Molding device

Abstract

According to an embodiment of the present disclosure, a molding device may comprise: a first core movable along a first direction and including a first contact portion; and a second core movable along a second direction intersecting the first direction and including a second contact portion facing the first contact portion, wherein the first contact portion includes: a first sealing surface extending from a first inner edge formed to define at least a portion of a cavity; and a first locking surface extending from the first sealing surface toward the inside of the first core, and the second contact portion includes: a second sealing surface extending from a second inner edge formed to define at least a portion of the cavity and configured to be in contact with the first sealing surface; and a second locking surface extending from the second sealing surface toward the first contact portion and configured to have at least a portion to be in contact with the first locking surface. Various other embodiments may also be possible.

Description

Mold device

[0001] One embodiment of the present disclosure relates to a mold device, for example, a mold device including two or more slide cores.

[0002] Injection molding may be a method of manufacturing an injection-molded product having a shape corresponding to the molding space by injecting molten material into a molding space (e.g., a cavity) formed by combining multiple (e.g., two or more) cores. Injection molding may be performed using a molding device configured to form a cavity and an injection device that injects molten material into the cavity.

[0003] As the structure of the molded part becomes more complex, multiple slide cores may be used. The slide cores may be moved by hydraulic and / or mechanical mechanisms, inserted into the cavity while the mold is closed to form an undercut, and separated from the molded part when the mold is ejected.

[0004] Typically, when using slide cores in molding equipment, foreign matter such as parting lines can form at the boundaries between adjacent slide cores or between the slide core and the plate. Therefore, extensive research is being conducted on methods to minimize parting lines to improve the appearance of injection-molded products and minimize post-processing.

[0005] The above information may be provided as background information to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is prior art in connection with the present disclosure.

[0006] According to one embodiment of the present disclosure, a mold device may include a first core movable along a first direction and including a first contact portion, and a second core movable along a second direction intersecting the first direction and including a second contact portion facing the first contact portion, wherein the first contact portion includes: a first sealing surface extending from a first inner edge formed to define at least a portion of a cavity; and a first locking surface extending from the first sealing surface toward the inside of the first core, and wherein the second contact portion may include: a second sealing surface extending from a second inner edge formed to define at least a portion of the cavity and configured to contact the first sealing surface; and a second locking surface extending from the second sealing surface toward the first contact portion, the second locking surface being configured to contact at least a portion of the first locking surface. In one embodiment, the contact portions of the first slide core and the second slide core may be coupled to each other.

[0007] According to one embodiment of the present disclosure, a mold device includes a first slide core movable along a first direction and including a first contact portion; a second slide core movable along a second direction intersecting the first direction and including a second contact portion configured to contact the first contact portion, the second slide core including a third contact portion; and a third slide core movable along a third direction intersecting the second direction and including a fourth contact portion configured to contact the third contact portion, wherein the first slide core includes a first recessed portion recessed inwardly from the first contact portion, the third slide core includes a second recessed portion recessed inwardly from the fourth contact portion, and the second slide core may include: a first protruding portion formed in the second contact portion and inserted into the first recessed portion; and a second protruding portion formed in the third contact portion and inserted into the second recessed portion. In one embodiment, a plurality of slide cores (e.g., two) may be moved through one slide core.

[0008] According to one embodiment of the present disclosure, a mold device may include a first slide core movable along a first direction and including a first contact portion; a second slide core movable along a second direction intersecting the first direction and including a second contact portion configured to contact the first contact portion, the second slide core including a third contact portion; and a third slide core movable along a third direction intersecting the second direction and including a fourth contact portion configured to contact the third contact portion, wherein the first slide core may include a first protruding portion formed in the first contact portion and protruding outwardly of the first slide core, the second slide core may include a first recessed portion formed in the second contact portion and into which the first protruding portion is inserted; and a second protruding portion formed in the third contact portion and protruding outwardly of the second slide core, the third slide core may include a second recessed portion formed in the fourth contact portion and into which the second protruding portion is inserted. In one embodiment, multiple (e.g., two) slide cores may be interlocked with each other.

[0009] The above-described aspects or other aspects, configurations and / or advantages of one embodiment of the present disclosure may be further clarified by the following detailed description taken in conjunction with the accompanying drawings.

[0010] FIG. 1 is a drawing showing a mold opening state of a mold device according to one embodiment of the present disclosure.

[0011] FIG. 2 is a drawing showing a mold-closing state of a mold device according to one embodiment of the present disclosure.

[0012] FIG. 3 is an enlarged view of a portion of the mold device of FIG. 1 according to one embodiment of the present disclosure.

[0013] FIG. 4 is an enlarged view of a portion of the mold device of FIG. 2 according to one embodiment of the present disclosure.

[0014] FIG. 5 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure.

[0015] FIG. 6 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure.

[0016] FIG. 7 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure.

[0017] FIG. 8 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure.

[0018] FIG. 9 is a drawing showing a mold opening state of a mold device according to one embodiment of the present disclosure.

[0019] FIG. 10 is a drawing showing a mold-closing state of a mold device according to one embodiment of the present disclosure.

[0020] FIG. 11 is a perspective view showing a mold opening state of a mold device according to one embodiment of the present disclosure.

[0021] FIG. 12 is a perspective view showing a closed state of a mold device according to one embodiment of the present disclosure.

[0022] FIG. 13 is a perspective cross-sectional view showing a cross-section of a locking block according to one embodiment of the present disclosure.

[0023] FIG. 14 is a cross-sectional view of a portion of a mold device in an open state according to one embodiment of the present disclosure.

[0024] FIG. 15 is a cross-sectional view of a portion of a mold device in a closed state according to one embodiment of the present disclosure.

[0025] FIG. 16 is a cross-sectional view showing an increase in the stroke of a slide core through a locking block according to one embodiment of the present disclosure.

[0026] FIG. 17 is a cross-sectional view showing a stroke reduction of a slide core through a locking block according to one embodiment of the present disclosure.

[0027] Throughout the attached drawings, similar reference numbers may be assigned to similar parts, components and / or structures.

[0028] The following description of the accompanying drawings may provide an understanding of various exemplary implementations of the present disclosure, including the claims and their equivalents. While the exemplary embodiments disclosed in the following description include numerous specific details to aid understanding, they are to be considered as one example of various exemplary embodiments. Accordingly, those skilled in the art will appreciate that various modifications and variations of the various implementations described herein may be made without departing from the scope and spirit of the disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0029] The terms and words used in the following description and claims are not limited to their reference meanings and can be used to clearly and consistently describe one embodiment of the present disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various implementations of the disclosure is provided for illustrative purposes, not for the purpose of limiting the scope of the disclosure and its equivalents.

[0030] Unless the context clearly dictates otherwise, the singular forms of "a," "an," and "the" should be understood to include plural meanings. Thus, for example, "a component surface" could be understood to include one or more of the surfaces of the component.

[0031] Ordinal numbers such as first, second, etc. are used only to distinguish one component from another, and do not limit said components.

[0032] Figures 1 to 17 include x, y, and z coordinate axes of the same direction. The coordinate axes included in each drawing are for convenience of explanation, and the direction pointed by each axis (x-axis, y-axis, z-axis) does not have a directionality such as front-back, up-down, left-right, etc., and the direction pointed by each axis can be understood as +x, +y, +z direction, and the opposite direction can be understood as -x, -y, -z direction. Hereinafter, the embodiment(s) of the present disclosure will be described with reference to the x, y, and z coordinate axes.

[0033] Fig. 1 is a drawing showing a mold opening state of a mold device according to one embodiment of the present disclosure. Fig. 2 is a drawing showing a mold closing state of a mold device according to one embodiment of the present disclosure.

[0034] According to one embodiment of the present disclosure, the mold opening state of the mold device may be a state in which the cavity (C) is opened by the mold plates (20, 30, see FIGS. 14 and 15) forming the cavity and the plurality of slide cores (11, 12, 13, 14) being spaced apart from each other.

[0035] According to one embodiment of the present disclosure, the mold closure state of the mold device may be a state in which the cavity (C) is sealed by the mold plates (20, 30) forming the cavity and the plurality of slide cores (11, 12, 13, 14) coming into contact with each other.

[0036] According to one embodiment, the cavity (C) may be an internal space defined by a mold plate (20, 30) and a plurality of slide cores (11, 12, 13, 14) in a closed state, into which a molten material is injected. A molded part may be formed by injecting the molten material into the cavity (C) and then hardening it.

[0037] Referring to FIGS. 1 and 2, a mold device according to one embodiment of the present disclosure may include a plurality of slide cores (11, 12, 13, 14).

[0038] According to one embodiment of the present disclosure, the plurality of slide cores (11, 12, 13, 14) may include a first slide core (11), a second slide core (12), a third slide core (13), and a fourth slide core (14) that are movable in directions intersecting with each other.

[0039] According to one embodiment of the present disclosure, as an example, the first slide core (11) may face the third slide core, and the second slide core (12) may face the fourth slide core (14). The first slide core (11) and the third slide core (13) may move toward each other to form a cavity (C), and the second slide core (12) and the fourth slide core (14) may move toward each other to form a cavity (C).

