JPH049028Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic adhesive applicator for applying adhesive to the periphery of an automobile window glass.

This type of adhesive applicator is, for example, disclosed in Japanese Utility Model Publication No. 57-57827, and is configured to fix a window glass in a fixed position and move an adhesive discharge nozzle along its periphery. what you did,
Alternatively, as disclosed in Japanese Utility Model Application Publication No. 56-141777, a master model having a shape similar to a window glass is rotated around a fixed rotation center by a driving means that drives the master model while being in contact with its outer periphery, and
A device has been proposed that includes a nozzle that moves together with the driving means, and is configured such that the periphery of a window glass placed on a master model passes below the nozzle.

However, in these devices, the relative speed between the nozzle and the periphery of the window glass, that is, the adhesive application speed changes at the corners of the window glass, making the amount of adhesive applied inconsistent, or the direction of the nozzle and the periphery of the window glass changes. The disadvantage is that the parallel relationship with the curve is not maintained at the corners. In particular, the latter drawback becomes a problem in the following cases. In other words, in order to prevent excess adhesive from leaking from the joint between the window glass and its adhesive partner (vehicle body), and to prevent the occurrence of areas where no adhesive exists between the two, it is necessary to As shown in the figure, a triangular notch B is provided at the tip of the adhesive discharge nozzle A, and by discharging the adhesive C from the notch B onto a triangular cross section, the amount of adhesive applied per unit length can be reduced. It is effective to minimize the coating height and increase the coating height as much as possible, but in that case,
Unless the direction of the nozzle is maintained parallel to the periphery of the window glass, it will not be possible to apply the coating well as shown in FIG.

On the other hand, according to Japanese Utility Model Application Publication No. 56-52063, a turntable having approximately the same shape as a window glass is driven by a gear rotating around a fixed center that meshes with a rack provided on the peripheral edge of the turntable. A coating device is disclosed. According to this device, it is possible to maintain a constant adhesive application speed and maintain a parallel relationship between the periphery of the window glass and the orientation of the nozzle even at the corner portion of the window glass. However, according to this configuration, when the gear D is driving the corner _E1 of the turntable E as shown in FIG. 2, the rotation center O of the turntable E is located near the corner _E1 . Therefore, the corner
The moving speed at the other corner E ₂ on the diagonal of E ₁ becomes extremely high. It is practically extremely difficult to move the turntable and the glass placed thereon at such a high speed. To solve this problem, as shown in _FIG . Therefore, when the corner portion E ₁ ′ of the turntable E′ is driven at a constant speed, other corner portions located diagonally
The moving speed of E ₂ ′ can be reduced. However, in this case, the distance r' from the rotation center O' to the corner edge of the turntable E' becomes larger than the distance r' from the rotation center O' to the corner edge of the turntable E'. The moving speed v' of the peripheral edge of the window glass, that is, the adhesive application speed becomes faster than the feeding speed v, and the amount of adhesive applied per unit length becomes insufficient.

The present invention addresses the above-mentioned problems in the conventional method, and has a structure in which the amount of coating per unit length is approximately constant even at the corners of the window glass, and the triangular cross section as shown in Fig. 1 is applied. The purpose of the present invention is to realize an automatic adhesive application device for automobile window glass that can apply adhesive well in the following manner.

That is, the present invention provides an automatic adhesive application device for automobile window glass that applies adhesive discharged from an adhesive discharge nozzle to the peripheral edge of a window glass placed on a turntable, in which the turntable is used as a base member. The turntable is rotatably supported on a support shaft that is movable in a horizontal plane, and a speed-changing cam surface and a driving peripheral surface are arranged side by side on the outer periphery of the turntable, and both of these surfaces are connected to a window glass. Positioning in which the straight portions have corresponding shapes, the corner portions have a radius of curvature of the driving peripheral surface larger than the radius of curvature of the speed change cam surface, and the driving peripheral surface is positioned at a predetermined position with respect to the base member. In addition to providing the member, a drive system is provided that has a continuously variable transmission and that drives the turntable via the driving peripheral surface by the output member coming into contact with the driving peripheral surface at the positioning portion by the positioning member, and further, A moving body that can approach and move away from the turntable and is biased in the approaching direction is provided, the nozzle is attached to the moving body, and a contact member that comes into contact with the speed changing cam surface of the turntable is provided. The present invention is characterized by comprising an operating member that is provided on the moving body and that operates the continuously variable transmission in the deceleration direction by movement of the moving body when the contact member abuts the corner portion of the speed change cam surface. .

