JP3147753B2 - Mold and method for manufacturing resin molded assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing die and a manufacturing method for manufacturing a resin molded assembly which is assembled by engaging a plurality of resin molded products with each other.

[0002]

2. Description of the Related Art For example, when it is intended to manufacture a resin molded assembly in which a plurality of resin molded articles are engaged with each other and assembled, each resin molded article is molded by an individual resin molding machine, and each molded article is formed. The resin molded products are collected at one place and assembled.
Such assembly is performed by an automatic machine having a parts feeder or manually.

[0003]

When a resin molded assembly is manufactured by the above-described conventional method, there are the following problems. Since resin molding and assembling are performed separately, a transport process for transporting to the assembly location, whether using an automatic machine or manually, and an assembly process at that location are required. Processes are required, and these processes are reflected in product costs. In addition, it is necessary to manage a mold for each resin molded product, which is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a manufacturing die and a manufacturing method for a resin molded assembly capable of accurately and inexpensively manufacturing the resin molded assembly.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a housing and a housing,
U shaped cross-section
Mold to manufacture resin molded assemblies composed of
There is a set of a movable type and a fixed type,
The dynamic mold is a slidable housing mold,
The mold is filled with molten resin.
And fix the resin between the fixed mold and the movable mold.
And the fixed mold and the movable mold are closed.
While still in place, slide the housing mold outward.
The retainer and the housing
A space can be formed between the retainer components.
After the space is formed, the housing is
Slide inward and hold it in this retainer mold
Open the retainer in the U-shape.
A structure that can be engaged by pressing against the housing from the mouth side.
There is it. The invention according to claim 2 provides a housing
And a cross-section engaged with the housing
A resin molded assembly consisting of a U-shaped retainer
Manufacturing method, fixed type, each slide
Possible housing mold and retainer mold
Using a moving mold, the fixed mold and the movable mold are closed and the mold is closed.
Is filled with molten resin, and the resin is
After solidifying between the moving mold and the fixed mold
With the movable mold closed, first,
Slide the metal mold to the outside so that the retainer and the
A space is formed between the housing and the
Slide the retainer mold inward with the housing
And hold it in this retainer mold.
The retainer from the opening side in the U-shape.
It is configured to be pressed against and engaged with the housing.

[0006]

According to the first and second aspects of the present invention, the first and second aspects have been described.
In the present invention, when molding a plurality of resin molded products in one mold, the mold is moved between one resin molded product and another resin molded product to form a space. That is, the surface facing the counterpart resin molded product is formed by the mold before the space is formed by the movement of the mold, and the space is formed by moving the mold. Thereafter, the other resin molded product is moved in the same space while holding one resin molded product, and the two are pressed against each other so as to engage with each other to perform assembly.

Here, when the mold is moved to form a space, the fixed mold and the movable mold as the main body are being clamped. Therefore, even if a space is formed between the relatively moved resin molded products, the periphery is not completely a space, and it becomes easy to hold the resin molded product from around during the assembly operation. Also, depending on the shape of the resin molded product, it may be necessary to open another die before opening another die. Even in such a case, the resin molded products are moved and assembled before opening the mold after moving the punching plate.

[0008]

As described above, according to the present invention, a resin is formed in a mold, and then the mold is moved to form a space between the resin mold and a pair of resin molded products. Since the molded products are engaged with each other, the assembly is also performed in the mold, and the resin molding and the assembly process can be performed simultaneously by one machine, and the production of the resin molded assembly having the following effects is achieved. Mold and manufacturing method can be provided. The transport step is not required. Compared with the case where an automatic machine is used, there is no need to supply parts using a parts feeder, and the time for the assembly process can be reduced. Compared to the case of manual assembling, it is automated and greatly shortens the time, and a separate inspection process for manual is not required. Since an individual automatic machine is not required, the work space can be reduced, and the cost for introducing the automatic machine can be reduced. As a result, a resin molded assembly can be manufactured at low cost.