[0040] According to one embodiment of the present disclosure, in the closed state, the slide cores (11, 12, 13, 14) can be in contact with the adjacent slide cores (11, 12, 13, 14). The first slide core (11) can be in contact with the second and fourth slide cores (12, 14). The third slide core (13) can be in contact with the second and fourth slide cores (12, 14). The plurality of slide cores (11, 12, 13, 14) in contact with each other can seal the cavity (C).

[0041] According to one embodiment of the present disclosure, each of the slide cores (11, 12, 13, 14) may include a cavity portion (117, 127, 137, 147) forming a cavity (C). The cavity portions (117, 127, 137, 147) may determine the shape of the injection-molded product (P, see FIGS. 3 and 4). The cavity portions (117, 127, 137, 147) may be spaced apart from each other and may contact each other at edges connected to contact portions (112, 113, 122, 123, 132, 133, 142, 143) to seal the cavity (C).

[0042] According to one embodiment of the present disclosure, each slide core (11, 12, 13, 14) may include a contact portion (112, 113, 122, 123, 132, 133, 142, 143) that contacts the adjacent slide core (11, 12, 13, 14). The contact portions (112, 113, 122, 123, 132, 133, 142, 143) and the cavity portions (117, 127, 137, 147) may be formed on the outer surface of each slide core (11, 12, 13, 14). Cavity

[0043] According to one embodiment of the present disclosure, the first slide core (11) may include a first contact portion (112) that contacts a second contact portion (122) of the second slide core (12), and an eighth contact portion (113) that contacts a seventh contact portion (143) of the fourth slide core (14).

[0044] According to one embodiment of the present disclosure, the second slide core (12) may include a second contact portion (122) that contacts the first contact portion (112) of the first slide core (11), and a third contact portion (123) that contacts the fourth contact portion (132) of the third slide core (13).

[0045] According to one embodiment of the present disclosure, the third slide core (13) may include a fourth contact portion (132) that contacts the third contact portion (123) of the second slide core (12), and a fifth contact portion (133) that contacts the sixth contact portion (142) of the fourth slide core (14).

[0046] According to one embodiment of the present disclosure, the fourth slide core (14) may include a seventh contact portion (143) that contacts the eighth contact portion (113) of the first slide core (11), and a sixth contact portion (142) that contacts the fifth contact portion (133) of the third slide core (13).

[0047] According to one embodiment of the present disclosure, the first contact portion (112) and the second contact portion (122) can be coupled to each other. The fourth contact portion (132) and the third contact portion (123) can be coupled to each other. The fifth contact portion (133) and the sixth contact portion (142) can be coupled to each other. The eighth contact portion (113) and the seventh contact portion (143) can be coupled to each other.

[0048] According to one embodiment of the present disclosure, the first, fourth, fifth, and eighth contact portions (112, 132, 133, 113) may have portions recessed inward. The second, third, sixth, and seventh contact portions (122, 123, 142, 143) may have portions protruding outward and may be inserted into the recessed portions of the first, fourth, fifth, and eighth contact portions (112, 132, 133, 113), respectively.

[0049] According to one embodiment of the present disclosure, in the above-described molded state, the first contact portion (112) and the second contact portion (122) may be partially spaced apart. The third contact portion (123) and the fourth contact portion (132) may be partially spaced apart. The fifth contact portion (133) and the sixth contact portion (142) may be partially spaced apart. The seventh contact portion (143) and the eighth contact portion (113) may be partially spaced apart.

[0050] According to one embodiment of the present disclosure, in the closed state, the first contact portion (112) and the second contact portion (122) can contact each other. The third contact portion (123) and the fourth contact portion (132) can contact each other. The fifth contact portion (133) and the sixth contact portion (142) can contact each other. The seventh contact portion (143) and the eighth contact portion (113) can contact each other.

[0051] According to one embodiment of the present disclosure, in the closed state, the first contact portion (112) and the second contact portion (122) can be coupled to each other. The third contact portion (123) and the fourth contact portion (132) can be coupled to each other. The fifth contact portion (133) and the sixth contact portion (142) can be coupled to each other. The seventh contact portion (143) and the eighth contact portion (113) can be coupled to each other.

[0052] According to one embodiment of the present disclosure, in the closed state, the first contact portion (112) and the second contact portion (122) can be engaged with each other. The third contact portion (123) and the fourth contact portion (132) can be engaged with each other. The fifth contact portion (133) and the sixth contact portion (142) can be engaged with each other. The seventh contact portion (143) and the eighth contact portion (113) can be engaged with each other.

[0053] According to one embodiment of the present disclosure, a plurality of slide cores (11, 12, 13, 14) may include a sealing surface (115, 125, 135, 145) that contacts a mold plate (20, 30). The sealing surface (115, 125, 135, 145) may contact the mold plate (20, 30) to seal the cavity (C).

[0054] According to one embodiment of the present disclosure, the slide core (11, 12, 13, 14) may include a body (111, 121, 131, 141) and ribs (114, 124, 134, 144). The ribs (114, 124, 134, 144) may be formed on the outside of the body (111, 121, 131, 141). The ribs (114, 124, 134, 144) may extend in a moving direction of the slide core (11, 12, 13, 14). The ribs (114, 124, 134, 144) may be movably coupled to the mold plate (30). The slide core (11, 12, 13, 14) can slide on the mold plate (30) through the ribs (114, 124, 134, 144). The coupling relationship between the ribs (114, 124, 134, 144) and the mold plate (30) will be described later.

[0055] According to one embodiment of the present disclosure, a plurality of slide cores (11, 12, 13, 14) can move in different directions to seal the cavity (C). As an example, referring to FIGS. 1 and 2, a first slide core (11) moves along the -x direction (hereinafter, the first direction), a third slide core (13) facing the first slide core (11) moves along the +x direction (hereinafter, the third direction), a second slide core (12) moves along the -y direction (hereinafter, the second direction), and a fourth slide core (14) facing the second slide core (12) moves along the +y direction (hereinafter, the fourth direction), thereby sealing the cavity (C).

[0056] FIG. 3 is an enlarged view of a portion of the mold device of FIG. 1 according to one embodiment of the present disclosure. FIG. 4 is an enlarged view of a portion of the mold device of FIG. 2 according to one embodiment of the present disclosure. For convenience of explanation, FIGS. 3 and 4 representatively illustrate a first contact portion (112) and a second contact portion (122) of the mold device according to one embodiment of the present disclosure.

[0057] The description of the first contact portion (112) with reference to FIGS. 3 and 4 may be understood as a description of the fourth, fifth, and eighth contact portions (132, 133, 113) of FIGS. 1 and 2, but is not limited thereto. In addition, the description of the second contact portion (122) with reference to FIGS. 3 and 4 may be understood as a description of the third, sixth, and seventh contact portions (123, 142, 143).

[0058] The description of the contact and coupling relationship between the first and second contact portions (112, 122) with reference to FIGS. 3 and 4 can be understood as a description of the contact and coupling relationship between the third and fourth contact portions (see FIGS. 1 and 2: 123, 132), the contact and coupling relationship between the fifth and sixth contact portions (see FIGS. 1 and 2: 133, 142), and the contact and coupling relationship between the seventh and eighth contact portions (see FIGS. 1 and 2: 143, 112).

[0059] Referring to FIGS. 3 and 4, according to one embodiment of the present disclosure, a first slide core (11) may include a first outer edge (112e), a first contact portion (112), and a first inner edge (112d). A second slide core (12) may include a second outer edge (122e), a second contact portion (122), and a second inner edge (122d).

[0060] According to one embodiment of the present disclosure, the first outer edge (112e) and the first inner edge (112d) may be understood as boundaries of a first contact portion (112) that contacts the second slide core (12). The second outer edge (122e) and the second inner edge (122d) may be understood as edges of a second contact portion (122). The first outer edge (112e) and the second outer edge (122e) may contact each other.

[0061] According to one embodiment of the present disclosure, the first inner edge (112d) and the second inner edge (122d) can define a cavity (C). The first inner edge (112d) can be understood as a boundary between the first sealing surface (112c) and the cavity portion (117) of the first slide core (11). The second inner edge (122d) can be understood as a boundary between the second sealing surface (122c) and the cavity portion (127) of the second slide core (12).

[0062] According to one embodiment of the present disclosure, the first contact portion (112) and the second contact portion (122) can face each other. The first contact portion (112) and the second contact portion (122) can contact each other. The first contact portion (112) and the second contact portion (122) can contact each other to seal the cavity (C).

[0063] According to one embodiment of the present disclosure, the first contact portion (112) may include a first sealing surface (112c). The first sealing surface (112c) may extend from the first inner edge (112d). The first sealing surface (112c) may contact the second sealing surface (122c) to seal the cavity (C). The second contact portion (122) may include a second sealing surface (122c). The second sealing surface (122c) may extend from the second inner edge (122d).

