JP2535677B2 - Manufacturing method of elastomer inter-connector with support - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to a liquid crystal display,
Rector luminescence, light emitting diode, electro
Table for chromic display, plasma display, etc.
The connection terminal of the body and the circuit board that mounts the drive part
Useful for connecting between or between various electric circuit boards,
-Out with support elastomer interconnector (below,
And a connector).

[0002]

2. Description of the Related Art Conventionally , when manufacturing the above connector,
Support raw material such as unvulcanized silicone rubber is divided is put at a predetermined thickness on a polyester film or the like after kneading,
The upper and lower surfaces of an S-type elastomer sheet, which is formed by alternately layering unvulcanized conductive elastomer and unvulcanized insulating elastomer, are sandwiched to form a support material and an S-type elastic sheet.
And vulcanizing the Sutoma sheet, and both the adhesive was performed simultaneously in the mold.

[0003]

However, in such a method, since the raw material of the support material is unvulcanized, the raw material easily flows after the dispensing , before and after the sandwiching work of the S-type elastomer sheet, and during the bonding work, resulting in uneven thickness. This has been an obstacle to automating equipment. Further, the vulcanization in a closed mold, support member flows by pressure and heat, to extend the center of the S-type elastomer sheet extends skew failure (Skew = polarized after molding, as a result of this, the conductive elastomer and an insulating The elastic elastomer was fixed while being twisted ), causing distortion, which was the cause of the complaint.
(When mounted using such a connector, the electrodes on the board were not connected properly, and the electrodes were sometimes connected incorrectly. )

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a connector which can solve the above-mentioned conventional problems, and which comprises a vulcanized rubber plate on the surface of a film. the support member is provided, the surface of the support material is provided an adhesive layer by screen printing, the S-type elastomer sheet of conductive elastomer and insulating elastomer formed by laminating alternately, the two kinds of elastomers are exposed Both surfaces are sandwiched by the support material via the adhesive layer to form a connector original plate, which is decompressed by decompressing it in a decompression box and then heat-molded by a floating mold to form the support material and S-shape. the elastomeric sheet is bonded, then Ru relates to a method of manufacturing a connector, wherein the peeling only the film from the support material.

The present invention will be described below with reference to an embodiment shown in the drawings. In the present invention, first, a support composed of a rubber plate 2 made of vulcanized silicone or the like is formed on a film 1 made of polyester or the like shown in FIG. 1 (a). This material is provided at regular intervals
After the adhesive layer 3 is provided on the surface of the sheet material by screen printing, the film is cut off and two sheets are selected to form a pair of support materials with films 4 and 5. For the adhesive layer 3 screen-printed on the rubber plate 2, a silicone addition type is suitable when the rubber plate 2 is a silicone rubber plate, but in general, a condensation type RTV, a silicone adhesive varnish, an acrylic adhesive is used. Use agents. Examples of the application of the adhesive include roll coating, spraying, brush coating, and the like. From the viewpoint of uniformity or accuracy, screen printing is most suitable, and the thickness is preferably 20 to 40 μm. Support <br/> port member provided with the adhesive layer is cut away of two front and rear (4, 5) as a pair
It is .

Next, the film is omitted in FIG. 1 (b).
As described above, the support material 4 is inverted by an inverting device (not shown), and the conductive material and the insulating elastomer are alternately and multiply multiplexed between the support material 5 and the support material 5 placed therebelow so that their joint surfaces are parallel to each other. The S-type elastomer sheet 6 thus laminated is sandwiched on both surfaces of the S-type elastomer sheet 6 on which the above-mentioned two types of elastomers are exposed, with the adhesive layers of the support materials 4 and 5 interposed therebetween to form the connector original plate 8. The S-type elastomer sheet 6 is supplied by a supply device (not shown).

