Mold material

Abstract

To provide a mold member having a simple structure and high interest. [Solution] A mold member 1 for molding a deformable object comprises a main body 10 having an opening 15 communicating with the outside and defining a molding space, and a lid 20 that can be attached to close the opening 15. The lid 20 is capable of compressive movement in a direction to reduce the volume of the molding space, and at least one of the main body 10 and the lid 20 has a communicating hole 28 that communicates with the outside. The lid 20 is capable of compressive movement in a direction to reduce the volume of the molding space, and at least one of the main body 10 and the lid 20 has a communicating hole 28 that communicates with the outside, so that when the lid 20 is moved to mold an article, excess material can be discharged from the communicating hole 28.

Description

[Technical Field]

[0001] The present invention relates to a mold member. [Background technology]

[0002] For example, Patent Document 1 discloses a molded play equipment configuration that includes a plurality of partial molds consisting of a pair of mating molds that are assembled together and have a molding space inside into which molding material is injected to form a molded product, and a holding case that can hold at least two partial molds arranged adjacent to each other, where grooves are provided on the sides of the partial molds and the holding case is provided with guide jetty portions that can guide the grooves when the partial molds are attached to the holding case, and when the at least two partial molds are attached to the holding case with the grooves guided by the guide jetty portions and arranged adjacent to each other, the molding spaces are connected to each other and the molding material injected into each molding space is integrated to form a molded product. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4224127 Summary of the Invention [Problem to be solved by the invention]

[0004] Patent Document 1 provides a molded play equipment that allows the structure of the molded product to be partially modified and that is easy to release from the mold. For this type of molded component, a molded component with a new mechanism is required.

[0005] The present invention provides, for example, a mold member with a novel mechanism. [Means for solving the problem]

[0006] The present invention relates to, for example, a mold member for molding a deformable object, comprising a main body portion having an opening communicating with the outside and defining a molding space, and a lid portion that can be attached to close the opening, wherein the lid portion is capable of compressive movement in a direction that reduces the volume of the molding space, and at least one of the main body portion and the lid portion has a communication hole that communicates with the outside. [Effects of the Invention]

[0007] According to the present invention, for example, a mold member having a novel mechanism can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing an example of a mold member according to an embodiment of the present invention. [Figure 2] FIG. 10 is a perspective view of the assembled mold members as seen from the bottom side. [Figure 3] 3 is a cross-sectional view of a portion of the lid taken along line AA of FIG. 2. FIG. [Figure 4] FIG. 2 is an exploded perspective view of the mold member shown in FIG. [Figure 5] FIG. 5 is a perspective view of the disassembled mold members shown in FIG. 4 at an initial stage of assembly. [Figure 6] FIG. 2 is a perspective view showing the assembled state of the first mold part and the second mold part. [Figure 7] FIG. 2 is a side view of the mold members in an assembled state. [Figure 8] FIG. 2 is a perspective view showing an initial operation when molding a molded body. [Figure 9] FIG. 10 is a perspective view showing the operation after the body is filled with the molded body. [Figure 10] FIG. 10 is a perspective view showing the tightening operation of the lid portion. [Figure 11] FIG. 10 is a perspective view showing the operation of removing the molded body. [Figure 12] FIG. 10 is a plan view showing an example of a form in which a mold member is provided. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a mold member according to one aspect of the present invention will be described with reference to the drawings.

[0010] FIG. 1 is a perspective view showing an example of a mold member 1 according to an embodiment of the present invention. The mold member 1 shown in FIG. 1 is a molding member used when molding a molded object 5 (see FIG. 8), which is a deformable object such as paper clay. This mold member 1 includes a main body 10 that defines a molding space SP, and a lid 20 that closes an opening 15 formed by the main body 10. The main body 10 molds the side of the molded object 5, and has a generally conical shape that forms a large-diameter circular opening 15 at one end (lower in the figure) and gradually tapers toward the other end (upper in the figure). The inner surface 10is of the main body 10 has a curved shape that bulges outward, for example, in a spiral shape toward the top.

