JP2006321061A - Manufacturing method of insert molded product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a molding method of an insert molded product capable of efficiently manufacturing the insert molded product wherein a hole is not formed to the molding resin part in the end part on the closing side of an insert element. <P>SOLUTION: In the manufacturing method of the insert molded product constituted so as to injection-mold a bag-shaped element 30 with a bottomed hole closed at its one end 31 but closed at its other end 31, a pair of horizontally opening type molds 10 and 20 are prepared. A support means for utilizing the insert element 30, which supports the bottomed hole 33 of the insert element 30 to support the insert element 30, is preliminarily provided to the molding surface 11 of one mold 10. The insert molded product 5, wherein the hole is not formed to the molding resin part in the end part 32 on the closing side of the insert element 30, is obtained by closing a pair of the molds 10 and 20 in a state that the insert element 30 is supported by the support means and injecting a molding material R in a cavity 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing an insert-molded product in which a bag-like member with a bottomed hole is injection-molded as an insert part.

  An insert molding method is known in which an insert part made of a metal part is placed in a mold and injection molded to obtain a resin molded product in which the insert part is embedded integrally. In such an insert molding method, when forming a cap nut with a bottomed screw hole with one end open and the other end closed as an insert part, a pair of vertically-opening type gold that is normally opened and closed in the vertical direction A mold is used. That is, among the pair of upper and lower molds, a cap nut is placed upward on a nut supporting convex portion provided on the lower mold, and in this state, the mold is closed and a molding material is injected into the cavity.

  In the resin molded product thus molded, useless holes are formed in the molded resin portion at the closed side end opposite to the open end of the cap nut, corresponding to the nut supporting convex portion. .

  Therefore, conventionally, there has been proposed a technique for obtaining an insert-molded product in which no hole is formed in the molded resin portion at the closed end portion of the cap nut.

For example, as shown in Patent Document 1 below, a bolt shaft for supporting a cap nut is protruded downward from the upper mold, and the cap nut is screwed onto the bolt shaft to suspend the cap nut. In this state, the mold is closed and injection-molded to obtain an injection-molded product having no holes in the molded resin portion at the closed end of the cap nut.
JP 2000-200455 A

  However, in the method of manufacturing an insert-molded product shown in Patent Document 1, since a pair of vertically open molds are used, when a mold is opened and a molded product is taken out, for example, a part such as a robot is taken out. It is necessary to lift the molded product from the lower mold by the equipment and move it to a predetermined collection place (product receiving box, etc.). This movement takes time, and the cycle time for manufacturing becomes longer, resulting in production. The problem of reducing efficiency occurs.

  Furthermore, in the manufacturing method of the insert molded product shown in Patent Document 1, since the cap nut as an insert part is screwed to and supported by the bolt shaft of the upper mold, when removing the molded product after opening the mold, It becomes difficult to remove the cap nut of the molded product from the bolt shaft of the upper mold, and the molded product cannot be removed smoothly from the mold, resulting in a decrease in production efficiency as above. .

  The present invention provides a method for manufacturing an insert-molded product that solves the above-described problems of the prior art and can efficiently manufacture an insert-molded product in which no hole is formed in the molded resin portion at the closed end of the insert component. With the goal.

  In order to achieve the above object, the present invention is summarized as follows.

[1] A method of manufacturing an insert-molded product in which a bag-like member with a bottomed hole having one end opened and the other end closed is injection-molded as an insert part,
While preparing a pair of side-opening molds that open and close horizontally,
A support means for supporting the insert part using the bottomed hole is provided on the molding surface of one of the pair of molds,
With the insert part supported by the support means, the pair of molds are closed, and a molding material is injected into the cavity to form a hole, thereby forming a hole in the molded resin portion at the closed end of the insert part. A method for producing an insert-molded product, characterized in that an insert-molded product not obtained is obtained.

[2] A method of manufacturing an insert-molded product in which a bag-like member with a bottomed hole having one end opened and the other end closed is injection-molded as an insert part,
While preparing a pair of molds to open and close,
A suction support means for sucking and supporting the insert part in the bottomed hole is provided on the molding surface of the mold on one side of the pair of molds,
With the insert support supported by the suction support means, the pair of molds are closed, and a molding material is injected into the cavity to form a hole, so that a hole is formed in the molded resin portion at the closed end of the insert component. An insert molded product manufacturing method characterized in that an insert molded product that is not formed is obtained.

