JP2000335460A - Bonding method for seal rubber or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the contact relation in face-to-face state to decrease shaking of a bonding head by keeping the respective axes of rotation of a pressing roller and a positioning roller parallel to each other, and pressing seal rubber or the like to a plate-like member with the positioning roller in contact with the plate-like member to be bonded. SOLUTION: A positioning roller 40 is supported on a rotating shaft 43 vertically fixed to a base member 39 of a bonding head 38, and formed by a large- diameter part 44 and a small-diameter part 45, a guide flat surface 46 being formed in the boundary part between them. In the case of bonding seal rubber 30 by using the bonding head 38, first, an opening and closing member 66 is opened to put seal rubber 30 on a lower guide roller 62, and the seal rubber 30 is guided between a pressing roller 41 and the positioning roller 40 to perform bonding and movement. At this time, the seal rubber 30 can be surely pressed to a plate-like member 22 by two pressing rollers 41, 42, and abnormal clockwise and counter-clockwise movement can be surely prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION A seal rubber or the like is applied to a peripheral portion of a window glass of an automobile. In order to perform such attachment, a positioning roller and a pressing roller such as a seal rubber are employed. The present invention belongs to the field of attaching a seal rubber or the like to such a plate-like member.

[0002]

2. Description of the Related Art The prior art will be described with reference to FIGS. Here, the plate-shaped member is a window glass of an automobile, and the glass is fixed to the vehicle body by a so-called direct glazing technique. The illustrated one is a dam for receiving an adhesive member. It is usually made of an elongated rubber material. The dam 3 is attached to the surface 2 of the window glass 1 and must be attached exactly along the end face 4 of the glass 1 as shown in FIG. A method devised therefor uses a positioning roller 5 pressed against the end face 4 of the glass and a pressing roller 6 pressing the dam 3 against the surface 2.

In order to realize the above-described method, a structure in which the bonding head 7 is equipped with the rollers 5 and 6 and the dam 3 is continuously introduced is adopted. The bonding head 7 is substantially L
Brackets 9 and 9 are formed on a letter-shaped substrate 8, and a positioning roller 5 is rotatably attached to a shaft 10 laid on the bracket 9. The positioning roller 5 has its cylindrical surface 11 pressed against the glass end surface 4, and the rotation axis of the roller 5 is set in the same direction as the thickness direction of the glass 1. On the other hand, the holding roller 6 has a shaft 13 laid on the same brackets 12, 12 as the positioning roller 5, and the holding roller 6 is attached here in a rotatable state. This roller 6
Are in a positional relationship staggered at right angles to the rotation axis of the positioning roller 5. A thick guide portion 15 is formed at an end of the substrate 8, a guide hole 15 is formed in the guide portion 15, and the dam 3 extends toward the holding roller 6 through the guide hole 15. Reference numeral 16 denotes a tape for protecting the adhesive of the dam 3, and the tape 16 is adhered while being peeled off. Reference numeral 17 denotes a grip held by the operator, which is firmly fixed to the substrate 8.
Here, the illustration of the adhesive member impregnated with the adhesive is omitted.

When performing the bonding operation, the operator holds the dam 3 with the pressing roller 6 while pressing the cylindrical surface 11 of the positioning roller 5 against the glass end surface 4 while holding the grip 17. Move. Then
The position of the holding roller 6 is determined by the positioning roller 5, and the dam 3 is attached as shown in FIG.

[0005]

According to the above-described method, since the cylindrical surface 11 of the positioning roller 5 is pressed against the glass end surface 4, the phenomenon that the entire apparatus shown in FIG. This is likely to occur, and if so, the pressing roller 6 is also displaced in the vertical direction in FIG. Accordingly, the guide hole 15 and the pressing roller 6 are displaced from each other, and the dam 3 is not stuck accurately along the end face 4 but is stuck in a meandering manner. Such "meandering" is more likely to occur when the distance L1 between the positioning roller 5 and the pressing roller 6 is large.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems.
The basic idea is to specify the positional relationship between the rotation axis of the positioning roller and the rotation axis of the pressing roller, and to perform a highly stable guide function on the guide plane of the positioning roller. The object to be pasted may be a dam as described above, or may be an elongated rubber material that performs a sealing function.
These are collectively referred to as “seal rubber or the like”.

According to the first aspect of the present invention, the positioning roller attached to the base member of the bonding head is moved in contact with the end surface of the plate member to maintain the relative position between the base member and the plate member in a predetermined positional relationship. In a type in which a pressing roller installed near a positioning roller is attached to a base member, a relative position between the pressing roller and the positioning roller is set, and a seal rubber or the like is bonded to the plate-like member, the rotation axis of the pressing roller and The method is characterized in that the rotation axis of the positioning roller is substantially parallel to the guide roller, and a sealing rubber or the like is pressed against the plate-like member with a holding roller while the guide plane of the positioning roller is in contact with the end surface of the plate-like member. is there. Since the guide plane of the positioning roller is in contact with the end surface of the plate-like member, the bonding proceeds while maintaining a so-called face-to-face contact relationship.

