JP6346503B2 - Manufacturing method of insert molded product - Google Patents

Description

  The present invention relates to a method of manufacturing an insert molded product such as a switch pole board.

  Conventionally, as a method for manufacturing this type of insert molded product, for example, as described in Patent Document 1 below, the conductive plate in the mold is sandwiched in the vertical direction by the holding pins attached to the upper mold and the lower mold. Before pressing the pin, the presser pin is retracted before the insulating resin injected into the mold is cured, and the gap between the presser pin and the insulating resin is filled. A method for positioning the conductive plate has been proposed.

JP 2014-65176 A

  However, according to Patent Document 1, the conductive plate in the mold is sandwiched in the vertical direction, that is, sandwiched and positioned only in one direction. For this reason, for example, when the high-pressure insulating resin is filled in the mold, the conductive plate may be displaced in the direction perpendicular to the holding direction of the presser pin, that is, in the horizontal direction. As a result, in the insert molded product in which the insert member is shielded with the insulating resin, the thickness of the shielded insulating resin is partially different, and as a result, the insert member is partially exposed from the insulating resin. In an insert molded product such as a switch pole board that is required to have high waterproofness and insulation, it becomes a fatal defect so that it cannot be realized as a product.

  Accordingly, the present invention provides a method for manufacturing an insert molded product that solves the above-described problems in the prior art, can accurately shield a necessary portion of the insert member with a resin material, and can reliably ensure waterproofness and insulation. For the purpose.

In order to solve this problem, according to the present invention, an insert member having a shape obtained by bending a part of a flat plate material at a right angle is placed in a mold, and a molten resin material is placed in the mold. said insert member is injection a manufacturing method of the insert-molded article for molding insert, said insert member disposed in the mold, a pair of presser pin mounted for reciprocating in a horizontal direction opposite to each other The insert member is positioned by sandwiching a portion along the vertical direction of the insert member in the horizontal direction, and unlike the pair of presser pins, the insert member is provided with a pair of presser pins attached so as to be able to advance and retreat in the vertical direction facing each other. a clamping step of positioning across a portion along the horizontal direction of the members in the vertical direction, and an injection step of injecting the resin material into the mold, in the mold the resin Filled with, and in a state before the resin material is cured, the release of the positioning of the insert member is moved backward each of the pressing pin to a position where the distal end surface of each pressing pin extends along the inner surface of the mold and a lupine moving step to form a gap for pouring the resin material between the mold and the insert member, the resin material is the insert member and the mold is opened is insert-molded in a cured state And a step of taking out the insert-molded product.

Claim 2 is the method according to claim 1, wherein the insert molding, the pin moving step from retracting the presser pins positioned on the end of the mold, the center side of the mold retracting the pressing pins located, characterized in that.

  According to the present invention, the insert member installed in the mold is positioned by being pressed by the presser pin in each of the first direction and the second direction intersecting the first direction. The insert member can be three-dimensionally positioned with the presser pin. Therefore, when the resin material is injected while the insert member is positioned in the mold with these presser pins, the insert member is prevented from being pushed and moved in the mold by the pressure of the resin material. it can. Therefore, it is possible to reduce the possibility that the thickness of the resin material is partially different in the insert molded product, or the insert member is partially exposed from the resin material. As a result, the necessary part of the insert member can be shielded accurately and reliably with the resin material, and the waterproofness and insulation of the insert molded product can be reliably ensured.

  In addition, since the insert member installed in the mold is positioned by pressing with the presser pin in the vertical and horizontal directions, it is easier to achieve three-dimensional positioning of the insert member considering the opening and closing of the mold. In addition, since the insert member is pressed and positioned by the presser pins in the vertical direction and the horizontal direction orthogonal to each other, the three-dimensional positioning of the insert member can be ensured with higher accuracy.

