JP2019048385A - Die for insert molding - Google Patents

Abstract

To provide a die for insert molding, that is capable of suppressing shape deformation and appearance change of an insert molded part in insert molding.SOLUTION: There is provided a pressing insert 101 including an elastic member, and the elastic member presses a portion of an insert part 20 when closing a die 40 and comprises a pressing face 101a having substantially the same shape and the same size as those of the portion of the insert part 20. There is provided a die 40 for insert molding in which pressing force of the pressing face 101a is dispersed almost all over a curved surface part 21, and is evenly applied to almost all over the curved surface part 21.SELECTED DRAWING: Figure 2C

Description

  The present invention relates to a mold for insert molding.

  Generally, in insert molding using Liquid Injection Molding (hereinafter referred to as LIM), the insert part is placed in an open mold and then the mold is closed. Then, in the mold, for example, a resin (hereinafter, referred to as a molded part resin), which is a material for molding the molded part, is supplied to the peripheral part of the insert part in a molten state by heat. The molded portion resin is thermosetting, and when the molded portion resin is cured by heating from the mold, the molded portion is molded. Simultaneously with this molding, the molding is integrated into the insert part to form an insert molded part.

  For example, between the time the mold is closed for the supply of molding part resin and the mold is opened for taking out the insert molded part, the mold for insert molding is the position of the insert part to be placed in the mold It is necessary to hold the insert part in order to stabilize the

  Therefore, for example, in the molding die apparatus disclosed in Patent Document 1, the insert component is held by a holding pin having an urging force.

JP 9-109188 A

  In the molding die apparatus disclosed in Patent Document 1, when the flat portion of the rod-shaped pressing pin presses the curved surface portion of the insert part, the pressing force is applied to only a part of the curved surface portion, in other words, local in the curved surface portion Power is applied. Therefore, in the molding process, the shape of the insert part is deformed, and the appearance of the insert part is changed. Such deformation in shape and change in appearance lead to deterioration in the quality of insert-formed parts including insert parts, and are judged as defectives, and therefore are required to be suppressed.

  The present invention has been made in view of these circumstances, and it is an object of the present invention to provide a mold for insert molding which can suppress the deformation of the shape of the insert molded part and the change of the appearance in the insert molding.

  In order to achieve the above object, one aspect of the mold for insert molding of the present invention is characterized in that the heat-softenable insert part is placed inside the mold and the gold placed around the insert part A mold for insert molding, wherein the insert component and the resin are integrally formed by supplying a resin to the insert component from a cavity of the mold included in a mold inclusion portion, and the metal A presser insert including a resilient member having a pressing surface having substantially the same shape and substantially the same size as the portion of the insert part when the mold is closed.

  The present invention can provide a mold for insert molding which can suppress the deformation of the shape of the insert molded part and the change of the appearance in the insert molding.

FIG. 1A is a perspective view of an insert molded part according to an embodiment of the present invention. FIG. 1B is a perspective view of the insert molded part shown in FIG. 1A as viewed from the opening side. FIG. 2A is a perspective view of a mold for insert molding according to an embodiment of the present invention to form the insert molded part shown in FIG. 1A. FIG. 2B is a longitudinal cross-sectional perspective view of the mold shown in FIG. 2A in the opened state. FIG. 2C is a side view of the mold shown in FIG. FIG. 2D is a view in which the mold shown in FIG. 2C is closed. FIG. 2E is an enlarged view of the periphery of the insert part shown in FIG. 2D. FIG. 2F is an enlarged view of the periphery of the convex portion of the insert part shown in FIG. 2E. FIG. 3A is a perspective view of a pressing insert. FIG. 3B is a perspective view of the insert part and a presser insert facing the insert part when the mold is opened. FIG. 3C is a perspective view of the insert part when the mold is closed and a pressing insert for pressing the insert part. FIG. 4A is a perspective view showing a first modified example of a pressing insert. FIG. 4B is an enlarged view of a convex portion of the presser insert shown in FIG. 4A. FIG. 5A is a perspective view showing a second modified example of the pressing insert. FIG. 5B is an enlarged view of a convex portion of the pressing insert shown in FIG. 5A. FIG. 6 is a perspective view showing a third modification of the pressing insert. FIG. 7 is a perspective view showing a fourth modification of the pressing insert.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, in some drawings, illustration of a part of member is abbreviate | omitted for clarification of illustration.

  The insert molded part 10 of the present embodiment as shown in FIGS. 1A and 1B is used, for example, as an exterior part of the operation part of the endoscope although not shown.

  The insert molded part 10 has an insert part 20 molded by a not-shown mold and a frame-shaped molded part 30 integrally molded with the insert part 20 by a mold 40 for insert molding (see FIG. 2A). That is, the insert molded part 10 is formed by integrating the insert part 20 and the molding portion 30.

  The insert part 20 is a part having heat softening property. The insert component 20 is formed, for example, as a cup-shaped housing having a bottom surface at one end.

  The bottom surface which is a part of the insert part 20 has a curved surface 21. For example, the curved surface portion 21 is disposed over the entire bottom surface which is a part of the curved surface portion 21. The curved surface portion 21 protrudes in the direction opposite to the opening 23 of the insert part 20 in the direction of the axis C of the insert part 20. The axis C of the insert part 20 has a center of gravity on a plane perpendicular to the opening and closing direction of the mold 40 described later. The outer peripheral surface of the curved surface portion 21 is a portion exposed to the outside and exposed to the eye, for example, when the insert molded part 10 is mounted on a member (not shown) as a single part, Act as

  As shown in FIG. 1A, FIG. 1B and FIG. 2F, the insert part 20 has the annular convex part 25 arrange | positioned over the perimeter of the outer peripheral side 25a of the insert part 20. As shown in FIG. The protrusions 25 are disposed around the edge of the insert part 20. For example, the protrusion 25 may be integral with or separate from the outer peripheral side surface 25 a of the insert part 20.

  The formed portion 30 is a frame-shaped component disposed around the outer periphery of the edge of the opening 23. The molding portion 30 is disposed on the convex portion 25.

  The material of the insert part 20 is, for example, a resin having heat softening properties. Such a resin has, for example, modified polyphenylene oxide (hereinafter referred to as PPO). For convenience of explanation, a resin for molding the insert part 20 is referred to as an insert part resin.

