JP3311906B2 - Extrusion molding terminal connection method with integrated panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding terminal connecting method for extruding a molding on a peripheral portion of a panel such as a window glass of an automobile.

[0002]

2. Description of the Related Art For example, a windshield made of a synthetic resin or rubber has a fixed cross section around the periphery of the windshield for the purpose of fixing the windshield of an automobile airtightly to a vehicle body and improving the appearance. It is mounted in a frame shape. Since this molding usually has a constant cross section, it is convenient to form the molding by extrusion. Conventionally, therefore, it has been common practice to first apply an adhesive to the peripheral portion of the front window glass, attach a molding formed in a straight line by extrusion to the front window glass, and bond and fix it. However, at the corners of the front window glass, since the molding is bent at a substantially right angle, there is a problem that the molding is wrinkled or lifted and the appearance is impaired. There is also a problem that the number of steps of the work of mounting while bending is large.

[0003] In order to avoid such a problem,
For example, Japanese Patent Application Laid-Open No. 63-15726 discloses a method in which a panel is disposed in a pair of molds and a frame is integrally formed on a peripheral portion by injection molding. However, if the material of the panel is glass or the like, the panel may be damaged by the pressure generated by clamping the pair of dies. Japanese Patent Application Laid-Open No. Hei 4-261822 discloses that a molding space corresponding to the cross-sectional shape of a frame (mall) is formed by inserting a part of a peripheral portion of a panel into a die of an extrusion die and inserting the die into the die. A method is disclosed in which a molding is formed by relatively moving a die along a peripheral edge while extruding a molding material.

According to the method disclosed in Japanese Patent Application Laid-Open No. Hei 4-261822, the work of mounting the molding along the peripheral edge of the panel becomes unnecessary, and the number of steps is reduced. The appearance is improved without wrinkles or lifting of the body. In addition, it is possible to solve the problem of panel damage due to mold clamping. By the way, in the case of extrusion molding, continuous extrusion molding pressure is obtained by continuous supply of molding material. Therefore, there is no problem during the molding, but the molding material is too small or too large at the start of molding and at the end of molding, and it is difficult to mold into a predetermined cross section. In particular, in the method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-261822, a molding space is formed between the base and the panel. Therefore, the initial stage of molding after inserting the panel into the base and the base from the panel are removed. In the latter half of the molding, there is a problem that the cross-sectional shape of the molded body becomes indefinite.

[0005] Therefore, in the method disclosed in the above publication, both ends of the molded molding are cut off after extrusion molding, and a separately formed piece is adhered to a gap formed thereby, or the gap is molded. It was necessary to connect both terminals by placing them inside and performing injection molding to complete a molding that goes around the panel.

[0006]

However, in the method of retrofitting another piece, a gap is formed between the end face of the formed extruded molding and the end face of the another piece bonded, and a defect in the sealing function and appearance is caused. appear. In addition, in the injection molding method, although there is no gap between the extrusion molding 100 and the injection molding 101, an extra resin is required for the runner portion 102 and the gate portion 103 as shown in FIG.
A step of cutting off that part after molding is required. In addition, since a slide core or the like must be used for an inevitable undercut from the molding shape, the mold structure becomes complicated, the mold clamping pressure is high, the glass 200 is broken, and burrs occur due to high injection pressure. There is also a defect.

The present invention has been made in view of such circumstances, and has as its object to easily connect the terminals of a panel-integrated extrusion molding directly or through a separately formed molding without gaps. And

[0008]

Means for Solving the Problems A first method for solving the above problems is described below.
The features of the panel integrated extrusion molding terminal connection method of the invention of
A panel integrated extrusion molding terminal connection method for connecting a starting end and an end of an extruded molding substantially directly around a peripheral portion of a panel, or directly connecting end faces thereof through a separately formed molding. The resin melted by heating the connection part by ultrasonic vibration is melted and the gap formed between the start end and the end
Fill the gaps formed between the beginning and end and the separate molding.
It is to connect by welding.

A feature of the terminal connecting method of the panel-integrated extruded molding of the second invention is that a starting and end of the extruded molding formed substantially directly around the periphery of the panel are formed separately or separately. This is a panel integrated extrusion molding terminal connection method in which end faces are opposed to each other via a connection, and a replenishing material of the same material as the molding is supplied to the connection portion, and at least the replenishing material is heated and melted by ultrasonic vibration to melt. I
The gap or starting end formed between the starting end and the end
Fill the gap formed between the end and the separate molding.
And welding the connection part.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the mall terminal connection method of the first invention, when directly connecting the starting end and the end of the molding, first extrude around the peripheral portion from the starting point of the panel and cut out the defective portion at the starting end. Then, the end is cut so as to be in the same position as the cut portion at the start. Then, the start end and the end are opposed to each other and ultrasonically vibrated, so that the start and the end are heated and melted and filled in a gap formed between the start and the end to be welded and joined to form the start and the end. Is directly connected.

