JP3297289B2 - Seal structure of ribbon seal packing for vehicle lighting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for reducing a manufacturing cost in a step of setting a seal packing for burying a gap between a vehicle lamp and a vehicle body in a watertight manner in advance in a flange portion of the vehicle lamp. The present invention relates to a seal structure for such a vehicle lamp ribbon seal packing.

[0002]

2. Description of the Related Art Conventionally, a vehicular lamp has a structure in which a seal packing for burying a gap with a vehicle body in a watertight manner is previously set on a flange portion of the vehicular lamp.
(1) An adhesive layer is formed on one surface of a urethane foam resin sheet, and a seal packing material in which the surface of the adhesive layer is covered with release paper is punched in advance into a flange shape. A method of using the material as a seal packing material, peeling release paper from the seal packing material, and manually attaching the release paper to a flange portion of a vehicle lamp.

(2) A seal packing material in which an adhesive layer is formed on one surface of a urethane foam resin sheet and the surface of the adhesive layer is covered with release paper, which is cut into a long shape having a flange portion in advance. Was used as a seal packing material, and the seal packing was assembled to the vehicle lighting device by a method of manually attaching the seal packing material so as to go around the flange portion of the lamp while sequentially peeling the release paper from the seal packing material. .

[0004]

However, according to the conventional method of assembling the seal packing as described in the above (1) or (2), in the case of (1), workability in assembling is good. However, since the seal packing material is punched into the shape of the flange portion, there is a problem that the yield of the material is very poor and the material cost increases. In the case of (2), although the material cost is reduced, not only the number of assembling steps is increased, but also
There is a problem that the quality becomes unstable and a defective product having a problem in the sealing performance is manufactured.

[0005] For this reason, in the case of (1), when the sealing material is processed by punching from the seal packing material, the sealing material formed in a front shape different from the flange portion so as to reduce the enclosed portion to be punched and discarded is reduced. Although a method of assembling by utilizing the deformability of the material at the time of sticking is also practiced, there is a problem that not only the workability in the assembling process is poor, but also the material cost is not significantly improved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and can reduce the material cost by making the yield of the material 100%, and can easily automate it, and can achieve stable quality and labor saving. Seal seals for vehicle lighting
An object of the present invention is to provide a seal structure for a vehicle seal packing which is excellent in versatility and can be applied to vehicle lamps of various shapes using an endless seal tape as a seal packing material. It is.

[0007]

In order to achieve the above object, a seal structure of a ribbon seal packing for a vehicle lamp according to the present invention is provided between a vehicle body mounting surface of a vehicle lamp as a work and a lamp mounting surface. A seal packing to be interposed, using an endless tape as the seal packing,
After circularly affixing to the tape-applied surface of the work, it is cut as a ribbon-shaped seal packing, and its front end side and rear end side have an overlapping portion having an overlap allowance , and the overlap allowance is provided. Yes
The gist of the present invention is that the front end side of the stacking portion is a depression angle inclined surface and the rear end side is an elevation angle inclination surface. In addition, the ribbon-shaped seal packing that is circumferentially adhered to the tape-attached surface of the work has a stacking portion having an overlap margin on the front end side and the rear end side, and the stacking portion having the overlap margin is formed by a tape cutter. It is also possible to configure so as to have a depression angle inclined cut surface on the front end side formed by the cutting angle and an elevation angle inclined cut surface on the rear end side.

[0008] assembling method of seal packing for a vehicle lamp according to the present invention, there is provided a method of assembling the seal packing that is interposed between the lamp attached surface to the vehicle body mounting surface of the vehicle lamp as a work, the work It has a chuck that can be gripped or released, controls the position and attitude of the workpiece gripped by the chuck, and grips a workpiece having a seal packing assembly surface with a robot having an articulated arm that can be moved and controlled. , And to the tape sticking head,
A long seal packing having a ribbon shape with a predetermined width is sent out, and the robot moves the body mounting surface of the gripped work under the tape sticking head, and the seal packing is supplied and sent from the tape sticking head. The tape-attached surface of the work is controlled to be moved and driven in synchronization with the work, and after the ribbon-shaped seal packing is circularly adhered to the tape-attached surface of the work, the tape-attached head is provided. Cut ribbon seal packing with tape cutter
It is to be assembled in such a manner.

