JPH0997666A - Manufacture of connector, die for manufacturing connector, manufacture of resin molded body, and die used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture front retainer type connectors at low cost. SOLUTION: A die S in the fixed side and a die R in the movable side which can be opened to and closed from the die S are installed. The die S in the fixed side is composed of a feceiving plate 6 and a die plate 7 in the fixed side and at the same time, in the inside of the die S core pins 9, 10 for a housing 3 and a retainer 4 are built in a manner that they can slide and the housing 3 and the retainer 4 are enabled to be molded between the die R in the rotatable side and the pins. After molding, the pins are pulled back from both molding faces. The die R in the rotatable side is rotated to set the molded housing and the molded retainer 4 on the opposite to each other. In this condition, by setting the die R in the movable side close to the fixed side, the retainer 4 and the housing 3 can be assembled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a connector of a type including a retainer mounted from the front side or the rear side of a connector housing.

[0002]

2. Description of the Related Art Conventionally, a so-called front or rear retainer type connector has been known (see FIGS. 17 and 18). Briefly describing the front type shown in FIG. 17, a cavity 31 for inserting the terminal fitting 30 is provided inside the connector housing 3.
And a lance 32 engageable with the terminal fitting 30 is formed in the cavity 31. The lance 32 is cantilevered so that it can be flexibly deformed. When the terminal fitting 30 is inserted, the lance 32 flexes and retracts into the flexing space held on the lower surface side of the terminal fitting 30.
When is inserted to the regular position, it can return and engage with the terminal fitting 30 (primary locking state).

On the other hand, a retainer 4 is attached to the front portion of the connector housing 3 to prevent the terminal fitting 30 from coming off. A holding piece 34 that projects into the bending space of the lance 32 projects from the retainer 4, and when the retainer 4 is mounted on the housing 3, the holding piece 34 goes under the lance 32 to bend the lance 32. Deformation is regulated, whereby the terminal fitting 30 is reliably prevented from coming off (secondary locking state).

Although not shown in detail, the retainer 4
Can be held in two positions, a temporary locking position where the insertion depth is shallow with respect to the housing 3 and a main locking position which is deeper than this, and the bending of the lance 32 is allowed at the temporary locking position to allow the terminal fittings to be bent. 30 is ready for insertion. Then, the full locking position regulates the bending of the lance 32 as described above to prevent the terminal fitting 30 from coming off.

On the other hand, in the rear retainer type shown in FIG. 18, a cavity 40 is provided inside the connector housing.
Is formed so that the terminal fitting 42 can be inserted therein. Similar to the front type, the retainer is designed to be movable between the temporary locking position and the main locking position, and is formed in the cavity of the jaw 43 of the terminal fitting 42 at the temporary locking position. Terminal locking claw 44
When the terminal retainer 42 is held in a retaining state, the edge 41 of the rear retainer is secondarily engaged with the rear end of the terminal fitting 42 when the terminal retainer 42 is moved to the final locking position.

In the case of manufacturing a connector of this type, conventionally, the housing 3 and the retainer 4 are separately molded, that is, they are molded by individual molding machines, and these are brought to an assembly site and assembled as a connector. Was going to do. And such assembling has been performed by an automatic machine equipped with a parts feeder or manually.

[0007]

However, in the above-mentioned conventional technique, the housing 3 and the retainer 4 are molded and assembled separately from each other, and a finished product is obtained through the steps of molding, carrying, and assembling. In addition, when it is assembled by the work of the worker, another inspection process is required. In this case, a large number of steps up to completion increase the product cost. Further, since it is necessary to manage the mold for each of the housing 3 and the retainer 4,
In addition, management costs will be added.

The present invention has been developed and devised in view of the above-mentioned conventional problems, and an object of the present invention is to provide a method capable of inexpensively manufacturing a connector.

[0009]

According to a first aspect of the present invention for achieving the above object, a terminal metal fitting can be inserted into the inside of the connector housing from the rear side and a mating terminal metal fitting can be inserted from the front side. While a large cavity is formed,
A method of manufacturing a connector equipped with a retainer that is mounted from the front or the rear of the connector housing to hold the terminal fitting in a retaining state, wherein the molding surfaces that open and close are closed and held between them. After the molten resin is filled in the housing molding space and the retainer molding space, the molding surfaces are separated from each other, and at least one of the molding surfaces is rotated about the axis, thereby forming the molded housing and the retainer. It is characterized in that they are coaxially aligned, and then the housing and the retainer are brought relatively close to each other to assemble them in a predetermined state.

According to a second aspect of the present invention, a cavity is formed inside the connector housing, into which the terminal fitting can be inserted from the rear side, and the mating terminal fitting can be inserted from the front side. A mold for manufacturing a connector equipped with a retainer that is mounted from the rear side and holds the terminal fitting in a retaining state, and has a pair of molds that can be opened and closed, and at least one of these molds The molding surface portion of is rotatably supported around the rotation axis, and the rotating molding surface portion is arranged such that a portion involved in the housing molding and a portion involved in the retainer molding are symmetrical with respect to the rotation axis. It is characterized by that.

According to a third aspect of the present invention, there is provided a method for producing a resin molded product composed of at least two or more kinds of resin parts, which are combined with each other. To hold a plurality of molding parts between the facing surfaces of the two molds, and to fill each of these molding parts with a molten resin to open the mold, and then at least one of the facing surfaces of the two molds. Is rotated around the axis to move each molded resin part to a position where it is coaxially opposed to the resin part that is the assembly partner, and then the resin is left open with both molds open. It is characterized in that the parts are brought into a predetermined assembled state by relatively moving the parts along the axial direction.

According to a fourth aspect of the present invention, in the method according to the third aspect, the molding core pin, which is projected into each of the molding portions at the time of filling the molten resin, is molded into the molding portions prior to the assembly of the resin components. It is characterized by being removed from the.