According to a second aspect of the present invention, in the first aspect, the seal rubber or the like has a main body portion which is brought into close contact with the surface of the plate member and a lip portion which is bent from the main body portion and comes into close contact with the end surface of the plate member. When the guide surface of the positioning roller is brought into contact with the end surface of the plate member, the lip portion is bonded in a compressed state between the end surface of the plate member and the pressing surface of the pressing roller. Is the way. Due to the above compressed state, the main body is adhered to the surface while the lip is firmly pressed against the end face of the plate-like member.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in FIGS. This embodiment relates to a case where glass is bonded to a back door of an automobile, and the bonding portion is shown in FIGS. FIG. 7 is a simplified three-dimensional view as viewed from the rear of an automobile, in which a back door 21 is attached to a rear body 20 and a glass 22 is adhered thereto. A door frame 23 into which the back door 21 fits is installed at the rear of the vehicle body. The back door 21 is composed of a main body 24 and a frame 25, and the frame 25 is further composed of an inner plate 26 and an outer plate 27. The plate 27 is hemmed as shown.

The glass 22 is adhered to the outer plate 27 by an adhesive member 28, and the member 28 is formed of an elongated urethane impregnated with an adhesive. A dam 29 is provided to dam this adhesive. This dam 29
The seal rubber 30 is formed on a part of the seal rubber 30 and tightly closes the gap between the door frame 23 and the glass 22 as shown in FIG. Seal rubber 30
Is a main body 32 that is brought into close contact with the surface 31 of the glass 22.
And a lip portion 33 bent from the main body portion 32, and the lip portion 33 is brought into close contact with an end surface 34 of the glass. The seal rubber is made of synthetic rubber,
An adhesive 35 is applied to the back surface of the main body 32, and a protective tape 36 is applied thereto. Reference numeral 37 denotes a weather strip of the back door 21.

In such a part, the glass end face 3
If there is a small gap between the lip 4 and the lip 33, the appearance becomes poor in appearance quality, and further, if water enters, the adhesive 35 may be deteriorated. The present invention gives due consideration to the gap at this point.

The above-mentioned bonding method is realized by an apparatus described below. The bonding head 38 includes a base member 39 made of a thick steel plate and various rollers attached thereto. The bonding head 38 includes a positioning roller 40, a pressing roller 41,
42 performs the main function. Positioning roller 40
Is supported by a rotating shaft 43 fixed vertically to the base member 39 and includes a large-diameter portion 44 and a small-diameter portion 45.
A guide plane 46 is formed at the boundary between 4 and 45.
The guide plane 46 corresponds to an end surface of the large diameter portion 44. Similarly, the holding roller 41 has a large diameter portion 47 and a small diameter portion 48.
A pressing plane 49 is formed at the boundary between the two diameter portions 47 and 48. This pressing plane 49 corresponds to the end face of the large diameter portion 47. A disk 50 is placed slightly away from the small diameter section 48.
Are provided, whereby the groove 51 is formed. This groove 51 receives the dam 29. Since the other pressing roller 42 has substantially the same configuration as the pressing roller 41, the detailed structure will not be described. The guide plane 46 of the positioning roller contacts the glass end face 34, and the pressing rollers 41 and 42 contact the main body 32 of the seal rubber 30 in this state.
This is shown in (B). A grip indicated by reference numeral 17 in FIGS. 2 and 3 is connected to the bonding head 38 described above.

With the above-described arrangement of the rollers, the positioning roller 40 is moved in contact with the end face 34 of the glass to set the relative position between the base member 39 and the glass 22 in a predetermined relationship. Then, by attaching the pressing roller 41 disposed near the positioning roller 40 to the base member 39, the relative position between the pressing roller 41 and the positioning roller 40 is set. In other words, the base member 39
Thus, the positional relationship between the positioning roller 40 and the pressing roller 41 is determined.

The rotating shafts 52, 5 of the pressing rollers 41, 42
3 is fixed vertically to the base member 39 in the same manner as the rotary shaft 43, and therefore, the pressing roller 41,
The rotation axis of 42 and the rotation axis of positioning roller 40 are substantially parallel. The offset amount O between the pressing roller 41 and the positioning roller 40 is set to a minimum value for maintaining an interval required for allowing the seal rubber 30 to pass between the two rollers. The guide plane 46 is a holding plane 49
In the axial direction, and the amount of the displacement is indicated by reference numeral L2. Each of the rotating shafts 43, 52 and 5
3 is screwed into the base member 39 as shown in FIG. 2 and fastened with lock nuts 54, 55 and 56.