  Further, the insert member in the mold is positioned by being sandwiched in the horizontal direction by a pair of presser pins, and the insert member is positioned by being sandwiched in the vertical direction by a pair of different presser pins, thereby inserting the insert member in the mold. The three-dimensional positioning of the member can be performed with the presser pin from the orthogonal direction. Therefore, positioning of the insert member in the mold can be more reliably performed, and there is a possibility that the thickness of the resin material of the insert molded product is partially different or the insert member is partially exposed from the resin material. It can be reduced more accurately.

  Further, even if the insert member has a shape in which a part of a flat plate material is bent at a right angle, a portion along the vertical direction of the insert member can be positioned between a pair of presser pins in the horizontal direction and positioned. A portion along the horizontal direction of the insert member can be positioned by being vertically sandwiched by another pair of presser pins. Therefore, even in an insert member having a shape obtained by bending a part of a flat plate material at a right angle, positioning in the mold can be performed more reliably, and the thickness of the resin material of the insert molded product may be partially different. The possibility that the member is partially exposed from the resin material can be reduced more accurately.

  In general, in the mold, the positioning accuracy of the insert member by the presser pin located on the center side of the mold is higher than the positioning accuracy of the insert member by the presser pin positioned on the end side of the mold. Therefore, after the inside of the mold is filled with the resin material and the resin material is not cured, the presser pin located on the end side of the mold is retracted and then located on the center side of the mold. By retracting the presser pin, displacement of the insert member when the presser pin positioned on the end side of the mold is retracted can be prevented by the presser pin positioned on the center side of the mold. Therefore, when the resin material is injected with the insert member positioned by the presser pin, the insert member is pressed by the pressure of the resin material and can be more reliably prevented from moving in the mold.

It is the schematic which shows the clamping state of the metal mold | die used for the manufacturing method of the insert molded product by one Embodiment of this invention. It is the schematic which shows the lower mold | type of the state which opened the said metal mold | die. It is the schematic which shows the state which injected the resin material in the mold clamping state of FIG. FIG. 4 is a schematic view showing a state in which a presser pin on the end side is retracted in a state where the resin material of FIG. 3 is injected. It is the schematic which shows the state which retracted the center side pressing pin in the state which injected the resin material of FIG. It is the schematic which shows the insert molded product manufactured with the said metal mold | die.

  A method for manufacturing an insert molded product according to an embodiment of the present invention will be described with reference to FIGS.

<Overall configuration>
The manufacturing apparatus 1 used for the manufacturing method of the insert molded product A is a two-plate type insert molding apparatus, and is a highly waterproof conductive plate B as an insert member (terminal) to be insert-molded in the insert molded product A. The purpose is to ensure performance and insulation performance. The conductive plate B is a conductive plate formed of, for example, a conductive metal material such as copper, and serves as a part serving as a switch pole board, terminal, fixed contact, or the like. Specifically, after the conductive plate B is insert-molded into the insert molded product A, as shown in FIG. 6, the portion excluding the front end portion in the longitudinal direction of the conductive plate B is shielded by the insulating resin C. In addition, a waterproof and insulating structure is ensured.

<Conductive plate>
As shown in FIG. 6, the conductive plate B is bent at one end B1 in the longitudinal direction of the elongated rectangular flat plate at a right angle along the width direction with respect to the main body B2 located at the center of the one end B1. It is made into the shape made to do. The conductive plate B has a shape in which the other end B3 in the longitudinal direction of the plate material is bent at right angles along the width direction toward the opposite side opposite to the one end B1. Therefore, the conductive plate B has a substantially S-shape in a side view in which both end portions B1 and B3 in the longitudinal direction of the main body portion B2 having a rectangular flat plate shape are bent in the opposite direction.