According to a fifth aspect of the present invention, there is provided a mold for producing a resin molded product, which is composed of at least two kinds of resin parts, and which are combined with each other. A pair of molds that can be approached or separated from each other are provided, and a molding space for molding each resin component when the molds are closed can be held at different positions between the facing surfaces of the two molds. At least one side of the facing surface is rotatable about the rotation axis by a predetermined angle, the molding spaces are arranged on a concentric circle around the rotation axis, and at least one of the molds is to be assembled. It is characterized in that an assembly mechanism is provided for relatively bringing the resin parts to be relatively close to each other in a mold open state and to assemble them into a predetermined state.

[0014]

According to the first aspect of the present invention, the molten resin is filled into the housing molding space and the retainer molding space between the closed molding surfaces, and when the molten resin is solidified, the molding surfaces are separated from each other. Next, one of the molding surfaces is rotated about its axis to align the molded housing with the retainer. After that, if the housing and the retainer are relatively brought close to each other, a connector in which the housing and the retainer are assembled can be obtained.

According to the second aspect of the present invention, the housing molding space and the retainer molding space are retained by closing the molds of both molds, and these are filled with the molten resin. Once solidified, the molds are opened leaving the housing and retainer on the molding surface of each mold. Next, when at least one of the molds is rotated about the rotation axis, the part where the housing is molded is replaced with the part where the retainer is molded, and as a result, the molded housing and the retainer face each other. Then, if the molded housing and the retainer are brought relatively close to each other, a connector in which the housing and the retainer are assembled can be obtained.

According to the third and fifth aspects of the present invention, a mold space is retained between the molds by closing the molds, and the molten resin is filled in each space. The mold is opened after solidification, and the resin parts are left on the facing surfaces of the respective molds. Next, when the facing surface of at least one of the molds is rotated around the axis, the one resin component and the other resin component that is an assembly partner thereof face each other coaxially. After that, if these resin parts are brought close to each other along the axial direction in the mold open state, the resin parts are assembled in a predetermined state.

According to the fourth aspect of the present invention, when the resin parts are assembled with each other, the molding core pin is extracted in advance. Therefore, the core pin does not interfere with the assembly of the parts.

[0018]

The effects of the inventions of claims 1 and 2 are as follows. Since the housing and the retainer can be molded and assembled in the mold, an inexpensive connector integrated with the retainer can be obtained by shortening the process.

According to the third and fifth aspects of the present invention, since a series of steps for molding a plurality of resin parts and assembling them are carried out in the same mold, an inexpensive resin molded product can be obtained by shortening the steps. can get. Moreover, since the resin parts are assembled by simply operating the ejecting mechanism while the mold is open, it operates compared to the type in which both parts are assembled using the mold closing operation. It takes less time and requires less energy.

According to the fourth aspect of the invention, the effect of smoothly assembling the parts by extracting the core pin can be obtained.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
A description will be given based on FIG. The target of manufacture of this example is the front retainer type connector as described above, but the present invention is also applicable to the rear retainer type connector.
Further, a mold for realizing the method of the present invention is incorporated in an injection molding system, and a main part thereof has a schematic structure as follows, but the drawings shown in FIGS. Also, for convenience of description, the structure is simplified and does not directly correspond to the connector shown in FIG. Further, each of FIGS. 1 to 6 is a combination of those corresponding to the P-P section shown in FIG. 7 and the Q-Q section shown in FIG.

The mold of this embodiment is composed of a fixed mold S and a movable mold R, and the movable mold R has a movable mold plate 2 with respect to a fixed substrate 1. Is rotatably mounted around the rotation axis X. The movable side mold plate 2 has a surface facing the fixed side mold S as a molding surface 2A,
A housing-forming recess 11 and a retainer-forming receiving portion 12 are provided here. In this example, as shown in FIG. 8, the housing forming recess 11 and the retainer forming receiving portion 12 are provided at two locations. And, these pairs of pairs are arranged orthogonally, and
These are set on the same circumference with respect to the rotation axis X of the movable side mold plate 2. The movable side mold plate 2 is connected to a drive mechanism (not shown) equipped with an indexing device, and the movable side mold plate 2 can be displaced by a reciprocating angle of 90 ° around the rotation axis (90).
It may be possible to rotate in one direction every °).

The fixed-side mold S is arranged coaxially with the movable-side mold R, and also has a receiving plate 6 fixed to the mounting plate 5 and a fixed-side mold plate arranged in front of the receiving plate 6. 7 and the surface of the fixed-side mold plate 7 that faces the movable-side mold plate 2 is the molding surface 7A. And this molding surface 7
A is normally formed with a retainer forming recess 7B that is coaxial with the two retainer forming receiving portions 12 and faces each other. On the other hand, a spring SP is provided between the receiving plate 6 and the stationary mold plate 7.
Is interposed and biases the stationary-side mold plate 7 in a direction of separating it from the receiving plate 6. However, although not shown, the receiving plate 6
An appropriate stopper means is provided between the fixed side mold plate 7 and the fixed side mold plate 7 to regulate the distance between the two within a fixed range.

Further, the base plate side of the retainer molding core pin 9 is incorporated in the receiving plate 6, and a pair of retainer molding core pins 9 are provided corresponding to the retainer molding concave portions 7B of the movable side mold plate 2, respectively. The retainer molding core pins 9 are attached to the receiving plate 6
The base end side thereof is incorporated therein, and the tip end side thereof is slidably inserted into a pin insertion hole 9A which is formed laterally in the figure in the fixed-side mold plate 7 and communicates with the retainer forming recess 7B. In the mold open state as shown in FIG. 1, the retainer molding core pin 9 has its tip positioned on the front side of the retainer molding concave portion 7B, but the receiving plate 6 and the fixed side mold plate 7 are in close contact with each other. In the state where both mold plates 2 and 7 are closed, there is a space for forming the retainer between the retainer forming concave portion and the retainer forming receiving portion 12. It is supposed to be owned.

