3, the support plate 306 has a guide bush 317 at a position coaxial with the through hole 209A of the support plate 209 when the cassette type 200 is mounted on the movable type MM.

  As an example, the protruding holding plate 307 and the protruding plate 308 each have a rectangular shape when viewed in the Z direction. The protruding holding plate 307 and the protruding plate 308 are stacked and integrated in the Z direction. As shown in FIG. 3, the position of the protruding plate 308 in the Z direction is defined by a Z position defining bolt 318. The Z position defining bolt 318 has a screw portion 318a, a shaft portion 318b, and a head portion 318c. The screw portion 318a, the shaft portion 318b, and the head portion 318c are coaxially arranged in order from the PL side along the Z direction. The screw portion 318a is screwed to the lower surface 306B of the support plate 306 on the side opposite to the PL. The shaft portion 318b has a cylindrical shape extending in the Z direction. The shaft portion 318b is engaged with the lower surface 306B at the end on the + Z side. The head portion 318c is provided at the -Z side end of the shaft portion 318b. The head 318c has a larger diameter than the shaft 318b.

  The protruding plate 308 has a through hole 319a and a counterbore portion 319b. The through hole 319a penetrates the protruding plate 308 in the Z direction. The shaft portion 318b of the Z position defining bolt 318 is inserted into the through hole 319a so as to be movable in the Z direction. The shaft portion 318b inserted into the through hole 319a guides the movement of the protruding plate 308 in the Z direction. The counterbore portion 319b is provided coaxially with the through hole 319a on the lower surface 308B of the protruding plate 308 on the side opposite to the PL.

  The protruding holding plate 307 has a through hole 320 penetrating in the Z direction. The through hole 320 is coaxial with the through hole 319a of the protruding plate 308. The diameter of the through hole 320 is larger than the diameter of the through hole 319a. The through-hole 320 is provided with a compression spring 321 such as a coil spring that can expand and contract in the Z direction. The shaft portion 318 b of the Z position defining bolt 318 is inserted through the compression spring 321.

  In a compressed state, the end of the compression spring 321 on the + Z side contacts the lower surface 306B of the support plate 306, and the end on the −Z side contacts the upper surface 308A of the protruding plate 308 on the PL side. The protruding holding plate 307 and the protruding plate 308 are pushed to the −Z side by the elastic restoring force of the compression spring 321. When the protruding holding plate 307 and the protruding plate 308 are pushed to the −Z side, the counterbore portion 319 b of the protruding plate 308 comes into contact with the head portion 318 c of the Z position defining bolt 318 from the + Z side. When the counterbore portion 319b contacts the head portion 318c of the Z position defining bolt 318 from the + Z side, the position of the protruding plate 308 in the Z direction is defined (hereinafter, the state in which the position in the Z direction is defined is referred to as an initial state. Name). The distance in the Z direction between the lower surface 306B of the support plate 306 and the upper surface 307A on the PL side of the projection holding plate 307 in the initial state is the maximum stroke in which the projection holding plate 307 and the projection plate 308 can move in the Z direction.

  The protrusion holding plate 307 holds the second ejector pin E2 at a position coaxial with each of the guide bushes 317 provided on the support plate 306. The second ejector pin E2 has a cylindrical shape extending in the Z direction. The second ejector pin E2 is disposed at a position overlapping the projecting holding plate 207 and the projecting plate 208 in the Z direction. The protruding holding plate 307 and the protruding plate 308 constitute a second ejector type that can hold the second ejector pin E2 and move in the Z direction.

  The diameter of the distal end of the second ejector pin E2 is smaller than the diameter of the through hole 209A in the support plate 209 of the cassette type 200. The second ejector pin E2 is fitted on the inner peripheral surface of the guide bush 317 so as to be movable in the Z direction. In the initial state, the tip of the second ejector pin E2 protrudes from the support plate 306 to the + Z side. The distal end of the second ejector pin E2 protruding from the support plate 306 to the + Z side is inserted into a through hole 209A of the support plate 209 of the cassette 200 mounted on the movable MM. The distal end surface of the second ejector pin E2 in the initial state is in contact with the -Z side of the projecting plate 208 of the cassette type 200 mounted on the movable type MM or faces with a gap in the Z direction.

  The size of the protruding holding plate 307 and the protruding plate 308 in the X direction and the Y direction is a size including the axial center J and capable of holding the second ejector pin E2.