When the starting end and the terminal end are connected via a separate molding, the extruding molding is cut off so that the starting end and the terminal end face each other with a space therebetween, and a separately formed separate part is formed at the cut portion. Adhere the mall with adhesive. When the separate molding and the starting end are welded, and the separate molding and the end are also welded, the gap formed between the separate molding and the starting end and the terminal is filled with the molten resin, and the extrusion molding and the separate molding are separated. Are connected.

Further, in the mall terminal connecting method of the second invention,
At least the supply material is ultrasonically vibrated. As a result, at least the replenishing material is heated and melted, flows into the gap at the connection portion, and fills the gap. Thus, even if the volume of the gap is large, the gap can be filled by supplying the replenishing material, so that the connection portions can be connected without a gap.

[0013]

The present invention will be specifically described below with reference to examples. (Embodiment 1) In this embodiment, as shown in FIG. 1, a molding 2 is formed by extruding a molding 2 around the periphery of one side of a front window glass 1 (hereinafter referred to as glass 1) of an automobile. The present invention is applied to terminal connection.

The molding 2 is composed of a base 20 having a substantially square cross section and joined to the glass 1 and a lip 21 projecting from the base 20 to the side opposite to the glass 1, and is formed of a soft thermoplastic resin. ing. And it is comprised so that it may be integrally joined to the glass 1 surface by extrusion molding. As shown in FIG. 2, the glass 1 is suction-held by a suction cup 12 on a hand 11 of a robot 10 having multiple degrees of freedom, and a peripheral portion is inserted into a die body 30 and a base 36 of the extruder 3 in a fixed state. In this state, the molten resin material is extruded from the base 36, and at the same time, the hand 1 of the robot 10 is
The molding 2 is extruded on the periphery of the glass 1 by the movement of the molding 1.

As shown in detail in FIG. 3, a die body 30 is attached to the tip of the extruder 3 by a fixing bar 31. The die body 30 has a material supply path 34 having one end communicating with the material supply path of the extruder 3 via a joint pipe 32 and the other end opening to an outlet 33 formed in the front end surface of the die body 30. Is formed. Die body 30
A guide groove 35 for moving and guiding the glass 1 in a state where the peripheral edge portion of the glass 1 is inserted is formed in the side surface of the glass. A die 36 is provided with a predetermined number of bolts 3 on the front end surface of the die body 30.
7 are detachably fixed.

An extrusion opening 38 communicating with an outlet 33 of the material supply passage 34 is provided through the base 36. The mouthpiece 36 has a side opening 39 in which the extrusion port 38 is opened to the side of the mouthpiece 36 and a part of the peripheral portion of the glass 1 can be inserted into the extrusion port 38. A molding space corresponding to the cross-sectional shape of the molding 2 is formed by one surface of the peripheral portion of the glass 1 inserted into the extrusion opening 38 from the side opening 39 and the peripheral wall surface of the extrusion opening 38.

To extrude the molding 2 integrally with the peripheral portion of the glass 1 in the apparatus configured as described above, first, a part of the peripheral portion of the glass 1 sucked and held by the hand 11 of the robot 10 is used. The guide groove 35 of the die body 30 and the side opening 39 of the base 36 are inserted. Then, the robot 10 is driven so that the peripheral portion of the glass 1 moves along the guide groove 35 and the side opening 39, and at the same time, the molding material is extruded from the extrusion port 38 of the base 36 through the outlet 33 of the material supply path 34. .

The extruded molding material is cooled and solidified at the peripheral portion of the glass 1 and the molding 2 is gradually formed. The cross section of the tip of the molding start end 22 is undefined due to excess or deficiency of the amount filling the molding space. After the glass 1 has moved a predetermined distance, the section of the molding 2 has a regular shape. By driving the robot 10, the molding 2 having a regular cross-sectional shape is formed at the peripheral edge of the glass 1, and the molding end is formed near the molding start end around the peripheral edge. Then, the supply of the molding material is stopped, and the glass 1 is extracted from the base 36.