Further, a pair of housing molding core pins 10 are incorporated in the receiving plate 6. Both housing molding core pins 10 are provided corresponding to the housing molding recesses 11 of the movable side mold plate 2, and these pairs are arranged orthogonally to the pair of retainer molding core pins 9, and Fixed side mold S axis, that is, movable side mold R
Are arranged on the same circumference with respect to the axis (rotation axis X). Further, the core pins 10 for molding both housings are also incorporated in the receiving plate 6 at their proximal ends, and the distal ends thereof are slidably inserted into the through holes 10A which laterally penetrate the fixed mold plate 7. Normally, both housing molding core pins 10 are coaxial with the housing molding recess 11 on the movable mold plate 2 side in the horizontal direction in the drawing, and their tip positions are flush with the molding surface 7A or slightly retracted. There is. However, when the mold is closed as shown in FIG. 2, it is projected into the housing molding concave portion 11 and holds a housing molding space between it.

The molded retainer 4 and the housing 3 are opened and the respective molding recesses 11 and 12 are formed.
When held at, the surfaces to be assembled with each other are exposed so as to face each other. In addition, both of the molding recesses 11 and 12 have gates (not shown) for filling the molten resin.

The movable mold R having the above-mentioned structure is connected to a drive mechanism (not shown) so that it can be moved in the left-right direction in the figure. As a result, a state in which the fixed-side mold plate 7 and the movable-side mold plate 2 are in close contact with each other, a state in which the fixed-side mold plate 7 and the fixed-side mold plate 7 are in close contact with each other, and the fixed-side mold plate 7 is in the movable-side mold It can reciprocate between a state where it is separated from the plate 2.

Next, the procedure for forming and further assembling the housing 3 and the retainer 4 using the mold having the above structure will be described. When the movable mold R moves from the mold open state shown in FIG. 1 toward the fixed mold S, the fixed mold plate 7 first contacts the movable mold plate 2. When the movable mold R is further advanced as it is, the fixed mold plate 7 comes into close contact with the receiving plate 6 while compressing the spring. Along with this, both retainer molding core pins 9 advance along the insertion hole 9A to reach the retainer molding recess 7B, and as a result, a space for molding the retainer 4 is retained between the retainer molding receiving portion 12 and the retainer molding receiving portion 12. . On the other hand, since both housing molding core pins 10 enter into the corresponding housing molding recesses 11, a housing molding space is formed between them. In this state, the molten resin is filled into each molding space.

When the resin has solidified after a predetermined time has elapsed, the movable mold R is retracted to open the mold. Then
The housing 3 remains in the housing forming recess 11 and the retainer 4 remains in the retainer forming recess 7B. Further, as the mold is opened, the fixed side mold plate 7 is fixed by the spring SP.
Since the space between the core pin 9 and the receiving plate 6 is separated,
Retreats to home position.

After the molding process has been completed and the mold has been opened as described above, the movable side mold plate 2 is rotated around the rotation axis X (the central axis of the movable side mold) by a rotary drive mechanism (not shown).
゜ Rotate. As a result, both the retainers 4 and the corresponding housing 3 coaxially face each other in the horizontal direction in the drawing. After that, the movable side mold R is moved forward again to move the fixed side mold plate 7
When the movable mold plate 2 and the movable mold plate 2 are brought into contact with each other (may be brought close to each other by a certain distance), the retainer 4 is assembled from the front side of the housing 3 in a temporarily locked state. However, since the base of the retainer 4 is supported by the inner wall of the retainer forming recess 7B, the retainer 4 does not retract while being pushed into the housing 3.

In this way, when the assembly operation is completed and the fixed side mold S retracts again, the housing molding recess 1 is formed.
A connector in which the housing 3 and the retainer 4 are integrated remains in the inside of 1, and an ejector pin (not shown) protrudes and discharges the connector out of the mold. After that, the movable side mold plate 2 becomes 9
After rotating in the 0 ° return direction and returning to the original position, both molds S and R are on standby in preparation for the next molding.

As described above, according to this example, the housing 3
Also, since the forming process of the retainer 4 and these assembly processes can be performed at the same time, there is no need to carry and assemble as in the past, and the shortening of the process shortens the lead time for product completion and reduces the manufacturing cost. it can. In addition, different types of molded products such as the housing 3 and the retainer 4 can be molded in one mold, which is advantageous from the viewpoint of mold management.

<Second Embodiment> FIGS. 9 to 16 show a second embodiment of the present invention. The mold of this embodiment is composed of a movable mold M and a fixed mold N.
The movable mold M has a movable mold plate 16 attached to the die plate 15. On the molding surface of the movable template 16, a housing molding recess 17 for molding the housing is formed. The movable die M is connected to a drive mechanism (not shown) so that the entire movable die M can reciprocate in the left-right direction in the figure.

On the other hand, the fixed side mold N has a fixed mold plate 19 fixed to the mounting plate 18, and an intermediate plate 20 fixed to the mounting plate 18 and arranged between the movable mold plate 16 and the fixed mold plate 19. It consists of and. Furthermore, fixed template 1
A retainer forming receiving portion 21 for forming the retainer 4 is formed on the forming surface of 9, and the retainer forming receiving portion 21 is arranged at the same height position as the housing forming recess 17 in the drawing. The arrangement is different with respect to the horizontal axis shown.

The intermediate plate 20, as shown in FIG.
The outside is surrounded by the outer frame 24, and the outer frame 2
4 is rotatably supported by a pin shaft 25 at the vertical position in the figure. In this example, it is connected to a rotation mechanism (not shown) and can be inverted every 180 °. Further, in the intermediate plate 20, in a normal state (for example, in the state shown in FIG. 9), a retainer forming recess 26 is formed on the surface facing the fixed die plate 19, and when the die is closed (see FIG. 10). State) and retainer 4 between retainer forming receiving portion 21
The molding space of is retained. On the other hand, housing core pins 23 are respectively provided at positions which are the surfaces facing the movable mold plate 16 in the normal state and are symmetrical with respect to the rotation center of the intermediate plate 20 (the axis connecting the pin shafts 25). When the mold is closed, the molding space of the housing 3 is retained between the housing molding recess 17 and the housing molding recess 17.

