JPH0588754B2 - - Google Patents

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Outline of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem (Fig. 1) F. Effect G. Example G. _1. Example and peripheral device Structure (Fig. 2, Fig. 3, Fig. 5) G ₂ Operation of the embodiment (Fig. 1) G ₃ Operation of main parts of the embodiment (Fig. 2) G ₄ Related operations (Fig. 4) ) H Effects of the Invention A Field of Industrial Application The present invention relates to an adhesive piece pick-up device suitable for automation of bonding.

B. Summary of the Invention The present invention provides a method of holding an adhesive piece on a base film placed on a table by a holding means, and moving the base film relative to the table along the end surface of the table.
The adhesive strip can be easily removed from the base film, making it suitable for automated bonding.

C. Prior Art Conventionally, a rotary transformer has been used to transfer signals between a rotating magnetic head of a magnetic recording device (VTR) and a recording/reproducing amplifier.

As shown in FIG. 6, this rotary transformer has a plurality of coils 3a and 3b arranged in a plurality of circular grooves 2a and 2b concentrically carved on one surface of a ring-shaped core 1 made of ferrite. It consists of A liquid adhesive was used to fix the coils 3a, 3b within the grooves 2a, 2b of the core 1.

D Problems to be Solved by the Invention However, due to variations in application conditions, the liquid adhesive may protrude from the grooves 2a and 2b, requiring additional man-hours for rework such as removing excess adhesive. There was a problem that it hindered productivity improvement. Furthermore, since the liquid adhesive contains an organic solvent, there is a risk that the vapor may diffuse into the air and contaminate the working environment.

In order to solve the above-mentioned problems, the applicant has proposed an adhesive sheet having double-sided adhesive pieces formed in the shape of split rings corresponding to a plurality of concentric circular grooves ( Jitsuhei No. 2-13466, Jitsuganaki
59-109600).

As shown in FIG. 7, the previously proposed adhesive sheet has a tape-like double-sided adhesive layer 5 attached to a base film 4 that is cut out using a press machine to form, for example, a ring-shaped ring divided into four parts. adhesive piece 5
Only portions a and 5b remain on the base film 4 and are formed.

By using such adhesive pieces 5a and 5b, the problems of rework and contamination of the working environment when using liquid adhesive can be solved.

However, since the split ring-shaped adhesive pieces 5a and 5b as shown in FIG. This poses a problem in that it is difficult to insert it flatly into the interior, and it requires a lot of man-hours.

In view of the above, an object of the present invention is to provide an adhesive piece pick-up device that can automatically and easily pick up adhesive pieces of a predetermined shape from a base film.

E Means for Solving Problems The present invention involves feeding adhesive pieces of a predetermined shape arranged at predetermined intervals on a long base film to predetermined positions one after another on a table having an end face at the tip. ,
While holding the adhesive piece sent to a predetermined position by the holding means, the table and the holding means are moved relatively so that the tip of the table passes through the holding means, and the base film is moved along the end surface of the table. The device is an adhesive pick-up device that peels and picks up adhesive pieces from a base film by moving the adhesive pieces relative to the table, and the table is a movable table that moves back and forth. The base film is fixed on the table during the forward movement and the adhesive piece is sent to a predetermined position as the table moves, and the base film is not fixed on the table during the return movement of the table. This is a device for picking up adhesive pieces.

F Effect According to such a configuration, pieces of adhesive having a predetermined shape can be sequentially picked up from the base film, making it easy to automate the adhesion.

G. Embodiment Hereinafter, with reference to FIGS. 1 to 5, an embodiment will be described in which an adhesive piece pick-up device according to the present invention is applied to an assembly device for a rotary transformer of a VTR.

_G1 Embodiment and Configuration of Peripheral Devices First, the configuration of the main parts of an automatic assembly device for a rotary transformer including an embodiment of the present invention will be described with reference to FIG.

In FIG. 3, 6 is a supply reel, and 7 is a take-up reel.
A roll 9 in which an adhesive sheet in which the number b is arranged at a predetermined interval and a laminating paper 8 are stacked and wound is attached, and the laminating paper 8 is wound onto the reel 7.