Here, the cross-sectional shape of the molding start end 22 and the end of the molding end 23 of the molding 2 is indefinite due to a change in the supply amount of the molding material. Accordingly, the forming start end 22 and the forming end 23 are cut off by a predetermined length up to a portion having a predetermined cross-sectional shape. Next, a separate molding 24 is prepared from a material of the same material as the molding 2 so as to have the same cross-sectional shape as the molding 2 and cut to the length of the cutout portion 25, and as shown in FIG. The separate molding 24 is attached to the cut portion 25 by using. However, gaps are formed between both end surfaces of the forming start end portion 22 and the forming end portion 23 opposed to each other with the cutout portion 25 interposed therebetween and both end surfaces of the separate molding 24, and the appearance and the sealing performance are impaired.

In this embodiment, the ultrasonic vibration welding apparatus shown in FIG. 5 is used to heat and weld the joint between the separate molding 24 and the boundary between the molding start end 22 and the molding end 23 by ultrasonic vibration. I do. The ultrasonic vibration welding apparatus 4 includes a base 40 having a work holding portion 41, a slide portion 42 which is engaged with a rail 40a provided on the base 40 and is movably held in a direction perpendicular to the sheet of FIG. A holding member 43 pivotally supported by a shaft portion 42a extending from the slide portion 42;
An ultrasonic oscillator 44 fixed to 3 and an ultrasonic oscillator 44
And a welding horn 45 extending toward the work holding portion 41 below.

The work holding part 41 is provided with a receiving base 46, and the lip 21 of the molding 2 is placed on the receiving base 46 when the glass 1 is held by the work holding part 41. . A spring 47 for urging the holding member 43 upward is provided on the shaft portion 42a.
The tip of the welding horn 45 is moved to the lip portion 21 of the molding 2 placed on the receiving base 46 by operating the lever 48 provided on the 3 to lower the holding member 43 against the urging force of the spring 47. They are configured to be close to each other.

In order to connect the connecting portions using the ultrasonic vibration welding apparatus 4, first, the glass 1 is connected to the work holding portion 41.
And the lip portion 21 of one connecting portion (a boundary portion between the molding start end portion 22 and the separate molding 24) located at one end of the separate molding 24 is placed on the receiving stand 46. Then, the ultrasonic oscillator 44 is driven and the lever 48 is operated to lower the welding horn 45 so as to approach the lip 21 placed on the receiving base 46. Then, the lip portion 21 is vibrated by the ultrasonic wave, and is melted by the heat generated thereby to fill a gap generated between the end face of the separate molding 24 and the end face of the forming start end 22. As a result, at one connecting portion, as shown in FIGS. 6 and 7, a fusion portion 25 is formed between the separate molding 24 and the molding start end portion 22, and the fusion portion 25 is formed at the molding start end portion 22.
By forming the filling portion 26 between the and the separate molding 24,
The molding start end 22 and the separate molding 24 are welded and integrated.

The welding horn 45 is raised by operating the lever 48, and the sliding portion 42 is slid to move the welding horn 45 to the position of the next connecting portion existing at the boundary between the molding rear end 23 and the separate molding 24. Move up to. Then, similarly to the above, the connection portion between the molding rear end portion 23 and the separate molding 24 is connected. According to the present embodiment, the connection is completed in about several seconds from the start of the vibration by the ultrasonic wave to the cooling, and the processing time required for the connection can be reduced as compared with several tens of seconds when the connection is performed by injection molding. Further, since the welding horn 45 itself is not heated and has no heat storage, there is no adhesion of the molten resin, and maintenance can be made unnecessary. (Embodiment 2) This embodiment is the same as Embodiment 1 up to the point where the separate molding 24 is stuck to the cut-off portion 25, and thereafter the connecting portion is formed by using the ultrasonic vibration welding device 5 shown in FIG. Weld. This ultrasonic vibration welding apparatus 5 has the same configuration as the ultrasonic vibration welding apparatus 4 of the first embodiment except that a connection guide 6 is held instead of the receiving table 46.

The connection guide 6 is composed of a fixed part 60 fixed to the work holding part 53 and a movable part 62 held by the fixed part 60 via a hinge part 61 so as to swing freely. 2 is held between the fixed part 60 and the movable part 62. The movable portion 62 is provided with a through hole 63 and a resin supply passage 64, and the resin supply passage 64 is opened in the through hole 63. The base 20 of the molding 2 is exposed in the through hole 63, the replenishing resin 7 is supplied to the upper portion of the base 20, and the welding horn 55 is configured to be able to enter and exit the through hole 63 above the base 20.