[0064] According to one embodiment of the present disclosure, the first sealing surface (112c) may extend obliquely with respect to the moving direction of the first slider (11). The second sealing surface (122c) may extend obliquely with respect to the moving direction of the second slider (12). The second sealing surface (122c) may extend parallel to the first sealing surface (112c).

[0065] According to one embodiment of the present disclosure, the first sealing surface (112c) may face the second sealing surface (122c). As the first slide core (11) and the second slide core (12) move, the distance between the first sealing surface (112c) and the second sealing surface (122c) may increase or decrease.

[0066] According to one embodiment of the present disclosure, the first contact portion (112) may include a first locking surface (112b). The first locking surface (112b) may extend from the first sealing surface (112c) toward the interior of the first slide core (11). The first locking surface (112b) may extend in a curved manner from the first sealing surface (112c). The first locking surface (112b) may extend at an angle with respect to the moving direction of the first slide core (11).

[0067] According to one embodiment of the present disclosure, the second contact portion (122) may include a second locking surface (122b) configured to contact the first locking surface (112b). The second locking surface (122b) may extend from the second sealing surface (122c) toward the outside of the second slide core (12). The second locking surface (122b) may extend in a curved manner from the second sealing surface (122c). The second locking surface (122b) may extend obliquely with respect to the moving direction of the second slide core (12). The second locking surface (122b) may extend parallel to the first locking surface (112b).

[0068] According to one embodiment of the present disclosure, the first contact portion (112) may include a recessed surface (112a). The first locking surface (112b) may connect the first sealing surface (112c) and the recessed surface (112a). The recessed surface (112a) may be spaced inward from the first sealing surface (112c) of the first slide core (11). The recessed surface (112a) may connect the first locking surface (112b) and the first outer edge (112e).

[0069] According to one embodiment of the present disclosure, the second contact portion (122) may include a protruding surface (122a). The second locking surface (122b) may connect the second sealing surface (122c) and the protruding surface (122a). The protruding surface (122a) may be spaced apart from the second sealing surface (122c) toward the outside of the second slide core (12). The protruding surface (122a) may connect the second locking surface (122b) and the second outer edge (122e).

[0070] According to one embodiment of the present disclosure, the recessed surface (112a) can form a recessed area (or recessed portion) from the first sealing surface (112c) together with the first locking surface (112b). The protruding surface (122a) can form a structure (or protruding portion) protruding from the second sealing surface (122c) together with the second locking surface (122b). The protruding structure can be inserted into the recessed area. Accordingly, the first contact portion (112) and the second contact portion (122) can be locked to each other.

[0071] According to one embodiment of the present disclosure, the recessed surface (112a) and the protruding surface (122a) may face each other. The recessed surface (112a) and the protruding surface (122a) may extend parallel to each other. As the first slide core (11) and the second slide core (12) move, the distance between the recessed surface (112a) and the protruding surface (122a) may increase or decrease.

[0072] According to one embodiment of the present disclosure, the first slide core (11) and the second slide core (12) can be coupled to each other through the sunken area formed in the first contact portion (112) and the protruding structure formed in the second contact portion (122).

[0073] According to one embodiment of the present disclosure, the second slide core (12) moves in the second direction (-y direction) and the first slide core (11) moves in the first direction (-x direction), so that the protruding structure of the second contact portion (122) can be inserted into the sunken area of ​​the first contact portion (112). At this time, the second slide core (12) moving in the second direction (-y direction) can press the first slide core (11) in the first direction (-x direction).

[0074] According to one embodiment of the present disclosure, the second locking surface (122b) may extend in a direction (+x direction) opposite to the first direction (-x direction) as it goes in the second direction (-y direction). The first locking surface (112b) may extend substantially parallel to the second locking surface (122b). At least a portion of the second locking surface (122b) may overlap the first locking surface (112b) in the second direction (-y direction).

[0075] According to one embodiment of the present disclosure, when the second slide core (12) moves in the second direction (-y direction), the first locking surface (112b) moves in the first direction (-y direction) along the second locking surface (122b), so that the first slide core (11) can move in the first direction (-x direction).

[0076] According to one embodiment of the present disclosure, by moving the second slide core (12) in the second direction (-y direction), the first slide core (11) can be moved in the first direction (-x direction), so that an actuator for advancing the first slide core (11) can be omitted.

[0077] In addition, according to one embodiment of the present disclosure, at least a portion of the second locking surface (122b) may overlap the first locking surface (112b) in the first direction (-x direction). Therefore, the second locking surface (122b) may suppress the first locking surface (112b) from moving in a direction opposite to the first direction (-x direction) (+x direction), thereby limiting the first slide core (11) from returning in a direction opposite to the first direction (-x direction) (+x direction).

[0078] According to one embodiment of the present disclosure, in the mold device, in the mold opening state, the first contact portion (112) and the second contact portion (122) may be partially spaced apart from each other. In the mold opening state, the first sealing surface (112c) and the second sealing surface (122c) may be spaced apart from each other. In the mold opening state, the first locking surface (112b) and the second locking surface (122b) may be partially spaced apart from each other. In the mold opening state, the recessed surface (112a) and the protruding surface (122a) may be spaced apart from each other.

[0079] According to one embodiment of the present disclosure, in the mold device, in the mold opening state, the first locking surface (112b) can maintain contact with the second locking surface (122b). When the first slide core (11) and the second slide core (12) move within their respective strokes, at least a portion of the first locking surface (112b) can contact at least a portion of the second locking surface (122b). Accordingly, the second slide core (12) can stably move the first slide core (11) in the first direction (-x direction).

[0080] According to one embodiment of the present disclosure, in the mold device, when the mold is opened, the first locking surface (112b) and the second locking surface (122b) are in contact with each other, so that the first slide core (11) and the second slide core (12) can move relative to each other in the direction in which the first locking surface (112b) and the second locking surface (122b) extend.

[0081] According to one embodiment of the present disclosure, in the mold device, in the mold opening state, the width of the first locking surface (112b) and the second locking surface (122b) may be greater than the stroke of the first slide core (11) and the second slide core (12). As an example, the width of the first locking surface (112b) and the second locking surface (122b) may be greater than the sum of the square of the stroke of the first slide core (11) and the square of the stroke of the second slide core.

[0082] According to one embodiment of the present disclosure, in a mold device, in a closed state, a first contact portion (112) and a second contact portion (122) can be in contact with each other and locked. In the closed state, a first sealing surface (112c) and a second sealing surface (122c) can be in contact with each other. In the closed state, a first locking surface (112b) and a second locking surface (122b) can be in contact with each other. In the closed state, a recessed surface (112a) and a protruding surface (122a) can be in contact with each other. Therefore, due to the locking structure between the first contact portion (112) and the second contact portion (122), a step can be suppressed from occurring at the boundary between two adjacent cavity portions (117, 127) due to a molten, high-temperature material.

[0083] According to one embodiment of the present disclosure, a hydraulic cylinder may be used as the forward and backward movement means of the slide core (11, 12, 13, 14), or a gear module composed of a rack gear and a pinion gear may be used. According to one embodiment of the present disclosure, the forward and backward movement means mechanism of the slide core is not limited thereto.

[0084] FIG. 5 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure, showing a first contact portion (1112) and a second contact portion (1122).

[0085] The description of the components (body (111, 121), sealing surface (115, 125), cavity portion (117, 127)) described with reference to FIG. 3 can be equally applied to the components illustrated with the same reference numerals in FIG. 5. Hereinafter, the first contact portion (1112) and the second contact portion (1122) will be described in detail.

[0086] Referring to FIG. 5, according to one embodiment of the present disclosure, a first contact portion (1112) may include a first sealing surface (1112c) connected to a first cavity portion (117). A first inner edge (1112d) may form a boundary between the first cavity portion (117) and the first sealing surface (1112c). The first sealing surface (1112c) may extend from the first inner edge (1112d).

[0087] According to one embodiment of the present disclosure, the first contact portion (1112) may include a recessed surface (1112a) spaced inwardly from the first sealing surface (1112c) of the first slide core (11). The recessed surface (1112a) may extend from a first outer edge (1112e) forming an edge of the first contact portion (1112).

[0088] According to one embodiment of the present disclosure, the first contact portion (1112) may include a first locking surface (1112b) connecting the first sealing surface (1112c) and the recessed surface (1112a). The first locking surface (1112b) may extend from the first sealing surface (1112c) toward the interior of the first slide core (11).

[0089] According to one embodiment of the present disclosure, the first locking surface (1112b) may be positioned closer to the first inner edge (1112d) than to the first outer edge (1112e). For example, in the direction from the first inner edge (1112d) toward the first outer edge (1112e), the width of the first sealing surface (1112c) may be smaller than the width of the recessed surface (1112a).

[0090] According to one embodiment of the present disclosure, the second contact portion (1122) may include a second sealing surface (1122c) connected to the second cavity portion (127). The second inner edge (1122d) may form a boundary between the second cavity portion (127) and the second sealing surface (1122c). The second sealing surface (1122c) may extend from the second inner edge (1122d).

