JPH0251834B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] A sealing tape that covers a dome-shaped disc-shaped spring in a push-button switch housing the disc-shaped spring, that is, a sealing tape formed by adhering a cover material facing the disc-shaped spring to a sealing material. The aim is to streamline the work of supplying and pasting the push button switch, shorten the assembly time of the push button switch, and reduce the manufacturing cost.

[Industrial application field]

The present invention relates to a method for separating a connecting seal tape, and more particularly to an improved method for separating (supplying) a seal tape incorporated into a push button switch containing a dome-shaped dish-shaped spring and applying it to a container containing a dish-shaped spring.

A push button switch houses a dome-shaped dish-shaped spring and utilizes the fact that the unevenness of the dish-shaped spring is reversed when the push button is pressed. ,
The operator receives feedback that the pushbutton switch has been activated.

A keyboard configured using such push button switches can reduce keystroke errors and improve keystroke speed. In addition, the structure is relatively simple,
It has the advantage that it is easy to automate the work of incorporating it into a keyboard, so it is widely used in various keyboards.

FIG. 4 is a side view showing the structure of a push button switch that accommodates a disc-shaped spring.

In FIG. 4, the push button switch is composed of an operating section 2 mounted on a panel 1 and a switch element section 4 mounted on a printed circuit board 3, and the operating section 2 includes a slider 2 formed by molding plastic.
1, and a housing 22 that slidably encloses the slider 21 in the vertical direction.

The switch element section 4 includes a terminal plate 41 made of plastic, lead terminals 42 and 43 insert-molded in the terminal plate 41, and a dome-shaped dish-shaped spring 44 mounted downwardly in a recess 41a of the terminal plate 41.
and seal tape 4 attached to the top surface of the terminal board 41.
5, and an actuator 46 whose one end is fixed to the upper surface of the terminal plate 41 by heat caulking or the like.

The seal tape 45 consists of a cover 51 that is smaller than the recess 41a and a seal 61 that is larger than the recess 41a and has an adhesive applied to its lower surface. The electrode 43a formed at the tip of the lead terminal 43 is exposed at the center of the bottom of the recess 41a.

When assembling the switch element section 4 configured in this way, a seal tape 45 with adhesive applied to the lower surface of the thin, lightweight and visible seal 61 is used.
is more difficult to handle than the disc spring 44 and the actuator 46.

[Conventional technology]

FIG. 5 is a perspective view for explaining a conventional sealing tape manufacturing method.

In FIG. 5, the cover 51 is cut out from the first insulating film 5 using a cutter 71, and then
It is adsorbed onto the vacuum chuck 72, transported onto the second insulating film 6, and affixed at a predetermined position.

The arrangement pitch of the cover 51 attached to the insulating film 6 matches the length of the seal 61, and the width of the insulating film 6 is cut in advance to match the width of the seal 61. Therefore, the insulating film 6 is cut using the cutter 73 to match the length of the seal 61, and the seal tape 45 is completed.

The assembly device of the switch element section 4 has the manufacturing mechanism for the sealing tape 45 built-in, and each completed sealing tape 45 is attached to a rotatable clamp 74.
The terminal board 41 is moved while being held therebetween, and is attached to the upper surface of the terminal board 41.

[Problem that the invention seeks to solve]

Conventional sealing tapes are manufactured one by one in accordance with the assembly speed of the switch element portion and supplied to the terminal board, and the mechanism for this purpose has been designed to be high-speed.

However, the mechanism involved in the series of steps required to manufacture and supply the sealing tape requires components that are driven intermittently and reciprocated.
As a result, the sealing tape supply speed is slower than the terminal board supply speed, and when the sealing tape supply speed is further increased using conventional equipment, problems often arise in which the relative positional relationship between the seal and the cover is misaligned. Then, there was a problem in that the relative positional relationship between the terminal board and the sealing tape often shifted.

As a means to solve the above-mentioned problems related to the manufacture of seal tapes, the applicant connected and formed a large number of seal tapes as of January 16, 1988.
“Sealing tape manufacturing method (Patent application 1986-006759)
The present application relates to a method for individually separating sealing tape from the connection formation for supply to an assembly line of switch element parts.

FIG. 6 is a side view (a) and a plan view (b) of a connected sealing tape produced by the above sealing tape manufacturing method,
An adhesive (adhesive layer) 62 is provided on one side of the seal 61, which is composed of a cover (covering material) 51 formed from a first insulating film 5 and a seal (sealing material) 61 formed from a second insulating film. is covered with a cover 51 except for the peripheral edge part, and when manufacturing the seal tape 45, a cutting line 53 is inserted only in the first insulating film 5 which has been joined to the second insulating film in advance, At least a cover 51 is formed that is connected to the surroundings by an insulating film, and then a cutting line is made only in the second insulating film, and a seal 61 is formed that is connected to the surroundings by the first insulating film 5. The second insulating film except for the seal 61 is then peeled off from the first insulating film 5 and removed.

