JPH08415B2 - Female side connector insert molding method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of insert molding a female connector in which tulip-shaped terminals or cantilever-shaped terminals each having a curved portion at the tip of a flat plate portion are mounted in parallel.

[0002]

2. Description of the Related Art As a terminal of a female connector of an electronic component, for example, a tulip type (tuning fork type) terminal having a curved tip side is used. Conventionally, in the case of manufacturing a female connector using such a tulip-shaped terminal 1, the flat plate of the tulip-shaped terminal 1 in which the tip side of the flat plate portion 2 is separated to form a curved portion 3 as shown in FIG. A protruding portion 4 is formed on the side of the portion 2, and the protruding portion 4 is formed by passing the protruding portion 4 through the rectangular cylindrical portion 6 of the molded portion 5 separately molded as shown in FIG. The tulip-shaped terminal 1 is positioned by fitting it into the engagement groove portion 7 formed on the inner wall of the.

Thereafter, as shown in FIG. 9, each square tube portion 6 was filled with another resin 8 by a syringe to manufacture a female connector 9. In this way, in the female-side connector 9 in which the tulip-shaped terminals 1 and 1 are mounted in parallel, it is not possible to perform die-cutting between the curved portions 3 and 3 on the tip side. After forming the rectangular tube portion 6 having a sufficient size for insertion, and inserting and fixing it here,
Since the square tube portion 6 is filled with the resin 8, there are two steps, and there is a problem that workability is extremely poor.

[0004]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks and provides a female connector insert molding method in which workability is greatly improved by setting terminals in a mold and performing insert molding. Is.

[0005]

According to the present invention, there is provided a female-side connector insert molding method in which a plurality of tulip-shaped terminals or cantilever-shaped terminals each having a curved portion formed at a tip of a flat plate portion through a mold portion are attached in parallel. In, the mold forming the cavity is divided into a plurality of pieces and supported so as to be able to come into contact with and separate from each other, and the flat plate portion of the terminal is sandwiched by the separation surface of each mold member, and the mold is arranged between the curved portions of the adjacent terminals. The mold member is formed so as to escape the curved portion of the terminal, and the mold members are combined and supported so that the terminal penetrates the cavity, and then the cavity is filled with resin to form the mold part. It is characterized in that when the mold members are formed, and then the mold members are separated and the mold member arranged between the curved portions of the terminal is removed, the die members are forcibly removed within the elastic limit of the curved portions.

[0006]

According to the female connector insert molding method of the present invention, a tulip-shaped terminal or a cantilever type in which a flat plate portion is provided with a curved portion in a state in which a mold member which is separated into a plurality and is supported so as to be able to come into contact with and separate from each other is opened and separated Set the terminals on the opposing mold members. After that, when each mold member is moved and brought into close contact with each other, the flat plate portion of the terminal is clamped by the separation surface of the adjacent mold member, and the terminal is supported by penetrating the cavity,
Between the curved portions of the adjacent terminals, the curved portions are allowed to escape by being supported by a mold member provided with a bulged portion that gradually thickens along this shape.

In this state, the cavity is filled with resin to form a female connector in which the terminals are integrally joined. After that, when each mold member is moved and separated, it is separated from the mold part, and when the mold member arranged between the adjacent curved parts is pulled out, it is forcibly removed within the elastic limit of the curved part so that the female side The connector can be removed for insert molding.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. FIG. 1 shows a female-side connector insert molding apparatus. This mold 10 includes right and left mold members 11a and 11a.
b, the upper intermediate mold member 12 and the lower intermediate mold member 13 are separated into a plurality of parts and are in close contact with each other.
As shown in FIG. 3, a hollow rectangular parallelepiped cavity 14 is formed.

As shown in FIG. 2, the left and right mold members 11a and 11b are formed with protrusions 16 in the middle of opposite side surfaces of blocks 15 and 15 having a front trapezoidal shape, and one side of a cavity 14 is formed therein. A hollow part 17 is provided. Further, concave and convex grooves 18, 18 into which the flat plate portion 2 of the tulip-shaped terminal 1 is inserted are formed on the upper and lower side surfaces of the hollow portion 17 in the vertical direction. Further, locking protrusions 19 ... Are formed laterally at intervals on the upper portions of the side surfaces of the mold members 11a and 11b.