Reference numeral 11 denotes a peeling table, which is horizontally movable to the left from the illustrated position. Peeling table 1
1 and one end surface 13 intersect at an acute angle, and the edge 13e thereof is polished to an appropriate small radius of curvature. A roller 15 is attached to the tip of an L-shaped arm 14 extending below the table 11. The clamp 16 is movable together with the table 11, and the clamp 17 is fixed. The base film 4 on which the adhesive pieces 5a and 5b are arranged is given an appropriate back tension and is stretched from the supply reel 6 to the upper surface 12 of the peeling table 11, the end surface 13 forming an acute angle thereto, and the roller 15. The leading end of the base film 4 passes through a fixed clamp 17 and is wound onto a reel 18. 19 is adhesive piece 5
This is a photoelectric position sensor that detects the positions of a and 5b.

Reference numeral 20 indicates a vacuum chuck as a whole, which is disposed so as to face the upper surface 12 of the table 11 on the downstream side when the table 11 is at the limit of movement on the take-up reel 18 side (downstream side). Suction openings 22a and 22b of appropriate shapes are provided on the lower surface of the suction portion 21 of the vacuum chuck 20 in order to suction the adhesive pieces 5a and 5b.
will be placed. Note that the adhesive piece and suction port are illustrated in a simplified manner.

31 is a core storage section, and the core 1 stored therein is pushed from the top surface of the supply table 32 to the pressing section 33.
It is pushed onto the core table 35 by the pressing rod 34, and is set in a predetermined position and orientation by the positioning jig 36. Reference numeral 37 denotes an electromagnet, which is connected to the vacuum chuck 20 by a connecting member 38. With the core 1 placed thereon, the core table 35 moves below the electromagnet 37 to face it.

39 is a conveyor, and the distance between the conveyor 39 and the core table 35 is set equal to the distance between the core table 35 and the peeling table 11, and the vacuum chuck 20 is moved to the lower right in the figure and attached to the core table 35. When facing each other, the electromagnet 37 connected to the vacuum chuck 20 by the connecting member 38 faces the conveyor 39 above the starting end.

Next, referring to FIG. 2, a vacuum chuck 20, which is a component of an embodiment of the present invention, will be explained.

In FIG. 2, four suction parts 21 are provided, for example, corresponding to the ring-shaped adhesive pieces 5a, 5b divided into four as shown in FIG. The suction ports 22a and 22b are connected to an external load source via an air chamber 23 and an exhaust port 24, respectively.

Reference numeral 25 denotes a disc-shaped support member, on the lower part of which two dovetail grooves 25a having an inverted trapezoidal cross section are formed orthogonally to each other, and support the four suction parts 21 so as to be slidable in the radial direction. There is. 26 is a taper pin,
It is disposed so that its axis coincides with the axis of the support member 25, and is driven vertically by an air cylinder 27, and its downward limit is adjusted by a screw 28.
A groove 2 in which a coil spring 29 surrounds the outer periphery of each suction part 21
1g to elastically fasten each suction part 21. Further, the supporting member 30 having an L-shaped cross section is connected to the connecting member 38 via an air cylinder (not shown).
is connected to the air cylinder, and by this air cylinder,
The entire vacuum chuck 20 is raised and lowered. Further, the vacuum chuck 20 is provided with a plurality of positioning pins (not shown) in order to regulate its relative position with the base film 4.

Corresponding to the above-mentioned assembly apparatus, the base film 4 on which the adhesive pieces 5a, 5b of a predetermined shape are arranged at a predetermined interval is appropriately colored.
As shown in FIG. 5, a set of adhesive pieces 5a, 5b
A plurality of round holes 4a for positioning are provided around the base film 4, and square holes 4c for detecting the positions of the adhesive pieces 5a, 5b are provided at appropriate positions that are not aligned with the positioning holes 4a in the longitudinal direction of the base film 4. It is being Note that this square hole 4c is filled with a set of adhesive pieces 5.
When cutting out parts a and 5b, as shown in the figure, they are simultaneously opened near other sets of adjacent adhesive pieces,
This allows the set of adhesive pieces 5a, 5b to be accurately positioned with respect to the vacuum chuck 20.

Further, the adhesive pieces 5a and 5b are formed from a heat-sensitive (thermally reactivated) double-sided adhesive film in order to be compatible with the assembly process described below.

Note that the adhesive pieces 5a and 5b may be placed on the base film 4 by punching, as disclosed in Utility Application No. 144092/1982 (Kokai No. 47499/1983) filed by the present applicant. can.

_G2 Operation of an Embodiment Next, the operation of an embodiment of the adhesive strip pick-up device according to the present invention will be described with reference to FIGS. 1A to 1E.