The first insulating film 5 is made of adhesive 62.
A release agent is applied to prevent the metal from adhering completely, but since the seal tape 45 is incorporated into the push button switch, the release agent is non-silicon-based, that is, it is harmless to the electrical contacts. A non-silicon mold release agent is used, which has inferior mold release properties than a silicone mold release agent.

[Means for solving the problem] Figure 1 A, B, and C, in which the same reference numerals are used for parts common to those in the previous figure, are diagrams showing the basic steps of the present invention, and are aimed at eliminating the above problem. The present invention consists of a cover 51 cut out from a first insulating film 5 and a seal 61 cut out from a second insulating film, and an adhesive 6 applied to one side of the seal 61.
When separating a plurality of seal tapes 45 covered with a cover 51 except for the peripheral edge of the second insulating film 5 from a connected state formed by connecting the first insulating film 5 with a cutting line 53 for cutting out the cover, In the first peeling step, the adhesive 62 on at least one side of the seal 61 is peeled off from the first insulating film 5, and then the first insulating film 5 is peeled off along the guide path.
In the second peeling step, the entire surrounding area of the adhesive 62 is peeled off from the first insulating film 5, and the cover 51 is pressed against the seal tape holding part of the seal tape carrier through the seal 61. Further, the first and second peeling steps run the first insulating film 5 at an acute angle, and the first peeling step removes a portion of the seal 61 from the first insulating film 5 through the cover 51. The second peeling process removes the first insulating film 5.
This method of separating a seal tape is characterized in that the guide path guides the first insulating film 5 in a convex shape.

[Effect]

According to the above means, it is possible to easily run a hoop material formed by connecting a large number of seal tapes and separate the seal tapes while the hoop material is running, thereby speeding up the assembly work of the push button switch element part. made possible.

〔Example〕

EMBODIMENT OF THE INVENTION Below, the seal tape separation apparatus which becomes an Example of this invention is demonstrated using drawing.

FIG. 2 is a front view schematically showing the main parts of a sealing tape separating device according to an embodiment of the present invention, and FIG. 3 is a front view schematically showing the main parts of a sealing tape separating device according to another embodiment of the present invention. It is a front view.

In FIG. 2, in which the same reference numerals are used for parts common to those in the previous figure, the device includes a sprocket wheel 82 that is supported by a rotating shaft 81 and rotates in the direction of the arrow in the figure.
, a peeling block 83 that guides the running of the insulating film 5 at an acute angle and performs the first peeling process, and a rotating shaft 84
a carrier wheel 85 that is supported by and rotates in the direction of the arrow in the figure; and a peeling block 86 that performs a second peeling process that guides the running of the insulating film 5 at an acute angle.
The peeling block 86 includes a pin wheel 88 supported by a fixed shaft 87 and rotating in the direction of the arrow in the figure.
It is arranged so as to be close to the outer cylinder surface of No. 5.

The insulating film 5 supplied from above in the figure is attached to a sprocket wheel 82 and a peeling block 83.
, the intermediate shaft 89, the carrier wheel 85, the peeling block 86, and the intermediate shaft 90, and travels at a predetermined speed in the direction of the arrow in the figure.

The carrier wheel 85 includes a plurality of recesses 91 that vacuum adsorb the seal tape 45, an intake hole 92 that communicates with each recess 89, and a plurality of recesses 91 that are slidable in the radial direction and biased toward the center. The inner end of each pin 93 comes into contact with the cam surface of a plate cam 94 fixed to the fixed shaft 84. In the range where the insulating film 5 contacts the carrier wheel 85, the outer tip of the pin 93 protrudes from the outer cylindrical surface of the carrier wheel 85 and fits into the feed hole 54 of the insulating film 5. It is designed to be retracted from the outer cylinder surface.

The pins 95 installed in the pin wheel 88 have the same pitch as the recesses 91, and when the insulating film 5 is run along the peeling block 86, the sealing tape 45 protruding toward the acute-angled tip of the peeling block 86 is removed. It is adapted to be pressed into the recess 91.

In the device configured as described above, when the insulating film 5 passes the acute-angled tip of the peeling block 83, the seal tape 45 is peeled off (semi-peeled) from the insulating film 5 approximately halfway from the tip, and then peeled off. It is sent to block 86.

Then, a portion of the sealing tape 45 projects from the acute end of the peeling block 86 in the direction of the tip, and the pin 95 presses the protruding portion into the recess 91, and the insulating film 5 runs along the peeling block 86 to release the carrier. Since the wheel 85 is rotating in the direction of the arrow (clockwise rotation), the sealing tape 45 is completely peeled off from the insulating film 5 and vacuum-adsorbed into the recess 91. The vacuum suction is opened when the recess 91 is located directly below the fixed shaft 84, and the terminal plate carrier 9 disposed below the carrier wheel 85 is opened.
Seal tape 4 on the top surface of the terminal board 41 mounted on
5 will be installed.