Further, a spring SP is interposed between the fixed side template 19 and the outer frame 24 to urge the outer frame 24 away from the fixed side template 19. However, a stopper means (not shown) is provided between them so that they are not separated more than a certain amount.

The mold of the second embodiment has the above-mentioned structure and is used as follows. From the mold open state shown in FIG. 9, the entire movable side mold M is brought close to the fixed side mold N by a drive mechanism (not shown). As a result, after the movable side mold plate 16 first comes into contact with the intermediate plate 20 and the outer frame 24, and when the movable side mold further advances, the intermediate plate 20 and the outer frame 24 compress the spring SP and the fixed side mold plate. Stick to 19. Thus, both molds N,
M is in a mold closed state, at which time the housing core pin 23 enters into the housing molding concave portion 17 and the molding space of the housing 3 is held therebetween, and the retainer molding receiving portion 26 and the retainer molding receiving portion are provided. By aligning with 21, the molding space of the retainer 4 is held between them. Under this condition, both molding spaces are filled with the molten resin.

When the resin has solidified after the lapse of a predetermined time, the movable mold M is retracted to open the mold. As a result, the housing 3 remains on the movable mold plate 16 side, and the retainer 4 remains on the retainer forming concave portion 26 of the intermediate plate 20 (state in FIG. 11).

Thereafter, the intermediate plate 20 is rotated 180 ° around the pin shaft 25 by a rotating mechanism (not shown). As a result, the front and back of the intermediate plate 20 are reversed, and the retainer 4 faces the housing 3 coaxially with respect to the horizontal direction in the drawing. After that, the movable die M is moved forward again, and the spring 22 is brought into close contact with the intermediate plate 20 side without being compressed. As a result, the retainer 4 is assembled from the front side of the housing 3 in the temporarily locked state.

When the assembly operation is completed as described above and the movable mold M is retracted again, the connector in which the housing 3 and the retainer 4 are integrated remains in the housing molding recess 17 and is shown in the figure. Not ejected by ejector pin and ejected out of mold. Then, when the housing core pin 23 is returned to the original position and the intermediate plate 20 is inverted again, both molds are returned to the original state and are ready for the next molding.

Also according to such a second embodiment, the first
The same action and effect as those of the embodiment can be exhibited, and the present invention can be applied to a rear retainer type.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIGS. First, the connector to be molded will be briefly described with reference to FIG. However, the connector described here shows a so-called front retainer type, but the molding object of the present invention is also applicable to a rear type retainer.

The connector is composed of a connector housing 170 and a retainer 171 which are integrally molded of a synthetic resin material. The housing 170 is on the rear side (see FIG. 1).
9 is a base portion 172 for accommodating terminal fittings (not shown), while a front portion (left side portion thereof) has a hood portion 173 formed by expanding the front end portions of the terminal fittings in parallel. The retainer 171 is opened toward the mounting direction.

A terminal accommodating chamber 174, into which a terminal fitting can be inserted from the rear, is formed in the base 172 along the axial direction of the housing 170, and an elastic piece 175 that can be flexibly deformed upward in the drawing is cantilevered inside. Is formed in. When the terminal fitting is inserted, the elastic piece 175 is designed to escape into the retreat space 176 held above the drawing. On the opposite side, the terminal fitting is inserted when the terminal fitting is inserted to the normal depth position. A locking protrusion 177 that can be engaged with the metal fitting is formed. Then, a main locking edge 178 is formed on the inner side of the locking projection 177 so that the retainer 171 can be engaged with the connecting arm 179 side when the retainer 171 is fully locked.

An insertion hole 181 into which a holding piece 180 of a retainer 171 to be described later is inserted is bored in the base 172 along the axis of the housing 170 and to a predetermined depth. A locking step 182 is formed at a position near the front end of the insertion hole 181, and when the retainer 171 is in the temporary locking state, the temporary locking claw 183 of the holding piece 180 is formed.
Is capable of engaging with. However, the hole depth after the locking step 182 is set to a dimension that allows the retainer 171 to be inserted deeper until it is fully locked.

On the other hand, the retainer 171 as a whole has a hood portion 17
It is formed in the shape of a rectangular frame that can be fitted inside 3,
Inside thereof, there is a substrate 184 that can abut the front end of the base 172.
Are formed. Three protruding members to be described below are formed from the substrate 184, and the longest holding piece 180 among them is formed at a higher position in the drawing and protrudes along the inserting direction into the hood portion 173. The retainer 17 can be inserted into the insertion hole 181 described above.
In the first temporary locking position, the temporary locking claw 18 formed on the way
3 engages with the locking step 182 in the insertion hole 181. Further, the shortest restricting piece 185 projects in the axial direction at a position near the center of the substrate 184. The restricting piece 185 can be inserted into the retreat space 176 when the retainer 171 is in the main locking position, and does not reach the retreat space 176 when the retainer 171 is in the temporary locking position. Therefore, at this position, the terminal fitting can be inserted into the terminal accommodating chamber 174, but the retainer 171
When is moved to the main locking position, the restricting piece 185 enters the retracted space 176 to restrict the bending of the elastic piece 175. Further, a flexible and deformable connecting arm 179 projects along the axial direction at the lower part of the board 184 in the drawing, and a hook portion 186 is formed at the tip thereof. Then, when the retainer 171 is in the main locking position, the hook portion 186 can elastically engage the main locking edge 178.

Next, the structure of the mold for manufacturing the connector having the above structure will be described below, but this mold is incorporated in the injection molding system. And the figure used for explanation is only to show the outline of the main part,
Details have been omitted for the sake of simplicity. Therefore, the above-described configuration of the connector does not appear in detail, and for example, the number and shape of core pins, which will be described later, are also only outlined in the drawing.

Now, the mold of this embodiment is formed by the movable side and the fixed side, and the fixed side mold 101 arranged on the left side in the figure has a fixed mounting plate 103, and the right side in the figure. The fixed side template 1 through the spacer block 104.
05 is arranged. Two guide bushes 114, shown in the drawing, are embedded in both ends of the fixed-side template 105 in parallel with the axis. In the fixed-side template 105, a part of the inner side of the housing 170 (retraction space 17) is mainly formed.
6. A main core pin 107 for molding (6, a part of the locking protrusion 177, etc.) is attached toward the movable mold 102 in parallel with the axial direction.