[0009] Further, according to the present invention, there is provided a ribbon seat for a vehicle lamp.
The seal structure of Lu-Packing is applied to the tape
The ribbon-shaped seal packing adhered around the front end side
And a stacking portion on the rear end side, and the tape cap is attached to the stacking portion.
Depression angle of the front end formed by the cutting angle by the cutter
It is preferable to have an inclined cutting surface and an elevation inclined cutting surface on the rear end side .

According to the method for assembling the seal packing,
By adjusting the control system of a robot with multiple joints, it is possible to control the position of the seal packing accurately on the flange surface, and to apply it while controlling the tensile strength. .

Further, the sealing structure of the ribbon seal packing for a vehicle lighting device is such that the stacked portion of the seal packing is formed by a front-end-side inclined-cut section and a rear-end-side inclined-cut section formed from a cutting angle. A structure is formed along the vehicle body mounting surface, and the accumulation portion has a structure that is resistant to water leakage that does not turn up during use.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seal structure of a ribbon seal packing for a vehicle lamp according to the present invention and an automatic sticking device for a seal packing for a vehicle lamp implementing a method for assembling the seal packing will be described with reference to the schematic diagram of FIG. explain. Sign 1
Is a conventionally used 6-axis articulated robot, which has a structure in which a chuck 2 is attached to the tip of an arm, and a vehicle lamp is gripped as a work 30 at a predetermined angle and released at a predetermined position. The chuck 2 is composed of a rotary shaft 1a provided at the tip of the arm and a tool exchange joint 2
It is exchangeably assembled via a.

Reference numeral 3 denotes a seal packing supply unit 4 to 6.
This is a tape sticking head for leading out the ribbon-shaped seal packing 20 to the work 30 gripped at a predetermined angle by the shaft articulated robot 1. In the seal packing supply section 4, a ribbon-shaped seal packing material is wound around a tape bobbin 5 provided with a shaft, and is passed from a lead-out port 7 to a tape attaching head 3 via a plurality of guide rollers 6. Derived. Reference numeral 8 denotes a release paper waste storage box.

As shown in FIG. 2 in which the main part is enlarged, the tape application head 3 has a hot-wire type tape cutter 10 mounted in front of a tape holding guide roller 9 provided at the end thereof, and has a two-stage motion type cylinder. The heat wire 12 which advances or retreats by 11 is displaced obliquely rearward toward the guide plate 13 and advances and retreats to the groove-like back blade 14 fixed to the guide plate 13.

As shown in FIG. 3, a ribbon-shaped seal packing 20 used in the automatic sticking device for a vehicle lamp seal packing is provided on one surface of a foamed elastic body 21 such as a synthetic rubber mixture or the like. An adhesive layer 22 made of woven paper or the like is formed, and the adhesive layer 22 has a cross-sectional structure in which the surface of the adhesive layer 22 is covered with release paper 23. The adhesive layer 22 has a ribbon shape with a predetermined width, and is long.

Next, a method of attaching the ribbon-shaped seal packing 20 to the work 30 by using the automatic sticking apparatus for a vehicle lamp seal packing will be described. (1) The work 30 is gripped by the chuck 2 attached to the six-axis articulated robot 1 and is opposed to the tape attaching head 3 under the tape pressing guide roller 9.

(2) The ribbon-shaped seal packing 20
In the seal packing supply section 4, the release paper 23 is peeled off and guided by the tape adhering head 3 to reach below the guide roller 9 via the position of the hot wire type tape cutter 10. The cut surface at the beginning and end of the seal packing 20 cut by the hot-wire tape cutter 10 has a structure in which the hot-wire 12 advances obliquely rearward toward the guide plate 13 and is melted and cut. As shown, the front end side has a depression angle inclined cut surface 24, and the rear end side has an elevation inclination cut surface 2.
5 is formed. At the time of this cutting, the heat wire 1
2 starts cutting from the adhesive layer 22 side of the seal packing 20.

(3) As shown in FIG. 4, the vehicle lamp of the work 30 has a flange 31 forming a mounting surface with the vehicle.
A low protruding rib 32 is formed substantially at the center of the (vehicle mounting surface), and the seal packing 20 is circumferentially attached to the surface of the flange 31 (shown by oblique lines in FIG. 4) so as to distribute the protruding rib 32. Things. When the arm and the rotating shaft 1a of the six-axis articulated robot 1 are driven to grip the projecting rib 32 of the work 30 so as to move in the same direction under the tape pressing guide roller 9, the seal packing supplied to the flange 31 surface is provided. 20 is adhered to the flange 31 surface and the ridge rib 32 by the adhesive layer 22.