[0007] Next, as shown in FIG. 1 (c), to remove air bubbles contained therein in vacuum box 7. This and
Can, when bonded immediately heated molded to a support material and an S-type elastomer sheet this connector original plate 8, since a poor adhesion to the bubbles remaining in the clamping face, FIG. 2
A defoaming process is performed by placing the table on the table 9 in the decompression box 7 shown in (a) and (b). In this case, it is necessary to keep the inside of the decompression box 7 at 0.1 Torr or less and continue to apply a constant load through the foam sponge sheet. A load plate 10 Therefore the weight applied to the connector plate precursor 8 was <br/> adjusted to 10 g / cm ^2, in order to increase the defoaming vacuum effect 5
By placing the foam sponge sheet 11 having a thickness of 10 mm and exhausting it through the exhaust port 12, the treatment can be performed without causing uneven elongation or distortion regardless of the thickness of the original connector plate 8. The foam sponge sheet 11 is shown in FIG.
As shown in FIG. 2 (b), it is in a state of being suspended when no pressure is applied , and as the load plate 10 descends , the state shown in FIG.
As shown, the connector original plate 8 gradually comes into contact with the side edge portion from the central portion. Therefore, bubbles that may remain at the interface between the S-type elastomer sheet 6 and the support members 4 and 5 are extruded from the sandwiching surface.

The next step is 100 to 1 in advance.
In a hot plate heated to 10 ° COf each support material 4, 5adhesive
Layers 3 and 3 and S type elastomer sheet6 andGlue. This
The weight of the hot plate at the time of is 10 g / cm² Adjusted to
ing. Therefore, the floating mold 13 shown in FIG.
It is better to use ThisIn the floating mold 13
Is,On the table 14 which also serves as the lower mold for the connector original plate 8
Place it on the cylinder, and fix the cylinder 15 such as an air cylinder.
Upper mold of floating mold 13 suspended on ton 16
13 ', and the upper die weight and cylinder
Press pressure is 10g / cm due to the difference in orientation adjustment force² below
Set the cylinder pressure to a specified value and fix the cylinder pressure. F
The upper mold 13 'of the rotating mold 13 is the connector
If the plate 8 expands, it rises with the expansion force, and conversely
When the original plate 8 contracts, the upper die 13 'moves down. This
Here, reference numerals 17 and 18 respectively indicate a compartment (pressurized type).
And a compartment (reduced pressure type). ThisFloating mold 1
3 isI)The hot plate is the connector original plate from the beginning to the end of heating
Is in close contact with,B)Against the extension force of the connector plate
Upper mold 13 'is addedAs requiredHowever, the load or holding force is constant
Has been adjusted to, TwoThe above-mentioned holding power
Adjusts the die's own weight and floats due to expansion force or material drag.
It may be a moving one, such as a spring, air cylinder, hydraulic
Even as a floating type that uses a linder to offset the mold's own weight
Good.Finally, S type adhered via the adhesive layers 8 and 8
Film from elastomer sheet 6 and support materials 4 and 5
Only peel off the inventionIs the targetconnectorButProfitBe
You.

[0009]

Example: A support material made of a vulcanized silicone rubber plate is provided on the surface of a polyester film at regular intervals.
On the surface of this support material , KE of addition reaction type RTV
1800 TA. TB (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.), an adhesive having a viscosity of 600P to 1200P is meshed.
A semi-automatic screen printer using a ^# 150 screen, Minomat 600-W (trade name, manufactured by Mino Group Co., Ltd.) is applied over the entire surface to a constant thickness of 10 to 30 μm to form an adhesive layer.

After this , first , the first support material 4 is cut together with the polyester film and inverted by an inverting device to arrange the adhesive layer downward . Next, the adhesive layer of the second support material 5 has a thickness of 30 μm and a width of 30 c.
1 mm thick S-type elastomer sheet 6 obtained by cutting in a plane parallel to the stacking direction from a cube formed by alternately stacking a conductive elastomer sheet having a depth of 30 cm and an insulating elastomer sheet having the same shape , laminated surface of the conductive Heras <br/> Tomah over the insulating elastomer is placed so as to be perpendicular to the adhesive layer, and then the support member 4 which had been previously inverted in S-type elastomer sheet 6 Cover
A connector original plate 8 in which an S-type elastomer sheet is sandwiched between support materials is obtained. At this time the holding of the first sheet of stages Tsu mounting support member 4 on the side covering, using a low friction air cylinder. This is a mechanism for absorbing a force when a force of 10 kgf is applied.