  The material of the molding unit 30 is, for example, a resin such as a high temperature resin such as super engineering plastic or a thermosetting silicone resin, and has high fluidity. For convenience of description, a resin for molding the molding portion 30 is referred to as a molding portion resin.

  Next, a mold 40 for insert molding for insert molding (forming) the insert molded part 10 will be described.

  First, the insert part 20 is molded by a mold not shown. The molded insert part 20 is a part that has already been completed, and is in a state of satisfying the desired quality. Next, as shown in FIGS. 2B and 2C, the insert part 20 is placed inside the open mold 40. In particular, as shown in FIGS. 2B and 2C, the insert part 20 is arranged and held in the movable mold 50 of the mold 40 which is open relative to the fixed mold 80 of the mold 40. At this time, the curved surface portion 21 faces the fixed mold 80 and is disposed on the side where the fixed mold 80 is closed. Therefore, the curved surface portion 21 protrudes from the movable mold 50 toward the fixed mold 80. After being held, the stationary mold 80 is closed relative to the movable mold 50 as shown in FIG. 2D. Thereby, the insert part 20 will be arrange | positioned inside the metal mold | die 40. As shown in FIG.

  With the mold 40 closed, the mold 40 supplies the molding resin to the periphery of the insert part 20 by insert molding using Liquid Injection Molding (hereinafter referred to as LIM), and the insert molded part 10 is obtained. Form. Specifically, the insert component 20 is disposed inside the mold 40, and the cavity 91 of the mold 40 is included in the inclusion portion 103 of the mold 40 disposed around the insert component 20. By supplying the molding resin to the portion, the mold 40 integrally forms the insert part 20 and the molding resin with respect to each other to form the insert molding 10.

  As shown in FIG. 2A, FIG. 2B, FIG. 2C and FIG. 2D, the mold 40 has the insert part 20 disposed therein and the movable mold 50 for holding the disposed insert part 20; The stationary mold 80 is disposed opposite to the movable mold 50 and is disposed opposite to the movable mold 50.

  The movable mold 50 is attached to a first platen portion (not shown) of an injection molding machine (not shown), and the fixed mold 80 is attached to a second platen portion (not shown) of the injection molding machine (not shown). The fixed mold 80 is moved in the opening and closing direction by the second platen unit, and this movement closes (closes) or opens (separates) the movable mold 50. That is, the fixed mold 80 is separable from the movable mold 50. The opening and closing direction is shown as the vertical direction in FIGS. 2C and 2D. The axis C direction of the mold 40 is the axis C direction of the fixed mold 80, the axis C direction of the movable mold 50, the opening / closing direction, and the axis C direction of each of the insert part 20, the molding portion 30 and the insert molding part 10. And match. Such an axis C direction indicates a direction passing through the centroid in a plane perpendicular to the opening and closing direction of the mold 40.

  The mold 40 has a guide pin 151 for guiding the opening and closing of the movable mold 50 with respect to the fixed mold 80, and a support pin 153 which is disposed outside the guide pin 151 and supports the opening and closing movement. The guide pin 151 is erected on a movable plate 51 of the movable mold 50 described later, and is inserted into and removed from a hole (not shown) disposed in a fixed plate 87 of the fixed mold 80 described later as it opens and closes. The support pin 153 is disposed inside a runner plate 85 and a fixed plate 87, which will be described later, of the fixed mold 80, extends toward the movable plate 51, and is inserted into the hole 51a disposed in the movable plate 51 in opening and closing. It is done.

  As shown in FIGS. 2B, 2C and 2D, the movable die 50 is disposed on the movable plate 51 facing the fixed plate 87 and the movable plate 51, and the first movable insert 53 on which the insert component 20 is disposed. And a second movable insert 55 disposed in the first movable insert 53.

  The movable plate 51 has a recess 51 c which is a groove in which the first movable insert 53 is disposed. The recess 51 c is recessed in the opening and closing direction.

  The first movable insert 53 has a convex portion 53a disposed at a central portion of the first movable insert 53 and a concave portion 53b disposed around the convex portion 53a. The convex portion 53a protrudes from the movable mold 50 side toward the fixed mold 80 in the opening and closing direction. The upper surface of the convex portion 53a is disposed closer to the stationary mold 80 than the PL, and is a flat surface. The recess 53 b is disposed around the protrusion 53 a around the protrusion 53 a. The recess 53 b is recessed in the opening and closing direction. The bottom surface of the recess 53 b is disposed closer to the movable plate 51 than the PL, and is a flat surface. The upper surface of the first movable insert 53 excluding the convex portion 53a and the concave portion 53b is disposed on PL and is a flat surface.

  The second movable insert 55 is fitted into the recess 53b. The upper surface of the second movable insert 55 is disposed on PL and is a plane. As shown in FIG. 2F, the second movable insert 55 has a cavity 55a to which the molding portion resin is supplied in order to mold the molding portion 30.

  The convex portion 53 a holds the insert component 20 in a state where the second movable insert 55 is disposed in the concave portion 53 b. Specifically, the convex portion 53a is inserted into the insert part 20, the inner peripheral surface of the insert part 20 abuts on the outer peripheral surface of the convex part 53a, and the convex portion 25 is disposed around the cavity 55a. The convex portion 53 a holds the insert component 20. At this time, the upper surface of the convex portion 53a is separated from the inner peripheral surface of the curved surface portion 21, the hollow portion is disposed between the upper surface and the inner peripheral surface, and the outer peripheral surface of the curved surface portion 21 is exposed. In addition, because of the convex portion 25, the cavity 55a is disposed around the convex portion 53a. The movable mold 50 may hold a portion other than the curved surface portion 21 which is pressed by a pressing insert 101 described later of the fixed mold 80.

  As shown in FIG. 2B, FIG. 2C and FIG. 2D, the movable die 50 has a heat insulating plate 57 in which the movable plate 51 is disposed, a core support plate 59 in which the heat insulating plate 57 is disposed, and a first platen portion not shown. And a core mounting plate 61 supported by the The movable mold 50 is inserted from the movable mold 50 by moving toward the fixed mold 80 by moving the spacer plate 63 interposed between the core receiving plate 59 and the core mounting plate 61 in the direction of the axis C of the movable mold 50. And an ejection mechanism 65 for ejecting the molded part 10.

  The heat insulating plate 57 is fixed to the movable plate 51 and the core support plate 59 by, for example, a bolt (not shown). The heat insulating plate 57 suppresses, for example, the transfer of heat generated from the heating mechanism 201 described later from the movable plate 51 to the core receiving plate 59 side.