In order to understand the specific structure of each roller, the detailed structure of the pressing roller 41 is shown in FIG.
The large-diameter portion 47 and the small-diameter portion 48 are both formed of outer races of ball bearings. Each ball bearing is sequentially pressed against a flange 57 formed integrally with the rotating shaft 52, and further, after a collar 58 and a washer 59 are fitted, A bolt 60 is screwed into the rotating shaft 52. The disk 50 is supported so that it can rotate around the collar 58. The disk 50 is made of a polyamide resin.

A mechanism for introducing the sealing rubber 30 into the bonding head 38 will be described with reference to FIGS. Base member 39
The lower guide roller 62 is attached to the protruding piece 61, and its mounting structure employs the same shaft structure as the various rollers 40, 41, and 42 as apparent from FIG. The roller 62 has a groove 63 for receiving the seal rubber lip 33. An opening / closing member 66 is rotatably supported by another protruding piece 64 of the base member 39 via a shaft 65. The opening / closing member 66 is made of a steel plate, and has a shape in which an upper plate 67 and a horizontal plate 68 are bent. Horizontal plate 6
Numeral 8 is arranged in parallel with the base member 39, and an upper guide roller 70 is rotatably supported by a rotating shaft 69 coupled thereto, and forms a pair with the lower guide roller 62. A small-diameter roller 71 is provided on the upper guide roller 70, and the dam 29 passes through the space provided by the small-diameter roller 71.

Two guide rollers 72, 72 extending downward are provided on the upper plate 67, and the interval between the two rollers 72, 72 is set slightly larger than the width of the seal rubber 30.
7, and is rotatably supported by a shaft 73 fixed thereto. A return coil spring 74 is provided between the horizontal plate 68 and the base member 39, and its rotational force is regulated by a stopper pin 75 provided on the base member 39, and the rollers 70 and 72,
72 operating positions are defined. Opening / closing member 66 of FIG.
When the left side is pressed, the opening / closing member 66 rotates counterclockwise, and the rollers 70 and 72 are lifted upward, so that the initial insertion of the seal rubber 30 is facilitated.

The situation where the lip 33 is compressed will be described with reference to FIG. The amount of displacement between the guide plane 46 of the positioning roller and the pressing plane 49 of the pressing roller is indicated by the aforementioned reference numeral L2, and is set to be smaller than the thickness of the lip 33. That is, the lip portion 33 is in a state of protruding from the guide plane 46 by the dimension L3 (see FIG. 3A). FIG. 3A shows that the seal rubber 30 is guided by the pressing roller 41 and the two rollers 41 and 4 are used.
0 is approaching the glass 22. When each roller moves rightward and the guide plane 46 hits the glass end face 34, and the pressing roller 41 is further pushed down to the glass 22 side, the state shown in FIG. In this state, the lip portion 33 is compressed between the glass end surface 34 and the pressing flat surface 49 by the above-described installation of L3,
The lip inner surface 76 is firmly adhered to the glass end surface 34. While maintaining the state of FIG.
Is moved toward the arrow 77 in FIG.
Are continuously adhered along the edge of the glass 22. In FIG. 1, the protective tape 36 is peeled off when the seal rubber 30 passes through the lower guide roller 62.

When bonding the seal rubber 30 using the bonding head 38 described above, first, the opening / closing member 66
Is opened, the seal rubber 30 is placed on the lower guide rail 62, the closing member 66 is closed, and the seal rubber 30 is further guided between the holding roller 41 and the positioning roller 40,
In this state, after the movement as shown in FIG. 6 is performed, the adhesive movement is performed as described above. In this embodiment, since there are two pressing rollers 41 and 42, the pressing operation is surely performed. In FIG. 1, two roller pressings are required for the clockwise or counterclockwise movement. Abnormal movement can be prevented. By pushing the opening / closing member 66, the upper guide roller 70 and the guide rollers 72, 72
Is retracted upward, so that the initial operation of inserting the seal rubber 30 is simplified, and the rollers 70 and 7
Since the guide is smoothly guided by 2, 72, the friction phenomenon with the inner surface of the hole as in the guide hole 15 in FIG. 13 can be avoided. Internal stress is eliminated. Further, since a space (see FIG. 3) for passing the grooves 51, 51 for accommodating the lip portion 33 and the dam 29 is provided, the seal rubber 30 smoothly passes without exhibiting an abnormal posture such as tilting. Thus, a highly reliable bonding method can be obtained.

