JPS61160227A - Welding process by high frequency welder and electrode device thereof - Google Patents

Abstract

PURPOSE:To fit a decorative member in a simple operating process surely and moreover without contaminating the surface of the decorative member with an adhesive, etc. by using the high frequency welder-electrode device composed of a plurality of needle like electrodes. CONSTITUTION:The decorative member 5 on which a woven backing 6 is laminated, is placed on the electrode device 25 of the needle type high frequency welder provided with needle like electrodes 14 and an outer peripheral electrodes 15 having the shape same as that of the surface of a skin 4 and coincident with the shape of the decorative member 5 so as to cause the woven backing 6 to come upward. Further, the base material 2 on which a pad member 3 and the skin 4 are laminated, is lapped on said member 5 so as to cause the skin 4 to be in contact with the woven backing 6. The decorative member 5 is held between an upper electrode 11 and a lower electrode 12, and the outer periphery of the decorative member 5 is welded to the peripheral part of an arm rest 8 by high frequency voltage generated between the upper electrode 11 and the lower electrode 12 by a high frequency generator 30, applying the pressure of some degree in between an upper platen 9 and a lower platen 10. Simultaneously the total surface of the decorative member 5 is caused to be closely in contact with the skin 4 by a plurality of needle like electrodes 14 inside of the outer peripheral electrodes 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for joining decorative materials for automobiles using a high-frequency welder and a high-frequency welder electrode device, and in particular to a method for joining decorative materials such as cloth or brushed tricot for automobile door trims. When welding with a high-frequency welder, we use a high-frequency welder electrode device consisting of a large number of needle-shaped electrodes, and use a high-frequency welder to reliably attach the decorative material in a simple work process without staining the surface of the decorative material with adhesive. The present invention relates to a method and a high frequency welder electrode device.

BACKGROUND OF THE INVENTION In recent years, various interior parts for automobiles have been required as automobiles have become more sophisticated and diversified.

Decorative materials such as fabric and brushed tricot are attached to the periphery of the armrests of automobile door trims to create a luxurious interior and to give each car a different personality.

Conventionally, when joining decorative materials such as fabrics and brushed tricot to the armrest area of the door trim, the eighth
As shown in Fig. 9 and Fig. 9, a core material, adhesive, etc. are used to attach the decorative material.

FIG. 8 is a sectional view of a conventional door trim, in which 21 is a door trim, 2 is a base material, 5 is a decorative material, and 22 is a core material.

In the conventional door trim 21, a decorative material 5 larger in circumference than the core material 22 is adhered to the surface of a core material 22 that matches the shape of the peripheral part of the armrest 8 using an adhesive 24.
The ends of the decorative material 5 protruding from the decorative material 5 are folded back, wrapped around the core material 22, and attached using an adhesive, a fastener, or the like.

The core material 22 to which this decorative material 5 is attached is the pad material 3.
The skin 4 is then bonded to the laminated base material 2 using hooks 23 or the like.

FIG. 9 is a schematic vertical cross-sectional view of a conventional high-frequency welding device, in which 5 is a decorative material, 6 is a lining material, and 15 is an outer peripheral electrode.

Conventionally, when the decorative material 5 is directly welded to the skin 4 of the door trim using a high-frequency welder, a lining 6 having dielectric thermal weldability such as vinyl chloride film is laminated on the back side of the decorative material 5, and the decorative material is shaped into the desired shape. 5 is placed on the outer circumferential electrode 15 with the lining 6 facing upward, and the base material 2 on which the pad material 3 and the skin 4 having dielectric heat weldability are IQ layered is placed on the outer peripheral electrode 15 with the lining 6 facing upward. Layer them so that they are in contact with the lining 6. Then, the decorative material 5 is placed between the upper electrode part 11 and the lower electrode part 12, pressure is applied between the upper surface plate 9 and the lower surface plate 10, and the outer peripheral electrode 15 that matches the shape of the decorative material 5 is used to trim the decorative material 5. The armrest 8 is welded to the periphery of the armrest 8.

Here, on the inside of the outer peripheral electrode 15, a welder electrode for the inside is provided between the lining 6 and the outer skin 4 using an adhesive, and welders such as stripes are formed on the surface of the decorative material 5. The decorative material 5 and the skin 4 are welded together by accenting the recesses of the lines.

Problems to be Solved by the Invention When joining decorative materials such as fabric or brushed tricot to the armrest periphery of an automobile door trim, conventional door trims combine the decorative material 5 with the core material 2 as explained with reference to FIG.
2 and the core material 2 to which this decorative material 5 is pasted.
2 to the base material 2 on which the pad material 3 and the skin 4 are laminated using hooks 23, etc., must be performed separately, and complicated work processes are required, resulting in high costs and labor. In addition, the head of the hook 230 protrudes from the surface of the decorative material 5, and the adhesive 24 is removed from the decorative material 5.
It had the disadvantage that it adhered to the surface and became dirty.