[0011] The opening 15 formed on the lower end side of the main body 10 is composed of a cylindrical opening peripheral wall 15w. A spiral groove 15g having a rectangular cross section like a screw groove is provided on the outer peripheral surface 15ws of the opening peripheral wall 15w. This spiral groove 15g is provided on the outer peripheral surface 15ws of the opening peripheral wall 15w so as to circle the outer peripheral surface 15ws by approximately 180 degrees. The spiral groove 15g is an inclined groove that rotates approximately 180 degrees from the distal edge 15e of the opening peripheral wall 15w toward the proximal edge 15b, and is formed as a pair (two grooves) at positions 180 degrees apart in the circumferential direction of the opening peripheral wall 15w.

[0012] FIG. 2 is a perspective view of the assembled mold member 1 as seen from the bottom side. As shown in Fig. 2, the cover 20 can be attached to the opening 15 to assemble the mold member 1. The cover 20 has two communication holes 28 that connect the molding space SP to the outside, at a position offset from the rotation center C20 when attached. The communication holes 28 can discharge air from within the molding space SP when the molded body 5 is compressed, and can also discharge excess molded body 5 from within the molding space SP. Furthermore, when excess molded body 5 protrudes, the communication holes 28 can be cut off as the cover 20 rotates, as described below.

[0013] FIG. 3 is a cross-sectional view of the lid 20 taken along line AA in FIG. 3, the lid portion 20 includes a cylindrical outer ring portion 21 and an inward protrusion 22 that is located inside the outer ring portion 21 and has approximately the same height as the outer ring portion 21. The inward protrusion 22 protrudes into the molding space SP, and a tip end plane 22a that forms the tip of the protrusion is configured as a flat plane, and forms the inner wall of the molding space SP.

[0014] The lid portion 20 has at least one pair of fitting protrusions 24 that can fit into the spiral groove 15g and that protrude inward at positions 180 degrees opposite in the circumferential direction on its inner circumferential surface 24is. That is, the lid portion 20 is structured so that the fitting protrusions 24 are guided by the spiral groove 15g and screwed in to close the opening 15. Therefore, the lid portion 20 can move (compressively move) in a direction that reduces the volume of the molding space SP by rotating it. By this compressive movement, as will be described later, the molded body 5 accommodated in the molding space SP is compressed so as to be forced into the molding space SP, and is molded into the shape of the molding space SP of the mold member 1.

[0015] The communication hole 28 is configured, for example, in a crescent shape (see FIG. 2) with its edge including a curved portion 28a and a straight portion 28b. Here, the straight portion 28b extends along the direction of the rotation radius of the lid portion 20. The straight portion 28b is configured in a tapered shape such that its thickness becomes thinner toward the molding space SP side.

[0016] Furthermore, marks 20m, 10m (see FIG. 1) are provided to indicate the engagement start position between the engagement projection 24 and the spiral groove 15g when attaching the lid portion 20 to the main body 10. This allows for smooth attachment of the lid portion 20. Furthermore, as shown in FIG. 3, at the end position of the compression movement of the lid portion 20, the engagement projection 24 is engaged with the terminal annular groove 15gc. This terminal annular groove 15gc is an endless annular groove in the circumferential direction of the opening peripheral wall 15w. Therefore, when the engagement projection 24 is engaged with the terminal annular groove 15gc, the lid portion 20 can rotate at the end position (the tightened state at the position closest to the molding space SP) where the tip flat surface 22a of the inward protrusion 22 forms the inner surface of the molding space SP.

[0017] Since the lid portion 20 can rotate while maintaining its tightened position, it is possible to cut off the excess molded body in the molding space SP that protrudes from the communicating hole 28 by compression movement, as described below.

[0018] FIG. 4 is an exploded perspective view of the mold member 1 shown in FIG. As shown in Figure 4, the main body 10 has a combined structure of a first mold section 11 and a second mold section 12, with the molding space SP vertically divided in half. The opening 15 is divided proportionally between the first mold section 11 and the second mold section 12. A reinforcing rib 14 extends continuously for a predetermined length on the combined surface of the first mold section 11 and the second mold section 12 toward the outer surface 10us opposite the molding space SP. A hinge section 16 that combines the first mold section 11 and the second mold section 12 so that they can be opened and closed, and a closing locking section 17 are provided on the opposite side of the hinge section 16.