Further, a retainer molding recess 108 for mainly forming an outer frame portion of the retainer 171 is provided on a surface of the fixed-side template 105 facing the movable side, and at a position slightly away from the main core pin 107. It is dented. Further, the retainer 17 is provided in the fixed-side template 105.
The core pin 10 for molding a part of the inside 1 (a part of the temporary locking claw 183, a part of the hook portion 186 of the connecting arm 179, etc.).
9 is erected parallel to the main core pin 107, and its tip is exposed in the recess 108 for forming the retainer and the fixed side mold 1
It is made to project more than 01.

On the other hand, the fixed side mold plate 105 and the fixed mounting plate 10
A fixed-side protruding plate 10 is disposed between the fixed-side protruding plate 10 and the fixed-side protruding plate 10.
The fixed-side protruding plate 110 is connected to a drive mechanism (not shown), and reciprocates between the fixed-mounting plate 103 and the fixed-side backing plate 140. Further, a pair of push pins 111, shown in the figure, that both form and protrude the retainer 171 are attached to the fixed-side protruding plate 110. These push pins 111 pass through the fixed-side backing plate 140 and the fixed-side template 105 so as to be able to move in and out and surround the core pin 109, and their tips always form a part of the retainer forming recess 108. That is, a part of the outer side portion of the retainer 171 can be formed, and when the fixed-side protruding plate 110 moves as shown in FIG. 23, it engages with the molded retainer 171 and protrudes it. You can do it.

Next, the movable side mold 102 will be described. The movable side mold 102 is normally arranged coaxially with the fixed side mold 101, and the whole of the movable side mold 102 is connected to a drive mechanism (not shown) so that the movable side mold 102 can be moved in the left-right direction in the figure. You can move to
It is possible to reciprocate between a mold closing position for the fixed mold 101 and a mold opening position where a predetermined gap is held between the two. Further, the movable mold 102 has a rotation axis R at its axis, and the whole is supported so as to be rotatable around this rotation axis R by a predetermined angle. Therefore, as will be described later in detail, the movable mold 102 is mounted at a molding position where the housing 170 and the retainer 171 can be molded, and an assembly in which the housing 170 and the retainer 171 are coaxially opposed to each other by rotating 180 ° in the drawing from this position. It can be rotated to and from the position.

Further, the movable side mold 102 is provided with a movable mounting plate 112, like the fixed side. A movable side backing plate 142 is attached to the movable mounting plate 112 via a spacer block 150, and front and rear movable side mold plates 113 and 141 are supported in front of the movable side backing plate 142. . A spring 118 is interposed between the movable side mold plates 113 and 141 to urge the front movable side mold plate 113 forward.

At the end of the movable side backing plate 142, two guide pins 106 shown in the drawing penetrate the both movable side mold plates 113 and 141 and project in the axial direction toward the fixed side. These are inserted into the corresponding guide bushes 114 when the mold is closed and the mold is opened to guide both these operations. Further, a housing molding recess 115 is provided at a position facing the fixed side of the front movable mold plate 113, which corresponds to the main core pin 107 in the normal state, and a molding core pin 109 of the retainer 171 and both pushes. Retainer forming recess 1 is provided at a position corresponding to the pin 111.
16 are each formed in a recess. Further, a gate (not shown) for filling the molten resin is opened in both of the molding recesses 115 and 116.

In this embodiment, both molds 10 are used.
The space in which the retainer 171 is molded by closing the molds 1, 102 and the space in which the housing 170 is molded are on the axis of the mold, that is, on a concentric circle at a position equidistant from the rotation axis R, and 180 ° apart. It is arranged.

In the movable mold 102, a pin plate 117 is arranged between the movable backing plate 142 and the movable mounting plate 112. This pin plate 1
Reference numeral 17 is connected to a drive mechanism (not shown) so that it can be moved forward or backward along the axial direction. In addition, the pin plate 117 has a housing 17
The ejector pin 120 for sticking out the connector after the 0 and the retainer 171 are assembled is attached parallel to the axis. The tip of the ejector pin 120 is always substantially flush with the inner wall surface of the housing molding recess 115, but the assembly of the housing 170 and the retainer 171 is completed, and the front pin plate 117 moves forward. Then, it is possible to eject the connector in the assembled state by protruding into the housing molding recess 115.

The housing 17 is attached to the rear movable mold plate 141.
A sub-core pin 119 for molding 0 is attached parallel to the axial direction. The sub-core pin 119 moves from the molding of the housing 170 to a predetermined operation (see FIGS. 20 to 22).
(Until the time) until the locking step 182 and the like can be formed by protruding into the housing molding concave portion 115, when assembling the retainer 171 and the housing 170,
As shown in FIG. 21 and subsequent figures, both movable side mold plates 113 and 141
When they are separated from each other, they are extracted from the housing molding recess 115, that is, from the molded housing 170.

Next, the housing 170 and the retainer 171 are manufactured by using the mold of the third embodiment configured as described above.
The process of molding and the process of assembling these will be described.

As shown in FIG. 20, the mold is closed, that is, the front movable mold plate 113 and the fixed mold plate 105.
When the and are in close contact with each other, the housing forming recess 11
5 is a closed space, and the closed space surrounded by the movable-side and fixed-side retainer forming recesses 108 and 116 is a space for forming the retainer 171. In this state, when the both sealed spaces are filled with the molten resin through the gate (not shown), the housing molding recess 115 is formed.
Since the main core pin 107 and the sub core pin 119 are projected into the inside thereof, the outer shape of the housing 170 and the internal structure such as the retracting space 176 and the locking protrusion 177 are formed by these. In addition, the space for molding the retainer 171 is formed in both molding recesses 108, 116.
, And each core pin 109 projects into this space, which shape the retainer 171 and its internal structure such as the temporary locking claw 183 and the connecting arm 179.