Next, as explained with reference to FIG. 9, when the decoration material 5 is directly welded to the skin 4 of the door trim using a high-frequency welder, conventionally, the inside of the outer peripheral electrode 15 is attached with an adhesive. However, when this adhesive is used, the adhesive adheres to the surface of the skin 4 and decorative material 5 and becomes dirty, resulting in an increase in the number of defective products. Moreover, the use of an adhesive for the decorative material 5 increases the number of work steps, resulting in a disadvantage that the cost of the adhesive and the product become high.

In addition, when an inner welder electrode is provided inside the outer circumferential electrode 15 and the decorative material 5 and the skin 4 are welded while accenting welder lines such as stripes on the surface of the decorative material 5, welding lines such as stripes may be added. Decorative material 5 by widening the line spacing
Since the portion that is not welded to the skin 4 becomes large, there is overlap between the two. Furthermore, since it is not possible to remove the weld line depressions from the surface of the decorative material 5, the design is also limited.

Furthermore, if the distance between the welder lines is narrowed in order to sufficiently weld the decorative material 5 and the skin 4, the total area of the electrodes for high-frequency welding will increase, so that In this case, a large potential difference must be applied between the upper electrode section 11 and the lower electrode section 12 using a large-sized high-frequency generator, and a large amount of equipment is required.

Means and Action for Solving the Problems The present invention has been made in view of the above-mentioned problems, and provides a joining method using a high frequency welder and a high frequency welder electrode device. However, the decorative material is welded directly to the skin, which eliminates the need for core materials, hooks, adhesives, etc. for joining the decorative material, and allows the decorative material to be easily and reliably bonded in the work process. Decorative materials can be welded without staining the surface of the skin.

In addition, there are no weld line dents such as stripes on the inside of the outer peripheral electrode, and the design can take advantage of the characteristics of materials such as cloth and brushed tricot, making the interior of the car even more luxurious. You can give it your own personality.

Furthermore, since the area of the tip of the needle electrode is small, even if a large number of needle electrodes are provided in contact with the entire surface of the decorative material,
Since the total area of the electrodes for high-frequency welding does not become too large, it is sufficient even if the potential difference between the upper electrode 11 and the lower electrode 12 is small, and an inexpensive and small-sized high-frequency generator can be used.

Next, a joining method using a high frequency welder according to the present invention will be explained.

FIG. 1 is a schematic vertical cross-sectional view of a high-frequency welder device for explaining the joining method using a high-frequency welder of the present invention, in which 1 is a door), 2 is a base material, 3 is a pad material, and 4 is a Skin, 5 decorative material, 6 lining, 11 upper electrode part, 12 lower electrode part, 13 electrode substrate, 14 needle-shaped τ:
15 is an outer peripheral electrode, and 25 is a needle-like high frequency welder electrode device.

In the joining method using a high-frequency welder of the present invention, a decorative material 5 laminated with a lining 6 is placed with the lining 6 facing upward, and a needle electrode 14 having the same shape as the surface of the skin 4 and matching the shape of the decorative material 5 is attached. The base material 2 on which the pad material 3 and the skin 4 are laminated is placed on the needle-like high-frequency welder electrode device 25 having the outer peripheral electrode 15 and the skin 4 on which the pad material 3 and the skin 4 are laminated.
K and overlap so that it touches the lining 6. Then, the upper surface plate 9 and the lower surface plate 1 are sandwiched between the upper electrode 11 and the lower electrode 12.
0, and the outer periphery of the decorative material 5 is welded to the periphery of the armrest 80 by the high frequency voltage generated by the high frequency generator between the upper electrode part 11 and the lower electrode part 12. A large number of needle-like electrodes 14 are arranged on the inside.
The entire surface of the decorative material 5 is bonded to the skin 4 in close contact.

The outer peripheral electrode 15 that matches the shape of the decorative material 5 has a welder line 7 on the outer periphery of the decorative material 5, which prevents the decorative material 5 from peeling off at the edges and gives an accent to the door and trim l. However, the acicular high-frequency welder electrode device 25 (in which only the acicular electrode 14 is attached to the electrode substrate 13) alone is sufficient to weld the lining 6 and the outer skin 4.

Decorative materials other than cloth, brushed tricot, etc. 5
has a desired shape that matches the peripheral part of the armrest 8,
A lining material 4 having dielectric thermal weldability such as vinyl chloride is laminated on the back surface. This is to weld the decorative material 5, which is made of a material with low electrical loss such as polyamide fiber, using a high-frequency welder.Instead of laminating the lining 4, a high-frequency welding agent or the like is applied to the back surface of the decorative material 5 to impregnate it. Of course you can.