[0019] FIG. 5 is a perspective view of the disassembled mold member 1 shown in FIG. 4 at an initial stage of assembly. When assembling the mold member 1, first, the hinge portion 16 of the first mold portion 11 and the second mold portion 12 are combined. The hinge portion 16 has, for example, a hook portion 16a on the first mold portion 11 side and a hooked portion 16b on the second mold portion 12 side. The hook portion 16a has, for example, three C-shaped hooks 16af arranged side by side along the reinforcing rib 14 as part of the reinforcing rib 14. Meanwhile, the hooked portion 16b has a shaft portion 16bj to which the C-shaped hook 16af can be hooked. Therefore, as shown in FIG. 5, the hinge portion 16 is formed by combining the hook portion 16a and the hooked portion 16b so that they are hooked together.

[0020] FIG. 6 is a perspective view showing the first mold portion 11 and the second mold portion 12 in an assembled state. 6, when the first mold part 11 and the second mold part 12 are combined, the main body part 10 can be opened and closed around the rotation axis C16 of the hinge part 16. When the main body part 10 is closed, the closed state can be maintained by the closing locking part 17 provided on the opposite side of the hinge part 16.

[0021] The closing locking portion 17 has, for example, a hooking claw 17b that protrudes perpendicularly from the reinforcing rib 14 on the second mold portion 12 side. On the other hand, the first mold portion 11 side has a hooking edge 17a that is formed by the edge of the reinforcing rib 14 so as to be hooked onto the hooking claw 17b. Therefore, when the first mold portion 11 and the second mold portion 12 are closed, the hooking edge 17a is locked by fitting inside the hooking claw 17b.

[0022] FIG. 7 is a side view of the mold member 1 in an assembled state. 7 shows the mold member 1 in a state where the lid portion 20 is attached to the main body portion 10 in a closed state. In this state, the lid portion 20 is fitted to close the opening portion 15, and the mold member 1 is in a storage state when not in use, or in a state where the molded body 5 is pressurized and accommodated in the molding space SP.

[0023] When the first mold section 11 and the second mold section 12 are assembled, the main body section 10 has a reinforcing rib 14 surrounding the outer surface 10us along the vertical direction, as shown in Fig. 7. The reinforcing rib 14 has a large width extending radially outward from the molding space SP, as shown in the figure. This maintains an extremely high rigidity of the main body section 10. In addition, the outer peripheral surface 20us of the lid section 20 has an uneven configuration, making it easy to apply force when rotating the lid section 20.

[0024] The molding of the molded body 5 using the mold member 1 will be described below with reference to FIGS. FIG. 8 is a perspective view showing the initial operation when molding the body 5 to be molded. When molding a molded object 5 such as clay using the mold member 1, the lid 20 is removed and the opening 15 of the main body 10 is left open, as shown in Figure 8. The molded object 5 is packed into the molding space SP of the main body 10 by pushing it through the opening 15. At this time, the amount of molded object 5 packed should be slightly larger than the amount of the molding space SP.

[0025] FIG. 9 is a perspective view showing the operation after the body 10 is filled with the molding material 5. As shown in FIG. After the molding space SP of the main body 10 is filled with the molded body 5, the opening 15 is closed with the lid 20, as shown in Fig. 9. At this time, the lid 20 is positioned so that the lid-side mark 20m on the lid 20 and the main body-side mark 10m on the main body 10 are aligned, and then the lid 20 is fitted. By aligning these marks 20m and 10m, the fitting protrusion 24 can be aligned with the fitting start position for the spiral groove 15g.

[0026] FIG. 10 is a perspective view showing the tightening operation of the lid portion 20. As shown in FIG. The lid portion 20 is aligned with the opening 15 and rotated clockwise. This rotation moves the lid portion 20 toward the inside of the molding space SP of the opening 15. As a result, the inward protrusion 22 presses the molded body 5 in the opening 15, and presses the entire molded body 5 against the inner wall surface of the molding space SP.