A plurality of tulip-shaped terminals 1 ... Are integrally formed on the carrier plate 21 with a space therebetween, and mounting holes 22 ... Are opened at predetermined intervals on the carrier plate 21, and the mounting holes 22 ... Engage with the locking projections 19 to hold the tulip-shaped terminal 1. In addition, a guide hole 24 is formed obliquely from the top surface to the bottom surface of the block 15 having a trapezoidal shape on the front surface, and convex ridge portions 25 are formed on the front surface and the back surface of the block 15, respectively.

As shown in FIG. 3, the lower intermediate mold member 13 has a plate-like shape with its lower end attached to the base 28, while its upper side is curved along the adjacent curved portions 3 and 3. The thickness gradually increases, and bulges 27 are formed vertically on both sides of the upper end along the flat plate portion 2 of the tulip-shaped terminals 1 adjacent to each other. Further, an inverted L-shaped guide groove 29 is provided on the upper surface of the base 28 along the front surface and the back surface of the mold members 11a and 11b, and the ridges of the mold members 11a and 11b are provided therein.
25 fits together and slides left and right.

Above the lower intermediate mold member 13, as shown in FIG.
A plate-shaped upper middle mold member 12 is provided as shown in
This is connected to the mounting plate 31 and is adapted to move up and down. Further, on both sides of this upper intermediate mold member 12, the mold member
Angular posts 32, 32 inserted into the guide holes 24 of 11a, 11b are inclined and projected. Further, an ejector pin 33 penetrating the base 28 is provided beside the lower intermediate mold member 13 protruding from the base 28 so as to be vertically movable.

A method of molding the female connector 9 with the above apparatus will be described. First, with the left and right mold members 11a and 11b open as shown in FIG. 1, a plurality of tulip-shaped terminals 1 ... Which are integrally connected by a carrier plate 21 as shown in FIG. In the inverted state, it is conveyed in front of the hollow portion 17 of the mold members 11a and 11b. Next, the mounting holes 22 of the carrier plate 21 are engaged with the locking projections 19
And the flat plate portion 2 is fitted in the groove 18 and set.

Next, as shown in FIG. 3, when the mounting plate 31 is lowered, the angular posts are slanted and mounted on the left and right.
When 32 and 32 are inserted into the guide holes 24 and 24 formed obliquely through the inside of the mold members 11a and 11b, and the angular posts 32 and 32 further descend inside the guide holes 24 and 24. The ridges 25 of the left and right mold members 11a and 11b are moved by being guided by the guide grooves 29, and the distance between them is narrowed. On the other hand, as the mounting plate 31 descends, the upper intermediate mold member 12 also descends, and the left and right mold members 11a and 11b come into contact with both side surfaces thereof and stop.

As a result, the bottom surface of the upper middle mold member 12 and
The hollow parts 17 and 17 of the left and right mold members 11a and 11b and the upper surface of the lower intermediate mold member 13 form a hollow rectangular parallelepiped cavity.
14 are formed. Further, the upper portions of the flat plate portions 2 and 2 of the tulip-shaped terminal 1 are sandwiched between both side surfaces of the upper intermediate mold member 12 and the concave grooves 18 and 18 of the left and right mold members 11a and 11b, and the flat plate portion 2 2 is the bulge 27 of the lower intermediate mold member 13.
The tulip-shaped terminal 1 is held between the two side surfaces of the mold and the concave grooves 18 of the left and right mold members 11a and 11b.
It is supported by penetrating 14. In this case, between the curved portions 3 and 3 of the tulip-shaped terminal 1, there is provided a bulging portion 27 that gradually thickens along this shape so as to allow the curved portions 3 and 3 to escape.

In this state, when the cavity 14 is filled with resin to form the mold portion 5, the tulip-shaped terminal 1
The female-side connector 9 is integrally formed by molding.
After that, when the mounting plate 31 is raised as shown in FIG. 4, the upper intermediate mold member 12 and the angular post mounted on the mounting plate 31 are raised.
32, 32 rises. When the angular post 32 rises, it comes out of the guide hole 24 into which it is inserted,
At the same time as the left and right mold members 11a and 11b move and open, the upper intermediate mold member 12 also rises and separates from the molded mold part 5.