  [3] The suction support means has a protruding pipe portion that is inserted into and engaged with a bottomed hole of an insert part, and sucks from a pipe hole at a tip of the protruding pipe portion. Manufacturing method of insert molded product.

  [4] The method for manufacturing an insert-molded product according to item 2 or 3, wherein the molding material is filled first from the closed side end of the insert-molded product in the periphery of the insert part in the cavity.

  [5] The method for manufacturing an insert-molded product according to any one of the above items 2 to 4, wherein the insert part is constituted by a cap nut in which a thread groove is formed on the inner peripheral surface of the bottomed hole.

  According to the method for manufacturing an insert molded product of the invention [1], since the insert component is supported in the mold using the bottomed hole, the hole is formed in the molded resin portion at the closed end portion of the insert component. An insert molded product that is not formed can be reliably formed.

  Furthermore, since a side-opening mold is used, the molded product can be dropped and automatically recovered by simply kicking out the molded product with a kick pin or the like after the mold is opened. For this reason, it is not necessary to provide a product take-out device such as a robot, and the cost can be reduced correspondingly, and there is no need to take the product from the mold and move it to the product box with the product take-out device etc. Time can be shortened and production efficiency can be further improved.

  In addition, since it uses a horizontally-opening mold, it can be molded using a general-purpose horizontal injection molding machine, and costs are lower than when using dedicated equipment such as a vertical injection molding machine. One step can be reduced.

  According to the method for manufacturing an insert-molded product of the invention [2], since the insert component is supported by the mold by sucking and sucking the bottomed hole, a hole is formed in the molded resin portion at the closed end portion of the insert component. It is possible to reliably form an insert molded product in which no is formed.

  Furthermore, since the insert part can be supported and released from the mold easily by suction and its release operation, for example, the installation operation of the insert part to the mold and the removal operation from the mold are easy. In addition, it is possible to carry out the process accurately, and it is possible to further improve the work efficiency and hence the production efficiency.

  According to the manufacturing method of the insert molded product of the invention [3], the suction support means is constituted by the protruding pipe portion, and the protruding pipe portion is engaged with the bottomed hole of the insert part. In addition, the insert part can be supported by the mold, and the insert part can be more reliably supported. In addition, the insert part can be positioned simply by engaging the protruding pipe portion into the bottomed hole of the insert part.

  Furthermore, the tip of the protruding pipe part can be disposed in the back of the bottomed hole of the insert part, and the insert part can be more securely sucked and fixed by suction from the pipe hole at the tip of the protruding pipe part.

  According to the method of manufacturing an insert molded product of the invention [4], the insert part is pressed against the insert part installation portion by the pressure at the time of resin injection, so that the position of the insert part can be reliably fixed at the time of resin injection. . For this reason, it is possible to effectively prevent a problem that the insert component is displaced at the time of resin injection.

  According to the insert molded product manufacturing method of the invention [5], an insert molded product in which a cap nut is inserted can be obtained with certainty.

<First Embodiment>
Hereinafter, the manufacturing method of the insert molded product which is 1st Embodiment of this invention is demonstrated in detail based on drawing. That is, in this manufacturing method, as shown in FIG. 1 and FIG. 2, a pair of laterally open (horizontal) molds (10) and (20) that open and close in the horizontal direction is used.

  Among the pair of molds, one side is configured as a fixed side mold (10), and the other side is configured as a movable side mold (20). The movable die (20) is moved forward and backward with respect to the fixed die (10) along the horizontal direction by a driving means (not shown), and by the movement, the die (10) (20 ) Is configured to open and close.

  Further, both molds (10) and (20) have molding surfaces (11) and (21) on the opposite surface side, and when the molds (10) and (20) are closed, both molds (10) Surrounded by the molding surfaces (11) and (21) of (20), a sealed cavity (1) is formed.

  The movable mold (20) has a circumferential groove (23) continuous in the circumferential direction on the outer peripheral portion of the molding surface (21).

  The fixed mold (10) is provided with a gate (12) for injecting a molding material at the center of the molding surface (11), and the molding material is inserted into the cavity (1) through the gate (12). (Molten resin) can be injected. A resin injection machine (not shown) for injecting a molding material from the gate (12) is configured such that its injection cylinder moves in a horizontal direction corresponding to the mold opening direction of the mold.