<Manufacturing equipment>
The manufacturing apparatus 1 includes a mold 4 composed of an upper mold 2 and a lower mold 3. The manufacturing apparatus 1 installs and places the conductive plate B in a molding space 5 as a molding portion that is a resin-filled region between the upper mold 2 and the lower mold 3 of the mold 4, and then the upper mold 2. In a state where the upper mold 2 and the lower mold 3 are clamped, an insulating resin C, which is a resin material, is injected and injected into the molding space 5 between the upper mold 2 and the lower mold 3 so that the conductive plate B is inserted. The molded insert molded product A is manufactured. The mold 4 includes an upper mold 2 that constitutes about a half of the upper side of the mold 4 and a lower mold 3 that constitutes about a half of the lower side of the mold 4.

<Upper mold>
An upper mold space 21 serving as a molding region having a substantially concave cross section opened downward is provided on a molding surface 2a as a parting line which is a lower surface of the upper mold 2. The upper mold space 21 includes an upper horizontal portion 21a that is a portion that covers one end portion B1 of the conductive plate B, a vertical portion 21b that is a portion that covers the main body portion B2 of the conductive plate B, and the other end portion B 3 of the conductive plate B. And a lower horizontal portion 21c serving as a portion covering the surface. The other end side in the longitudinal direction of the upper horizontal portion 21a is connected to the upper end side of the vertical portion 21b, and one end side in the longitudinal direction of the lower horizontal portion 21c is connected to the lower end side of the vertical portion 21b.

  A fitting recess 21d for fitting and positioning an upper half portion of the tip of the one end B1 of the conductive plate B in the thickness direction on one end side in the longitudinal direction of the upper horizontal portion 21a. Is provided. Then, the other half of the lower horizontal portion 21c in the longitudinal direction is also fitted and positioned by fitting about one half of the upper side in the thickness direction of the tip of the other end B3 of the conductive plate B. A fitting recess 21e is provided.

  The bottom part 21f of each of the upper horizontal part 21a, the vertical part 21b and the lower horizontal part 21c penetrates to the outside perpendicularly to the bottom part 21f of the upper horizontal part 21a, the vertical part 21b and the lower horizontal part 21c. Pin insertion holes 22a to 22c are formed. The pin insertion holes 22a are provided along the vertical direction as the vertical direction which is the first direction, and a plurality of, for example, two are provided at a predetermined interval in the upper horizontal portion 21a. The pin insertion holes 22b are provided along the horizontal direction as the second direction intersecting with the first direction, and a plurality of, for example, three are provided at predetermined intervals in the vertical portion 21b. The pin insertion holes 22c are provided along the vertical direction, and a plurality of, for example, two pins are provided in the lower horizontal portion 21c with a predetermined interval. The pin insertion hole 22a and the pin insertion hole 22b, and the pin insertion hole 22b and the pin insertion hole 22c are provided at positions shifted in the width direction (depth direction) of the upper mold 2 so as not to overlap each other. Yes.

  On the other end side in the longitudinal direction of the upper horizontal portion 21a, a gate 23 which is a resin injection port as an introduction port for injecting the insulating resin C into the molding space 5 of the mold 4 is provided. The gate 23 is provided along the vertical direction, penetrates the upper mold 2 and penetrates the upper horizontal portion 21a, and introduces the insulating resin C injected into the gate 23 into the molding space 5.

  In each of the pin insertion holes 22a to 22c, the end sides of the elongated cylindrical presser pins 24a to 24c are inserted and attached so as to be able to advance and retract. The presser pins 24a to 24c can be advanced and retracted along the axial direction of the pin insertion holes 22a to 22c. A flat pressing surface 25 perpendicular to the axial direction is formed at the tip of each pressing pin 24a to 24c. These pressing surfaces 25 are portions for pressing and positioning the upper side of the conductive plate B accommodated in the mold 4, and the pressing pins 24 a to 24 c are moved backward along the bottom portion 21 f of the upper mold 2. In this case, it is a portion constituting the bottom portion 21f of the upper mold 2 while closing the corresponding pin insertion holes 22a to 22c.