In the initial state, the peeling table 11 is at the limit of movement on the supply reel 6 side (upstream side), both clamps 16 and 17 are in the open state, and the vacuum chuck 2 is in the open state.
0 is in the raised position.

First, as shown in FIG. 1A, the upstream clamp 16 is closed and the base film 4 is fixed to the table 11. When the table 11 moves downstream in this state, that is, moves forward, the downstream clamp 17 is released, so the base film 4 moves downstream together with the table 11 while receiving tension from the take-up reel 18. do.

As shown in Figure B, the edge 13 of the table 11
When the pair of adhesive pieces 5a and 5b closest to e reach directly below the suction ports 22a and 22b of the vacuum chuck 20, the position sensor 19 detects the square hole 4c of the base film 4 shown in FIG. 5 above. and table 1
1 is stopped.

Next, as shown in Figure C, the clamp 17 on the downstream side is closed, and immediately after that, the clamp 16 on the upstream side is opened, and the back tension torque of the supply reel 6 is temporarily cut off. In this way, the plurality of positioning pins (not shown) of the vacuum chuck 20 are inserted into the plurality of positioning holes 4a (see FIG. 5) of the base film 4 which is now in a tension-free state, and the adhesive on the base film 4 is inserted. Agent pieces 5a, 5b and suction port 22 of vacuum chuck 20
a and 22b are exactly opposite to each other. Thereafter, the vacuum chuck 20 is lowered, and the adhesive pieces 5a, 5b are sucked and held by the suction ports 22a, 22b.

When only the positioning pin (not shown) of the vacuum chuck 20 rises from the state shown in FIG. Same figure D
As shown in , it begins to move upstream, that is, to move back. At this time, the base film 4 is attached to the table 11.
The clamp 17 on the downstream side is in an unfixed state.
Since the base film 4 is closed, as the table 11 moves, the base film 4 touches the edge 1 of the table 11.
3e along the end surface 13 in the direction of the roller 15. On the other hand, since the adhesive pieces 5a and 5b are suctioned and held by the suction ports 22a and 22b of the vacuum chuck 20, as shown in FIG.
b and the base film 4 begin to peel off.

As mentioned above, the suction port 22 of the vacuum chuck 20
The radius of curvature of the edge 13e of the peeling table 11 that presses the adhesive pieces 5a, 5b relative to the adhesive strips 5a, 22b is appropriately selected to be small, and
Since the top surface 12 and end surface 13 of the table 11 intersect at an acute angle, the downward force applied to the adhesive pieces 5b, 5a is small when the base film 4 is peeled off, and the adhesive pieces 5a, 5b are stably attached to the vacuum chuck 20. is adsorbed to.

As shown in FIG. 1E, when the peeling table 11 has moved to its upstream limit, a pair of adhesive pieces 5a and 5b are separated from the base film 4 and adsorbed to the vacuum chuck 20.

The peeling process is now complete, and one set of adhesive pieces 5
The vacuum chuck 20 that has picked up the adhesive pieces 5a and 5b returns to the raised position, and the adhesive pieces 5a and 5b are taken up from the base film 4. In this state, the vacuum chuck 20 is moved to face the core 1 placed on the core table 35 in the next insertion step (details will be described later), and the transferred adhesive pieces 5a, 5b are moved to face the core 1 placed on the core table 35.
are inserted into the grooves 2a, 2b of the core 1 to return to the initial state.

_G3 Operation of Main Parts of Embodiment Returning again to FIG. 2, the operation of the dimension adjustment mechanism of the vacuum chuck 20 will be described. In FIG. 2, when the taper pin 26 is driven downward,
Each suction portion 21 slides outward against the elasticity of the coil spring 29 fitted in the groove 21g. Therefore,
From the central axis A of the vacuum chuck 20 to each suction port 22
The distance (adsorption radius) to a and 22b is expanded.

Conversely, when the taper pin 26 is driven upward, each suction portion 21 slides inward due to the elasticity of the coil spring 29, and the suction radius is shortened.

When the taper pin 26 is at the upper limit of its movement range, the suction radius is at its minimum. Dimensions are set. Grooves 2a, 2 for each lot of core 1
Variations in the radius of b are dealt with by regulating the amount by which the taper pin 26 descends using the adjustment screw 28.