When the mounting plate 31 is further raised, the upper intermediate mold member 12 is removed from between the flat plate portions 2 and 2 of the tulip-shaped terminals 1 and 1 adjacent to each other as shown in FIG.
11a and 11b spread and the mold part 5 comes out from the hollow parts 17 and 17, and the molded female connector 9 is supported only by the lower intermediate mold member 13. At this time, if the angular post 32 comes out of the guide hole 24, the mold member 11a,
11b stops. After this, the ejector pin 33 is attached to the base 28
When the mold part 5 is pushed up by penetrating through and bending upward, the curved parts 3 and 3 which sandwiched the bulging part 27 of the lower intermediate mold member 13 from both sides bend laterally within its elastic limit,
After being forcibly pulled out from the bulging portion 27 and removed, it returns to its original state by elasticity.

The present invention is not limited to the structure shown in FIG. 1, but the structure in which the molding apparatus is turned upside down and mounted, or the mold member 11 is used.
A structure in which a and 11b and the upper intermediate mold member 12 are arranged on the left and right sides may be used. Further, in the above embodiment, the left and right mold members 11a, 11
Although the structure in which b is moved by the angular posts 32, 32 is shown, a structure in which it is opened and closed by a cylinder may be used. In the above embodiment, the tulip-shaped terminals 1 ...
Although the case where the female connectors 9 are arranged in rows is shown, three or more rows of female connectors 9 arranged in parallel may be used.

FIG. 6 shows a female connector 9 using a cantilever type terminal 35 formed by another method of the present invention. In the case of molding this, according to the method of the present invention, a mold member having a bulge portion is arranged between the curved portions 3 and 3 of the adjacent cantilever type terminals 35, and the elastic limit of the curved portions 3 and 3 is arranged. By forcibly removing the bulging portion of the die member inside, a connector member integral with the mold portion 5a is molded, and then a separately molded frame-shaped mold portion 5b is fitted to manufacture the female-side connector 9. You can also

[0020]

As described above, according to the female connector insert molding method of the present invention, the mold member arranged between the curved portions of the adjacent terminals is formed so as to escape the curved portion of the terminal, After combining and supporting each mold member so that the terminal penetrates the cavity and filling the cavity with resin to form the mold part, the mold member placed between the curved parts of the terminal is When pulling out, insert molding is made possible by pulling out forcibly within the elastic limit of the curved part,
Workability can be significantly improved.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an insert molding apparatus in which a tulip-shaped terminal is set according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the left and right mold members of FIG.

FIG. 3 is a front sectional view showing a state in which a cavity of an insert molding apparatus in which tulip-shaped terminals are set is filled with resin.

FIG. 4 is a front cross-sectional view of the insert molding apparatus showing a state in which a female-side connector molded by separating the mold is removed.

FIG. 5 is a front cross-sectional view of the insert molding apparatus showing a state in which a lower intermediate mold member is forcibly removed from a curved portion of adjacent tulip-shaped terminals.

FIG. 6 is a sectional view of a female connector using a cantilever-type terminal according to another embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional tulip-shaped terminal.

FIG. 8 is a cross-sectional view showing a state in which the tulip-shaped terminal of FIG. 7 is inserted and attached to the rectangular tube portion of the mold portion.

FIG. 9 is a cross-sectional view of a female-side connector manufactured by a conventional method.

[Description of sign]

 1 Tulip-shaped terminal 2 Flat plate part 3 Curved part 4 Square tube part 5 Mold part 6 Square tube part 9 Female side connector 10 Mold 11a Mold member 11b Mold member 12 Upper middle mold member 13 Lower middle mold member 14 Cab Tee 15 Block 17 Hollow part 18 Recessed groove 19 Locking protrusion 21 Carrier plate 24 Guide hole 27 Bulging part 32 Angular post 33 Ejector pin 35 Cantilever type terminal

Claims (1)

[Claims] 1. A metal forming a cavity in a female connector insert molding method in which a plurality of tulip-shaped terminals or cantilever-shaped terminals each having a curved portion provided at a tip of a flat plate portion penetrating through a mold portion are attached in parallel. The mold is divided into a plurality of parts and supported so that they can be brought into contact with and separated from each other, and the flat plate part of the terminal is sandwiched between the separating surfaces of the respective mold members, and the mold member arranged between the curved parts of the adjacent terminals After the curved portion is formed to escape, the die members are combined and supported so that the terminal penetrates the cavity, and then the cavity is filled with resin to form the mold portion, and then each die member is formed. A female-side connector insert molding method, characterized in that, when the mold member disposed between the curved portions of the terminal is separated and the mold member is pulled out, it is forcibly pulled out within the elastic limit of the curved portion.