  The core receiving plate 59 is fixed to the spacer plate 63 by, for example, a bolt (not shown).

  The spacer plate 63 defines the protrusion amount of the protrusion mechanism 65 by the thickness of the spacer plate 63. The spacer plate 63 is fixed to the core mounting plate 61 by, for example, a bolt (not shown). As shown to FIG. 2A, spacer board 63 comrades are mutually arrange | positioned in parallel.

  The ejection mechanism 65 is disposed in the space between the two spacer plates 63 and between the core receiving plate 59 and the core mounting plate 61. The ejection mechanism 65 includes an ejection unit (not shown), a plate unit 67 for projecting the ejection unit toward the insert part 20, and a biasing member 69 for urging the plate unit 67 toward the core mounting plate 61.

  The plate unit 67 has a first plate portion 67a mountable on the core mounting plate 61, and a second plate portion 67b mounted on the surface of the first plate portion 67a. The second plate portion 67 b is fixed to the first plate portion 67 a by a bolt or the like (not shown).

  The biasing member 69 is disposed between the core receiving plate 59 and the second plate portion 67 b and biases the second plate portion 67 b toward the core mounting plate 61. The biasing member 69 is, for example, a spring.

  The first plate portion 67 a has an ejector rod 67 c mounted on the back surface of the first plate portion 67 a and inserted into the through hole 61 a of the core attachment plate 61. The ejector rod 67c may be integral with or separate from the first plate portion 67a. The ejector rod 67c is in contact with an ejector (not shown) of the injection molding machine. When the ejector member moves from the movable die 50 toward the stationary die 80 along the axis C of the movable die 50, the ejector member contacts the ejector rod 67c. When the ejector member presses the ejector rod 67c toward the stationary die 80 by the force more than the biasing force of the biasing member 69, the ejector rod 67c presses the movable die 50 from the movable die 50 along the axis C direction of the movable die 50. Are pushed towards. That is, the ejector rod 67c receives the protrusion of the protrusion member. Thereby, the first plate portion 67 a and the second plate portion 67 b move from the movable mold 50 toward the fixed mold 80 along the axis C direction of the movable mold 50. By this movement, the protrusion unit (not shown) attached to the second plate portion 67b contacts the inner peripheral surface of the curved surface portion 21 through the opening 23 of the insert part 20, and the insert molding part 10 is fixed from the movable mold 50 Stick out towards 80. When opening from the movable mold 50 to the fixed mold 80, a movement (expulsion) is carried out, for example, for removal of the insert molding part 10. When the projecting member returns to the original position, the second plate portion 67b is biased by the biasing member 69, and the first plate portion 67a and the second plate portion 67b are fixed along the direction of the axis C of the movable die 50. Move from 80 to the movable mold 50. Then, the first plate portion 67 a is placed again on the core attachment plate 61.

  As shown in FIGS. 2B, 2C and 2D, the fixed mold 80 includes a mold mounting plate 81, a heat insulating plate 83 on which the mold mounting plate 81 is disposed, and a runner plate 85 on which the heat insulating plate 83 is disposed. Have. The stationary mold 80 is disposed on the runner plate 85, and is disposed on the stationary plate 87 facing the movable plate 51 and the recess 87a of the stationary plate 87. The upper surface of the first movable insert 53 and the upper surface of the second movable insert 55 And a cavity 91 which is a flow passage portion through which the molding resin flows.

  The mold attachment plate 81 is supported by a second platen unit (not shown).

  The heat insulating plate 83 is fixed to the mold attachment plate 81 by, for example, a bolt (not shown). The heat insulating plate 83 suppresses, for example, the heat generated from the heating mechanism 201 from being transmitted from the runner plate 85 to the mold attachment plate 81.

  The runner plate 85 is fixed to the heat insulating plate 83 by, for example, a bolt (not shown). The runner plate 85 has a hole 85a and a sprue bush 85b fitted in the hole 85a.

  The fixing plate 87 is fixed to the runner plate 85 by, for example, a bolt (not shown). The fixed plate 87 is opposed to the upper surface of the movable plate 51, and has an end surface which is a flat surface which abuts on the upper surface which is a flat surface of the movable plate 51 when the fixed mold 80 is closed to the movable mold 50. The recess 87 a is recessed toward the mold mounting plate 81 from one end surface in the opening and closing direction. The recess 87a faces the recess 51c in the opening and closing direction, and for example, the diameter of the recess 87a is substantially the same as the diameter of the recess 51c.

  The fixed insert 89 is in contact with the upper surface of the first movable insert 53 and the upper surface of the second movable insert 55 when the fixed mold 80 is closed with respect to the movable mold 50, and has one end surface which is a plane. .

  As shown in FIGS. 2E and 2F, when the stationary mold 80 is closed to the movable mold 50, the cavity 91 communicates with the cavity 55a. The cavity 91 is a path for supplying the molding portion resin to the cavity 55a.

  The cavity 91 is disposed inside the sprue bush 85 b, the fixing plate 87, and the fixing insert 89. Therefore, the runner plate 85 having the sprue bush 85 b and the sprue bush 85 b, the fixing plate 87 and the fixing insert 89 function as the containing portion 103 including the cavity 91. The inclusion portion 103 may include a second movable insert 55 that includes the cavity 55a.

  The heat insulating plate 83 and the containing portion 103 (the runner plate 85, the fixing plate 87, and the fixing insert 89) are cylindrical, and each have hollow portions 95a, 95b, 95c, 95d. The cavity 91 is separate from and not in communication with the hollow portions 95a, 95b, 95c, 95d, and is disposed laterally of the hollow portions 95a, 95b, 95c, 95d. The hollow portions 95a, 95b, 95c, 95d are coaxially arranged with respect to each other in the opening / closing direction, arranged in this order, and in communication with the adjacent hollow portions. For example, the inner diameters of the heat insulating plate 83, the runner plate 85, the fixed plate 87, and the fixed insert 89 may be substantially the same as one another. Thus, in the hollow portions 95a, 95b, 95c, 95d, the respective diameters may be substantially the same as one another. The inner diameter and diameter may be adjusted accordingly. The respective inner diameters and diameters may thus be different from one another.