[0091] According to one embodiment of the present disclosure, the second contact portion (1122) may include a protruding surface (1122a) spaced outwardly from the second sealing surface (1122c) of the second slide core (12). The protruding surface (1122a) may extend from a second outer edge (1122e) forming an edge of the second contact portion (1122).

[0092] According to one embodiment of the present disclosure, the second contact portion (1122) may include a second locking surface (1122b) connecting the second sealing surface (1122c) and the protruding surface (1122a). The second locking surface (1122b) may extend from the second sealing surface (1122c) toward the exterior of the second slide core (12). The second locking surface (1122b) may extend substantially parallel to the first locking surface (1112b).

[0093] According to one embodiment of the present disclosure, the second locking surface (1122b) may be positioned closer to the second inner edge (1122d) than to the second outer edge (1122e). For example, in the direction from the second inner edge (1122d) toward the second outer edge (1122e), the width of the second sealing surface (1112c) may be smaller than the width of the protruding surface (1122a).

[0094] According to one embodiment of the present disclosure, the first locking surface (1112b) and the recessed surface (1112a) may form a recessed portion recessed from the first sealing surface (1112c). The second locking surface (1122b) and the protruding surface (1122a) may form a protruding portion protruding from the second sealing surface (1122c) and inserted into the recessed portion. Accordingly, the first contact portion (1112) and the second contact portion (1122) may be locked to each other.

[0095] According to one embodiment of the present disclosure, since the contacting area of ​​the first locking surface (1112b) and the second locking surface (1122b) is positioned adjacent to the cavity (C), it is possible to effectively suppress the occurrence of a step at the boundary between two adjacent cavity portions (117, 118) due to a high-temperature molten material.

[0096] FIG. 6 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure, showing a first contact portion (2112) and a second contact portion (2122).

[0097] The description of the components (body (111, 121), sealing surface (115, 125), cavity portion (117, 127)) described with reference to FIG. 3 can be equally applied to the components illustrated with the same reference numerals in FIG. 6. Hereinafter, the first contact portion (2112) and the second contact portion (2122) will be described in detail.

[0098] Referring to FIG. 6, according to one embodiment of the present disclosure, the first contact portion (2112) may include a first sealing surface (2112c) connected to the first cavity portion (117). The first inner edge (2112d) may form a boundary between the first cavity portion (117) and the first sealing surface (2112c). The first sealing surface (2112c) may extend from the first inner edge (2112d).

[0099] According to one embodiment of the present disclosure, the first contact portion (2112) may include a recessed surface (2112a) spaced inwardly from the first sealing surface (2112c) of the first slide core (11). The recessed surface (2112a) may extend from a first outer edge (2112e) forming an edge of the first contact portion (2112).

[0100] According to one embodiment of the present disclosure, the first contact portion (2112) may include a first locking surface (2112b) connecting the first sealing surface (2112c) and the recessed surface (2112a). The first locking surface (2112b) may extend from the first sealing surface (2112c) toward the interior of the first slide core (11).

[0101] According to one embodiment of the present disclosure, the first locking surface (2112b) may be positioned further from the first inner edge (2112d) than from the first outer edge (2112e). For example, in the direction from the first inner edge (2112d) toward the first outer edge (2112e), the width of the first sealing surface (2112c) may be greater than the width of the recessed surface (2112a).

[0102] According to one embodiment of the present disclosure, the second contact portion (2122) may include a second sealing surface (2122c) connected to the second cavity portion (127). The second inner edge (2122d) may form a boundary between the second cavity portion (127) and the second sealing surface (2122c). The second sealing surface (2122c) may extend from the second inner edge (2122d).

[0103] According to one embodiment of the present disclosure, the second contact portion (2122) may include a protruding surface (2122a) spaced outwardly from the second sealing surface (2122c) of the second slide core (12). The protruding surface (2122a) may extend from a second outer edge (2122e) forming an edge of the second contact portion (2122).

[0104] According to one embodiment of the present disclosure, the second contact portion (2122) may include a second locking surface (2122b) connecting the second sealing surface (2122c) and the protruding surface (2122a). The second locking surface (2122b) may extend from the second sealing surface (2122c) toward the exterior of the second slide core (12). The second locking surface (2122b) may extend substantially parallel to the first locking surface (2112b).

[0105] According to one embodiment of the present disclosure, the second locking surface (2122b) may be positioned further from the second inner edge (2122d) than from the second outer edge (2122e). For example, in the direction from the second inner edge (2122d) toward the second outer edge (2122e), the width of the second sealing surface (2112c) may be greater than the width of the protruding surface (2122a).

[0106] According to one embodiment of the present disclosure, the first locking surface (2112b) and the recessed surface (2112a) may form a recessed portion recessed from the first sealing surface (2112c). The second locking surface (2122b) and the protruding surface (2122a) may form a protruding portion protruding from the second sealing surface (2122c) and inserted into the recessed portion. Accordingly, the first contact portion (2112) and the second contact portion (2122) may be locked to each other.

[0107] FIG. 7 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure, showing a first contact portion (3112) and a second contact portion (3122).

[0108] The description of the components (body (111, 121), sealing surface (115, 125), cavity portion (117, 127)) described with reference to FIG. 3 can be equally applied to the components of the same name (body (111`, 121`), sealing surface (115`, 125`), cavity portion (3117, 3127)) depicted in FIG. 7. Hereinafter, the first contact portion (3112) and the second contact portion (3122) will be described in detail.

[0109] Referring to FIG. 7, according to one embodiment of the present disclosure, a first contact portion (3112) may include a first sealing surface (3112c) connected to a first cavity portion (3117). A first inner edge (3112d) may form a boundary between the first cavity portion (3117) and the first sealing surface (3112c). The first sealing surface (3112c) may extend from the first inner edge (3112d).

[0110] According to one embodiment of the present disclosure, the first contact portion (3112) may include a recessed surface (3112a) spaced inwardly from the first sealing surface (3112c) of the first slide core (11). The recessed surface (3112a) may extend from a first outer edge (3112e) forming an edge of the first contact portion (3112).

[0111] According to one embodiment of the present disclosure, the first contact portion (3112) may include a first locking surface (3112b) connecting the first sealing surface (3112c) and the recessed surface (3112a). The first locking surface (3112b) may extend from the first sealing surface (3112c) toward the interior of the first slide core (11).

[0112] According to one embodiment of the present disclosure, the second contact portion (3122) may include a second sealing surface (3122c) connected to a second cavity portion (3127). A second inner edge (3122d) may form a boundary between the second cavity portion (3127) and the second sealing surface (3122c). The second sealing surface (3122c) may extend from the second inner edge (3122d).

[0113] According to one embodiment of the present disclosure, the second contact portion (3122) may include a protruding surface (3122a) spaced outwardly from the second sealing surface (3122c) of the second slide core (12). The protruding surface (3122a) may extend from a second outer edge (3122e) forming an edge of the second contact portion (3122).

[0114] According to one embodiment of the present disclosure, the second contact portion (3122) may include a second locking surface (3122b) connecting the second sealing surface (3122c) and the protruding surface (3122a). The second locking surface (3122b) may extend from the second sealing surface (3122c) toward the exterior of the second slide core (12). The second locking surface (3122b) may extend substantially parallel to the first locking surface (3112b).

[0115] According to one embodiment of the present disclosure, the first locking surface (3112b) and the recessed surface (3112a) may form a recessed portion recessed from the first sealing surface (3112c). The second locking surface (3122b) and the protruding surface (3122a) may form a protruding portion protruding from the second sealing surface (3122c) and inserted into the recessed portion. Accordingly, the first contact portion (3112) and the second contact portion (3122) may be locked to each other.

[0116] According to one embodiment of the present disclosure, the first locking surface (3112b) may extend obliquely with respect to the first direction (-x direction), which is the moving direction of the first slide core (11). The second locking surface (3122b) may extend obliquely with respect to the second direction (-y direction), which is the moving direction of the second slide core (12).

[0117] According to one embodiment of the present disclosure, since the contact between the first locking surface (3112b) and the second locking surface (3122b) that are parallel to each other is maintained, the first slide core (11) and the second slide core (12) can move relative to each other in the direction in which the first locking surface (3112b) and the second locking surface (3122b) extend.

[0118] According to one embodiment of the present disclosure, the angle at which the first locking surface (3112b) and the second locking surface (3122b) are inclined with respect to the first direction (-x direction) may be different from the angle at which they are inclined with respect to the second direction (-y direction). Accordingly, the distances at which the first slide core (11) and the second slide core (12) advance and retreat may be different from each other.

[0119] As an example, FIG. 7 illustrates a case where the angle at which the first locking surface (3112b) and the second locking surface (3122b) are inclined with respect to the first direction (-x direction) is smaller than the angle at which the first locking surface (3112b) is inclined with respect to the second direction (-y direction). Referring to FIG. 7, when the second slide core (12) moves in the second direction (-y direction) by a first distance (l1), the first slide core (11) can move in the first direction (-x direction) by a second distance (l2) that is longer than the first distance (l1). That is, the stroke of the first slide core (11) can be longer than the stroke of the second slide core (12). Therefore, the stroke ratios of the two adjacent slide cores (11, 12) can be set differently.