The resin is filled as described above, and when the resin is solidified after a predetermined time elapses, the movable die 102 is moved.
Is retracted to reach the mold opening state shown in FIG. As the mold is opened, the housing 170 becomes a housing molding recess 1
15 and the retainer 171 is retained in the retainer forming recess 108 on the fixed side. On the other hand, in the process of opening the mold, the spring 118 causes both movable side mold plates 113,
Since the parts 141 are separated from each other, the sub-core pin 119 is extracted from the housing 170 as described above. As described above, the sub-core pin 119 has the locking step portion 18
2 or the like, that is, if the sub-core pin 119 is not removed from the housing 170 before the retainer 171 and the housing 170 are assembled in a later step, the assembly will be hindered. Is required.

Next, as shown in FIG. 22, the movable side mold 1
When the whole 02 is rotated about the rotation axis R by half, the movable mold 102 moves from the molding position to the assembly position. At this time, as described above, the housing 170 and the retainer 1
Since 71 is held at a position concentric with the rotation axis R and shifted by 180 °, the molded housing 170 is coaxially opposed to the retainer 171 as the movable die 102 rotates. Move to.

After that, in the fixed side mold 101, the fixed side protruding plate 110 is advanced (see FIG. 23).
Then, the molded retainer 171 is pushed out from the retainer molding concave portion 108 on the fixed side by each push pin 111, and is advanced toward the housing 170 side.
At this time, the core pin 109 of the retainer 171 is pulled out from the retainer 171. That is, this core pin 109
Is for forming the temporary locking claws 183 of the retainer 171, and for the same meaning as described above, unless the retainer 171 is removed before the assembly with the housing 170, the assembly is performed. It will cause problems. In this way, when the retainer 171 is fitted toward the housing 170 by each push pin 111, both the core pins 109 and 119 have already been extracted, so that the temporary locking claw 183 and the locking step portion 18 are formed.
The engagement with 2 does not cause any trouble. Thus, the retainer 171 and the housing 170 are assembled.

Next, when the fixed-side protruding plate 110 is returned to the original position, the connector in which the housing 170 and the retainer 171 are integrated remains on the movable side (FIG. 24 state). Thereafter, when the pin plate 117 is moved forward, the ejector pin 120 pushes the housing 170, so that the connector in the assembly state (temporary locking state) is pushed out from the housing molding recess 115 and discharged out of the mold. When the removal of the connector is completed, the pin plates 117 respectively return to their original positions, and the movable die 102 also rotates in the opposite direction to the above and returns. Both molds 101, 10
When No. 2 returns to the original state, it becomes a standby state for the next molding.

As described above, according to this example, the housing 1
Since the molding process of 70 and the retainer 171 and the process of assembling these can be performed at the same time, there is no need to go through the independent process such as the conventional transportation and assembly, and the lead time to complete the product can be shortened by shortening the process. It can be shortened and the manufacturing cost can be reduced.

Moreover, in this example, when assembling the housing 170 and the retainer 171, it is sufficient to operate the push pin. That is, it is considered that such an assembling operation is performed by utilizing the mold closing operation, but this requires a large operating portion and requires a large amount of energy. In that respect, according to the present application,
Since the number of moving parts is minimal, the structure is simple and the energy required for operation is small.

Also, the housing 170 and the retainer 171.
Since different kinds of molded products can be molded in one mold, it is also advantageous from the viewpoint of mold management. Further, in this example, these molding core pins 109 and 119 are attached to the housing 170 and the retainer 17 prior to the assembly.
Since both of them are pulled out, the effect of smoothly assembling them can be obtained.

<Fourth Embodiment> FIGS. 26 to 32 show a mold according to a fourth embodiment of the present invention. First, the fixed mold 101 will be described. In this example, the fixed mold plate 1 is used.
Reference numeral 05 is arranged so as to be separated from and in close contact with the punched plate 104. A spring 121 is interposed between the two and urges the fixed-side template 105 in the separating direction (the direction in which it is pushed to the right in the drawing). However, the distance between the two is regulated within a fixed distance by a stopper means (not shown). Further, in order to smoothly perform such a contacting / separating operation with respect to the fixed-side mold plate 105, each guide post 106 is erected from the fixed mounting plate 103, and the punched plate 104 is provided.
After being penetrated, the fixed side mold plate 105 is slidably inserted, and further, it can be inserted into the corresponding guide bush 114 in the movable side mold plate 113.

The main core pin 107 is also erected from the fixed mounting plate 103 side, and the tip side thereof is fixed side mold plate 105.
At a through hole 122 penetrating in parallel with the axial direction. When the fixed-side mold plate 105 is in close contact with the punched plate 104 (when the mold is closed, the state shown in FIG. 26), the portion of the main core pin 107 that is directly involved in the molding of the housing 170 is exposed through the through hole 122. Then, it is projected into the housing-forming recess 115 on the movable side, but when both are separated, it is retracted from the housing-forming recess 115 and is completely immersed in the through hole 122.

Further, the molding core pin 109 of the retainer 171 is also erected on the fixed mounting plate 103, and the fixed side mold plate 10 is provided.
5 is inserted into a slide hole 123 that penetrates in parallel with the axial direction. Then, the fixed-side mold plate 105 is the first punched plate 1.
In the mold-closed state in which the retainer 171 comes into close contact with 04, the tip portion of the core pin 109 that is involved in the molding of the retainer 171 is exposed through the slide hole 123, and the movable-side retainer molding concave portion 1
Although they enter the inside of the retainer 16, they are retracted from the retainer forming recess 116 and completely immersed in the slide hole 123 when they are separated from each other.

Furthermore, a fixed side ejector pin 124 is mounted between the main core pin 107 and the core pin 109 on the fixed mounting plate 103, and the fixed side template 105 is fixed.
It is slidably inserted against. The fixed ejector pin 124 is inserted into the escape hole 125 formed in the movable mold plate 113 when both molds 101 and 102 are closed, and when the mold is opened,
It is arranged to be substantially flush with the surface of the fixed-side template 105. Then, as will be described later, the fixed-side template 105 is shown in
When the connector is slightly retracted by the return pin 127 as shown in (4), the connector part can be ejected from the mold by protruding from the fixed side mold plate 105 and protruding the housing part of the connector in the integrated state.