  The molding surface (11) of the fixed-side mold (10) is provided with a component installation recess (13) for accommodating an insert component. The insert component employed in the present embodiment is configured by a bag-shaped metal member (30) having a bottomed hole (33) with one end (31) open and the other end (32) closed. .

  A protruding pipe portion (14) is provided on the bottom surface of the component installation recess (13) so as to protrude toward the mold (20) on the other side (movable side) along the mold opening direction (horizontal direction). Yes. The projecting pipe portion (14) is configured such that the pipe hole (15) is set to a negative pressure by suction means (not shown) and air is sucked from the pipe hole (15) at the tip of the pipe portion.

  The protruding pipe portion (14) has a radial dimension substantially corresponding to the inner diameter dimension of the bottomed hole (33) of the bag-shaped metal member (30). By inserting and engaging the projecting pipe portion (14) in the bottomed hole (33) so as to be substantially fitted, the bag-shaped metal member (30) is positioned in the radial direction (direction perpendicular to the axis). It is configured as shown.

  A chamfered portion (14a) is formed on the outer periphery of the tip of the protruding pipe portion (14). For this reason, when the protruding pipe portion (14) is inserted into the bottomed hole (33) of the bag-shaped metal member (30), the chamfered portion (14a) acts as a guide surface, so that the protruding pipe portion (14) The insertion operation, that is, the installation operation of the bag-shaped metal member (30) can be easily performed.

  Further, the length (projection amount) of the projecting pipe portion (14) is formed a little shorter than the depth of the bottomed hole (33) of the bag-shaped metal member (30), and the bag-shaped metal member (30) is opened. In a state where the protruding pipe portion (14) is inserted into the bottomed hole (33) of the bag-like metal member (30) until the side end portion (31) is joined to the bottom surface of the component installation recess (13), the protruding pipe The tip of the portion (14) is arranged near the bottom of the bottomed hole (33). Further, in this state, when the inside of the pipe hole (15) of the protruding pipe portion (14) is set to a negative pressure as described above, the inside of the bottomed hole (33) of the bag-like metal member (30) is vacuumed. Thus, the bag-shaped metal member (30) is configured to be sucked and held by the protruding pipe portion (14).

  In the present embodiment, the distance between the tip of the protruding pipe portion (14) and the bottom surface of the bottomed hole (33) in the bag-shaped metal member (30) is set short, that is, the protruding pipe portion (14). It is preferable to adopt a configuration in which the length of the is set longer. That is, when this configuration is adopted, the space sucked by the protruding pipe portion (14) in the bottomed hole (33) can be reduced, and the adsorption holding force of the bag-like metal member (30) can be improved. It is possible to hold the bag-shaped metal member (30) more reliably.

  Furthermore, in this embodiment, it is good to set the atmospheric pressure (degree of vacuum) in the pipe hole (15) of the protruding pipe part (14) to -50 to -100 kPa, more preferably -80 to -100 kPa. That is, when this atmospheric pressure is set within the above specified range, the bag-shaped metal member (30) can be accurately sucked and held.

  In the present embodiment, an insert-molded product (5) is manufactured by performing injection molding as follows using the molds (10) and (20) having the above-described configuration.

  First, as shown in FIG. 1, the bag-shaped metal member (30) as an insert part is set to the stationary mold (10). That is, the bag-shaped metal member (30) is accommodated in the component installation recess (13) such that the projecting pipe portion (14) is inserted into the bottomed hole (33). At this time, the bag-shaped metal member (30) is accurately stored sufficiently deeply so that the open end (31) is securely joined to the bottom surface of the component installation recess (13). In this accommodated state, the bag-shaped metal member (30) is held in the component installation recess (13) by engaging the inner peripheral surface of the bottomed hole with the protruding pipe portion (30).

  In this state, by setting the pipe hole (15) of the projecting pipe portion (14) to a negative pressure, the bag-shaped metal member (30) is attracted and held by the projecting pipe portion (14), and the bag-shaped metal member (30) is supported and fixed.

  In the present embodiment, before the bag-shaped metal member (30) is engaged with the protruding pipe portion (14), the inside of the pipe hole (15) of the protruding pipe portion (14) is set to a negative pressure. The bag-shaped metal member (30) may be held by suction while being engaged with the protruding pipe portion (14).

  Then, as shown in FIG. 2, the molds (10) and (20) are closed, and as shown in FIG. 3, molten resin as a molding material (R) is injected into the cavity (1) from the gate (12). To go.