  The fixed die 80 has a presser insert fixing plate 99 disposed on the die mounting plate 81 and a presser insert 101 disposed on the presser insert fixing plate 99. The pressing insert fixing plate 99 and the pressing insert 101 are, for example, column-shaped members. The pressing insert fixing plate 99 is fixed to the mold mounting plate 81 by, for example, a bolt (not shown). The presser insert 101 is fixed to the presser insert fixing plate 99 by, for example, a bolt (not shown).

  The pressing insert fixing plate 99 and the pressing insert 101 may be disposed apart from the heat insulating plate 83 and the containing portion 103 (the runner plate 85, the fixing plate 87, and the fixing insert 89). For example, the pressing insert fixing plate 99 is disposed in the hollow portions 95a, 95b and 95c which are the inside of the heat insulating plate 83 and the containing portion 103 (the runner plate 85 and the fixing plate 87). It arrange | positions to the hollow part 95d which is an inside of fixed core 89). The presser insert 101 may be at least disposed in the hollow portion 95d, and the arrangement position of the presser insert fixing plate 99 and the press insert 101 with respect to the hollow portions 95a, 95b, 95c, 95d is not particularly limited.

  The outer diameter of the pressing insert fixing plate 99 and the outer diameter of the pressing insert 101 are the heat insulating plate 83 and the containing portion 103 (the runner plate 85, the fixing plate 87 and the fixing insert 89 in the hollow portions 95a, 95b, 95c, 95d). Smaller than the inner diameter of each). Therefore, when the presser insert fixing plate 99 is disposed in the hollow portions 95a, 95b, 95c, the outer peripheral surface of the presser insert fixing plate 99 corresponds to the heat insulating plate 83 and the containing portion 103 (runner plate 85 and fix plate 87). It is arranged away from the inner circumferential surface. Then, gaps 97a, 97b, 97c are disposed between the pressing insert fixing plate 99, the heat insulating plate 83, the runner plate 85, and the fixing plate 87. When the pressing insert 101 is disposed in the hollow portion 95 d, the outer circumferential surface of the pressing insert 101 is disposed away from the inner circumferential surface of the fixed insert 89 which is the inclusion portion 103. Then, a gap 97 d is disposed between the pressing insert 101 and the fixed insert 89.

  The gaps 97a, 97b, 97c, 97d are annular, coaxially disposed in the opening / closing direction, and disposed in this order to communicate with adjacent gaps. When the mold 40 is opened, the gaps 97a, 97b, 97c, 97d communicate with the outside.

  As shown in FIGS. 2D, 2E, and 2F, the inner diameter of the fixed insert 89 is larger than the outer diameter of the insert part 20. Therefore, when the mold 40 is closed, the insert part 20 disposed in the mold 40 is disposed in the hollow portion 95 d which is the inside of the fixed insert 89 serving as the inclusion portion 103. The inner circumferential surface of the fixed insert 89 which is the inclusion portion 103 is disposed apart from the outer circumferential side surface 25 a of the insert part 20. Therefore, a gap 97 d is disposed between the inner peripheral surface of the fixed insert 89 and the outer peripheral side surface 25 a of the insert part 20.

  The outer diameter of the pressing insert fixing plate 99 is substantially the same as the outer diameter of the pressing insert 101. The outer diameter of the pressing insert fixing plate 99 and the outer diameter of the pressing insert 101 are slightly smaller than the outer diameter of the curved surface portion 21, but may be substantially the same as the outer diameter of the curved surface portion 21.

  The pressing insert fixing plate 99 is, for example, metal. The pressing insert fixing plate 99 may be omitted, and the pressing insert 101 may be directly fixed to the mold mounting plate 81.

  The pressing insert 101 has, for example, an elastic member. The elastic member has a hardness lower than that of the insert part 20, for example. Such an elastic member has, for example, a resin material. The resin material preferably includes, for example, PTFE, FEP, PFA, ETFE, ECTFE, PVF, PES and the like. The compression modulus of PTFE is, for example, about 500 Mpa or more. The Rockwell hardness of PTFE is, for example, about 20 on the R scale. The presser insert 101 should have heat resistance and be soft. Further, although a rubber material can also be used as the elastic member, in this case, it is not easy to cut out the pressing surface 101a described later. In the present embodiment, it is preferable to use a resin material rather than a rubber material in this embodiment in consideration of the scraping and the deterioration of the rubber material due to heat.

  As shown in FIG. 2D, when the fixed mold 80 is closed to the movable mold 50, the mold mounting plate 81 pushes the pressing insert 101 toward the movable mold 50 via the pressing insert fixing plate 99. Thereby, the pressing insert 101 presses the curved surface portion 21 of the insert component 20 disposed in the hollow portion 95 d. The pressing direction indicates the closing direction of the fixed mold 80. The presser insert 101 separates from the insert part 20 when the fixed die 80 opens to the movable die 50.

  The pressing insert 101 (elastic member) has a pressing surface 101a. As shown in FIG. 3A, the pressing surface 101a is flat, for example, without irregularities. The pressing surface 101 a is recessed from the movable die 50 toward the fixed die 80 and faces the curved surface portion 21. The pressing surface 101a is formed by cutting the pressing insert 101 (elastic member), for example, and has elasticity.

  As shown in FIG. 2D, FIG. 2E, FIG. 2F, FIG. 3A, FIG. 3B and FIG. 3C, the pressing surface 101a has substantially the same shape and size as the curved surface portion 21 which is a part of the insert part 20. In detail, the pressing surface 101 a has substantially the same shape and approximately the same size as the outer peripheral surface of the curved surface portion 21 of the insert part 20. The pressing surface 101 a is a curved surface, has a curvature substantially the same as the curvature of the curved surface 21, and is arranged along the outer peripheral shape of the curved surface 21 when the curved surface 21 is pressed. The external method of the pressing surface 101 a is slightly smaller than the external method of the curved surface portion 21, but may be substantially the same as the external method of the curved surface portion 21.

  When the fixed mold 80 of the mold 40 is closed to the movable mold 50, the pressing surface 101 a presses the curved surface portion 21 which is a part of the insert part 20. When the pressing surface 101 a presses the curved surface portion 21, the pressing insert 101 contacts the curved surface portion 21 with one surface of the pressing surface 101 a. In detail, the pressing surface 101 a is in surface contact with the curved surface portion 21. The entire pressing surface 101a is opposed to the curved portion 21 with the same curvature as the curvature of the curved portion 21, is in surface contact with the opposing portion which is substantially the entire curved portion 21, and the substantially entire curved portion 21 is uniform. Hold down. That is, the pressing surface 101 a has a pressing force uniformly applied to substantially the entire curved surface 21, and the pressing force of the pressing surface 101 a is dispersed to substantially the entire curved surface 21, and is uniform to substantially the entire curved surface 21. It takes to The pressing surface 101 a presses the component toward the movable mold 50 in the direction in which the fixed mold 80 closes the movable mold 50. When the fixed mold 80 opens from the movable mold 50, the pressing surface 101a is separated from the curved surface portion 21, and the pressing force is eliminated.