Next, in the closed vacuum box 7,
A vacuum pump was used to remove air bubbles between the support material of the connector original plate 8, the S-type elastomer sheet and the adhesive layer, and suction was continued for 70 seconds at 0.1 Torr or less. At the same time, in order to apply a uniform load in the decompression box, a weight-adjusted load plate 10 and a 5 mm foam sponge sheet 11 are interposed between them to apply a load, and an S-type elastomer sheet and a support material with an adhesive layer interposed therebetween. I tried to close contact with.

Next, the closely attached connector original plate 8 is placed on a table 14 which also serves as a lower heating mold, and the weight thereof is adjusted in advance and the floating mold 1 is heated to 110 ° C.
The upper die 13 'of No. 3 was pressed to cure the adhesive layer, and the support material and the S-type elastomer sheet were bonded and integrated. At this time, the load was adjusted to 10 g / cm ² . Then, the polyester film attached to the support material was removed to produce the connector of the present invention. This product had no skew in the S-type elastomer sheet layer.

[0013]

INDUSTRIAL APPLICABILITY According to the present invention, a vulcanized rubber plate is used.
By providing a support material on the surface of the film,
Application of adhesive, sandwiching S type elastomer sheet,
In addition to providing a series of operations such as bonding in the mold,
The S-type elastomer sheet to be sandwiched should be vulcanized
Since it has been adopted, the unvulcanized support material raw material is sandwiched
Or flow during the bonding work in the mold, resulting in uneven thickness,
An excellent connector can be obtained without causing uneven expansion of the S-type elastomer sheet due to pressure and heat in the mold to generate distortion and adhesion failure due to defective defoaming .

[Brief description of drawings]

[Figure 1]The outline of the method for producing the connector of the present invention is step-by-step.
Shown in the figure(A) Support on long film
With the material and adhesive layer placed,Figure(B) is support
Invert the material and place the adhesive layers facing each other,Figure
(C) defoams in a vacuum boxShiThe state, Each
FIG.

[2] an explanatory view showing a detail of FIG. 1 (c), a state diagram (a) is that the defoaming treatment under pressure, Figure (b) states that are stuck in a non-pressure time, Shown respectively.

FIG. 3 is an explanatory view of a floating mold used in the method of the present invention.

[Explanation of symbols]

1 Film 10 Load Plate 2 Rubber Plate 11 Foam Sponge Sheet 3 Adhesive Layer 12 Exhaust Port 4 First Support Material 13 Floating Mold 5 Second Support Material 13 'Upper Mold 6 S-type Elastomer Sheet 14 Table 7 Decompression box 15 Air cylinder 8 Connector original plate 16 Piston 9 Table in decompression box 17 Branch chamber (pressurized type) 18 Branch chamber (depressurized type)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 2-195671 (JP, A) Japanese Patent Laid-Open No. 2-129383 (JP, A) Japanese Utility Model Laid-Open No. 2-22578 (JP, U)

Claims (2)

(57) [Claims] 1. A support material made of a vulcanized rubber plate is provided on the surface of a film, an adhesive layer is provided on the surface of the support material by screen printing, and a conductive elastomer and an insulating elastomer are alternately laminated. Both surfaces of the S-type elastomer sheet formed of the above-mentioned two kinds of elastomers are sandwiched between the support materials via the adhesive layer to form a connector original plate, which is decompressed in a decompression box. After degassing, heat-mold with a floating mold to bond the support material and S-type elastomer sheet,
Then, the method of <br/> manufacturing support with elastomer interconnector, characterized in that peeling off only the film from the support material. 2. The method for producing an elastomer interconnector with a support according to claim 1, wherein the support material provided on the surface of the film is cut together with the film, and then the S-type elastomer sheet is sandwiched.