  Here, in this embodiment, the injection path of the molding material (R) from the gate (12) in the cavity (1) has the following characteristics. That is, when the molding material (R) injected from the gate (12) is filled around the bag-shaped metal member (30), the closing side end portion (32) of the bag-shaped metal member (30) is filled first. It is configured as follows. For example, the molding material (R) injected from the gate (12) is first filled in the closed end (32) of the periphery of the bag-shaped metal member (30), and then into the component installation recess (13). It is configured to enter and wrap around the bag-shaped metal member (30). Specifically, the position of the gate (12) is arranged so as to correspond to the closing side end (32) of the bag-like metal member (30) installed in the component installation recess (13).

  In this way, by filling the molding material (R) into the closing side end (32) of the bag-like metal member (30) first, the bag-like metal member (30) is made into the component installation recess (13) by the injection pressure. Since it can be pressed in, the position of the bag-shaped metal member (30) can be reliably fixed at the time of material injection. Accordingly, it is possible to effectively prevent a problem that the bag-shaped metal member (30) is displaced at the time of injection of the molding material (R), and molding can be performed in a stable state. For this reason, for example, the mounting accuracy of the bag-like metal member (30) can be improved, and the quality can be improved.

  Immediately after injecting the molding material (R), the bag-like metal member (30) is surely fixed in position by the injection pressure, so immediately after the injection, the bag by vacuum suction of the projecting pipe portion (14) is used. Even if the suction of the metal member (30) is released, the positional deviation of the bag-like metal member (30) can be prevented. Accordingly, the adsorption of the bag-shaped metal member (30) by the protruding pipe portion (14) can be released at an early stage.

  On the other hand, as shown in FIG. 4, the molding material (R) is injected into the entire area of the cavity (1) including the circumferential groove (13). Then, after the molding material (R) is solidified (cured), the movable mold (20) is moved to open the molds (10) and (20) as shown in FIG.

  Thereafter, the molded product (5) is kicked out by a product take-out mechanism such as a kick pin (not shown) provided in the movable mold (20). Thereby, the molded product (5) falls into a predetermined collection location (product receiving box) by its own weight and is automatically collected.

  As described above, according to the method for manufacturing an insert-molded product of the present embodiment, the bag-shaped metal member (30) is sucked and adsorbed to the mold (10) by the bottomed hole (33) and placed in a predetermined position. Insert molded product (5) in which the hole for supporting the bag-shaped metal member is not formed in the molded resin portion (R) at the closed end (32) of the bag-shaped metal member (30), in other words, because there is something to support. It is possible to reliably form the insert molded product (5) in which the entire closed side end portion (32) of the bag-shaped metal member (30) is covered with the molding resin (R).

  In the present embodiment, since the laterally open molds (10) and (20) are used, the molded product (5) is simply kicked out by a kick pin or the like after the mold is opened. Can be dropped and recovered by its own weight. For this reason, it is not necessary to provide a product take-out device such as a robot, and the cost can be reduced by that amount, and there is no need for time to take out the product from the mold by the product take-out device etc. and move it to the product box. Time can be shortened and production efficiency can be further improved.

  Further, in the present embodiment, since the horizontal opening type molds (10) and (20) are used, it can be molded using a general-purpose horizontal injection molding machine, and dedicated equipment such as a vertical injection molding machine. The cost can be further reduced as compared with the case of using.

  Furthermore, since the bag-shaped metal member (30) can be supported and released from the mold (10) easily by suction and its release operation, the mold (10) of the bag-shaped metal member (30) It is possible to easily and accurately perform the installation operation and the detachment operation from the mold (10), and it is possible to further improve the work efficiency, and hence the production efficiency.

  Furthermore, in this embodiment, the adsorption | suction support means for adsorbing and supporting a bag-shaped metal member (30) is comprised by the protrusion pipe part (14), and the protrusion pipe part (14) is comprised by a bag-shaped metal member (30). Therefore, the bag-like metal member (30) can be supported by the mold (10) even by this engagement, and the bag-like metal member (30) can be further engaged. Thus, the bag-like metal member (30) can be installed more easily and smoothly.

  In addition, it is possible to position the bag-shaped metal member (30) simply by engaging the projecting pipe portion (14) into the bottomed hole (33) of the bag-shaped metal member (30), so that troublesome alignment work is required. Is unnecessary, and the installation operation of the bag-shaped metal member (30) can be performed more easily and smoothly.