According to such a configuration, when applying adhesive to the corner portion of the window glass, the radius of curvature of the driving peripheral surface of the turntable driven by the output member of the drive system is increased at the corner portion. Therefore, the circumferential speed of the turntable at the other corner diagonally opposite to the circumferential speed of the turntable at the corner does not become significantly large. Also, at this time, the moving body to which the nozzle is attached is moved via the contact member by the speed change cam surface, which has a radius of curvature smaller than that of the driving circumferential surface, and in conjunction with the movement, the moving body By operating the speed change mechanism in the deceleration direction, the rotation of the output member in the drive system is decelerated, and as a result, the adhesive application speed at the corner portion of the window glass periphery is lower than that of the straight portion etc. The adhesive is applied almost uniformly over the entire periphery of the window glass.

Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

As shown in FIG. 4, adhesive automatic application device 1
These include a glass receiving part 3 on which the window glass 2 of the automobile is placed, a driving part 4 that drives the turntable 11 in the glass receiving part 3, and an adhesive application that applies adhesive to the periphery of the window glass 2. It consists of section 5.

Turntable 1 in the glass receiving part 3
1 is rotatably supported by a support shaft 12, and the support shaft 12 has a first swing arm 13 that can swing freely, and a second swing arm 14 that is connected to the swing end of the arm 13. By being supported by the support stand 15 via the support shaft 12, the turntable 11 can freely move in a horizontal plane together with the support shaft 12. Also,
The upper surface of the turntable 11 is provided with a plurality of fixing devices 16 . . . 16 for fixing the window glass 2 by suction. However, the turntable 11 is configured in two stages, upper and lower, and the outer circumferential surface 17 of the lower part 17 is
A gear engaging member 18 in the form of a rack or chain is provided endlessly around the entire circumference of the shaft a, and the upper half of the outer peripheral surface of the upper step 19 is a cam surface 20. Here, as shown in FIG. 5, the planar shape of the lower outer circumferential surface 17a of the turntable 11 or the orbital shape of the gear engaging member 18 approximately matches the contour shape of the window glass 2, but there are four locations. The radius of curvature R' at the corner portion of the window glass 2 is made larger than the radius of curvature R of the window glass 2.
Further, the contour shape of the cam surface 20 also substantially matches the window glass 2, but the radius of curvature R'' at the corner portion is smaller than the radius of curvature R' of the orbital shape of the gear engaging member 18, and the window glass 2 Therefore, at the corner portion, the cam surface 20 protrudes outward from the orbital shape of the gear engaging member 18, and the window glass 2 further protrudes outward. becomes.

Further, as shown in FIG. 4, the drive unit 4 includes a motor 22 provided below the pedestal 21, a continuously variable transmission 23 provided integrally with the motor 22, and the pedestal 21 and the top thereof. Reducer case 2 installed in
A reduction gear 26 is rotatably supported in a horizontal plane via a shaft 25 between the top plate 24a of the gearbox 24 and the reduction gear 26 to which the output rotation of the transmission 23 is input;
The drive gear 27 is fixed to the output shaft 26a of No. 6. Two turntable positioning rollers 28, 28 are provided on the front edge (on the turntable 11 side) of the top plate 24a, and a cylinder is provided inside the lower section 17 of the turntable 11. 29, the outer circumferential surface 17a of the lower table portion 17 is moved by the rollers 28,
A pressing roller 30 is provided to press against the turntable 28, and the side surfaces of the lower turntable section 17 are held between the rollers 28, 28, and 30 from the inside and outside. Further, in this state, the reducer 26, which is rotatable around the shaft 25, is mounted on the case so that the drive gear 27 meshes with the gear engagement member 18 provided on the outer circumferential surface 17a of the lower part of the turntable 11. It is pressed and biased by a spring 31 installed between it and the side plate 24b.