Also, since the space is formed by moving the mold during the clamping of the fixed mold and the movable mold, it is easy to hold the resin molded product and it is possible to prevent the resin molded product from dropping. Even in the case of a simple resin molded product, it can be easily assembled.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are perspective views showing a mold and a method for manufacturing a resin molded assembly according to an embodiment of the present invention. In FIG. 1, the resin molded assembly (connector) 10 includes a rectangular box-shaped housing 20 and retainers 30a and 30b each having a U-shaped cross section that are engaged with and mounted on the upper and lower surfaces of the housing 20. Have been. The housing 20 is formed in two rows of upper and lower rows of cylindrical terminal fitting receiving chambers 21 penetrating in the front-rear direction. The upper row is formed on both the left and right sides, and the center is flexible in the vertical direction. A lock arm 22 having a property is provided. The rear end portion of the housing 20 from the middle in the front-rear direction is slightly smaller in outer shape than the front end, and each terminal fitting receiving chamber 21 faces upward and downward near the front end of the thinned portion. Opening 21a is formed.

Since the retainers 30a and 30b having a U-shaped cross section are mounted on the narrowed portion from the upper surface side and the lower surface side, both sides correspond to the upper surface side and the lower surface side. A total of four ridge-shaped guide rails 24 are formed. The guide rail 24 is formed obliquely so that it goes to the middle in the vertical direction toward the front end on the side surface. The cross-section of the guide rail 24 has a wedge shape having an obliquely inclined surface facing upward and a lower surface side having an obliquely inclined surface facing downward.

A small projection 25 is formed in front of the guide rail 24 on the extension thereof.
A ridge 26 is formed further inward than the small projections 4 and the small projections 25 and is parallel to these inclinations and projects to the same width as the front end portion. Jetty 2 for the upper surface formed diagonally to each other
6 and the jetty 26 for the lower surface side are connected at the front, forming a V-shape. The retainers 30a and 30b are formed generally symmetrically as a whole, and when the U-shaped openings approach each other toward the housing 20 side, the two wing portions 31 and 31 sandwich the thinned portion of the housing 20 from both sides. It has become. A guide groove 32 is formed in the wing portion 31 at the same inclination as that of the guide rail 24 and the small protrusion 25 as a width in which the guide rail 24 and the small protrusion 25 can be inserted. The lower end of the wing portion 31 is formed obliquely along the V-shaped jetty 26.

Here, the retainers 30a and 30b are formed to be shorter than the thinned portion of the housing 20. Therefore, when the retainers 30a and 30b are mounted so as to sandwich the housing 20 from the upper surface side and the lower surface side, the guide rail 24 can enter the guide groove 32 and slide back and forth, and both are formed obliquely. Therefore, the retainers 30a and 30b move toward and away from the housing 20 while moving back and forth. At the front end of the movement range, the small projection 25 enters the guide groove 32.

The retainer 30a on the upper surface side and the retainer 30b on the lower surface side each have two or four projections 33 which can enter the opening 21a at positions facing the opening 21a on the inner surface facing the housing 20 respectively. Have. The protrusion 33 is formed in a wedge shape that protrudes toward the front so as to be locked to a terminal fitting (not shown) inside when entering the terminal fitting accommodating chamber 21 to prevent the protrusion from coming off. As described above, the retainers 30a and 30b are slidable back and forth, and when approaching the housing 20 at the front position, the protrusion 33 enters the terminal fitting accommodating chamber 21 via the opening 21a. . If the terminal fitting is in the half-inserted state, the projection 33 comes into contact with the end face of the terminal fitting and moves to the regular insertion position. Also, wing 3
Notches 34, 34 are formed at the roots of the wings 31, 31 so that the roots of the wings 31, 31 are easily bent.

FIGS. 3 and 4 show such retainers 30a and 30a.
The state of double locking by 0b is shown in a sectional view.
A resin lance 27 integrally formed is formed on the bottom surface of each terminal fitting accommodating chamber 21 in the housing 20, and when the female terminal fitting 40 is inserted, a protrusion 27a formed on the upper surface of the resin lance 27 is formed. It enters into a not-shown locking hole formed in the bottom surface of the metal fitting 40 and is locked (primary locking). At this time, the retainers 30 a and 30 b are located at the rear ends in the movement range, and the projection 33 does not enter the terminal fitting accommodating chamber 21.