Second Embodiment
6 and 7 are cross-sectional views for explaining a method for manufacturing an insert molded product according to the second embodiment of the present invention. As shown in both figures, the manufacturing method of the second embodiment is different from the manufacturing method of the first embodiment in that a bag-shaped metal member (30) is used as an insert part in the manufacturing method of the first embodiment. On the other hand, in the manufacturing method of the second embodiment, a metal cap nut (130) is used as an insert part. Needless to say, the cap nut (130) has a bottomed hole that is open at one end and closed at the other end, and the bottomed hole is a bottomed screw in which a thread groove is formed on the inner peripheral surface It is configured as a hole (133).

  In the second embodiment, the other configuration is substantially the same as that of the first embodiment, and therefore, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  Also in the manufacturing method of the second embodiment, the protruding pipe portion (14) of the fixed mold (10) is inserted into the bottomed screw hole (133) of the bag-like nut (130) as described above. Then, it is housed in the component installation recess (13). In this accommodated state, the cap nut (130) is held in the component installation recess (13) by engaging the inner peripheral surface of the bottomed screw hole with the protruding pipe portion (30).

  In this state, by setting the pipe hole (15) of the protruding pipe portion (14) to a negative pressure, the bag-shaped metal member (30) is attracted and held by the protruding pipe portion (14), and the bag-shaped metal member ( 30) is supported and fixed.

  Thereafter, the molds (10) and (20) are closed, and then the molding material (R) is injected into the cavity (1) from the gate (12) as shown in FIG. At this time, also in the present embodiment, like the first embodiment, the molding material (R) is first filled in the closed end portion (132) of the cap nut (130) around the cap nut (130). Thus, since the position of the cap nut (130) can be reliably fixed by the injection pressure, the same effects as described above, such as prevention of the position shift of the cap nut (130), can be obtained.

  Thus, as shown in FIG. 7, the molding material (R) is injected into the entire area of the cavity (1). After the molding material (R) is solidified (cured), the movable mold (20) is moved to open the molds (10) and (20), and the molded article (5) is kicked by a kick pin (not shown). By taking out, the molded product (5) is dropped to a predetermined collection point.

  Also in the second embodiment, similar effects can be obtained as in the first embodiment.

<Third Embodiment>
8-10 is sectional drawing for demonstrating the manufacturing method of the insert molded product which is 3rd Embodiment of this invention. As shown in these drawings, in the manufacturing method of the third embodiment, two members, a cap nut (130) and an annular cored bar member (40) such as a pressed steel plate product, are inserted. .

  That is, as shown in FIG. 8, the cap nut (130) is installed in the component installation recess (13) of the mold (10) in the same manner as described above, and the annular core member (40) is placed around the mold (20). Install in the groove (23). In the present embodiment, the inner peripheral side surface (23a) of the circumferential groove (23) in the movable mold (20) is configured as a core metal holding part (23a), and the inside of the annular metal member (40) The annular metal member (40) is held by the mold (20) by engaging (fitting) the peripheral surface with the inner peripheral side surface (23a) of the peripheral groove (23).

  After the cap nut (130) and the annular core member (40) are installed, the molds (10) and (20) are closed and then molded from the gate (12) into the cavity (1) as shown in FIG. Material (R) is injected. At this time, also in the present embodiment, in the same manner as described above, the molding material (R) is first filled in the closed end (132) of the cap nut (130) around the cap nut (130).

  Thus, as shown in FIG. 10, the molding material (R) is injected into the entire area of the cavity (1). After the molding material (R) is solidified (cured), the movable mold (20) is moved to open the molds (10) and (20), and the molded article (5) is kicked by a kick pin (not shown). Take out and collect.

  In the third embodiment as well, the same operational effects are obtained as described above. Furthermore, in the third embodiment, it is possible to install and insert the insert parts in both the pair of molds (10) and (20), thereby improving versatility.

  For reference, in vertical opening type dies, insert parts can usually be installed (placed) only on the lower mold, and it is difficult to form insert parts on both the upper and lower molds. It is. On the other hand, in this embodiment, it is possible to install and insert the insert parts (40) (130) in both the pair of molds (10) (20). In addition, in the present embodiment, even if one side mold (10) is arranged on the upper side and the other side mold (20) is arranged on the lower side to constitute a vertically open type, the upper mold (10) Insert parts such as cap nuts (130) can be installed by suction adsorption, and an annular core member (40) can be placed on the lower mold (20). In other words, in the present invention, even if the mold is configured as a vertically open type, it is possible to install and insert the insert parts in both molds.