[0027] When the lid portion 20 is rotated, the excess molded body 5b protrudes from the communicating hole 28. The protruding excess molded body 5b is then cut off by the edge of the communicating hole 28. Here, when the lid portion 20 is pushed into the deepest part of the opening 15, it rotates freely so as not to go any deeper, as described above. In other words, the lid portion 20 is in a state where it can rotate in either the forward or reverse direction, and the excess molded body 5b can be neatly cut off.

[0028] FIG. 11 is a perspective view showing the operation of removing the molded body 5a. After the pressing operation on the molded body 5 is completed, the lid portion 20 is rotated in the reverse direction (counterclockwise) and removed. Thereafter, the main body portion 10 is opened as shown in FIG. 11. By opening the main body portion 10, for example, the molded body 5a remaining on the second mold portion 12 can be removed. The molded body 5a has a flat bottom surface 5ad. This is because the tip plane 22a of the inward convex portion 22 of the lid portion 20 is a flat surface that forms the inner surface on the main body portion 10 side, and thus a molded body 5a having a flat bottom surface 5ad can be obtained.

[0029] FIG. 12 is a plan view showing an example of how the mold member 1 is provided. The first mold part 11, the second mold part 12, and the lid part 20 of the mold member 1 are molded from synthetic resin. Therefore, for example, as shown in Fig. 12, these parts can be supplied in a state connected by a runner 30 at the time of molding. In addition, the runner 30 can be provided with various parts 33, 34, 35, 36, 37, and 39 that can be attached to the molded body 5a.

[0030] As described above, in the mold member 1 of this embodiment, the lid portion 20 can be compressed and moved in a direction to reduce the volume of the molding space SP, and at least one of the main body portion 10 and the lid portion 20 has a communication hole 28 that communicates with the outside, so that when the lid portion 20 is moved to mold the article (molded body 5), excess portions can be discharged from the communication hole 28.

[0031] In the mold member 1 of this embodiment, the communication hole 28 provided in the lid portion 20 is formed at a position away from the center of rotation, so that the rotational movement during compression of the lid portion 20 makes it easy to cut off the excess portion that protrudes from the communication hole 28. Furthermore, the communication hole 28 has a tapered structure in which the thickness of the straight portion 28b extending in the direction of the rotation radius is reduced toward the edge of the straight portion 28b, so that the excess portion can be easily cut off.

[0032] In the mold member of this embodiment, the lid portion 20 is configured to be able to rotate at the end position of the compression movement while maintaining that end position, so that the excess portion protruding from the communicating hole 28 can be neatly cut off.

[0033] In the mold member 1 of this embodiment, an inward protrusion 22 that protrudes toward the inside of the molding space is provided on the inside of the lid portion 20, making it easy to apply pressure to the molded body 5 at the opening 15 by rotating the lid portion 20. In addition, the tip flat surface 22a of the inward protrusion 22 is configured to be flat, making it easy to apply pressure. Furthermore, the end point of the compression movement of the tip flat surface 22a of the inward protrusion 22 is configured to be flush with the inner surface of the main body portion 10, making it possible to flatten the outer surface of the molded body 5a and to conform to the shape of the main body portion 10 without leaving any trace of the shape of the opening 15.

[0034] In the mold member 1 of this embodiment, the communication holes 28 are provided in the inward convex portion 22 of the lid portion 20, so that the excess portion that protrudes during molding and compression can be effectively cut off as the lid portion 20 rotates.

[0035] Furthermore, according to the mold member 1 of this embodiment, the reinforcing rib 14 of a predetermined length is provided on the outer surface 10us of the main body 10, thereby increasing the rigidity and strength of the mold member 1. Furthermore, the main body 10 is configured to be divided into two along the reinforcing rib 14, which allows for a two-part structure while maintaining strength.

[0036] In the mold member 1 of this embodiment, the first mold section 11 and the second mold section 12 can be opened and closed by the hinge section 16, which makes it easy to remove the molded body 5a from the mold member 1. The openable and closable structure also makes it easy to remove molded bodies 5a with complex shapes. Furthermore, the hinge section 16 is configured to be provided along the reinforcing rib 14, which makes it easy to form the hinge section 16 and also makes it possible to provide a hinge structure with high strength.