[0020]

According to the present invention, the positioning roller attached to the base member of the bonding head is moved in contact with the end surface of the plate member to maintain the relative position between the base member and the plate member in a predetermined positional relationship. In a type in which a holding roller installed near the positioning roller is attached to the base member, the relative position between the holding roller and the positioning roller is set, and a seal rubber or the like is adhered to the plate-like member, the rotation axis of the holding roller is positioned. The rotation axis of the roller is almost parallel to the axis,
This is a method in which sealing rubber or the like is pressed against the plate-like member by a pressing roller while the guide plane of the positioning roller is in contact with the end surface of the plate-like member, and is bonded.

Therefore, since the guide plane of the positioning roller hits the end face of the plate-shaped member, a surface-to-face contact relationship is established at this portion, which is effective in reducing the wobble of the bonding head. In the case of a positioning roller as in the prior art, the cylindrical surface of the roller is in contact with the end surface of the plate-shaped member. The present invention is excellent. Further, since the rotation axis of the positioning roller is disposed substantially parallel to the rotation axis of the pressing roller, the positioning roller has two functions of a function as the above-described guide plane and a function of guiding the seal rubber and the like on the roller cylindrical surface. Is achieved, and a single roller can be provided with multifunctionality and bonded.

Further, according to the present invention, the sealing rubber or the like is provided with a main body portion which is brought into close contact with the surface of the plate-like member, and a lip portion which is bent from this main body portion and comes into close contact with the end surface of the plate-like member. When the guide plane is brought into contact with the end face of the plate member, the lip is bonded in a compressed state between the end face of the plate member and the pressing plane of the pressing roller. Therefore, the inner surface of the lip such as the seal rubber is securely brought into close contact with the end surface of the plate-shaped member, and the problem of appearance quality due to the generation of a gap can be avoided.

When such a bonding method is performed at the tip of a robot (for example, a six-axis robot), the movement along the shape of the plate-like member is performed by the teaching function of the robot, and the seal rubber is attached to the plate-like member. Fine dimensional accuracy that can be brought into close contact with the end face can be obtained by the method of the present invention, and is therefore advantageous in terms of automation.

[Brief description of the drawings]

FIG. 1 is a front view of a bonding head used in the method of the present invention.

FIG. 2 is a sectional view taken along line (2)-(2) of FIG.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 1;

FIG. 4 is a three-dimensional view of a positioning roller.

FIG. 5 is a cross-sectional plan view of a pressing roller.

6A and 6B are side views illustrating an operation state of a positioning roller and a pressing roller, wherein FIG. 6A is a state before contact with a plate-like member, and FIG. 6B is a state after contact.

FIG. 7 is a simplified three-dimensional view of the rear of the vehicle showing the back door.

FIG. 8 is a sectional view taken along line (8)-(8) of FIG. 7;

FIG. 9 is a sectional view of a seal rubber alone.

FIG. 10 is a cross-sectional view showing a state in which a seal rubber is attached to glass.

FIG. 11 is a simplified plan view of the prior art.

FIG. 12 is a sectional view taken along line (12)-(12) of FIG. 11;

FIG. 13 is a simplified front view showing a pasted state of a conventional technique.

[Explanation of symbols]

 38 Adhesive head 39 Base member 40 Positioning roller 22 Plate member 41, 42 Pressing roller 30 Seal rubber, etc. 46 Guide plane 34 End face 31 Surface 32 Main body section 33 Lip section 49 Pressing plane

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3D114 AA15 BA09 CA07 DA02 DA17 EA15 FA09 GA03 GA05 4F211 AA45 AD04 AD05 AD08 AD21 AD23 AG03 AG23 AG28 AH17 TA03 TC09 TC13 TC22 TD12 TJ13 TJ14 TJ15 TJ21 TJ29 TN47 TQ03

Claims (2)

[Claims] 1. A positioning roller attached to a base member of an adhesive head is moved in contact with an end surface of a plate member to maintain a relative position between the base member and the plate member in a predetermined positional relationship, and to be close to the positioning roller. In the type in which the holding roller installed in the base member is attached to the base member, the relative position between the holding roller and the positioning roller is set, and a seal rubber or the like is adhered to the plate member, the rotation axis of the holding roller and the rotation axis of the positioning roller And a sealing rubber or the like is pressed against the plate-like member with a pressing roller while the guide flat surface of the positioning roller is in contact with the end surface of the plate-like member, and is bonded. 2. The positioning roller according to claim 1, wherein the seal rubber or the like is provided with a main body portion that is brought into close contact with the surface of the plate member and a lip portion that is bent from the main body portion and comes into close contact with the end surface of the plate member. Wherein when the guide plane is brought into contact with the end surface of the plate member, the lip portion is bonded in a compressed state between the end surface of the plate member and the pressing surface of the pressing roller. .