In the semi-peeling process using the peeling block 83, a portion of the peeled area is reattached to the insulating film 5 between the peeling block 83 and the peeling block 86. However, since the semi-peelable seal tape 45 faces the open space or the closed space in the recess 91, the adhesion is insufficient as it is not pressed. This does not eliminate the role of facilitating peeling using the block 86.

In FIG. 3, where the same reference numerals are used for parts common to those in the previous figure, the device includes a sprocket wheel 98 supported by a rotating shaft 97 and rotating in the direction of the arrow in the figure.
and the insulating film 5 is connected to the sprocket wheel 98.
Guide block 1 that guides along the outer cylinder surface of
00, a guide block 101 having an arc-shaped guide surface 101a for guiding the insulating film 5,
A carrier wheel 85 is supported by a fixed shaft 84 and rotates in the direction of the arrow in the figure, a peeling block 86 is supported by a rotating shaft 87 and guides the running of the insulating film 5 at an acute angle and performs the second peeling process. It includes a pin wheel 88 and the like that rotate in the direction of the arrow in the figure.

The insulating film 5 supplied from the right side of the figure is attached to the guide block 100 and the sprocket wheel 9.
8, a guide block 100, a carrier wheel 85, and a peeling block 86, and travels at a predetermined speed in the direction of the arrow in the figure.

The carrier wheel 85, stripping block 86 and pin wheel 88 are of the same construction and arrangement as those of the apparatus shown in FIG.

The sprocket wheel 98 has a plurality of pins 9.
9 are implanted radially, and the pins 99 are implanted at the same pitch as the connecting pitch of the sealing tape 45 connected to the insulating film 5.
It is arranged to face the center of the Therefore, when the insulating film 5 comes into contact with the outer cylindrical surface of the sprocket wheel 98, a portion of the sealing tape 45 that has been poked by the pin 99 peels off from the insulating film 5.

Since the insulating film 5 guided by the guide block 101 between the sprocket wheel 98 and the carrier wheel 85 follows the arc-shaped guide surface 101a, the sealing tape 4 protruded from the pin 99
5 will almost maintain its shape. Therefore, a phenomenon in which a part of the semi-peel is adhered again is prevented, and peeling using the peeling block 86 becomes easier than in the apparatus shown in FIG.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to configure a device that does not operate intermittently or reciprocatingly, and it is possible to increase the speed of sequentially supplying a large number of seal tapes, shorten the assembly time of the push button switch, and reduce the manufacturing cost. This has the effect of contributing to

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the basic steps of the present invention, Fig. 2 is a front view schematically showing the main parts of a seal tape separation device according to an embodiment of the invention, and Fig. 3 is another embodiment of the invention. FIG. 4 is a side sectional view showing the structure of a push-button switch housing a disc-shaped spring, and FIG. 5 is a diagram illustrating a conventional seal tape manufacturing method. FIG. 6 is a perspective view showing the connecting seal tape. In the figure, 5 is a first insulating film, 6 is a second insulating film, 45 is a sealing tape, and 51
53 is a cover, 53 is a cutting line, 61 is a seal, 62 is an adhesive, 83 and 86 are peeling blocks, 99 is a peeling pin, and 101 is a guide block.

Claims (1)

[Claims] 1 Consisting of a cover 51 cut out from a first insulating film 5 and a seal 61 cut out from a second insulating film, excluding the peripheral edge of an adhesive 62 applied to one surface of the seal 61 When separating the plurality of seal tapes 45 covered with the cover 51 from the connected state in which they are connected to the first insulating film 5 provided with the cutting line 53 for cutting out the cover, a first peeling step is performed. At least one side of the adhesive 62 of the seal 61 is peeled off from the first insulating film 5, and then, in a second peeling step, the first insulating film 5 is guided along a guide path to remove the adhesive. A method for separating a connected sealing tape characterized by peeling off the entire surrounding area of the agent 62 from the first insulating film 5 and pressing the cover 51 against the sealing tape holding part of the sealing tape carrier through the seal 61. . 2. The method for separating connected seal tapes according to claim 1, wherein the first and second peeling steps run the first insulating film 5 at an acute angle. 3. The first peeling step peels off a portion of the seal 61 from the first insulating film 5 through the cover 51, and the second peeling step peels off a portion of the seal 61 from the first insulation film 5.
2. A method for separating a connected seal tape according to claim 1, wherein the insulating film 5 is run at an acute angle. 4. The method for separating a connected seal tape according to claim 1, wherein the guide path guides the first insulating film 5 in a convex shape.