(4) The length up to the end of the seal packing 20 is about 5 m when the overlap margin 26 with the start end (see FIG. 4D).
m by the hot wire tape cutter 10. For this reason, in the overlapping portion of the seal packing 20, FIG.
As shown in FIG. 7, a structure of a stacking portion 27 which is easy to follow a non-backwardly inclined surface between the flange 31 surface and the front end side inclined depression cut surface 24 and a rear elevation inclination cut surface 25 is formed.

(5) Next, the six-axis articulated robot 1 is moved to the product table 15, the chuck 2 is opened, and the vehicle lamp on which the seal packing 20, which is the work 30, is completed is released.

According to the method for assembling the seal packing for a vehicle lamp, the control system of the six-axis articulated robot 1 is adjusted so that the seal packing 20 can be precisely positioned and adhered to the surface of the flange 31. Instead, it acts to adhere while controlling the tensile strength.

The stacking portion 27 of the seal packing 20
Is formed along the flange 31 by the depression angle inclined cutting surface 24 on the front end side and the elevation angle inclined cutting surface 25 on the rear end side formed from the angle of cutting.
However, it has a structure that is resistant to water leakage that does not turn up during use. Furthermore, the structure in which the hot wire 12 is cut from the adhesive layer 22 side of the seal packing 20 allows heat energy to be effectively consumed and shortens the cutting time.

[0023]

As described above, the seal structure of the ribbon seal packing for a vehicle lamp according to the present invention is such that a ribbon-shaped seal packing material is adhered along the body mounting surface of the vehicle lamp. , Seal packing material 1
00% can be used effectively, reducing material costs.

Further, according to the method of assembling the seal packing according to the present invention, since the ribbon-shaped seal packing is attached using an automatic attaching apparatus comprising a six-axis articulated robot, automation is achieved. It has excellent features such as easy production, stable quality and labor saving, and the effect of the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a schematic view of an automatic sticking device of a seal packing for implementing a method of assembling a ribbon seal packing for a vehicle lamp according to the present invention.

FIG. 2 is an enlarged view of a main part showing a structure of the tape sticking head.

FIG. 3 is a sectional view of a ribbon seal packing for a vehicle lamp according to the present invention.

FIGS. 4A and 4B are a front view showing a seal packing surface of a work, an enlarged sectional view taken along line AA in FIG. 4B, an enlarged sectional view taken along line BB in FIG. It is explanatory drawing (d) which shows the relationship between the front work surface and seal packing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 6-axis articulated robot 2 Chuck 3 Tape sticking head 4 Seal packing supply part 7 Outlet 9 Tape holding guide roller 10 Hot wire type tape cutter 11 Two-stage motion type cylinder 12 Hot wire 13 Guide plate 14 Groove back blade 20 Ribbon-shaped seal packing 21 Foam elastic body 22 Adhesive layer 23 Release paper 27 Stacking section 24 Depressed angle inclined cut surface 25 Elevated angle inclined cut surface 30 Work (vehicle lamp) 31 Flange (vehicle mounting surface) 32 Ridge rib

Continuation of the front page (56) References JP-A-6-210741 (JP, A) JP-A 55-140855 (JP, U) JP-A 3-15748 (JP, U) JP-A 58-17708 (JP) , U) Hikaru Hei 3-124511 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F21S 8/10 F16J 15/10 B60Q 1/00 F21W 101: 14

Claims (2)

(57) [Claims] 1. A seal packing interposed between a vehicle mounting surface of a vehicle lamp as a work and a lamp mounting surface, wherein an endless tape is used as the seal packing, and the seal packing circulates around a tape mounting surface of the work. After sticking, it is cut as a ribbon-shaped seal packing, and has a stacking portion with an overlap margin on the front end side and the rear end side, and the front end side of the stacking portion with the overlap margin is inclined at a depression angle A seal structure for a ribbon seal packing for a vehicle lighting device, wherein a rear end side is an elevation angle inclined surface. 2. The ribbon-like seal packing, which is circumferentially adhered to a tape-applied surface of a work, overlaps a front end side and a rear end side.
The stacking portion having the overlap margin has a front-end-side depression-angle-inclined cut surface and a rear-end-side inclination-inclined cut surface formed by a cutting angle by a tape cutter. A seal structure for a ribbon seal packing for a vehicle lamp according to claim 1.