[0120] FIG. 8 is an enlarged view of a portion of a mold device according to one embodiment of the present disclosure, wherein the solid line portion illustrates the mold device in an open state, and the dotted line portion illustrates the mold device in a closed state.

[0121] The description of the components (slide cores (11, 12), bodies (111, 121), sealing surfaces (115, 125), cavity portions (117, 127)) described with reference to FIG. 3 can be equally applied to the components of the same names (slide cores (411, 412), bodies (4111, 4121), sealing surfaces (4115, 4125), cavity portions (4117, 4127)) depicted in FIG. 8. Hereinafter, the first contact portion (4112) and the second contact portion (4122) will be described in detail.

[0122] Referring to FIG. 8, according to one embodiment of the present disclosure, a first contact portion (4112) may include a first sealing surface (4112c) connected to a first cavity portion (4117). A first inner edge (4112d) may form a boundary between the first cavity portion (4117) and the first sealing surface (4112c). The first sealing surface (4112c) may extend from the first inner edge (4112d).

[0123] According to one embodiment of the present disclosure, the first contact portion (4112) may include a protruding surface (4112a) spaced outwardly from the first sealing surface (4112c) of the first slide core (411). The protruding surface (4112a) may extend from a first outer edge (4112e) forming an edge of the first contact portion (4112).

[0124] According to one embodiment of the present disclosure, the first contact portion (4112) may include a first locking surface (4112b) connecting the first sealing surface (4112c) and the protruding surface (4112a). The first locking surface (4112b) may extend from the first sealing surface (4112c) toward the outside of the first slide core (411).

[0125] According to one embodiment of the present disclosure, the second contact portion (4122) may include a second sealing surface (4122c) connected to a second cavity portion (4127). A second inner edge (4122d) may form a boundary between the second cavity portion (4127) and the second sealing surface (4122c). The second sealing surface (4122c) may extend from the second inner edge (4122d).

[0126] According to one embodiment of the present disclosure, the second contact portion (4122) may include a recessed surface (4122a) spaced inwardly from the second sealing surface (4122c) of the second slide core (12). The recessed surface (4122a) may extend from a second outer edge (4122e) forming an edge of the second contact portion (4122).

[0127] According to one embodiment of the present disclosure, the second contact portion (4122) may include a second locking surface (4122b) connecting the second sealing surface (4122c) and the recessed surface (4122a). The second locking surface (4122b) may extend from the second sealing surface (4122c) toward the interior of the second slide core (12). The second locking surface (4122b) may extend substantially parallel to the first locking surface (4112b).

[0128] According to one embodiment of the present disclosure, the first locking surface (4112b) and the protruding surface (4112a) may form a protruding portion protruding from the first sealing surface (4112c). The second locking surface (4122b) and the recessed surface (4122a) may form a recessed portion recessed from the second sealing surface (4122c). Accordingly, the first contact portion (4112) and the second contact portion (4122) may be locked to each other.

[0129] According to one embodiment of the present disclosure, the moving direction of the first slide core (411) and the moving direction of the second slide core (412) may intersect with each other. The first cavity portion (4117) and the second cavity portion (4127) may intersect with each other. For example, the moving direction of the first slide core (411) and the moving direction of the second slide core (412) may intersect with each other at an obtuse angle, and the first cavity portion (4117) and the second cavity portion (4127) may intersect with each other at an acute angle.

[0130] Fig. 9 is a drawing showing a mold opening state of a mold device according to one embodiment of the present disclosure. Fig. 10 is a drawing showing a mold closing state of a mold device according to one embodiment of the present disclosure.

[0131] The description of the components (slide cores (11, 12, 13, 14), bodies (111, 121, 131, 141), sealing surfaces (115, 125, 135, 145)) described with reference to FIGS. 1 and 2 can be equally applied to the components of the same names (slide cores (511, 512, 513, 514), bodies (5111, 5121, 5131, 5141), sealing surfaces (5115, 5125, 5135, 5145)) depicted in FIGS. 9 and 10.

[0132] In addition, the description of the first contact portion (112) described with reference to FIGS. 1 to 4 can be equally applied to the contact portions (5122, 5132, 5142, 5113) of the sunken structure. The description of the second contact portion (122) described with reference to FIGS. 1 to 4 can be equally applied to the contact portions (5112, 5123, 5133, 5143) of the protruding structure.

[0133] Below, the plurality of slide cores (511, 512, 513, 514) and contact portions (5112, 5113, 5122, 5123, 5132, 5133, 5142, 5143) are described in detail.

[0134] According to one embodiment of the present disclosure, the first slide core (511) may include a first contact portion (5112) of a protruding structure and an eighth contact portion (5113) of a recessed structure. The second slide core (512) may include a third contact portion (5123) of a protruding structure and a second contact portion (5122) of a recessed structure. The third slide core (513) may include a fifth contact portion (5133) of a protruding structure and a fourth contact portion (5132) of a recessed structure. The fourth slide core (514) may include a seventh contact portion (5143) of a protruding structure and a sixth contact portion (5142) of a recessed structure.

[0135] According to one embodiment of the present disclosure, a first contact portion (5112) of the protruding structure can be coupled with a second contact portion (5122) of the recessed structure. A third contact portion (5123) of the protruding structure can be coupled with a fourth contact portion (5132) of the recessed structure. A fifth contact portion (5133) of the protruding structure can be coupled with a sixth contact portion (5142) of the recessed structure. A seventh contact portion (5143) of the protruding structure can be coupled with an eighth contact portion (5123) of the recessed structure.

[0136] According to one embodiment of the present disclosure, when the first slide core (511) moves in the first direction (-x direction), the first contact portion (5112) can push the second contact portion (5122) in the second direction. When the second slide core (512) moves in the second direction (-y direction), the third contact portion (5123) can push the fourth contact portion (5132) in the third direction (+x direction). When the third slide core (513) moves in the third direction (+x direction), the fifth contact portion (5133) can push the sixth contact portion (5142) in the fourth direction (+y direction). When the fourth slide core (514) moves in the fourth direction (+y direction), the seventh contact portion (5143) can push the eighth contact portion (5123) in the first direction (-x direction). Therefore, the movements of multiple slide cores (511, 512, 513, 514) can be linked to each other.

[0137] Fig. 11 is a perspective view showing an open state of a mold device according to one embodiment of the present disclosure. Fig. 12 is a perspective view showing a closed state of a mold device according to one embodiment of the present disclosure. In Figs. 11 and 12, for convenience of explanation, only a locking block (40) corresponding to a portion of a plurality of slide cores (11, 12, 13, 14) is illustrated.

[0138] Referring to FIGS. 11 and 12, a mold device according to one embodiment of the present disclosure may include a locking block (40) that advances a slide core (11, 12, 13, 14). The number of locking blocks (40) may be plural, corresponding to each of the plurality of slide cores (11, 12, 13, 14). In addition, depending on the shape and size of the slide core (11, 12, 13, 14), one slide core (11, 12, 13, 14) may be advanced through a plurality (e.g., two) of locking blocks (40).

[0139] According to one embodiment of the present disclosure, the locking block (40) can move in a direction (z-axis direction) intersecting the moving direction of the plurality of slide cores (11, 12, 13, 14). The locking block (40) can advance the slide cores (11, 12, 13, 14) by contacting the mating surfaces (118, 128, 138, 148) of the slide cores (11, 12, 13, 14). The plurality of slide cores (11, 12, 13, 14) advanced by the plurality of locking blocks (40) can contact each other to form a cavity (C).

[0140] Fig. 13 is a perspective cross-sectional view showing a cross-section of a locking block (40) according to one embodiment of the present disclosure. Referring to Fig. 13, the locking block (41) may include a head (45) having a screw (451) formed on the surface and a body (42) extending long from the head (45).

[0141] According to one embodiment of the present disclosure, the head (45) may include a screw (451) that is spirally wound along the direction of movement (z-axis direction) of the locking block (40). The screw (451) may be coupled to the mold plate (20, see FIG. 14). The head (45) is coupled to the mold plate (20) by rotating around the z-axis, and thus the locking block (40) may move along the z-axis.

[0142] According to one embodiment of the present disclosure, a user can adjust the position of the locking block (40) by rotating the locking block (40), thereby adjusting the stroke length of the slide core (11, 12, 13, 14) that advances by the locking block (40). As an example, a user can insert a wrench (W) into a hole (43) formed in the locking block (40) and rotate the wrench (W) to move the locking block (40) along the z-axis.

[0143] According to one embodiment of the present disclosure, the body (42) may include an upper part (422) connected to a head (45) and a lower part (421) that contacts a mating surface (118, 128, 138, 148) of a slide core (11, 12, 13, 14). The upper part (422) may constitute one side of the body (42), and the lower part (421) may constitute the other side of the body (42).