  The mounting plate 309 is mounted on a movable plate of the molding machine. The mounting plate 309 has a through hole 322 that penetrates in the Z direction about the axis center J. The position in the X direction and the position in the Y direction of the inner surface of the through hole 322 are positions where a gap is provided between each side surface of the protruding holding plate 307 and the protruding plate 308.

  The lower surface 309B of the mounting plate 309 on the side opposite to the PL is flush with the lower surface 308B of the protruding plate 308 in the initial state or located on the −Z side with respect to the lower surface 308B. When the lower surface 308B of the projecting plate 308 in the initial state is located on the −Z side with respect to the lower surface 309B of the mounting plate 309, when the movable mold MM is mounted on the movable plate of the molding machine, the projecting plate 308 and the movable plate of the molding machine are Contact may damage at least one of them.

  As shown in FIG. 3, the movable plate of the molding machine is provided with a protruding rod ER that can move forward on the + Z side and retreat on the −Z side at the position of the shaft center J. The protruding rod ER makes the fixed mold FM and the movable mold MM come into contact with each other, mold-clamps, cools and solidifies the molten material introduced into the cavity, and removes the molded product from the movable mold MM after being separated from the fixed mold FM. It moves forward to the + Z side when releasing.

  That is, in the mold apparatus 1, first, the two cassette molds 200 are positioned on the movable mold MM as described above, and the fixed mold FM attached to the fixed board of the molding machine and the movable mold MM attached to the movable board are separated. After the mold is brought into contact with the mold, the molten material is introduced and filled into the cavity through the gates of the spool bush 311, the support plate 314, and the nested mold plates 315A and 315B. As the molten material, a molten metal material, a molten resin material, or the like can be used.

  After cooling and solidifying the molten material via the mold apparatus 1, the movable mold MM is retracted and opened. Thereafter, the protruding rod ER that has advanced to the + Z side moves the protruding holding plate 307 and the protruding plate 308 to the + Z side against the elastic restoring force of the compression spring 321. As the protruding holding plate 307 and the protruding plate 308 move to the + Z side, the second ejector pin E2 moves to the + Z side, and the protruding holding plate 207 and the protruding plate 208 of the cassette type 200 are elastically restored by the compression spring 321. Is moved to the + Z side. As the protruding holding plate 207 and the protruding plate 208 move to the + Z side, the first ejector pins E1 provided for the two cassette dies 200 move integrally to the + Z side, and the molded product in the cavity can be protruded and moved. Release from mold MM.

  After the protruding rod ER advances by a predetermined movement stroke, it retreats to a position away from the protruding plate 308 in the initial state. When the protruding rod ER retreats, the protruding holding plate 307 and the protruding plate 308 retreat to the initial position by the elastic restoring force of the compression spring 321. The second ejector pin E2 moves to the −Z side with the retreat of the protrusion holding plate 307 and the protrusion plate 308. When the second ejector pin E2 moves to the -Z side, the projecting holding plate 207, the projecting plate 208, and the first ejector pin E1 move to the -Z side due to the elastic restoring force of the compression spring 211. By repeating the forward and backward movement of the protruding rod ER a plurality of times periodically, the molded product molded in the cavity is protruded a plurality of times, so that the remaining molded product in the cavity can be suppressed.

  As described above, in the mold apparatus 1 of the present embodiment, the positioning member 11 having the second inclined surface 13 is provided between the second holder member 52 having the first inclined surface 23 and the nesting plate 204. The cassette type 200 can be stably positioned to the movable type MM with a simple configuration of inserting and fixing the cassette type.

  As described above, the preferred embodiments according to the present invention have been described with reference to the accompanying drawings, but it is needless to say that the present invention is not limited to the examples. The shapes, combinations, and the like of the constituent members shown in the above-described examples are merely examples, and various changes can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the above-described embodiment, the configuration in which the cassette type 200 is detachably provided to the movable type MM is illustrated, but the present invention is not limited to this configuration. The present invention also includes a configuration in which the cassette type is detachably provided on both the fixed type FM and the movable type MM.

  In the above embodiment, the configuration in which the positioning of the cassette mold 200 is performed using the positioning member having the inclined surface in each of the X direction and the Y direction has been exemplified. However, the configuration in which the positioning is performed in only one of the directions is also possible. Good.