  The mold 40 cools the insert part 20 and a heating mechanism 201 such as a heater that heats the molding part resin in order to cure the molten molding part resin supplied from the cavity 91 to the peripheral part of the insert part 20. And a cooling mechanism 203 for cooling the presser insert 101.

  The heating mechanism 201 heats the containing portion 103 including the cavity 91. For example, the heating mechanism 201 directly transfers the heat to the runner plate 85 and the fixing plate 87, indirectly transfers the heat to the sprue bush 85b via the runner plate 85, and fixes the fixing insert 89 via the fixing plate 87. Indirectly transfer heat to The heating mechanism 201 heats the molding portion resin flowing to the cavity 91 via the inclusion portion 103. The heating mechanism 201 may heat the movable plate 51. The heating mechanism 201 may heat the mold 40 except at least the mold attachment plate 81, the pressing insert fixing plate 99, and the pressing insert 101. For example, the temperature of heat is 130 ° C. to 150 ° C. for curing of the molded part resin.

  The cooling mechanism 203 may cool the presser insert 101 so that the temperature of the presser insert 101 becomes lower than the temperature of the containing portion 103. The cooling mechanism 203 may cool the insert component 20 via the pressing insert fixing plate 99 and the pressing insert 101.

  For example, the cooling mechanism 203 has a pipe portion 203a through which a cooling medium such as cooling water flows. For example, the tube portion 203a is disposed on the mold attachment plate 81 to which the pressing insert fixing plate 99 to which the pressing insert 101 is fixed is attached. The pipe portion 203 a through which the cooling water flows cools the pressing insert 101 via the pressing insert fixing plate 99. The tube portion 203a may be a hole or a tube disposed in the hole. The tube portion 203 a is disposed inside the mold attachment plate 81. The temperature of the cooling water is, for example, 20 ° C. The tube portion 203a extends to the outside of the mold 40, and the cooling water is circulated at a maintained temperature.

  Here, molding of the insert molded part 10 will be described.

  The insert part 20 is molded by a mold not shown. The insert part 20 is in the state of satisfying the desired quality.

  As shown in FIGS. 2B and 2C, the insert component 20 is held by the convex portion 53a of the movable mold 50 in a state where the fixed mold 80 is open to the movable mold 50. Thereby, the inner circumferential surface of the insert part 20 abuts on the outer circumferential surface of the convex portion 53a, and the convex portion 25 is disposed around the cavity 55a. At this time, as shown in FIGS. 2B, 2C, and 3B, the pressing surface 101a is disposed apart from the curved surface portion 21.

  Next, as shown in FIGS. 2D, 2E and 2F, the fixed mold 80 is closed relative to the movable mold 50 in order to supply the molding resin to the cavity 55a. As a result, as shown in FIG. 2D, FIG. 2E, FIG. 2F and FIG. 3C, when the fixed plate 87 abuts on the movable die 50, the fixed insert 89 is made into the first movable insert 53 and the second movable insert 55. Abut Furthermore, the cavity 91 communicates with the cavity 55 a, and the pressing surface 101 a abuts on the curved surface portion 21 to press the curved surface portion 21.

  With the fixed mold 80 closed to the movable mold 50, the molten molding resin flows through the cavity 91 and is supplied to the cavity 55a. The heating mechanism 201 heats the sprue bush 85b, the runner plate 85, the fixing plate 87, and the fixing insert 89, and the molding resin is transmitted from the sprue bush 85b, the runner plate 85, the fixing plate 87, and the fixing insert 89. It cures by heat. Thereby, the formed portion 30 is integrated with the insert component 20 at the same time as the formed portion 30 is formed. Then, the insert molded part 10 is formed.

  The fixed mold 80 opens relative to the movable mold 50 and the insert molding part 10 is removed from the mold 40 by the ejection of the ejection mechanism 65.

  Between the fixed mold 80 is closed to the movable mold 50 holding the insert part 20 for the supply of molding part resin, and the fixed mold 80 is opened to the movable mold 50 to remove the insert molded part 10 In order to stabilize the position of the insert part 20 disposed in the mold 40, the mold 40 needs to hold the insert part 20.

  Therefore, in the present embodiment, the pressing surface 101a of the pressing insert 101 presses the curved surface portion 21 of the insert component 20 by surface contact until the fixed mold 80 is closed to the movable mold 50 and then opened. Thereby, the position of the insert part 20 arrange | positioned at the metal mold | die 40 is stabilized.

  The pressing surface 101 a has substantially the same shape and approximately the same size as the outer peripheral surface of the curved surface portion 21 of the insert component 20. Therefore, the pressing surface 101a does not locally press a part of the curved surface portion 21. The entire pressing surface 101a presses substantially the entire curved surface portion 21 with a uniform force, and the pressing force of the pressing surface 101a is substantially the entire curved surface portion 21. Take evenly. Thereby, in the insert molding, the deformation of the shape of the insert part 20 (specifically, the curved surface portion 21) and the change of the appearance due to the pressing are suppressed. The appearance refers to, for example, the roughness of the surface.

  It is assumed that the pressing surface 101a is deformed by the reaction force from the curved surface portion 21 when the pressing is performed. However, when the fixed mold 80 opens relative to the movable mold 50 and the reaction force is eliminated by this opening, the pressing surface 101a can be restored to the original state by the elasticity that is the restoring force of the pressing surface 101a.

  In order to cure the molding resin, the heating mechanism 201 heats the molding resin through the sprue bush 85 b, the runner plate 85, the fixing plate 87, and the fixing insert 89. It is assumed that this heat is transferred from the sprue bush 85b, the runner plate 85, the fixing plate 87 and the fixing insert 89 to the heat-softenable insert part 20. For convenience of explanation, most of the heat transfer here is referred to as the first heat transfer and the second heat transfer. The first heat transfer is, for example, transmission of heat from the runner plate 85, the fixing plate 87, and the fixing insert 89 to the pressing insert fixing plate 99 and the pressing surface 101a of the pressing insert 101, and insertion from the pressing surface 101a. The heat transfer to the curved surface 21 of the component 20 is shown. The second heat transfer indicates the transfer of heat from the stationary insert 89 to the outer peripheral side 25 a of the insert part 20.