[0144] According to one embodiment of the present disclosure, the lower part (421) may have a circular cross-section. The upper part (422) may also have a circular cross-section, but the cross-section of the upper part (422) is not limited to a circular cross-section. The cross-section of the lower part (421) may expand as it approaches the head (45).

[0145] According to one embodiment of the present disclosure, the outer lateral surface of the lower part (421) can be inclined with respect to the movement direction (z-axis direction) of the locking block (40). The outer lateral surface of the lower part (421) can be inclined at a predetermined angle (a) with respect to the movement direction (e.g., x-axis direction or y-axis direction) of the plurality of slide cores (11, 12, 13, 14).

[0146] According to one embodiment of the present disclosure, the outer surface of the lower part (421) can be fitted to the mating surface (118, 128, 138, 148) of the slide core (11, 12, 13, 14). The mating surface (118, 128, 138, 148) of the slide core (11, 12, 13, 14) can have a shape corresponding to the outer surface of the lower part (421).

[0147] According to one embodiment of the present disclosure, the lower part (421) may include a hole (43). The hole (43) may function as a part that is connected to a tool (e.g., a wrench (W)) for rotating the locking block (40). The hole (43) may be located on the central axis (e.g., the z-axis) of the locking block (40). The hole (43) may be formed at a position facing the head (45) with respect to the upper part (422).

[0148] According to one embodiment of the present disclosure, the locking block (40) may include a washer (41). The washer (41) may be positioned adjacent to the head (45). The washer (41) may be supported by the body (42). The washer (41) may be disposed between one surface of the mold plate (20) and the body (42), and one side of the washer (41) may be supported by the one surface of the mold plate (20) and the other side of the washer (42). As an example, the washer (41) may be a spring washer. The screw (451) may be brought into close contact with the fastening surface (25, see FIGS. 14 and 15) of the mold plate (20) by the washer (41).

[0149] FIG. 14 is a cross-sectional view of a portion of a mold device in an open state according to one embodiment of the present disclosure. FIG. 15 is a cross-sectional view of a portion of a mold device in a closed state according to one embodiment of the present disclosure.

[0150] Hereinafter, with reference to FIGS. 14 and 15, the first slide core (11) is moved forward by the locking block (40). However, this description can be equally applied to the second slide core (12), the third slide core (13), and the fourth slide core (14) being moved forward by the locking block (40).

[0151] Referring to FIGS. 14 and 15, a mold device according to one embodiment of the present disclosure may include a first mold plate (30) and a second mold plate (20) facing each other. The first mold plate (30) and the second mold plate (20) may be referred to as, but are not limited to, a core plate, a cavity plate, a bottom plate, a top plate, etc.

[0152] According to one embodiment of the present disclosure, the first mold plate (30) and the second mold plate (20) can move relative to each other to move away from or closer to each other. The first mold plate (30) and the second mold plate (20) can be spaced apart from each other in the mold-opened state to open the cavity (C). The first mold plate (30) and the second mold plate (20) can contact each other in the mold-closed state to seal the cavity (C).

[0153] According to one embodiment of the present disclosure, a plurality of slide cores (11, 12, 13, 14) may be movably arranged on one of two mold plates (20, 30) facing each other. As an example, FIGS. 14 and 15 illustrate a case where a plurality of slide cores (11, 12, 13, 14) are movably arranged on a first mold plate (30) and a locking block (40) is arranged on a second mold plate (20). However, unlike as illustrated in FIGS. 14 and 15, it is of course possible for a locking block (40) to be arranged on the first mold plate (30) and a plurality of slide cores (11, 12, 13, 14) to be movably arranged on the second mold plate (20).

[0154] According to one embodiment of the present disclosure, the first mold plate (30) may include a first cavity portion (31) configured to form a cavity (C), a first sealing surface (32) connected to the first cavity portion (31) and in contact with the slide core (11). The second mold plate (20) may include a second cavity portion (21) facing the first cavity portion (31) and configured to form a cavity (C), and a second sealing surface (22) connected to the second cavity portion (21) and in contact with the slide core (11).

[0155] According to one embodiment of the present disclosure, the first sealing surface (32) may extend from the periphery of the first cavity portion (31). The second sealing surface (22) may extend from the periphery of the second cavity portion (21). The first sealing surface (32) and the second sealing surface (22) may contact the sealing surfaces (115, 116) of the slide core (11) to seal the cavity (C).

[0156] According to one embodiment of the present disclosure, a plurality of slide cores (11, 12, 13, 14) may be arranged to surround a first cavity portion (31). A plurality of slide cores (11, 12, 13, 14) may be arranged to surround a second cavity portion (21). The cavity portions (117, 127, 137, 147) of the plurality of slide cores (11, 12, 13, 14) and the cavity portions (31, 21) of the first and second mold plates may form a cavity (C).

[0157] According to one embodiment of the present disclosure, a plurality of slide cores (11, 12, 13, 14) can move in a direction intersecting the moving direction (z-axis) of the mold plate (20, 30). As an example, the second mold plate (20) can move in the z-axis direction, and the plurality of slide cores (11, 12, 13, 14) can move in the x-axis and y-axis directions perpendicular to the z-axis direction.

[0158] According to one embodiment of the present disclosure, the first mold plate (30) may include a support surface (33) that supports an elastic member (119) and a rail (34) that forms a movement path of the slide core (11). The support surface (33) may face the slide core (11). The slide core (11) may move along the rail (34). The ribs (114, 124, 134, 144) of the slide cores (11, 12, 13, 14) are inserted into the rail (34), and the slide cores (11, 12, 13, 14) may move along the rail (34).

[0159] According to one embodiment of the present disclosure, the second mold plate (20) may include a fastening surface (25) to which a screw (451) of a locking block (40) is fastened, and a guide surface (26) that guides movement of the locking block (40). The fastening surface (25) may include a groove having a shape corresponding to the screw (451). The guide surface (26) may extend along the movement direction of the locking block (40). As an example, the guide surface (26) may extend in the z-axis direction.

[0160] According to one embodiment of the present disclosure, foreign matter such as a parting line may be formed on the injection-molded product (P) at least in one of the first boundary between the first slide core (11) and the second slide core (12) in contact with each other, the second boundary between the first slide core (11) and the mold plate (20, 30) in contact with each other, and the third boundary between the second slide core (12) and the mold plate (20, 30) in contact with each other due to thermal expansion of the mold device, accumulation of tolerance during the assembly process, or inaccurate position control.

[0161] If, unlike the mold device according to one embodiment of the present disclosure, two slide cores in contact with each other are not locked to each other, when one of the slide cores is moved to remove the step that occurred at the first boundary, a step may occur at the boundary between the one of the slide cores and the mold plate. As another example, when the slide core is moved to remove the step that occurred at the second boundary or the third boundary, a step may occur at the first boundary.

[0162] According to one embodiment of the present disclosure, since the first slide core (11) and the second slide core (12) are locked to each other and move forward simultaneously, in the process of removing a step generated at some of the first, second, and third boundaries, it is possible to prevent a step from occurring at another boundary.

[0163] According to one embodiment of the present disclosure, an elastic member (24) may be placed on a second mold plate (20). One side of the elastic member (24) may be supported by a support surface (23), and the other side may be in contact with a head (45) of a locking block (40). As an example, the elastic member (24) may be a spring. The elastic member (24) may provide elastic force to the head (45). The screw (451) may be brought into close contact with the groove formed in the fastening surface (25) by the elastic member (24).

[0164] A mold device according to one embodiment of the present disclosure may include a stopper (50) that restricts movement of a slide core (11). The stopper (50) may be located at the rear of the slide core (11). The stopper (50) may be fixed to a first mold plate (30). The stroke length of the slide core (11) may be determined by the position of the stopper (50).

[0165] According to one embodiment of the present disclosure, in the open state, the stopper (50) can contact each of the slide cores (11, 12, 13, 14). In the closed state, the stopper (50) can be spaced apart from the mating surfaces (118, 128, 138, 148) of each of the slide cores (11, 12, 13, 14).

[0166] According to one embodiment of the present disclosure, the slide core (11) may include an elastic member (119). The elastic member (119) may provide elastic force to the slide core (11). As an example, the elastic member (119) may be a spring whose one end is supported by the support surface (33) of the first mold plate (30) and whose other end is in contact with the slide core (11).

[0167] According to one embodiment of the present disclosure, the slide core (11) can be moved from a position in a closed state to a position in an open state by an elastic member (119). As an example, when the slide core (11) is to be retracted upward, an elastic force greater than the load of the slide core (11) due to gravity must be provided, and therefore, the elastic member (119) may be a heavy-duty spring.

[0168] According to one embodiment of the present disclosure, the elastic member (119) and the stopper (40) may be positioned at opposing positions with respect to the slide core (11). The slide core (11) retracted by the elastic member (119) may have its movement restricted by the stopper (40).

[0169] Fig. 16 is a cross-sectional view showing an increase in the stroke of a slide core through a locking block according to one embodiment of the present disclosure. Fig. 16 illustrates a portion of a mold device in a closed state.