  DESCRIPTION OF SYMBOLS 1 ... Die apparatus, 11 ... Positioning member, 12 ... Pressing surface, 13 ... Second inclined surface, 20 ... Depression, 21 ... Bottom surface, 22 ... Reference surface, 23 ... First inclined surface, 32 ... Reference surface (No. Reference numeral 33) Third inclined surface 41 Positioning member (second positioning member) 42 Pressing surface (second pressing surface) 43 Fourth inclined surface 51 First holder member 52: second holder member, 61: side surface (first side surface), 62: side surface (second side surface), 63: side surface (third side surface), 64: side surface (fourth side surface), 200: cassette type, 207: Projection holding plate (first ejector type), 208: Projection plate (first ejector type), 304: Holder type, 304A: Opposing surface, 307: Projection holding plate (second ejector type), 308: Projection plate (secondary type) Ejector type), E1 ... First ejector Tapin, E2: second ejector pin, FM: fixed type, MM: movable type

Claims (10)

Fixed type,
A movable mold that is relatively movable with respect to the fixed mold,
Of the fixed mold and the movable mold, a cassette mold removably mounted on a holder mold of at least one mold including the movable mold,
A positioning member that is provided on the holder mold and presses and positions the cassette mold against the holder mold;
The holder mold has a recess provided on a surface facing the other mold of the fixed mold and the movable mold,
A reference surface provided perpendicularly to the other mold side in the relative movement direction from an end in a first direction orthogonal to the relative movement direction on the bottom surface of the concave portion;
A first inclined surface facing the reference surface in the first direction via the concave portion, and being inclined with respect to the reference surface in a direction toward the reference surface as going from the facing surface to the bottom surface; Has,
The cassette type has a first side surface facing in parallel with the reference surface when placed on the bottom surface of the concave portion, and a second side surface facing the first inclined surface,
The positioning member has a pressing surface that faces in parallel with the second side surface, and a second inclined surface that faces in parallel with the first inclined surface, and when attached to the holder die, (2) the inclined surface is in contact with the first inclined surface, and the pressing surface is in contact with the second side surface and presses the first side surface against the reference surface;
Mold equipment.   The mold device according to claim 1, wherein a plurality of the concave portion, the reference surface, the first inclined surface, the cassette mold, and the positioning member are provided in the holder mold. The cassette type includes a first ejector type that can hold a first ejector pin and move in the relative movement direction,
The movable type includes a second ejector type that holds a second ejector pin provided for each of the plurality of cassettes and is movable in the relative movement direction,
The second ejector type is disposed at a position including the center of the movable type as viewed in the relative movement direction,
The mold apparatus according to claim 2, wherein the second ejector pin is arranged at a position overlapping the first ejector mold in the relative movement direction.   The concave portion, the reference surface, the first inclined surface, the cassette type, and the positioning member are arranged symmetrically with respect to a center line extending in the relative movement direction and a second direction orthogonal to the first direction. The mold apparatus according to any one of claims 1 to 3, wherein   When viewed in the relative movement direction, the reference surface is arranged on the center side of the holder mold in the first direction, and the first inclined surface and the positioning member are arranged outside the holder mold in the first direction. The mold apparatus according to claim 4, wherein the mold apparatus is formed. A second reference surface provided perpendicularly to an end of the bottom surface of the recess in the relative movement direction and a second direction orthogonal to the first direction from the end of the bottom surface of the recess to the other mold side in the relative movement direction; ,
The second reference surface is opposed to the second reference surface via the concave portion, and is inclined with respect to the second reference surface in a direction toward the second reference surface as going from the facing surface to the bottom surface. Having a third inclined surface,
The cassette type has a third side surface facing the second reference surface in parallel when placed on the bottom surface of the concave portion, and a fourth side surface facing the third inclined surface,
A second inclined surface facing in parallel with the fourth side surface, and a fourth inclined surface facing in parallel with the third inclined surface, wherein the fourth inclined surface is attached to the holder die. 6 includes a second positioning member that contacts the third inclined surface, and the second pressing surface contacts the fourth side surface to press the third side surface against the second reference surface. The mold apparatus according to any one of claims 1 to 4.   The mold device according to claim 6, wherein the third inclined surface is provided on a first holder member detachably attached to the holder mold.   The mold device according to claim 6, wherein a length of the second positioning member in the relative movement direction is smaller than a distance between the bottom surface and the facing surface.   The mold device according to any one of claims 1 to 8, wherein the first inclined surface is provided on a second holder member detachably attached to the holder mold.   The mold device according to any one of claims 1 to 9, wherein a length of the positioning member in the relative movement direction is smaller than a distance between the bottom surface and the facing surface.

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