On the other hand, for the movable die 102,
In the embodiment, the retainer 171 is projected and the housing 1
There is a difference in that the housing 170 is projected and integrated instead of being assembled to the 70. That is, the first and second pin plates are coaxially arranged between the movable side mold plate 113 and the movable mounting plate 112 via the space member 128.

An ejector pin 131 is attached to the first pin plate 129 in parallel with the shaft center, and is connected to a drive mechanism (not shown) so as to be able to move forward and backward along the shaft center. The ejector pin 131 has its tip always substantially flush with the surface of the housing molding recess 115, but the second pin plate 1
When moving forward together with 30 by a predetermined stroke, as shown in FIG.
As shown in FIG. 0, the molded housing 170 is pushed out of the housing molding recess 115 to remove the housing 170.
Can be assembled to the retainer 171 in a temporarily locked state.

Further, the second pin plate 130 is similarly connected to the drive mechanism (the first pin plate 12).
It may be combined with or separate from the drive mechanism of 9), and can be moved forward and backward along the axis. A return pin 127 is attached to the second pin plate 130 in parallel with the axis, and the tip of the return pin 127 is always flush with the surface of the movable side mold plate 113. As shown in FIG. 30, when it moves forward together with the first pin plate 129, it comes into contact with the fixed-side template 105. However, when it is further advanced by a predetermined stroke thereafter, the fixed-side template 105 is retracted against the spring 121, and the fixed-side ejector pin 124 can eject the connector assembled in the temporarily locked state.

As in the third embodiment, the movable side mold is entirely rotatable about the rotation axis R between the molding position and the assembly position, and is formed between the molds by closing the mold. The space for forming the retainer and the space for forming the housing are set so as to be arranged concentrically around the rotation axis R and shifted by 180 °.

A sub-core pin 119, which is involved in the molding of the housing 170, is embedded in the movable side mold plate 113.

The mold of the fourth embodiment is configured as described above, and in the mold closing state shown in FIG. 26, the mold spaces held between the mold plates 105 and 113 are respectively filled. The housing 170 and the retainer 171 are molded by filling with molten resin. Then, when the molten resin is solidified, the movable mold 102 is retracted. This movable mold 1
With the backward movement of 02, the fixed side mold plate 105 and the punched plate 104 are separated by the spring 121, so that the molded housing 170 is removed from the main core pin 1.
07, the core pin 109 is pulled out from the retainer 171 (see FIG. 27). Further movable mold 102
When the mold moves backward, as shown in FIG. 28, the mold plates 105 and 113 on the movable side and the fixed side are separated from each other, and the mold is opened.

Next, the entire movable die 102 is half-turned about the rotation axis R and moved from the molding position to the assembly position. As a result, the molded housing 170 moves to a position where it is coaxially opposed to the retainer 171 (FIG. 29).
Status).

When the above-mentioned assembly position is reached, as shown in FIG. 30, first and second pin plates 129 and 130 are provided.
Move forward together. This allows ejector pin 1
31 pushes the housing 170 to project from the inside of the housing molding recess 115 and push it into the retainer 171 held on the fixed side. While the housing 170 is protruding from the housing molding recess 115, the sub-core pin 1
Since 19 is pulled out at the same time, there is no obstacle in the assembly with the retainer 171 (engagement of the temporary locking claw 183 and the locking step 182), and both are assembled in the temporary locking state. At this time, the tip of the return pin 127 loosely contacts the surface of the fixed-side template 105, and a part of the front end of the housing 170 is fixed to the fixed-side ejector pin 124.
Touch the tip of.

Next, as shown in FIG. 31, when only the second pin plate 130 further advances, the return pin 1
27 retracts the stationary template 105 against the spring 121. As a result, the fixed-side ejector pin 124 acts so as to relatively project the housing 170, so that the connector integrated with the retainer 171 falls off from the fixed-side retainer molding recess 108 and is discharged to the outside of the mold. . In this way, when the connector is taken out, the first and second pin plates 129 and 130 respectively return to their original positions, and the movable side mold as a whole also returns to its original position to prepare for the next molding.

As described above, in the fourth embodiment as well as in the third embodiment, the connector can be manufactured easily and inexpensively.
Assembly can be done.

The other structure is the same as that of the third embodiment, and thus the same function and effect can be exhibited.

The present invention can be modified in various ways,
The following modifications are also included in the technical scope of the present invention.

(1) In the first and second embodiments, the operation of assembling the molded retainer 4 and the housing 3 is performed in conjunction with the mold closing operation again. However, instead of this You may do the following. For example, a knockout pin (not shown) is provided in the movable mold plate 2. Then, in the state after completion of the molding as shown in FIG. 4 or 12, the knockout pin is driven to push the molded housing 3 toward the retainer 4 side, thereby integrating the retainer and the housing. It is also possible to do so. The integrated connector is detached from the housing molding recess by its own weight (a dedicated ejector pin may be provided) and is discharged out of the mold.

(2) In the third and fourth embodiments, the case of assembling the housing of the connector and the retainer is shown and described, but the present invention is widely applicable to other resin molded products, and the molded parts The number is not limited to two and can be applied when assembling three or more parts.

(3) In the third and fourth embodiments, <
Although only the movable side mold is displaced or moved along the axial direction, both molds may be moved.

(4) In the third and fourth embodiments, the movable side mold is rotated as a whole, but it is also possible to rotate only the surface facing the fixed side. Both the fixed side may be rotated.

(5) In the third and fourth embodiments, the case of molding and assembling one connector has been shown, but a type in which a plurality of connectors are handled at the same time may be used.
In this case, for example, the rotation angle of the mold must be set in accordance with the angular arrangement of the plurality of pairs of molding spaces arranged on the concentric circles.

[Brief description of drawings]

FIG. 1 is a sectional view showing a mold opening state of a molding die according to a first embodiment.