On the other hand, the adhesive application section 5 includes a substrate 32, a support plate 33 erected on the substrate 32, a mounting plate 34 hanging down from the upper end of the support plate 33, and a mounting plate 34 that is suspended from the upper end of the support plate 33.
The main component is an adhesive application unit 35 attached to the adhesive coating unit 35. The adhesive discharge nozzle 37 protruding downward from the adhesive tank 36 in the adhesive application unit 35 is connected to the peripheral edge 2a of the window glass 2 placed on the turntable 11.
is directed from above. In this case, the lower part of the mounting plate 34 is swingable toward and away from the turntable 11, and is biased toward the turntable 11 by the cylinder 38. 35 is attached to the mounting plate 34 so as to be swingable in a horizontal plane. Thereby, the contact plate 39 provided at the tip of the nozzle 37 is always in contact with the peripheral side of the window glass 2, so that the position and orientation of the nozzle 37 with respect to the peripheral edge of the window glass are correctly regulated.

However, the adhesive application section 5 configured as described above
The bearing members 41 . Above the case top plate 24a, the entire case is slidable toward and away from the turntable 11, and faces brackets 42, 42 that support the rear ends of the guide shafts 40, 40. Bearing member 4
1 and 41, the turntable 11 is biased by springs 43 and 43 installed between the turntable 1 and the turntable 11. A roller 44 is provided at the edge of the substrate 32 on the turntable 11 side so as to face the upper half of the outer peripheral surface of the upper stage 19 of the turntable 11, that is, the cam surface 20. Further, an upper end of a gear shift lever 46 whose intermediate portion is pivotally supported to the pedestal 21 via a bracket 45 is connected to the rear part of the substrate 32 in the adhesive application section 5, and a lower end of the lever 46 is connected to the speed change operation rod 23a of the continuously variable transmission 23, and
The transmission 23 is configured to be operated in a deceleration direction via the lever 46 when the vehicle 2 slides rearward.

According to the above configuration, the turntable 11 on which the window glass is placed has the outer peripheral surface 17a of the lower part 17.
is the roller 28 in a fixed position by the cylinder 29,
It is positioned by being pressed against 28,
In this state, the driving gear 27 is connected to the spring 31 by the gear engaging member 18 provided on the outer peripheral surface 17a of the lower step portion 17.
The mesh is caused by the pressing action of the Thereby, the turntable 11 is rotationally driven by the motor 22 via the continuously variable transmission 23, the speed reducer 26, and the gear 27. At this time, the roller 2
Adhesive discharge nozzle 37 located above 8, 28
The peripheral edge 2a of the window glass 2 passes below, and the adhesive is applied to the peripheral edge 2a. In that case, since the spindle 12 of the turntable 11 is movable in the horizontal direction, the turntable 1
Even if the distance to the periphery of the roller 1 changes, the outer circumferential surface 17a of the lower step part is always kept in contact with the rollers 28, 28. Further, even if the positional relationship of the peripheral edge of the window glass 2 with respect to the outer peripheral surface 17a changes, the adhesive application unit 35 can swing in two directions, and the contact plate 39 integrated with the nozzle 37 is moved by the cylinder 38. Since it is in contact with the peripheral side of the window glass 2,
The position and orientation of the nozzle 37 relative to the periphery of the window glass are maintained correctly.

Now, as shown in FIGS. 4, 5 and 6, the drive gear 27
Assume that the nozzle 37 is applying adhesive to the periphery of the window glass 2. At this time, at the side Y, the roller 2
The outer circumferential surface 17a of the lower part of the turntable 11 positioned by the gears 8 and 28 or the orbital shape of the gear engaging member 18 with which the gear 27 meshes substantially matches the cam surface 20 of the upper part 19 of the turntable. Therefore, the roller 44 in contact with the cam surface 20 or the substrate 32 of the adhesive application section 5 that supports the roller 44 are at the forward position serving as a reference,
Along with this, the operating rod 23a of the continuously variable transmission 23 is connected to the base plate 32 via the speed change lever 46.
is also in the reference position. Therefore, the gear ratio of the transmission 23, the rotational speed of the drive gear 27, and the turntable 1
The speed of movement of the peripheral edge of 1, the speed of application of adhesive by the nozzle 37, etc. are all set at predetermined speeds.