Since the vacuum chuck 20 has the suction radius adjustment function as described above, the adhesive piece 5 that is suctioned by it
The radius of curvature of grooves a and 5b is also the same as that of grooves 2a and 2 of core 1.
b is set equal to the lower limit of the variation in the radius of the grooves 2a and 2b for each lot of the core 1, and for the variation in the radius of the grooves 2a and 2b for each lot of the core 1, the multi-division of the ring-shaped adhesive pieces 5a and 5b and the suction radius of the vacuum chuck 20 are This is supported by the adjustment function.

Therefore, despite the variations in the dimensions of the core 1, it is sufficient to prepare only one type of vacuum chuck and one type of mold for cutting out adhesive pieces, which reduces the manufacturing cost of the vacuum chuck and mold, and reduces mold replacement. The number of man-hours required for production preparation, etc., is reduced, and together with the cost reduction due to the relaxation of core acceptance standards, the cost reduction and productivity improvement are remarkable.

G ₄ related operations Next, while referring to Figure 4, vacuum chuck 2
0, the adhesive pieces 5a and 5b are in the grooves 2a and 2a of the core 1,
The insertion step of inserting into 2b will be explained. At the beginning of one cycle of the insertion process, the fourth
As shown in Figure A, the suction port 2 of the vacuum chuck 20
2a and 22b are adhesive pieces 5 on the peeling table 11
a and 5b, and an electromagnet 37 also faces the core 1A on the core table 35. Adhesive pieces 5a and 5b have been inserted into the grooves 2a and 2b of this core 1A in the previous cycle.

In the first step of the insertion process, the vacuum chuck 20
attracts and picks up the adhesive pieces 5a and 5b as described above. At the same time, the electromagnet 37 attracts the inserted core 1A on the core table 35 and rises.

In the second step, as shown in Figure B, the vacuum chuck 20 and the electromagnet 37 move together, and the electromagnet 37 faces the conveyor 39. At this time, the new core 1 is placed on the core table 35 adjacent to the core supply stand 32 (see FIG. 3), so the vacuum chuck 20 does not face the core table 35.

In the third step, as shown in FIG. The adsorbed adhesive pieces 5a, 5b are inserted and pressed onto the bottom surfaces of the grooves 2a, 2b. Then, pressurized air is supplied to the air chamber 23 of the vacuum chuck 20, and the adhesive piece 5
a, 5b are separated from the suction ports 22a, 22b. As mentioned above, since the adhesive pieces 5a and 5b are heat-sensitive, the core 1 is preheated to an appropriate temperature.

Meanwhile, the electromagnet 37 is deenergized and the inserted core 1
A is placed on the conveyor 39 and transferred to the next coil bonding process.

With this, one cycle of the adhesive piece insertion process is completed, and the vacuum chuck 20 and electromagnet 37 are
Return to the position shown.

Although the embodiment in which the present invention is applied to the assembly of a rotary transformer for a VTR has been described above, the present invention is not limited to this embodiment only.
It can be applied to bonding parts having surfaces to be bonded of arbitrary shapes.

H. Effects of the Invention As detailed above, according to the present invention, there is provided an adhesive piece pick-up device that can easily pick up adhesive pieces from a base film and is suitable for automating the gluing of various parts. can get.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing the operation of an embodiment of an adhesive piece pick-up device according to the present invention, FIG. 2 is a cross-sectional view showing the configuration of essential parts of an embodiment of the present invention,
The figures are schematic line layout diagrams showing an embodiment of the present invention and the configuration of peripheral devices; FIG. 4 is a schematic diagram showing related operations of an embodiment of the present invention; FIGS. 5, 6, and 7. FIG. 1 is a plan view and a perspective view for explaining the present invention. 4 is a base film, 5a and 5b are adhesive pieces,
11 is a peeling table, and 20 is a holding means (vacuum chuck).

Claims (1)

[Claims] 1. Adhesive pieces of a predetermined shape arranged at predetermined intervals on a long base film are sequentially fed to predetermined positions on a table having an end surface at the tip, and are placed at the predetermined positions. The table and the holding means are moved relative to each other so that the tip end of the table passes through the holding means while the sent adhesive piece is held by the holding means, and the base film is An adhesive piece pick-up device, wherein the adhesive piece is peeled off and picked up from the base film by being moved along an end surface of the table relative to the table, The table is a movable table that moves back and forth, and when the table moves back and forth, the base film is fixed on the table and the adhesive piece is sent to a predetermined position as the table moves, and when the table returns An adhesive piece pick-up device comprising a fixing means that causes the base film to become unfixed to the table during movement.