  Actuators (not shown) for moving the presser pins 24a to 24c forward and backward are attached to the base end side protruding from the upper mold 2 of the presser pins 24a to 24c. These actuators are, for example, hydraulic cylinders, air cylinders, and the like, and the corresponding presser pins 24a to 24c are moved forward and backward along the pin insertion holes 22a to 22c.

<Lower mold>
The lower die 3 has a similar configuration in which the upper die 2 is inverted in the vertical direction, and becomes a molding region having a substantially concave cross section formed on a molding surface 3a as a parting line which is the upper surface of the lower die 3. The lower mold space 31 is attached to face the upper mold space 21 of the upper mold 2. Similarly to the upper mold space 21, the lower mold space 31 includes an upper horizontal portion 31a that covers the one end B1 of the conductive plate B, a vertical portion 31b that covers the main body B2 of the conductive plate B, and a conductive portion. The lower horizontal part 31c used as the part which covers the other end part B3 of the plate B is comprised.

  The lower side in the thickness direction of the tip of one end B1 or the other end B3 of the conductive plate B is also provided at one end in the longitudinal direction of the upper horizontal portion 31a and the other end in the longitudinal direction of the lower horizontal portion 31c. Fitting recesses 31d and 31e are provided for fitting and positioning about one-half of the portion.

A pin insertion hole that penetrates the upper horizontal portion 31a, the vertical portion 31b, and the lower horizontal portion 31c to the outside perpendicularly to the bottom portion 31f of each of the upper horizontal portion 31a, the vertical portion 31b, and the lower horizontal portion 31c. 32a to 32c are formed. In each of the pin insertion holes 32a to 32c, the distal end sides of the elongated cylindrical presser pins 34a to 34c are inserted and attached so as to be able to advance and retreat. The presser pins 34 a to 34 c have the same outer diameter as the presser pins 24 a to 24 c attached to the pin insertion holes 22 a to 22 c of the upper die 2, and the upper die 2 is placed in the lower die space 31 of the lower die 3. With the upper mold space 21 facing each other and clamped, the upper mold space 21 is attached at a position concentrically facing the corresponding presser pins 24a to 24c. Further, a flat press surface 35 perpendicular to the axial direction is formed at the tip of each presser pin 34a to 34c. These presser surfaces 35 are portions for pressing and positioning the lower side of the conductive plate B accommodated in the mold 4, and the presser pins 34 a to 34 c are moved backward to follow the bottom 31 f of the lower die 3. In this case, it is a portion that constitutes the bottom 31f of the lower mold 3 while closing the pin insertion holes 32a to 32c.

  Actuators (not shown) for moving the presser pins 34a to 34c forward and backward are attached to the base end side protruding from the lower mold 3 of the presser pins 34a to 34c. These actuators are, for example, hydraulic cylinders, air cylinders, and the like, and the corresponding presser pins 34a to 34c are moved forward and backward along the pin insertion holes 32a to 32c.

<Manufacturing method>
Next, the manufacturing method of the insert molded product A using the said manufacturing apparatus 1 is demonstrated.

<Installation process>
First, the mold 4 is opened, and the other end of the conductive plate B is fitted to the fitting recess 31d of the upper horizontal portion 31a of the lower mold 3 while the tip of the one end B1 of the conductive plate B is fitted. The tip end portion of the end portion B3 is fitted into the fitting recess 31e of the lower horizontal portion 31c of the lower mold 3, and is positioned and set on the lower mold 3.

In this state, the corresponding actuator is driven so that each of the pressing surfaces 35 of the pressing pins 34a to 34c passes through the pin insertion holes 32a to 32c of the lower die 3 as shown in FIG. to a position for positioning in contact with, to project a predetermined distance into the lower mold space 31 than the bottom 31 f of the lower mold space 31 of the lower mold 3.