  When heat is transferred from the pressing surface 101 a to the curved surface portion 21 having heat softening property, the curved surface portion 21 may be softened by the heat. Then, due to the softening, the shape of the curved surface portion 21 may be deformed and the appearance may be changed. Also, when the heat transmitted from the mold 40 including the pressing surface 101a to the insert part 20 including the curved surface portion 21 softens the insert part 20, the shape of the insert part 20 is deformed by the softening and the appearance is changed. Sometimes.

  In the present embodiment, the pressing insert fixing plate 99 and the pressing insert 101 are disposed apart from the containing portion 103 (the sprue bush 85 b, the runner plate 85, the fixing plate 87 and the fixing insert 89) including the cavity 91. The gaps 97b, 97c, 97d are arranged. Therefore, in the first heat transfer, the heat from the runner plate 85, the fixing plate 87 and the fixing insert 89 to the pressing insert fixing plate 99 and the pressing insert 101 is generated by this arrangement and the gaps 97b, 97c and 97d. Transmission is suppressed. Then, the transfer of heat from the pressing surface 101 a to the curved surface portion 21 of the insert part 20 is suppressed.

  Further, a heat insulating plate 83 is disposed between the sprue bush 85 b and the runner plate 85 and the mold mounting plate 81. Therefore, the transfer of heat from the sprue bush 85b and the runner plate 85 to the curved surface portion 21 of the insert part 20 is suppressed via the mold mounting plate 81, the pressing insert fixing plate 99 and the pressing surface 101a of the pressing insert 101. . Further, it is assumed that heat is transferred to the heat insulating plate 83. In this case, the transfer of heat from the heat insulating plate 83 to the pressing insert fixing plate 99 and the pressing insert 101 is suppressed by the gap 97 a. Then, the transfer of heat from the pressing surface 101 a to the curved surface portion 21 of the insert part 20 is suppressed.

  The outer peripheral side surface 25a of the insert part 20 is disposed apart from the containing portion 103 (fixed insert 89) including the cavity 91, and the gap 97d is disposed. Therefore, in the second heat transfer, the heat transfer from the fixed insert 89 to the outer peripheral side surface 25a of the insert component 20 is suppressed by this arrangement and the gap 97d.

  As described above, in the present embodiment, the temperatures of the pressing insert fixing plate 99, the pressing insert 101, and the insert component 20 are determined by the gaps 97a 97b 97c, and 97d. It becomes lower than the temperature of the runner plate 85, the fixed plate 87 and the fixed insert 89). Then, the softening of the insert component 20 including the curved surface portion 21 due to heat is suppressed, and the deformation of the shape and the change of the appearance of the insert component 20 including the curved surface portion 21 due to the softening are suppressed.

  Further, the presser insert 101 is disposed on the die attachment plate 81 via the presser insert fixing plate 99, and the tube portion 203a through which the cooling water flows is disposed on the die attachment plate 81. Therefore, the pressing insert 101 and the pressing surface 101a are cooled by the cooling water. Further, in the first heat transfer, heat is pressed from the containing portion 103 (the sprue bush 85b, the runner plate 85, the fixing plate 87, and the fixing insert 89) via the gaps 97a, 97b, 97c, 97d. Even if it is transmitted to the insert 101, the pressing insert fixing plate 99, the pressing insert 101 and the pressing surface 101a are cooled by the cooling water. Then, the temperature of each of the pressing insert fixing plate 99, the pressing insert 101 and the pressing surface 101a is the temperature of the containing portion 103 (the sprue bush 85b, the runner plate 85, the fixing plate 87 and the fixed insert 89) by the cooling water. It is lower than. Therefore, the transfer of heat from the pressing surface 101a to the curved surface portion 21 of the insert part 20 is suppressed.

  Then, the softening of the insert component 20 including the curved surface portion 21 due to heat is suppressed, and the deformation of the shape and the change of the appearance of the insert component 20 including the curved surface portion 21 due to the softening are suppressed.

  As described above, in the present embodiment, the curved surface portion 21 which is a portion of the insert part 20 is not capable of locally pressing a portion of the curved surface portion 21. The curved surface portion 21 is pressed by a pressing surface 101 a having substantially the same shape and size as the curved surface portion 21. Thereby, in insert molding, the deformation | transformation of the shape of the insert component 20 and the change of an external appearance by holding | suppressing can be suppressed. In particular, since the pressing force of the pressing surface 101 a is uniformly applied to substantially the entire curved surface portion 21, it is possible to further suppress the deformation of the shape of the insert component 20 and the change of the appearance due to the pressing. Also, from the time when the fixed mold 80 is closed to the movable mold 50 holding the insert part 20 for the supply of molding part resin, and until the fixed mold 80 is opened to the movable mold 50 to take out the insert molded part 10. In the meantime, it is possible to suppress the deformation of the shape of the insert part 20 (specifically, the curved surface portion 21) and the change of the appearance due to the pressing in the insert molding.

  And, even if the insert molded part 10 is molded, the insert part 20 can maintain the desired quality, and the deterioration of the quality of the insert molded part 10 including the insert part 20 can be avoided.

  The curved surface portion 21 is exposed to the outside and functions as an appearance portion when the insert molded part 10 is mounted on a member as one part. In the present embodiment, it is possible to suppress the deformation of the shape of the exposed curved portion 21 and the change of the appearance, and it is possible to avoid the deterioration of the quality of the insert molded part 10 including the insert part 20.

  The pressing surface 101a is flat without unevenness. Therefore, the pressing surface 101 a can stably press the insert component 20 without damaging the curved surface portion 21. And, even if the pressing surface 101 a presses the curved surface portion 21, it is possible to suppress the deformation of the shape of the insert part 20 and the change of the appearance.

  The pressing surface 101 a can apply the pressing force of the pressing surface 101 a uniformly over substantially the entire curved surface portion 21 by surface contact with the curved surface portion 21.

  The pressing surface 101 a presses the component toward the movable mold 50 in the direction in which the fixed mold 80 closes the movable mold 50. Thus, when the fixed mold 80 is closed with respect to the movable mold 50, the pressing force can be transmitted from the pressing surface 101a to the curved surface 21 without waste, and the position of the insert component 20 disposed in the mold 40 can be stabilized.