[0037] In the mold member 1 of this embodiment, the opening 15 is configured to be divided proportionally between the first mold portion 11 and the second mold portion 12, so that when the lid portion 20 is attached, the first mold portion 11 and the second mold portion 12 can be tightened and firmly fixed together.

[0038] In the mold member 1 of this embodiment, the first mold part 11 and the second mold part 12, which are molded from synthetic resin, are supplied connected by the runner 30 at the time of molding, so that both parts can be reliably provided without missing any parts. In addition, other accessory parts can also be reliably provided in a state where they are attached to the runner 30. Furthermore, by providing the parts in a state where they are attached to the runner 30, it is possible to enjoy the feeling of removing the parts from the runner 30 just like playing with a plastic model.

[0039] Furthermore, according to the mold member 1 of this embodiment, the portion forming the opening 15 is composed of an opening peripheral wall 15w having a spiral groove 15g formed on the outer peripheral surface 15ws, and therefore, by fitting the engaging protrusion 24 formed on the inner peripheral surface of the lid portion 20 into the spiral groove 15g and rotating the lid portion 20, the opening 15 can be moved along the axis of the opening 15.

[0040] In the mold member 1 of this embodiment, marks 10m and 20m are provided between the lid portion 20 and the main body portion 10 to indicate the start position of engagement between the engagement protrusion 24 and the spiral groove 15g, making it easier to fit the lid portion 20 together.

[0041] While one embodiment of the present invention has been described above, the present invention can be modified as appropriate within the scope of its technical concept. For example, in the above embodiment, the communication hole 28 is provided in the lid portion 20, but the present invention is not limited to this configuration, and the communication hole 28 may be provided in the main body portion 10.

[0042] Furthermore, although two communication holes 28 are provided at positions off the rotation axis of the lid portion 20, this configuration is not limited to this. The number of communication holes can be determined arbitrarily depending on the size and shape of the mold member, and may be one or three or more, and may be provided on the rotation axis of the lid portion 20. When there is only one communication hole, it is preferably provided in the center of the lid portion.

[0043] <Summary of the embodiment> The above embodiment discloses at least the following mold members. (1) A mold member for forming a deformable object, comprising: a main body portion having an opening communicating with the outside and defining a molding space; a lid portion that can be attached to close the opening, The cover portion is capable of compressive movement in a direction to reduce the volume of the molding space, and a communication hole communicating with the outside is formed in at least one of the main body portion and the cover portion. (2) The mold member according to (1), The lid portion is a mold member that can undergo the compressive movement by rotation. (3) The mold member according to (2), The communication hole is provided in the lid portion. (4) (3) The mold member according to The mold member is configured such that the communication hole can cut off the object that protrudes outside the molding space due to the compressive movement by the rotation. (5) A mold member according to any one of (2) to (4), The communication hole is provided at a position offset from the rotation center of the lid portion. (6) A mold member according to any one of (2) to (5), the communication hole has an edge that includes a curved portion and a straight portion; The straight portion extends along the direction of the radius of rotation of the lid portion and is configured in a tapered shape that reduces in thickness toward the edge. (7) A mold member according to any one of (2) to (6), The mold member is configured so that the lid portion can rotate at an end point position of the compression movement while maintaining the end point position. (8) A mold member according to any one of (2) to (7), The cover portion has an inward protrusion that protrudes from the opening toward the inside of the molding space. (9) The mold member according to (8), The inward convex portion has a protruding tip formed as a flat tip plane, The mold member is configured so that the tip plane is flush with the inner surface of the main body portion at the end point of the compressive movement of the lid portion. (10) The mold member according to (8) or (9), The communication hole is provided in the inward convex portion of the mold member. (11) A mold member according to any one of (1) to (10), The main body portion is provided with a reinforcing rib that continues for a predetermined length on an outer surface opposite to an inner surface that forms the molding space. (12) The mold member according to (11), The main body portion is a mold member having a first mold portion and a second mold portion, which are divided along the reinforcing rib. (13) The mold member according to (12), The first mold portion and the second mold portion are configured to be openable and closable by a hinge portion provided along the reinforcing rib. (14) The mold member according to (13), The opening is proportionally divided between the first mold portion and the second mold portion. (15) A mold member according to any one of (12) to (14), The first mold part and the second mold part are molded from a synthetic resin, The first mold part and the second mold part are supplied in a state of being connected by a runner during molding. (16) A mold member according to any one of (1) to (15), The opening has a cylindrical peripheral wall that defines the opening, and the peripheral wall has at least a spiral groove that runs around the outer circumferential surface, the lid portion includes at least a pair of fitting projections that can be fitted into the spiral groove, A mold member in which the compressive movement is possible by rotation in a state in which the spiral groove and the fitting protrusion are fitted together. (17) The mold member according to (16), A mold member in which a mark is provided between the cover portion and the main body portion to indicate a fitting start position between the fitting projection and the spiral groove. [Explanation of symbols]