At this time, the lower surface of the one end portion B1 of the conductive plate B is placed and positioned on the presser pin 34a protruding to the upper horizontal portion 31a of the lower mold 3, and the left side surface of the main body portion B2 of the conductive plate B is It is supported by a pressing pin 34b protruding to the vertical portion 31b of the lower mold 3. Further, the lower surface of the other end portion B3 of the conductive plate B is placed and positioned on the presser pin 34c protruding to the lower horizontal portion 31c of the lower mold 3.

<Clamping process>
In this state, the lower mold 3 and the upper mold 2 are relatively moved in the approaching direction, the molding surface 3a of the lower mold 3 and the molding surface 2a of the upper mold 2 are brought into contact with each other, and the mold is clamped. At this time, about one half of the upper side of the tip of the one end B1 of the conductive plate B set in the lower die 3 is fitted into the fitting recess 21d of the upper horizontal portion 21a of the upper die 2. At the same time, the upper half of the tip of the other end B3 of the conductive plate B is fitted into the fitting recess 21e of the lower horizontal portion 21c of the upper mold 2 so that the fitting recess of the upper mold 2 is fitted. The leading end portions of the one end portion B1 and the other end portion B3 of the conductive plate B are sandwiched between the fitting recesses 31d and 31e of the lower mold 3 and 21e and 21d, and are positioned and fixed.

  Next, the corresponding actuator is driven to project the presser pins 24 a to 24 c from the pin insertion holes 22 a to 22 c of the upper mold 2 into the upper mold space 21 to a predetermined position for positioning the upper side of the conductive plate B.

As a result, as shown in FIG. 1, the upper surface of the one end B1 of the conductive plate B is positioned by the presser pin 24a protruding to the upper horizontal portion 21a of the upper die 2 and protrudes to the vertical portion 21b of the upper die 2. The right side surface of the main body B2 of the conductive plate B is positioned by the holding pin 24b. Further, by the pressing pins 24c projecting to the lower horizontal portion 21 c of the upper mold 2, the upper surface of the other end portion B3 of the conductive plate B is positioned, the upper mold 2 retainer pin 24a~24c and the lower mold 3 holding The conductive plate B is positioned and held between the pins 34a to 34c in each of the vertical direction and the horizontal direction.

<Injection process>
Thereafter, the molten liquid insulating resin C is gradually poured into the mold 4 from the gate 23 of the upper mold 2, and as shown in FIG. 3, the insulating resin C is injected into the mold 4. Injection into the molding space 5 and self-filling. At this time, the insulating resin C fills the molding space 5 excluding the portions where the presser pins 24a to 24c and 34a to 34c are located, and covers the periphery of the presser pins 24a to 24c and 34a to 34c. Then, the filling of the insulating resin C into the molding space 5 is completed.

<First pin moving process>
Then, after the insulating resin C is injected into the molding space 5 in the mold 4 and the molding space 5 is filled with the insulating resin C, the corresponding actuator is driven, as shown in FIG. 2 and the pressing surface 25 of each pressing pin 24a-24c, 34a-34c located in the edge part side in each upper horizontal part 21a, 31a, vertical part 21b, 31b, and lower horizontal part 21c, 31c of the lower mold | type 3, These presser pins 24a to 24c and 34a to 34c are moved backward until 35 reaches a position along the bottoms 21f and 31f of the upper mold 2 and the lower mold 3, that is, a flush position.

<Second pin moving step>
Furthermore, after the retreating movement of the presser pins 24a to 24c and 34a to 34c located on the end side in each of the upper horizontal portions 21a and 31a, the vertical portions 21b and 31b, and the lower horizontal portions 21c and 31c is completed, As shown in FIG. 5, each actuator located on the center side in each of the upper horizontal portions 21a, 31a, vertical portions 21b, 31b and lower horizontal portions 21c, 31c of the upper die 2 and the lower die 3 is driven. Each of the presser pins 24a to 24c and 34a to 34c until the presser surfaces 25 and 35 are positioned along the bottoms 21f and 31f of the upper mold 2 and the lower mold 3, that is, until they are flush with each other. -34c is moved backward.