In this embodiment, the connection portion is held by the connection guide 6, and the supply resin 7 of the same material as the molding 2 is supplied from the resin supply passage 64. In this state, the welding horn 55 is lowered and brought into a state close to the replenishing resin 7 in the through hole 63, so that the replenishing resin 7 generates heat by ultrasonic vibration and is melted. As shown in FIG. 9, the molten resin fills the gap between the separate molding 24 existing at the connecting portion and the base 20 of the molding start end portion 22, and also fills the gap of the lip portion 21 through the gap. As a result, a filling molding 27 having the same cross-sectional shape as that of the extrusion molding 2 is formed, and the separate molding 24 and the molding start end 22 are welded and integrated via the filling molding 27.

As described above, in this embodiment, the supply resin 7 is supplied and melted by ultrasonic vibration, so that not only the gap of the lip 21 but also the gap of the base 20 can be filled as in the first embodiment. In addition, even if the volume of the gap is large, it can be filled. Therefore, the connection strength is improved and the reliability of the sealing property is also improved. Although the separate molding 24 is used in the above embodiment, the molding start end portion 22 and the molding end portion 2
In the case where the end faces 3 are close to each other, the separate molding 24 can be omitted, and the forming start end 22 and the forming end 23 can be directly welded and connected.

[0027]

In other words, according to the method for connecting the terminals of the extruded moldings of the present invention, the terminals of the extruded moldings can be easily connected directly or through a separate molding without any gap. Also, the time required for connection is extremely short, and the number of steps can be greatly reduced as compared with the case where connection is performed by injection molding.

In the obtained molding, the joining strength of the lip portion is improved as compared with the case where another piece is bonded, and a high sealing property can be secured. Further, according to the panel integrated extrusion molding terminal connection method of the second invention, even when the volume of the gap between the terminals of the extrusion molding or the terminal and the terminal of the separate molding is large, the gap is reliably filled. Connection can be made, and higher joining strength and sealing properties are ensured.

[Brief description of the drawings]

FIG. 1 is a sectional view of a glass with an integral extrusion molding manufactured in one embodiment of the present invention.

FIG. 2 is an explanatory view of an apparatus for manufacturing an extrusion molding in one embodiment of the present invention.

FIG. 3 is an explanatory view of an extruder used in one embodiment of the present invention.

FIG. 4 is an explanatory view showing a cut portion of the molding and a separate molding in the embodiment of the present invention.

FIG. 5 is a front view of the ultrasonic vibration welding apparatus used in one embodiment of the present invention.

FIG. 6 is a perspective view of a main part of a mall connected in one embodiment of the present invention.

FIG. 7 is an enlarged view of a main part of FIG. 6;

FIG. 8 is a sectional view of a main part of a state where a workpiece is held in an ultrasonic vibration welding apparatus used in a second embodiment of the present invention.

FIG. 9 is a perspective view of a main part of a mall connected in the second embodiment of the present invention.

FIG. 10 is a perspective view of a main part of a mall connected by a conventional method.

[Explanation of symbols]

1: Front window glass 2: Mall
3: Extrusion molding machine 4, 5: Ultrasonic vibration welding device 22: Molding start end
23: Forming end 24: Separate molding 25: Cut off

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshikazu Ito 4-1-1 Naganecho, Obu City, Aichi Prefecture Inside Tokai Kogyo Co., Ltd. (56) References JP-A-4-261822 (JP, A) JP-A-49- 74272 (JP, A) JP-A-4-29833 (JP, A) JP-A-57-43145 (JP, U) JP-A-49-165 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 47/00-47/96 B29C 65/00-65/82 B60J 1/02 101 B60J 1/10 B60J 1/16 B60J 5/00 501 B60R 13/06

Claims (2)

(57) [Claims] 1. A panel-integrated extrusion molding terminal for connecting a starting end and an end of an extruded molding substantially directly around a peripheral portion of the panel, or directly or via separate moldings formed separately with their end faces facing each other. A connection method, wherein the connection portion is heated by ultrasonic vibration to melt the resin,
And a gap formed between the end and the start end and the end
A method for connecting a terminal with a panel-integrated extruded molding, characterized in that a gap formed between the separate moldings is filled and welded and connected. 2. A panel-integrated extruded molding terminal for connecting the start and end of the extruded molding substantially directly around the periphery of the panel, directly or through separate moldings formed separately with their end faces facing each other. A connection method, wherein a supply material of the same material as the molding is supplied to a connection portion, and at least the supply material is heated and melted by ultrasonic vibration to form a molten resin between the start end and the end. Gap
Formed between or between the start end and the end and the separate molding
The joint portion is welded and connected by filling the gap into the gap .