[0044] 1. Mold material 10 Main body 11 First mold section 12 Second mold section 14 Reinforcing rib 15 Opening 15g spiral groove 15w opening surrounding wall 15ws outer surface 16 Hinge part 20 Lid 22 Inner convex part 22a Tip plane 24. Fitting protrusion 28 Communication hole 28b Straight section 30 Runner

Claims

1. A mold member for forming a deformable object, comprising: a main body portion having an opening communicating with the outside and defining a molding space; a lid portion that can be attached to close the opening, The lid portion is capable of compressive movement in a direction to reduce the volume of the molding space, and a communication hole communicating with the outside is formed in at least one of the main body portion and the lid portion.

2. The mold member according to claim 1, The lid portion is a mold member that can undergo the compressive movement by rotation.

3. The mold member according to claim 2, The communication hole is provided in the lid portion.

4. The mold member according to claim 3, The mold member is configured such that the communicating hole can cut off the object that protrudes outside the molding space due to the compressive movement by the rotation.

5. The mold member according to claim 4, The communication hole is provided at a position offset from the rotation center of the lid portion.

6. The mold member according to claim 5, The communication hole has an edge that includes a curved portion and a straight portion, The straight portion extends along the direction of the radius of rotation of the lid portion and is configured in a tapered shape that becomes thinner toward the edge.

7. The mold member according to claim 6, The mold member is configured so that the lid portion can rotate at an end point position of the compression movement while maintaining the end point position.

8. The mold member according to any one of claims 2 to 7, The cover portion has an inward protrusion that protrudes from the opening toward the inside of the molding space.

9. The mold member according to claim 8, The inward convex portion has a protruding tip formed as a flat tip plane, The mold member is configured so that the tip plane is flush with the inner surface of the main body portion at the end position of the compression movement of the lid portion.

10. The mold member according to claim 9, The communication hole is provided in the inward convex portion of the mold member.

11. The mold member according to any one of claims 1 to 7, The main body portion is provided with a reinforcing rib that continues for a predetermined length on an outer surface opposite to an inner surface that forms the molding space.

12. The mold member according to claim 11, The main body portion is a mold member having a first mold portion and a second mold portion, which are divided along the reinforcing rib.

13. The mold member according to claim 12, The first mold portion and the second mold portion are configured to be openable and closable by a hinge portion provided along the reinforcing rib.

14. The mold member according to claim 13, The opening is proportionally divided between the first mold portion and the second mold portion.

15. 15. The mold member according to claim 14, the first mold portion and the second mold portion are molded from a synthetic resin; The first mold part and the second mold part are supplied in a state of being connected by a runner during molding.

16. 16. The mold member according to claim 15, The opening has a cylindrical peripheral wall that defines the opening, and the peripheral wall has at least a spiral groove that runs around the outer circumferential surface, the lid portion includes at least a pair of fitting protrusions that can be fitted into the spiral groove, A mold member in which the compressive movement is possible by rotation in a state in which the spiral groove and the fitting protrusion are fitted together.

17. 17. The mold member according to claim 16, A mold member in which a mark is provided between the cover portion and the main body portion to indicate a position where the fitting protrusion and the spiral groove start to fit together.

Images