  In the first and second pin moving steps, the presser pins 24a to 24c and 34a to 34c are in the state before the insulating resin C is cured (the state changes from liquid to solid), that is, the presser pins 24a retracted. In a state where the insulating resin C can be filled and filled in the gaps between the conductive plates B and 24c, 34a to 34c, they are moved backward. And as the speed which makes these presser pins 24a-24c and 34a-34c retract, positioning of the conductive plate B by these presser pins 24a-24c, 34a-34c is cancelled | released, and these presser pins 24a-24c, 34a-34c When moving backward, the insulating resin C flows around between the conductive plate B and the pressing pins 24 a to 24 c and 34 a to 34 c, so that the conductive plate B is in a predetermined position in the molding space 5 of the mold 4. It is adjusted to the extent that it does not deviate from.

  The insulating resin C injected into the molding space 5 of the mold 4 is a space in which the presser pins 24a to 24c and 34a to 34c are located along with the operation of the presser pins 24a to 24c and 34a to 34c retracting. And the gaps between the pressing surfaces 25 and 35 of the pressing pins 24a to 24c and 34a to 34c and the conductive plate B are filled. In the molding space 5 of the mold 4, since the insulating resin C is filled, the conductive plate B is positioned and held by the pressure (pressurization) by the insulating resin C in the molding space 5. Even when the pins 24 a to 24 c and 34 a to 34 c are retracted, the conductive plate B is positioned and held by the pressure of the insulating resin C.

<Removal process>
In the state after the insulating resin C injected into the molding space 5 of the mold 4 is cured (solidified), the mold 4 is moved relatively so as to separate the upper mold 2 and the lower mold 3 and the mold is opened. and, as shown in FIG. 6, the insert-molded product a in which a portion other than the distal end portion of the one end portion B1 and the other end B 3 is coated is shielded with an insulating resin C of the conductive plate B, the mold 4 It is taken out from the molding space 5. At this time, when the insert molded product A is taken out from the molding space 5 of the mold 4, the insulating resin C remaining in the gate 23 is also removed together with the insert molded product A.

<Effect>
As described above, both ends B1 and B3 of the three-dimensional conductive plate B having a substantially S-shape in side view installed in the mold 4 are connected to the upper horizontal portions 21a, The presser pins 24a, 24c, 34a, 34c attached to 31a and the lower horizontal parts 21c, 31c are sandwiched and positioned from opposite vertical directions, and the main body part B2 of the conductive plate B is fixed to the upper die The presser pins 24b and 34b attached to the vertical portions 21b and 31b of the 2 and lower molds 3 are sandwiched and positioned from opposite horizontal directions.

As a result, the conductive plate B which is installed in the molding space 5 between the upper mold 2 and lower mold 3 of the mold 4, the presser pin 24a~24c of the upper mold 2 and lower mold 3, at 34 a - 34 c, Three-dimensional positioning can be performed over the vertical and horizontal directions. Therefore, when the insulating resin C is injected into the molding space 5 of the mold 4 in a state where the conductive plate B is positioned in the mold 4 with these presser pins 24a to 24c and 34a to 34c, this insulating resin is used. It is possible to prevent the conductive plate B from being moved in the molding space 5 from a three-dimensional direction by pressing the conductive plate B with a pressure such as C injection pressure.

  Therefore, even if the conductive plate B has a three-dimensional shape with bent both ends B1 and B3, the positioning and fixing of the conductive plate B in the mold 4 can be reliably performed. 5 can be reliably prevented from being displaced when the insulating resin C is injected. Therefore, there is a great possibility that the thickness of the insulating resin C in the molded insert molded product A is partially different or the conductive plate B is partially exposed from the insulating resin C at an unnecessary portion. It can be lost. As a result, it is possible to shield the necessary portions excluding the respective end portions of both end portions B1 and B3 of the conductive plate B with the insulating resin C with high accuracy and ensure the waterproofness and insulating property of the insert molded product A. It can be secured. Therefore, higher waterproof performance and high insulation can be applied to the insert molded product A, and the use of the insert molded product A can be limited.