FIG. 2 is a cross-sectional view showing a molded state in the first embodiment.

FIG. 3 is a cross-sectional view showing a mold open state after molding in the first embodiment.

FIG. 4 is a cross-sectional view showing the alignment state in the first embodiment.

FIG. 5 is a cross-sectional view showing an assembled state of the housing and the retainer in the first embodiment.

FIG. 6 is a cross-sectional view showing a state in which a finished product is taken out according to the first embodiment.

FIG. 7 is a front view of a movable-side template according to the first embodiment.

FIG. 8 is a front view of a fixed-side template according to the first embodiment.

FIG. 9 is a cross-sectional view showing a mold open state before molding in the second embodiment.

FIG. 10 is a sectional view showing a molded state in the second embodiment.

FIG. 11 is a cross-sectional view showing a mold open state after molding in the second embodiment.

FIG. 12 is a cross-sectional view showing an inversion operation state of an intermediate plate in the second embodiment.

FIG. 13 is a cross-sectional view showing an assembled state of the housing and the retainer in the second embodiment.

FIG. 14 is a cross-sectional view showing a state in which a finished product is taken out according to the second embodiment.

FIG. 15 is a perspective view of an intermediate plate according to the second embodiment.

FIG. 16 is a front view of a fixed template according to the second embodiment.

FIG. 17 is a cross-sectional view showing a front retainer type connector in the first embodiment and the second embodiment.

FIG. 18 is a sectional view showing a rear retainer type connector.

FIG. 19 is a cross-sectional view of a connector which is a molding target of the third embodiment.

FIG. 20 is a sectional view showing a filling state of molten resin in the third embodiment.

FIG. 21 is a cross-sectional view showing a mold open state in the third embodiment.

FIG. 22 is a cross-sectional view showing a centered state of the housing and the retainer in the third embodiment.

FIG. 23 is a sectional view showing an assembling operation in the third embodiment.

FIG. 24 is a cross-sectional view showing a returning state of the fixed-side protruding plate in the third embodiment.

FIG. 25 is a sectional view showing the discharging operation in the third embodiment.

FIG. 26 is a cross-sectional view showing a resin filled state by a mold according to a fourth embodiment.

FIG. 27 is a cross-sectional view showing a core pin withdrawn state according to the fourth embodiment.

FIG. 28 is a cross-sectional view showing the mold open state in the fourth embodiment.

FIG. 29 is a cross-sectional view showing a centered state of the housing and the retainer in the fourth embodiment.

FIG. 30 is a cross-sectional view showing an initial state of assembly in the fourth embodiment.

FIG. 31 is a cross-sectional view showing a completed state of an assembling operation in the fourth embodiment.

FIG. 32 is a sectional view showing a discharging operation of the connector according to the fourth embodiment.

[Explanation of symbols]

 2, 101 ... Fixed-side mold plate 3, 170 ... Housing 4, 71 ... Retainer 7, 102 ... Movable-side mold plate 11, 115 ... Housing molding recess 12 ... Retainer molding receiving part 16 ... Movable mold plate 17 ... Housing molding Recessed portion 19 ... Fixed mold plate 20 ... Intermediate plate 21 ... Retainer forming receiving portion 107 ... Main core pin 108 ... Retainer forming recess 109 ... Core pin 116 ... Retainer forming recess 119 ... Sub-core pin

Claims (5)

[Claims] 1. A connector housing is formed with a cavity into which a terminal fitting can be inserted from the rear and into which a mating terminal fitting can be inserted from the front, while being mounted from the front or the rear of the connector housing. A method for manufacturing a connector having a retainer for holding the terminal fittings in a retaining state, comprising: closing a molding surface that is openable and closable to form a housing molding space and a retainer molding space that are held between them. After the molten resin is filled, the molding surfaces are separated from each other, and at least one of the molding surfaces is rotated about the axis,
Align the molded housing and the retainer coaxially,
After that, the housing and the retainer are brought relatively close to each other to assemble them in a predetermined state, and a method for manufacturing a connector. 2. A connector housing is provided with a cavity into which a terminal fitting can be inserted from the rear and a mating terminal fitting can be inserted from the front, while being mounted from the front or the rear of the connector housing. A mold for manufacturing a connector having a retainer for holding the terminal fitting in a retaining state, comprising a pair of molds that can be opened and closed, and a molding surface part of at least one of the molds is The rotating molding surface is rotatably supported, and the rotating molding surface portion is characterized in that a portion involved in housing molding and a portion involved in retainer molding are arranged in symmetrical positions with respect to the rotation axis. Mold for manufacturing connectors. 3. A method for producing a resin molded product composed of at least two kinds of resin parts, which are formed by combining these parts with each other, by closing a pair of molds which are openably and closably opposed to each other. A plurality of molding parts are held between the facing surfaces of the mold, the molding resin is filled in each molding part to open the mold, and then at least one side of the facing surfaces of the two molds is rotated around the axis. By rotating the molded resin parts to the position where they are coaxially facing the resin parts to be assembled, and then the resin parts are moved relative to each other with both molds left open. A method for manufacturing a resin molded product, characterized in that these are brought into a predetermined assembled state by moving them in the axial direction. 4. The molding core pin as set forth in claim 3, wherein the molding core pin is inserted into each of the molding portions when the molten resin is filled, and the molding core pins are removed from the molding portions prior to assembling the resin components after molding. A method for producing a resin molded product, comprising: 5. A mold for producing a resin molded product, which is composed of at least two kinds of resin parts and combined with each other, and can be relatively approached or separated along the axial direction. A pair of dies are provided, and a molding space for molding each resin part when the dies are closed can be held at different positions between the opposing surfaces of the dies, and at least the opposing surfaces of the dies are provided. One side is rotatable around a rotation axis by a predetermined angle, and each molding space is arranged on a concentric circle around the rotation axis, and at least one of the molds has resin parts to be assembled with each other. A mold for manufacturing a resin molded product, comprising an assembling mechanism for relatively approaching each other in a mold open state and assembling them in a predetermined state.