  In the above embodiment, the case where the present invention is applied to a laterally open mold in which the pair of molds (10) and (20) is opened and closed along the horizontal direction is described as an example. However, the present invention can also be applied to a vertically open mold in which a pair of molds are opened and closed along the vertical direction.

  In the present invention, as a support means for supporting the bag-like member using the bottomed hole, in addition to the suction support means, for example, an engagement protrusion is provided on the mold side, and the engagement protrusion is provided in the bottomed hole. A means for supporting the bag-like member by inserting and engaging with the inside, a means for supporting by a magnetic adsorption, and the like can be used.

It is sectional drawing of the metal mold | die which shows the state at the time of installing insert components in the manufacturing method which is 1st Embodiment of this invention. It is sectional drawing of the metal mold | die shown in the state immediately after mold closing in the said manufacturing method. It is sectional drawing of the metal mold | die shown in the state in the middle of resin injection | pouring in the said manufacturing method. It is sectional drawing of the metal mold | die shown in the state immediately after completion of resin injection | pouring in the said manufacturing method. It is sectional drawing of the metal mold | die shown in the state immediately after mold opening in the said manufacturing method. It is sectional drawing of the metal mold | die shown in the state in the middle of resin injection | pouring in the manufacturing method which is 2nd Embodiment of this invention. It is sectional drawing of the metal mold | die shown in the state immediately after completion of resin injection | pouring in the manufacturing method of 2nd Embodiment. It is sectional drawing of the metal mold | die which shows the state at the time of installing insert components in the manufacturing method which is 3rd Embodiment of this invention. It is sectional drawing of the metal mold | die shown in the state in the middle of resin injection | pouring in the manufacturing method of 3rd Embodiment. It is sectional drawing of the metal mold | die shown in the state immediately after completion of resin injection | pouring in the manufacturing method of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cavity 10 ... One side metal mold 11 ... Molding surface 14 ... Projection pipe part 15 ... Pipe hole 20 ... Other side metal mold 21 ... Molding surface 30 ... Bag-shaped metal member (insert component)
31 ... Open end (one end)
32 ... Closure side end (other end)
33 ... Bottomed hole 130 ... Cap nut (insert part)
131 ... Open side end (one end)
132 ... Closure side end (other end)
133 ... Bottomed screw hole

Claims (5)

A method of manufacturing an insert-molded product in which a bag-like member with a bottomed hole whose one end is open and whose other end is closed is injection-molded as an insert part,
While preparing a pair of side-opening molds that open and close horizontally,
A support means for supporting the insert part using the bottomed hole is provided on the molding surface of one of the pair of molds,
With the insert means supported by the support means, the pair of molds are closed, and a molding material is injected into the cavity to mold, thereby forming a hole in the molded resin portion at the closed end of the insert part. A method for producing an insert-molded product, characterized in that an insert-molded product not obtained is obtained. A method of manufacturing an insert-molded product in which a bag-like member with a bottomed hole whose one end is open and whose other end is closed is injection-molded as an insert part,
While preparing a pair of molds to open and close,
A suction support means for sucking and supporting the insert part in the bottomed hole is provided on the molding surface of the mold on one side of the pair of molds,
With the insert support supported by the suction support means, the pair of molds are closed, and a molding material is injected into the cavity to form a hole, so that a hole is formed in the molded resin portion at the closed end of the insert component. An insert molded product manufacturing method characterized in that an insert molded product that is not formed is obtained.   The insert molding according to claim 2, wherein the suction support means has a projecting pipe portion that is inserted into and engaged with a bottomed hole of an insert part, and sucks from a pipe hole at a tip of the projecting pipe portion. Product manufacturing method.   The method for manufacturing an insert-molded product according to claim 2 or 3, wherein the molding material is filled first from the closed end of the insert-molded product in the periphery of the insert part in the cavity.   The insert part is a method for manufacturing an insert-molded product according to any one of claims 2 to 4, wherein the insert part is constituted by a cap nut having a thread groove formed on an inner peripheral surface of a bottomed hole.

Images