[0170] Referring to FIGS. 15 and 16, according to one embodiment of the present disclosure, the locking block (40) can move in a direction intersecting the moving direction of the first slide core (11). As an example, the first slide core (11) can move (forward or backward) in the x-axis direction, and the locking block (40) can move (raise or lower) in the z-axis direction perpendicular to the x-axis direction.

[0171] According to one embodiment of the present disclosure, when the locking block (40) is lowered a predetermined distance (h1) in the -z direction with respect to the second mold plate (20), the first slide core (11) advances a predetermined distance (d1) in the -x direction, and the stroke of the first slide core (11) can increase by the predetermined distance (d1). Accordingly, a step that may occur at the boundary of the cavity portion (117) of the first slide core (11) can be minimized.

[0172] According to one embodiment of the present disclosure, the increase in the stroke of the first slide core (11) as the locking block (40) descends can be determined by the pitch of the screw (451), the gradient of the mating surface (118) of the first slide core (11), etc.

[0173] Fig. 17 is a cross-sectional view showing a stroke reduction of a slide core through a locking block according to one embodiment of the present disclosure. Fig. 17 illustrates a portion of a mold device in a closed state.

[0174] Referring to FIGS. 15 and 17, according to one embodiment of the present disclosure, the locking block (40) can move in a direction intersecting the moving direction of the first slide core (11). As an example, the first slide core (11) can move (forward or backward) in the x-axis direction, and the locking block (40) can move (raise or lower) in the z-axis direction perpendicular to the x-axis direction.

[0175] According to one embodiment of the present disclosure, when the locking block (40) is raised and lowered a predetermined distance (h2) in the +z direction with respect to the second mold plate (20), the first slide core (11) moves backward a predetermined distance (d2) in the +x direction, and the stroke of the first slide core (11) can be reduced by a predetermined distance (d2).

[0176] According to one embodiment of the present disclosure, the decrease in the stroke of the first slide core (11) as the locking block (40) is raised or lowered can be determined by the pitch of the screw (451), the gradient of the mating surface (118) of the first slide core (11), etc.

[0177] According to one embodiment of the present disclosure, FIGS. 15 to 17 only represent the first slide core (11) and the locking block (40), and the description regarding stroke adjustment of the first slide core (11) with reference to FIGS. 15 to 17 can be equally applied to the second, third, and fourth slide cores (12, 13, 14).

[0178] By injecting and hardening molten material in a closed mold state, a mark called a "parting line" may be created on the surface of the molded injection molded product, for example, at the boundary where the cores come into contact with each other. In addition, the parting line may become larger due to the injection pressure of the molten material, or foreign substances called "flash" or "burrs" may be created on the surface of the injection molded product. As the shape of the injection molded product to be manufactured becomes more complex, the number and distribution of parting lines (or the number of cores) may increase, and the possibility of foreign substances occurring on the surface of the injection molded product may increase in insert injection molding. In addition, a post-process may be performed to remove the parting line, flash, burrs, etc.

[0179] The present disclosure is intended to at least resolve the above-described problems and / or disadvantages and provide at least the advantages described below, and a problem to be solved in the present disclosure may be minimizing the occurrence of a step difference at the boundary between two adjacent slide cores due to a high-temperature molten material.

[0180] The problem to be solved in the present disclosure may be to simultaneously control the stroke of two adjacent slide cores.

[0181] The problem to be solved in the present disclosure may be to simultaneously control the step difference occurring at the boundaries of a mold plate (or core) forming a cavity and a plurality of slide cores.

[0182] One embodiment of the present disclosure may be to miniaturize a mold device by simplifying a structure for advancing and retracting a slide core.

[0183] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0184] A mold device according to one embodiment of the present disclosure can minimize a step difference between two adjacent slide cores occurring at a boundary between the two adjacent slide cores by joining the contact portions of the two adjacent slide cores to each other.

[0185] A mold device according to one embodiment of the present disclosure can simultaneously control the stroke of two slide cores by linking the movement of two adjacent slide cores.

[0186] A mold device according to one embodiment of the present disclosure can simultaneously minimize steps occurring at boundaries between a mold plate (or core) and a plurality of slide cores.

[0187] A mold device according to one embodiment of the present disclosure can be reduced in size by simplifying a structure capable of advancing and retracting a slide core.

[0188] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0189] A mold device according to one embodiment of the present disclosure may include a first core (11) that is movable along a first direction and includes a first contact portion (112; 1112; 2112; 3112; 4122).

[0190] A mold device according to one embodiment of the present disclosure may include a second core (12) that is movable along a second direction intersecting the first direction and includes a second contact portion (122; 1122; 2122; 3122; 4112) facing a first contact portion (112; 1112; 2112; 3112; 4122).

[0191] A first contact portion (112; 1112; 2112; 3112; 4122) according to one embodiment of the present disclosure may include a first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) extending from a first inner edge (112d; 1112d; 2112d; 3112d; 4122d) formed to define at least a portion of a cavity (C).

[0192] A first contact portion (112; 1112; 2112; 3112; 4122) according to one embodiment of the present disclosure may include a first locking surface (112b; 1112b; 2112b; 3112b; 4122b) extending from a first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) toward the inside of the first core (11).

[0193] A second contact portion (122; 1122; 2122; 3122; 4112) according to one embodiment of the present disclosure may include a second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) extending from a second inner edge (122d; 1122d; 2122d; 3122d; 4112d) formed to define at least a portion of the cavity (C) and configured to contact the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c).

[0194] A second contact portion (122; 1122; 2122; 3122; 4112) according to one embodiment of the present disclosure may include a second locking surface (122b; 1122b; 2122b; 3122b; 4112b) extending from the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) toward the first contact portion (112; 1112; 2112; 3112; 4122) and configured such that at least a portion thereof contacts the first locking surface (112b; 1112b; 2112b; 3112b; 4122b).

[0195] According to one embodiment of the present disclosure, the first contact portion (112; 1112; 2112; 3112; 4122) may include a recessed surface (112a; 1112a; 2112a; 3112a; 4122a) extending from the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) and spaced apart from the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) toward the inside of the first core (11).

[0196] A second contact portion (122; 1122; 2122; 3122; 4112) according to one embodiment of the present disclosure may include a protruding surface (122a; 1122a; 2122a; 3122a; 4112a) extending from the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) and spaced outward from the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c).

[0197] In one embodiment of the present disclosure, the mold device may be configured such that, in a mold opening state, the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) and the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) may be spaced apart from each other.

[0198] In a mold device according to one embodiment of the present disclosure, in a mold opening state, the protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the recessed surface (112a; 1112a; 2112a; 3112a; 4122a) can be spaced apart from each other.

[0199] In a mold device according to one embodiment of the present disclosure, in a mold opening state, the outer end of the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) can overlap with the outer end of the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) in the first direction.

[0200] In one embodiment of the present disclosure, the mold device may have the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) and the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) overlap each other at least partially in the first direction.

[0201] In one embodiment of the present disclosure, the mold device is such that, in a closed state, the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) and the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) can contact each other.

[0202] In a mold device according to one embodiment of the present disclosure, in a closed state, the protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the recessed surface (112a; 1112a; 2112a; 3112a; 4122a) can contact each other.

[0203] In a mold device according to one embodiment of the present disclosure, the protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the recessed surface (112a; 1112a; 2112a; 3112a; 4122a) may be parallel to each other.

[0204] According to one embodiment of the present disclosure, when the second slide core (12) moves along the second direction, the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) can press the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) toward the first direction.

[0205] In one embodiment of the mold device of the present disclosure, the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) may extend in a third direction opposite to the first direction as it goes in the second direction.

[0206] A mold device according to one embodiment of the present disclosure may include an elastic member (119) that presses the first slide core (11) in a third direction opposite to the first direction.

[0207] In one embodiment of the present disclosure, the mold device may have the recessed surface (112a; 1112a; 2112a; 3112a; 4122a) form a first outer edge (112e; 1112e; 2112e; 3112e; 4122e) of the first contact portion (112; 1112; 2112; 3112; 4122).

[0208] In one embodiment of the present disclosure, the mold device may have the protruding surface (122a; 1122a; 2122a; 3122a; 4112a) form a second outer edge (122e; 1122e; 2122e; 3122e; 4112e) of the second contact portion (122; 1122; 2122; 3122; 4112).

[0209] In a mold device according to one embodiment of the present disclosure, a width of the first sealing surface (112c) extending from the first inner edge (112d) to the first locking surface (112b) may be smaller than a width of the recessed surface (112a) extending from the first locking surface (112b) to the first outer edge (112e).

[0210] In a mold device according to one embodiment of the present disclosure, a width of the second sealing surface (122c) extending from the second inner edge (122d) to the second locking surface (122b) may be smaller than a width of the protruding surface (122a) extending from the second locking surface (122b) to the second outer edge (122e).

[0211] In one embodiment of the present disclosure, the mold device may have the first direction and the second direction intersect at an obtuse angle.