Next, when the retainers 30a and 30b are moved to the front ends, the projections 33 approach the housing 20 and the projections 33 are opened.
It enters the terminal fitting accommodating chamber 21 through 1a and is locked to the female terminal fitting 40 (secondary locking). The retainer 30
When a and 30b are at the rear end position, it is called a temporary lock state,
When it is at the front end position, it is called a fully locked state. On the other hand, FIG. 5 shows a state in which the movable mold among the molds for manufacturing the resin molded assembly 10 is viewed from the front so that the movement of the slide mold is easily understood. The movable mold 100 shown in the figure and the fixed mold 200 located on the near side on the paper form a pair,
As shown in the figure, the movable mold 100 includes housing molds (slide pins) 110, 110 which can slide left and right and can mold the housing 20 on the inner surface side, and upper and lower portions of the housing molds 110, 110. Retainer mold that slides up and down (assembly slide pin)
120, 120.

FIG. 6 shows a movable mold 100 during mold clamping.
And each state of the fixed mold 200 is shown in a cross section by changing the direction. In order to easily understand the relationship between the horizontal direction and the vertical direction, they are shown from three directions as shown in three views. That is, FIG. 6B shows a cross section in the vertical direction and FIG. 6C shows a cross section in the horizontal direction with respect to the cross section along the axial direction in FIG. The fixed mold 200 includes a mounting plate 210,
The template 220 and the punching plate 230 are configured to overlap each other, so that the mounting plate 210 and the punching plate 230 can be integrally separated from the template 220 and slidable.
The core pins 211 and the sliding pins 212 fixed to the mounting plate 210 penetrate the template 220 and are inserted into the molding space of the resin molded assembly 10. Further, first cam pins 213 and 213 and second cam pins 214 and 214 for driving the housing forming dies 110 and 110 and the retainer forming dies 120 and 120 are fixed to the mounting plate 210. Cam holes 111, 11 formed in the housing forming dies 110, 110 and the retainer forming dies 120, 120 through the mold plate 220.
1 and the cam holes 121, 121. The tips of the first cam pin 213 and the second cam pin 214 are bent, and the cam holes 111 and 121 slide in a predetermined direction when the tip bent portions of the first cam pin 213 and the second cam pin 214 pass. It has a possible shape. As shown in FIG. 6, the first cam pin 2
13, 213 and the second cam pins 214, 214 are straight portions in the cam holes 111, 111 and the cam holes 121, 121.
Penetrates. Then, the first cam pins 213 and 213
Of the second cam pins 214, 214 are bent outward.
Is bent inward.

The movable mold 100 includes a mounting plate 130,
The template 140 and the projecting plate 150 are overlapped with each other, and the template 140 and the mounting plate 130 are fixed so as to be relatively immovable, and the projecting plate 150 is slidably held therebetween. The protruding plate 150 holds a protruding pin (not shown), and is used when the molded resin molded product is removed from the mold. Next, a method of manufacturing the resin molded assembly 10 having the above configuration using the mold having the above configuration will be described.

Initially, in the movable mold 100, the housing molds 110, 110 are in close contact with each other, and the retainer molds 120, 120 on both sides thereof are waiting at a position where a retainer space is formed. The fixed mold 200 is in close contact with the front surface of the movable mold 100, and the core pin 211 and the sliding pin 212 are connected to the terminal fitting accommodating chamber 21.
And projecting from the inner surface of the retainers 30a and 30b. When the mold is filled with the molten resin, the resin is solidified between the fixed mold 200 and the movable mold 100. After solidification, the template 2 of the fixed mold 200 and the movable mold 100
The fixed mold 200 is opened without opening the molds 20 and 140.
Starts to separate the mounting plate 210 and the leading plate 230 from the template 220.