  The pressing surface 101 a of the elastic member has a hardness lower than the hardness of the insert part 20. Therefore, the pressing surface 101a can be pressed without damaging the curved surface portion 21, and it is possible to suppress the deformation of the shape of the insert part 20 (specifically, the curved surface portion 21) and the change of the appearance due to the pressing.

  The elastic member is preferably, for example, PTFE. Therefore, compared with the elastic member which is rubber | gum, the pressing surface 101a along the shape of the curved surface part 21 can be processed easily. The compressive modulus of PTFE is about 500 Mpa or more. Therefore, the elastic member (presser insert 101) is not easily deformed by the injection pressure.

  For example, it is assumed that the pressing insert 101 disposed in the mold 40, including the pressing surface 101a, has deteriorated over time. The elastic member (presser insert 101) which is PTFE can be easily processed by cutting. Thus, a new elastic member can be cut and this new elastic member can be easily replaced with a degraded elastic member. The pressing surface 101 a is not a separate body from the pressing insert 101, and is not a type to be attached to the pressing insert 101. Therefore, the pressing insert 101 including the pressing surface 101a can be easily replaced.

  The pressing insert 101 including the pressing surface 101a has elasticity. Therefore, the pressing surface 101 a can be deformed along the shape of the curved surface portion 21. The pressing surface 101 a can press the insert component 20 through the curved surface portion 21 along the shape of the curved surface portion 21. In addition, when the pressing surface 101 a presses the curved surface portion 21, it is assumed that the pressing surface 101 a is deformed by the reaction force from the curved surface portion 21. However, when the fixed mold 80 opens with respect to the movable mold 50 and the reaction force is eliminated, the pressing surface 101a can be restored to the original state by the elasticity that is the restoring force of the pressing surface 101a.

  The pressing insert fixing plate 99 and the pressing insert 101 are disposed apart from the heat insulating plate 83 and the containing portion 103 (the sprue bush 85 b, the runner plate 85, the fixing plate 87, and the fixing insert 89). Specifically, the outer peripheral surfaces of the presser insert fixing plate 99 and the presser insert 101 are disposed apart from the inner peripheral surface of the cylindrical heat insulating plate 83 and the inner peripheral surface of the cylindrical containing portion 103. , 97a, 97b, 97c, 97d are arranged. Therefore, the transfer of heat from the heat insulating plate 83 and the containing portion 103 to the pressing insert 101 is suppressed, and the pressing of the curved surface portion 21 in the state where the pressing insert 101 has heat is suppressed. Then, the softening of the insert component 20 including the curved surface portion 21 due to heat can be suppressed, and the deformation of the shape and the change of the appearance of the insert component 20 including the curved surface portion 21 due to the softening can be suppressed.

  When the mold 40 is closed, the insert part 20 disposed in the mold 40 is disposed inside the containing portion 103 (fixed insert 89), and the inner circumferential surface of the containing portion 103 (fixed insert 89) is A gap 97d is disposed apart from the outer peripheral side surface 25a of the insert part 20. Therefore, the transfer of heat from the stationary insert 89 to the outer peripheral side 25 a of the insert part 20 is suppressed. Then, the softening of the insert component 20 including the outer peripheral side surface 25a due to heat can be suppressed, and the deformation of the shape of the insert component 20 and the change of the appearance due to the softening can be suppressed.

  The tube portion 203a of the cooling mechanism 203 is disposed on the die attachment plate 81, and the cooling water flowing through the tube portion 203a cools the pressing pliers 101 fixed to the pressing pliers fixing plate 99 disposed on the die attachment plate 81. Do. Therefore, the temperature of each of the pressing insert fixing plate 99, the pressing insert 101 and the pressing face 101a is determined by the cooling water by the inclusion portion 103 (the sprue bush 85b, the runner plate 85, the fixing plate 87 and the fixing insert 89). It can be lower than the temperature. Then, the transfer of heat from the pressing surface 101 a to the curved surface portion 21 of the insert part 20 can be suppressed. Then, the softening of the insert part 20 including the curved surface portion 21 due to heat can be suppressed, and the deformation of the shape of the insert part 20 and the change of the appearance due to the softening can be suppressed.

  The cooling mechanism 203 cools the presser insert 101 so that the deformation of the shape and the change of the appearance of the insert component 20 including the curved surface portion 21 due to softening can be suppressed and the insert component 20 can be maintained in a hardened state. The core 101 may be kept at a low temperature. Therefore, for example, the cooling mechanism 203 may be directly disposed on the pressing insert 101 or the pressing insert fixing plate 99.

  In the present embodiment, the curved surface portion 21 is disposed, and the pressing surface 101 a has substantially the same shape and approximately the same size as the outer circumferential surface of the curved surface portion 21 of the insert part 20. However, it is not necessary to limit to this. When the pressing surface 101a presses the flat surface of the insert part 20, the pressing surface 101a may have a substantially same shape and a substantially same size as this flat surface which is a part of the insert component 20, and in this case, becomes a flat surface. Therefore, the pressing surface 101a may have the same shape and size as the pressing target portion of the insert part 20.

[Modification]
Below, the modification of the presser insert 101 is demonstrated. In this modification, only differences from the embodiment are described.

  In each modification, the pressing insert 101 (elastic member) has one or more convex parts 101 b disposed on the surface bottom part 101 d of the pressing insert 101. For example, the plurality of convex portions 101 b are distributed in the surface bottom portion 101 d. The envelope surface of the plurality of convex portions 101 b contacts the curved surface portion 21 and presses the curved surface portion 21. The envelope surface is a facing portion of the convex portion 101 b facing the curved surface portion 21 and functions as a pressing surface 101 a. Therefore, in the present modification, the pressing surface 101a is formed by enveloping a plurality of convex portions 101b, and the pressing insert 101 (elastic member) contacts the curved surface portion 21 at the pressing surface 101a of the convex portion 101b. In the first and second modifications, when the presser insert 101 presses the curved surface portion 21, the presser insert 101 contacts the curved surface portion 21 at multiple points such as a plurality of convex portions 101b having the press surface 101a.

  In the first modification, as shown in FIG. 4A and FIG. 4B, the convex portion 101b has a columnar shape, for example, a cylindrical shape. For example, the convex portions 101 b are arranged at equal intervals from one another, and have the same height. The convex portion 101 b has an envelope surface facing the curved surface portion 21 and a pressing surface 101 a which is an end surface.