  In particular, since the conductive plate B installed in the mold 4 is positioned by being sandwiched by the pressing pins 24a to 24c and 34a to 34c in two directions perpendicular to the horizontal direction and the vertical direction, The three-dimensional positioning of the conductive plate B in consideration of the opening / closing direction of the mold 4 configured by the upper mold 2 and the lower mold 3 to be opened can be reliably realized with an easier configuration. At the same time, since the conductive plate B is sandwiched and positioned by the presser pins 24a to 24c and 34a to 34c in the two directions of the horizontal direction and the vertical direction orthogonal to each other, the three-dimensional positioning of the conductive plate B is accurate. You can do it well.

  Further, in general, in the mold 4, the positioning accuracy of the conductive plate B by the press pins 24 a to 24 c and 34 a to 34 c positioned on the center side of the mold 4 is the press pin positioned on the end side of the mold 4. It is higher than the positioning accuracy of the conductive plate B by 24a-24c, 34a-34c. Therefore, in a state where the molding space 5 of the mold 4 is filled with the insulating resin C and before the insulating resin C is cured, as shown in FIG. 2 steps of retracting only the presser pins 24a to 24c and 34a to 34c positioned on the side, and then retracting the presser pins 24a to 24c and 34a to 34c positioned on the center side of the mold 4 as shown in FIG. It was set as the structure made into the pin movement process of.

  As a result, when the presser pins 24 a to 24 c and 34 a to 34 c positioned on the end side of the mold 4 are retracted, the displacement of the conductive plate B is caused by the presser pins 24 a to 24 c positioned on the center side of the mold 4. 34a to 34c can be reliably prevented with high accuracy. Therefore, when the insulating resin C is injected in a state where the conductive plate B is three-dimensionally positioned by the presser pins 24a to 24c and 34a to 34c, the conductive plate is subjected to a pressure such as an injection pressure of the insulating resin C. As B is pressed, the movement of the conductive plate B in the molding space 5 of the mold 4 can be more reliably prevented.

  Further, after the insulating resin C is injected into the molding space 5 of the mold 4, the pressing surfaces 25 and 35 of the pressing pins 24 a to 24 c and 34 a to 34 c are in a state before the insulating resin C is cured. The upper mold 2 or the lower mold 3 is retracted to a position flush with the bottom portions 21f and 31f of the lower mold 3. For this reason, the insulating resin C can be rotated and filled in the gaps (spaces) between the pressing surfaces 25 and 35 of the retreated pressing pins 24a to 24c and 34a to 34c and the conductive plate B.

  Further, since the insulating resin C is filled in the molding space 5 of the mold 4 while the conductive plate B is positioned by the pressing pins 24a to 24c and 34a to 34c, the molding space 5 is filled. The conductive plate B is positioned and held by the pressure of the insulating resin C. For this reason, even when each pressing pin 24a-24c, 34a-34c is retracted, the conductive plate B can be positioned and held by the pressure of the insulating resin C.

[Others]
In the above-described embodiment, the conductive plate B installed in the mold 4 is three-dimensionally positioned from the two directions perpendicular to the vertical direction and the horizontal direction by the presser pins 24a to 24c and 34a to 34c. However, as long as the conductive plate B can be positioned three-dimensionally, even if the direction is different from the vertical direction and the horizontal direction, the conductive plate is sandwiched between the two intersecting directions with the pressing pins. By positioning, the same operation effect as the above-mentioned one embodiment can be produced.