When the mounting plate 210 begins to separate from the template 220, first, the core pin 211 and the sliding pin 212 come out of the terminal fitting chamber 21 and the inner surfaces of the retainers 30a and 30b. The sliding pin 212 is attached to the retainer 30a,
30b, the retainer 3
A space is formed in the inner part of Oa and 30b. At the same time, the first cam pins 213 and 213 and the second cam pins 21
4 and 214 also slide, but the second cam pins 214 and 2
As for 14, the straight portions are the retainer molds 120, 12.
It only slides in the cam holes 121 formed in 0, and the retainer molds 120 do not move. However, regarding the first cam pins 213 and 213,
The bent part bent outside the tip is the housing mold 11.
Passing through the cam holes 111, 111 formed at 0, 110,
The two housing molds 110 are slid outward. This state is shown in FIG. 7 and FIG. When the housing molds 110 slide outward, a space is formed between the retainers 30a, 30b and the housing 20, as shown in FIG.

Thereafter, the mounting plate 210 is further moved to the template 220.
Away from the end of the second cam pins 214, 214, the bent portions are bent outward from the tips of the second cam pins 214, 214.
Then, both retainer forming dies 120 and 120 are slid into the inside of the housing 20 through the cam holes 121 and 121 formed in the housing 20. Here, each retainer 30
a, 30b are held by the retainer molds 120, 120 while the housing 20
Are pressed against the upper surface and the lower surface. When the left and right wing portions 31, 31 of the respective retainers 30a, 30b approach each other so as to sandwich the thinned portion of the housing 20, the end surface of the wing portion 31 comes into contact with the guide rail 24. As described above, the wing portion 31 rides over the guide rail 24 by the wedge-shaped cross-sectional shape,
When the guide rail 24 is inserted into the guide groove 32 of the wing portion 31, it engages. Thereby, the retainers 30a and 30b engage with the housing 20, and the assembly is completed. This state is shown in FIG. 9 and FIG.

When the retainers 30a, 30b are held by the retainer molds 120, 120 and pressed against the upper and lower surfaces of the housing 20, the fixed mold 200 and the movable mold 1 are moved.
00 is in a mold-clamped state, so that the retainers 30a, 30 do not fall out of the retainer molds 120, 120 and fall. Thereafter, the fixed mold 200 and the movable mold 10
0 and the protrusion 15 of the movable mold 100 is opened.
When the “0” is slid, the housing 20 is removed from the movable mold 100 with the retainers 30a and 30b assembled.

As described above, the movable mold 100 composed of the slidable housing molds 110 and 110 and the retainer molds 120 and 120, and the fixed mold 200 paired with the movable mold 100.
The housing 20 and the retainers 30a, 30b are simultaneously resin-molded, and the mounting plate 210 and the punching plate 230 are moved so as to be separated from the mold plate 220 on the side of the fixed mold 200 during mold clamping. The housing 20 is formed while holding the retainers 30a, 30b with the retainer molds 120, 120 from both left and right sides while forming a space between the retainer 30 and the retainers 30a, 30b.
, The housing 20 and the retainers 30a, 30b are assembled. Since it is performed during mold clamping, there is no possibility that the retainers 30a and 30b may be dropped when moving.

In the above-described embodiment, the housing mold 110 and the retainer mold 120 are mechanically connected to each other with the movement of the cam pins. Can also be performed. Further, the formation of the space between the resin molded products can be performed not only by the linear movement of the mold opening and the slide pin but also by two-dimensional or three-dimensional driving. Further, the fixed mold 200 and the movable mold 100
In either case, either side may move to open the mold, or both may move at the same time.