  When the pressing surface 101a which is an envelope surface and an end surface presses the curved surface portion 21, the pressing surface 101a can contact the curved surface portion 21 and, more specifically, can surface contact the curved surface portion 21. The term "surface contact" as used herein means, for example, that the entire facing portion of the pressing surface 101a facing the curved surface portion 21 contacts the curved surface portion 21.

  For example, the convex portion 101 b is integral with the pressing insert 101 which is an elastic member. Therefore, when the pressing surface 101 a contacts the curved surface portion 21, the pressing surface 101 a can be deformed along the shape of the curved surface portion 21. Then, the pressing insert 101 can make surface contact with the curved surface portion 21 with the plurality of pressing surfaces 101a, and can adjust the contact area by the deformation of the convex portion 101b at the time of contact.

  When the pressing surface 101a which is an envelope surface presses the curved surface portion 21, the convex portion 101b is crushed and makes surface contact with the curved surface portion 21, and the surface bottom portion 101d excluding the convex portion 101b also makes surface contact with the curved surface portion 21 as a pressing surface. It is also good.

  In the second modification, as shown in FIGS. 5A and 5B, the convex portion 101b may have a spherical shape, for example, a hemispherical shape.

  When the pressing surface 101a which is an envelope surface presses the curved surface portion 21, the hemispherical pressing surface 101a can be in contact with the curved surface portion 21. In detail, the curved surface portion 21 can be in point contact. Point contact here indicates contact in a narrower range than surface contact.

  In the third modification, as shown in FIG. 6, the plurality of convex portions 101 b may be arranged in a band shape. The plurality of convex portions 101 b may be arranged in parallel to one another. In the third modification, as in the first modification, the pressing surface 101 a can contact the curved surface 21, and more specifically can contact the curved surface 21.

  In the fourth modification, as shown in FIG. 7, the convex portions 101 b may be arranged in a lattice. In the fourth modification, as in the first modification, the pressing surface 101 a can contact the curved surface 21, and more specifically can contact the curved surface 21.

  The present invention is not limited to the above embodiment, and can be variously modified in the implementation stage without departing from the scope of the invention. In addition, the embodiments may be implemented in combination as appropriate, in which case the combined effect is obtained. Furthermore, various inventions are included in the above-described embodiment, and various inventions can be extracted by a combination selected from a plurality of disclosed configuration requirements. For example, even if some configuration requirements are deleted from all the configuration requirements shown in the embodiment, the problem can be solved, and if an effect is obtained, a configuration from which this configuration requirement is removed can be extracted as the invention.

DESCRIPTION OF SYMBOLS 10 ... Insert molded part, 20 ... Insert part, 21 ... Curved surface part, 25a ... Outer peripheral side, 30 ... Molding part, 40 ... Mold, 50 ... Movable type, 51 ... Movable plate, 53 ... 1st movable insert, 55 ... 2nd movable insert, 55a ... cavity, 57 ... heat insulating plate, 59 ... core support plate, 61 ... core mounting plate, 63 ... spacer plate, 65 ... ejection mechanism, 80 ... fixed type, 81 ... type mounting plate, 83 Insulating plate 85 runner plate 85b sprue bush 87 fixing plate 89 fixing insert 89 cavity 95a 95b 95c 95d hollow portion 97a 97b 97c 97d gap 99 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · •
103 ... inclusion part, 201 ... heating mechanism, 203 ... cooling mechanism.

Claims (20)

A heat-softenable insert part is disposed inside the mold, and resin is supplied to the insert part from a cavity of the mold included in an inclusion of the mold disposed around the insert part. A mold for insert molding, which integrally forms the insert part and the resin,
A mold comprising a presser insert including an elastic member which presses a part of the insert part when the mold is closed and which has a press surface having substantially the same shape and size as the part of the insert part.   The mold according to claim 1, wherein when the pressing surface presses the portion, the pressing surface has a pressing force uniformly applied to the portion. The portion of the insert part has a curved surface,
The mold according to claim 1, wherein the pressing surface has substantially the same shape and the same size as the curved surface portion.   The mold according to claim 3, wherein the pressing surface is in surface contact with the curved surface portion.   The mold according to claim 3, wherein the elastic member has the pressing surface formed by enveloping a plurality of protrusions, and contacts the curved surface portion at the pressing surface of the protrusion.   The mold according to claim 5, wherein the convex portion has a columnar shape, and the pressing surface is in surface contact with the curved surface portion.   The mold according to claim 5, wherein the convex portion has a hemispherical shape, and the pressing surface is in point contact with the curved surface portion.   The mold according to claim 5, wherein the convex portions are arranged in a band shape.   The mold according to claim 5, wherein the convex portions are arranged in a lattice shape. The mold is
A movable type for holding the insert part;
A fixed type which has the pressing insert and which opens and closes with respect to the movable type;
Have
The mold according to claim 1, wherein the pressing surface presses the insert component toward the movable mold in a direction in which the fixed mold closes with respect to the movable mold.   2. The part according to claim 1, wherein the part of the insert part is exposed to the outside when an insert-molded part formed integrally with the insert part and the resin is mounted on a member as one part. Mold.   The mold according to claim 1, wherein the elastic member has a hardness lower than that of the insert part.   The mold according to claim 12, wherein the elastic member comprises a resin material.   The mold according to claim 13, wherein the resin material comprises PTFE.   The mold according to claim 1, wherein the pressing insert is disposed apart from the containing portion. The inclusion portion is cylindrical,
The pressing insert is disposed inside the inclusion portion,
The mold according to claim 15, wherein an outer peripheral surface of the pressing insert is disposed apart from an inner peripheral surface of the inclusion portion.   When the mold is closed, the insert component disposed in the mold is disposed inside the inclusion portion, and the inner circumferential surface of the inclusion portion is disposed away from the outer circumferential side surface of the insert component The mold according to claim 1.   The mold according to claim 1, further comprising a cooling mechanism that cools the presser insert so that the temperature of the presser insert becomes lower than the temperature of the inclusion portion.   The mold according to claim 18, wherein the cooling mechanism has a pipe portion through which a cooling medium flows.   20. The mold according to claim 19, wherein the tube portion is disposed on a mold attachment plate to which a pressing insert fixing plate to which the pressing insert is fixed is attached.