However, as shown in Figures 7 and 8, the window glass 2
When the corner of the window passes under the nozzle 37, the window glass 2 protrudes outward from the outer circumferential surface 17a of the lower part of the turntable 11 positioned by the rollers 28, 28. Compared to the drive of the turntable 11 at a constant speed by the gear 27, the moving speed of the peripheral edge of the window glass below the nozzle 37 becomes faster. However, at the corner portion, the outer peripheral surface 17
Gear engaging member 1 with which gear a or gear 27 meshes
Since the cam surface 20 protrudes outward from the track shape of 8, as shown in FIG. 7, the substrate 32 of the adhesive application section 5 is moved backward from the reference position shown in FIGS. As a result, the operating rod 23a of the continuously variable transmission 23 is moved in the deceleration direction via the operating lever 46. This results in
The rotational speed of the driving gear 27 itself is reduced, and the turntable 11 is driven by the gear 27 as described above.
Even if the moving speed of the window glass periphery is faster than the driving speed of the window glass, the moving speed of the window glass periphery, that is, the adhesive application speed is made to be approximately the same as when applying the adhesive to the side portion Y.

If a triangular notch 37a is formed at the tip of the nozzle 37 as shown in FIG. 4, the adhesive will be applied with a triangular cross section as shown in FIG. Since the orientation of the nozzle 37 with respect to the periphery of the window glass 2 is always correctly regulated and a parallel relationship is maintained even at the corners, the adhesive can be well applied to the entire circumference of the window glass 2 with a triangular cross section. .

As described above, according to the automatic adhesive applicator for automobile window glass according to the present invention, problems such as having to forcefully move the turntable at an extremely high speed when applying the adhesive to corner parts can be avoided, and the adhesive can be applied to the window glass. It becomes possible to apply the adhesive at a substantially constant speed over the entire periphery of the glass and, if necessary, with a triangular cross section. As a result, a good coating condition with a constant coating amount can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of an adhesive application state, and FIGS. 2 and 3 are schematic plan views of a coating device showing conventional problems. Figures 4 to 8 show an embodiment of the coating device of the present invention, in which Figure 4 is a vertical front view, Figure 5 is a partially cross-sectional plan view, Figure 6 is a plan view of the main part, and Figure 7 is a window view. FIG. 8 is a longitudinal sectional front view of the main part showing the coating on the corner part of the glass, and FIG. 8 is a plan view of the main part. 11...Turntable, 12...Spindle, 17
a... Driving circumferential surface (lower section outer circumferential surface), 20... Gear shifting cam surface, 21, 24... Base member (frame,
transmission case), 23... continuously variable transmission, 27...
Output member (driving gear), 28, 30... Positioning member (positioning roller, pressing roller), 3
2... Moving body (substrate), 37... Nozzle, 44...
...Abutment member (roller), 46...Operation member (speed change lever).

Claims (1)

[Scope of utility model registration request] An automatic adhesive application device for automobile window glass that applies adhesive discharged from an adhesive discharge nozzle to the periphery of a window glass placed on a turntable, wherein the turntable is in a horizontal plane with respect to the base member. The turntable is rotatably supported on a support shaft that is movable within the turntable, and a speed-changing cam surface and a driving peripheral surface are arranged in parallel on the outer periphery of the turntable, and both of these surfaces are connected to the substantially straight part of the window glass. The driving peripheral surface has a corresponding shape, and the radius of curvature of the driving peripheral surface is made larger than the radius of curvature of the gear shifting cam surface at the corner part, and the driving peripheral surface is positioned at a predetermined position with respect to the base member. A drive system is provided with a positioning member, has a continuously variable transmission, and drives the turntable via the drive circumferential surface by the output member coming into contact with the driving circumferential surface at the positioning portion formed by the positioning member. a moving body that can approach and move away from the turntable and is biased in the approaching direction; the nozzle is attached to the moving body;
The movable body is provided with a contact member that comes into contact with the speed change cam surface of the turntable, and the continuously variable speed is controlled by the movement of the movable body when the abutment member abuts the corner portion of the speed change cam surface. An automatic adhesive applicator for automobile window glass, characterized in that it is equipped with an operating member for operating the machine in a direction of deceleration.