Further, in the above-described embodiment, two sets of cam pins 213 and 214 are used on the side of the fixed mold 200. However, FIGS. An embodiment having third cam pins 131, 131 for moving the retainer molds 120, 120 on the side of the movable mold 100 instead of the 214 is shown. The third cam pins 131 are fixed to a first protruding plate 150a of the fixed die 100,
Through the cam holes 121, 121 of the retainer molds 120, 120. This state is shown in FIG.
Shown in

Next, on the side of the fixed mold 200, the mounting plate 210 and the leading plate 230 are separated from the mold plate 220, and the housing molds 110, 110 are opened right and left.
This state is shown in FIG. And the fixed mold 200
Before the mold and the movable mold 100 are opened, the first protrusion 1
50a is protruded, and the retainer forming dies 120, 120 are moved by the third cam pins 131, 131. This state is shown in FIG. As a result, the connector 10 can be assembled in the same manner as in the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a resin molded assembly assembled by a mold and a method for manufacturing a resin molded assembly according to an embodiment of the present invention.

FIG. 2 is a perspective view of the resin molded assembly in an assembled state.

FIG. 3 is a cross-sectional view of the resin molded assembly showing a temporarily locked state of the retainer.

FIG. 4 is a cross-sectional view of the resin molded assembly showing a state where the retainer is fully locked.

FIG. 5 is a schematic front view of the movable mold immediately after resin filling.

FIG. 6 is a diagram showing an internal state immediately after filling of a production mold with resin.

FIG. 7 is a schematic front view of the movable mold during assembly.

FIG. 8 is a diagram showing an internal state during the assembly of the manufacturing mold.

FIG. 9 is a schematic front view at the time of completion of assembly of the movable mold.

FIG. 10 is a diagram showing an internal state at the time of completion of assembly of a manufacturing die.

FIG. 11 is a view showing an internal state immediately after resin filling of a production mold according to a modification.

FIG. 12 is a diagram showing an internal state of the manufacturing mold during assembly.

FIG. 13 is a diagram showing an internal state at the time of completion of assembly of the manufacturing mold.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 movable die 110 housing molding die 111 cam hole 120 retainer die 121 cam hole 130 mounting plate 131 third cam pin 140 die plate 150 projecting plate 200 fixed die 210 mounting plate 211 core pin 212: sliding pin 213: first cam pin 214: second cam pin 10: resin molded assembly 20: housing 30a, 30b: retainer

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-110918 (JP, A) JP-A-62-227614 (JP, A) JP-A-63-216718 (JP, A) 200781 (JP, A) JP-A-8-323795 (JP, A) JP-A-8-323796 (JP, A) JP-A-8-336840 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 33/00-33/76 B29C 45/00-45/84 B29C 65/56-65/80 B29C 39/00-39/36 B29C 69/00-69/02 H01R 43/00, 43/18

Claims (2)

(57) [Claims] 1. A housing and a housing,
Consists of a U-shaped retainer to be engaged
A mold for manufacturing a resin molded assembly to be manufactured, wherein a movable mold and a fixed mold are paired, and the movable molds are respectively slidable housing molds.
A mold and a retainer molding die are provided, while a mold is filled with a molten resin, and the resin is mixed with the fixed mold.
After being solidified between the movable mold and the fixed
With the mold and the movable mold closed, the housing mold is slid outwardly.
To form a space between the retainer and the housing.
And the retainer mold has a
After being formed, slide the housing inward
Before being held by this retainer mold
Place the retainer on the housing from the opening side of the U-shape.
A mold for manufacturing a resin molded assembly , which can be engaged by being pressed against a ring . 2. A housing and a housing.
Consists of a U-shaped retainer to be engaged
A method for manufacturing a resin molded assembly, comprising: a fixed mold; and a housing mold, each of which is slidable.
And a movable mold having a retainer forming mold, and closing the fixed mold and the movable mold to melt the molten resin in the mold.
Fill the same resin between the fixed mold and the movable mold
After the solidification and the fixed mold and the movable mold
With the housing closed, first slide the housing mold outward to
Form a space between the retainer and the housing
After that, the retainer mold is closed by the housing.
To the inside of the retainer mold.
Hold the retainer in the held state in a U-shape.
A method for manufacturing a resin molded assembly, wherein the resin molded assembly is pressed into engagement with the housing from an opening side .