  Further, with the insulating resin C filled in the molding space 5 of the mold 4, only the presser pins 24 a to 24 c and 34 a to 34 c located on the end side of the mold 4 are moved backward as shown in FIG. 4. After that, as shown in FIG. 5, the presser pins 24 a to 24 c and 34 a to 34 c positioned on the center side of the mold 4 are moved back in a two-stage pin moving process, but the mold forming space 5 is filled. When the conductive plate B in the molding space 5 is reliably positioned and held by the pressure of the insulating resin C, the presser pins 24a to 24c, so that the state shown in FIG. All of 34a-34c may be retracted once, i.e. simultaneously. Further, if necessary, the presser pins 24a to 24c and 34a to 34c may be retracted with a time difference over a plurality of times of two or more stages.

  In addition, the insulating resin C is injected into the mold 4 in a state where the conductive plate B installed in the mold 4 is pressed and positioned by the press pins 24a to 24c and 34a to 34c, and then the press pins 24a to 24c, 34a to 34c are retracted, but after the conductive plate B installed in the mold 4 is positioned by the pressing pins 24a to 24c and 34a to 34c, a part of the conductive plate B is cut. It is also possible to use a method in which the presser pins 24a to 24c and 34a to 34c are retracted after injecting the insulating resin C.

  Furthermore, although the conductive plate B having conductivity is used as the insert member, the insert member used in the present invention may be a member having insulation properties. Moreover, by using the mold 4 corresponding to the shape of the conductive plate B to be inserted, the shape of the conductive plate B may be any shape as long as it is a three-dimensional solid shape. Further, as the resin material injected into the mold 4, in addition to the insulating resin material, that is, the insulating resin C, a conductive resin material or the like can be used.

  In addition, one of the upper mold 2 and the lower mold 3 of the mold 4 is a movable mold, and the other of the upper mold 2 and the lower mold 3 is a fixed mold, or each of the upper mold 2 and the lower mold 3 is used. Can also be mobile.

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus 2 Upper mold 2a Molding surface 3 Lower mold 3a Molding surface 4 Mold 5 Molding space 21 Upper mold space 21a Upper horizontal part 21b Vertical part 21c Lower horizontal part 21d, 21e Fitting recessed part 21f Bottom part 22a-22c Pin insertion Hole 23 Gate 24a-24c Holding pin 25 Holding surface 31 Lower mold space 31a Upper horizontal portion 31b Vertical portion 31c Lower horizontal portion 31d, 31e Fitting recess 31f Bottom portion 32a-32c Pin insertion hole 34a-34c Holding pin 35 Holding surface A Insert molded product B Conductive plate (insert member)
B1 One end B2 Main body B3 Other end C Insulating resin (resin material)

Claims (2)

An insert molded product in which a part of a flat plate material is bent at a right angle is placed in a mold, and a molten resin material is injected into the mold to insert the insert member. A method,
Said insert member disposed in the mold, thereby positioning across a portion along the vertical direction of the insert member in the horizontal direction by a pair of presser pin mounted for reciprocating in a horizontal direction opposite to each other Unlike the pair of presser pins, a mold clamping step of positioning the portion along the horizontal direction of the insert member in the vertical direction with a pair of presser pins attached so as to be able to advance and retreat in the vertical direction opposite to each other ;
An injection step of injecting the resin material into the mold;
In a state where the mold is filled with the resin material and the resin material is not cured, each of the presser pins is retracted to a position where the tip surface of each presser pin is along the inner surface of the mold. and lupine moving step to form a gap for pouring the resin material between said releasing the positioning of the insert member, the mold and the insert member Te,
Taking out the insert-molded product in which the insert member is insert-molded by opening the mold in a state where the resin material is cured, and
A method for producing an insert-molded product, comprising: In the manufacturing method of the insert molded article according to claim 1 ,
The pin moving step is prepared from retracting, the insert molding, characterized in that retracting the presser pins located on the center side of the mold the retainer pin positioned on the end of the mold Method.