[0212] A mold device according to one embodiment of the present disclosure may include a first mold plate (30) including a first cavity portion (31) and a first slide core (11) and a second slide core (12) slidably arranged around the first cavity portion (31).

[0213] A mold device according to one embodiment of the present disclosure may include a second mold plate (20) including a second cavity portion (21) configured to face the first cavity portion (31) and define the cavity (C) between the first cavity portion (31).

[0214] A mold device according to one embodiment of the present disclosure may include a locking block (40) that is movably coupled to the second mold plate (20) in a third direction orthogonal to the first and second directions and configured to move the second slide core (12) in the second direction.

[0215] A locking block (40) according to one embodiment of the present disclosure may include a head (45) coupled to the second mold plate (20) and having a spiral screw (451) formed thereon extending along the third direction.

[0216] A locking block (40) according to one embodiment of the present disclosure may include a body (42) extending from the head (45) toward the second slide core (12) and having a circular cross-section.

[0217] A mold device according to one embodiment of the present disclosure comprises: a first slide core (11) movable along a first direction and including a first contact portion (112); a second slide core (12) movable along a second direction intersecting the first direction and including a second contact portion (122) configured to contact the first contact portion (112), the second slide core (12) including a third contact portion (123); And a third slide core (13) including a fourth contact portion (132) that is movable along a third direction intersecting the second direction and configured to contact the third contact portion (123), wherein the first slide core (11) includes a first recessed portion recessed inwardly from the first contact portion (112), the third slide core (13) includes a second recessed portion recessed inwardly from the fourth contact portion (132), and the second slide core (12) may include: a first protruding portion formed in the second contact portion (122) and inserted into the first recessed portion; and a second protruding portion formed in the third contact portion (123) and inserted into the second recessed portion.

[0218] According to one embodiment of the present disclosure, the mold device is such that when the second slide core (12) moves in the second direction: the first protruding portion can press the first depressed portion in the first direction, and the second protruding portion can press the second depressed portion in the third direction.

[0219] According to one embodiment of the present disclosure, the first recessed portion may include a first locking surface that contacts the first protruding portion and is inclined with respect to the second direction.

[0220] According to one embodiment of the present disclosure, the second recessed portion may include a second locking surface that contacts the second protruding portion and is inclined with respect to the second direction.

[0221] In one embodiment of the present disclosure, the mold device may have an angle at which the first locking surface is inclined with respect to the second direction that is equal to an angle at which the second locking surface is inclined with respect to the second direction.

[0222] A mold device according to one embodiment of the present disclosure comprises: a first slide core (511) movable along a first direction and including a first contact portion (5112); a second slide core (512) movable along a second direction intersecting the first direction and including a second contact portion (5122) configured to contact the first contact portion (5112), the second slide core (512) including a third contact portion (5123); And a third slide core (513) including a fourth contact portion (5132) that is movable along a third direction intersecting the second direction and configured to contact the third contact portion (5123), wherein the first slide core (511) includes a first protruding portion formed on the first contact portion (5112) and protruding outwardly of the first slide core, the second slide core (512) includes a first recessed portion formed on the second contact portion (5122) and into which the first protruding portion is inserted; and a second protruding portion formed on the third contact portion (5123) and protruding outwardly of the second slide core, and the third slide core (513) may include a second recessed portion formed on the fourth contact portion (5132) and into which the second protruding portion is inserted.

[0223] According to one embodiment of the present disclosure, the mold device can cause the first protruding portion to press the first depressed portion in the second direction when the first slide core (511) moves in the first direction.

[0224] In one embodiment of the present disclosure, the mold device can have the second protruding portion press the second depressed portion in the third direction when the first slide core (511) moves in the first direction.

[0225] Although the detailed description of this document has described specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of this document.

Claims

1. In the mold device, A first slide core (11) movable along a first direction and including a first contact portion (112; 1112; 2112; 3112; 4122); and A second slide core (12) is movable along a second direction intersecting with the first direction and includes a second contact portion (122; 1122; 2122; 3122; 4112) facing the first contact portion (112; 1112; 2112; 3112; 4122). The above first contact portion (112; 1112; 2112; 3112; 4122): A first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) extending from a first inner edge (112d; 1112d; 2112d; 3112d; 4122d) formed to define at least a portion of a cavity (C); and It includes a first locking surface (112b; 1112b; 2112b; 3112b; 4122b) extending from the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) toward the inside of the first slide core (11), The above second contact portion (122; 1122; 2122; 3122; 4112): A second sealing surface (122c; 1122c; 2122d; 3122d; 4112d) extending from a second inner edge (122d; 1122d; 2122d; 3122d; 4112d) formed to define at least a portion of the cavity (C) and configured to contact the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c); and A mold device including a second locking surface (122b; 1122b; 2122b; 3122b; 4112b) extending from the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) toward the first contact portion (112; 1112; 2112; 3112; 4122) and configured so that at least a portion of the second locking surface (112b; 1112b; 2112b; 3112b; 4122b) contacts the first locking surface (112b; 1112b; 2112b; 3112b; 4122b).

2. In paragraph 1, The above first contact portion (112; 1112; 2112; 3112; 4122) is It includes a recessed surface (112a; 1112a; 2112a; 3112a; 4122a) extending from the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) and spaced apart from the first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) toward the inside of the first slide core (11), The above second contact portion (122; 1122; 2122; 3122; 4112) is A mold device including a protruding surface (122a; 1122a; 2122a; 3122a; 4112a) extending from the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) and spaced outwardly from the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c).

3. In paragraph 1 or 2, In the mold opening state of the above mold device, The first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) and the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) are spaced apart from each other, The above protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the above recessed surface (112a; 1112a; 2112a; 3112a; 4122a) are spaced apart from each other, A mold device in which the outer end of the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) overlaps the outer end of the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) in the first direction.

4. In any one of paragraphs 1 to 3, A mold device in which the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) and the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) overlap each other at least partially in the first direction.

5. In any one of paragraphs 1 to 4, In the closed state of the above mold device, The first sealing surface (112c; 1112c; 2112c; 3112c; 4122c) and the second sealing surface (122c; 1122c; 2122c; 3122c; 4112c) are in contact with each other, A mold device in which the protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the recessed surface (112a; 1112a; 2112a; 3112a; 4122a) are in contact with each other.

6. In any one of paragraphs 1 to 5, The above protruding surface (122a; 1122a; 2122a; 3122a; 4112a) and the above recessed surface (112a; 1112a; 2112a; 3112a; 4122a) are a mold device that is parallel to each other.

7. In any one of paragraphs 1 to 6, A mold device in which, when the second slide core (12) moves along the second direction, the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) presses the first locking surface (112b; 1112b; 2112b; 3112b; 4122b) toward the first direction.

8. In any one of paragraphs 1 to 7, A mold device in which the second locking surface (122b; 1122b; 2122b; 3122b; 4112b) extends in a third direction opposite to the first direction as it goes in the second direction.

9. In clauses 1 to 8, A mold device further comprising an elastic member (119) that presses the first slide core (11) in a third direction opposite to the first direction.

10. In any one of paragraphs 1 to 9, The above-mentioned recessed surface (112a; 1112a; 2112a; 3112a; 4122a) forms a first outer edge (112e; 1112e; 2112e; 3112e; 4122e) of the first contact portion (112; 1112; 2112; 3112; 4122), A mold device in which the above protruding surface (122a; 1122a; 2122a; 3122a; 4112a) forms a second outer edge (122e; 1122e; 2122e; 3122e; 4112e) of the second contact portion (122; 1122; 2122; 3122; 4112).

11. In any one of paragraphs 1 to 10, A mold device in which the width of the first sealing surface (112c) extending from the first inner edge (112d) to the first locking surface (112b) is smaller than the width of the recessed surface (112a) extending from the first locking surface (112b) to the first outer edge (112e).

12. In any one of paragraphs 1 to 11, A mold device in which the width of the second sealing surface (122c) extending from the second inner edge (122d) to the second locking surface (122b) is smaller than the width of the protruding surface (122a) extending from the second locking surface (122b) to the second outer edge (122e).

13. In any one of paragraphs 1 to 12, A mold device in which the first direction and the second direction intersect at an obtuse angle.

14. In any one of paragraphs 1 to 13, A first mold plate (30) including a first cavity portion (31), and having a first slide core (11) and a second slide core (12) slidably arranged around the first cavity portion (31); A second mold plate (20) including a second cavity portion (21) configured to face the first cavity portion (31) and define the cavity (C) between the first cavity portion (31); and A mold device further comprising a locking block (40) that is movably coupled to the second mold plate (20) in a third direction orthogonal to the first and second directions and configured to move the second slide core (12) in the second direction.

15. In any one of paragraphs 1 to 14, The above locking block (40) is: A head (45) coupled to the second mold plate (20) and having a spiral screw (451) formed thereon extending along the third direction; and A mold device including a body (42) extending from the head (45) toward the second slide core (12) and having a circular cross section.

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