Further, the material used as the pad material 3 must be a material such as polypropylene that has both pressure resistance and heat resistance to the welding temperature (about 16066° C.) by a high frequency welder. This is achieved by pushing the skin 4 back toward the needle electrode 14 due to the restoring force of the pad material 3 and the thermal expansion of the pad material 3 itself due to the heat of the high frequency welder welding.
This is to absorb molding errors during molding and to reliably weld the lining 6 and the outer skin 4 using all the needle electrodes 14.

Here, the skin 4 is made of a material having dielectric thermal weldability, such as vinyl chloride, as in the conventional case.

FIG. 2 is a perspective view of a door trim obtained by applying the joining method using a high-frequency welder of the present invention, where 1 is the door trim and 7 is a welder line.

The welder line 7 is formed by the outer peripheral electrode 15 that matches the shape of the decorative material 5, and is used to prevent the decorative material 5 from peeling off from the edges and to give an accent to the door trim 1, as described above. This is my understanding.

Moreover, since the inside of the weld line 7 of the decorative material 5 is welded by a large number of needle electrodes 14, the lining 6 of the decorative material 5
and the outer skin 4 are completely in close contact with each other, and the decorative material 5 is reliably joined to the periphery of the armrest 8.

Embodiment Next, an embodiment of the high frequency welder electrode device according to the present invention will be described.

First, the high-frequency welder device used in the high-frequency welder bonding method of the present invention is provided in the same shape as the back surface of the base material 2 and at a position facing the outer peripheral electrode 15 and the needle-shaped electrode 14, as shown in FIG. The upper electrode part 11 is assembled with the upper electrode part 11, the lower electrode part 12 to which a needle-like high frequency welder electrode device 25 which has the same shape as the surface of the skin 4 and matches the shape of the decorative material 5 is attached as a replaceable device, and the upper electrode part 11 are assembled. The upper surface plate 9 attached thereto, the lower surface plate 10 attached with the lower electrode part 12,
It consists of a high frequency generator.

This high frequency generator includes an upper electrode section 11 and a lower electrode section 1.
2 to apply a potential difference between both electrodes, and the lining 6 of the decorative material 5 is welded to the skin 4 by the voltage between the two electrodes and the appropriate pressure between the upper surface plate 9 and the lower surface plate 10. Decorative material 5 is joined to the periphery of armrest 8.

The above-mentioned high-frequency welder devices have been used in the past, but the features of the present invention are that the high-frequency welder electrode device is replaceably attached to the lower electrode part and that a large number of needle-like electrodes are provided on the electrode substrate. It is in.

Hereinafter, the high frequency welder electrode device according to the present invention will be described in detail.

FIG. 4 is a partial perspective view of an electrode showing an embodiment of the high-frequency welder electrode device according to the present invention. Reference numeral 25 designates a needle-like high-frequency welder electrode device, 14 represents a needle-like electrode, and 13 represents an electrode substrate.

The acicular high-frequency welder electrode device 25 has a large number of nail-like acicular electrodes 14 provided on an electrode substrate 13, and has a shape similar to a sword mountain used for fresh flowers.

Here, the tip of the sword-shaped electrode 14 has the same shape as the surface of the outer skin 4, and all the needle-like electrodes 14 weld the lining 6 of the decorative material 5 and the outer skin 4 together.

This needle-shaped high-frequency welder electrode device 25 is suitable for welding decorative materials 5 such as woven fabrics. Since the tip of the shaped electrode 14 is stuck in the decorative piece 5, there is also an advantage that the decorative material 5 does not shift.

FIG. 5 is a partial perspective view of an electrode showing another embodiment of the high frequency welder electrode device according to the present invention, where 16 is an insulating material and 26 is a wire-like high frequency welder electrode device.

The wire-like high-frequency welder electrode device 26 is essentially the needle-like high-frequency welder electrode device 25 shown in FIG. 4, with an insulating material 16 filled between each needle-like electrode 14.

The tip of the wire-like needle electrode 14' is flush with the surface 16a of the insulating material 16.

In addition, the needle-like electrode 14' used in this wire-like high-frequency welder electrode device 26 can have the same diameter from the electrode substrate 13 to the tip because no pressure is applied directly during welding, and it has even greater strength. It is possible to use materials that do not have

This wire-like high-frequency welder electrode device 26 is suitable for welding decorative materials 5 made of materials such as raised tricot that have very noticeable dents. That is, in the needle-like high frequency welder electrode device 25 as shown in FIG.
This is because even if the area of the tip of the decorative material 5 is small, a slight depression will remain on the surface of the decorative material 5. However, if a wire-like high-frequency welder electrode device 26 is used in which the surface 16a of the insulating material 16 and the tip of the needle-like electrode 14' are on the same plane,
Even with the decorative material 5 such as raised tricot, there is no concern about dents caused by welding.

By the way, this insulating material 16 must be made of a material that has high insulation properties, low dielectric loss, heat resistance, and high strength.

In the above, high frequency welding of the lining 6 of the decorative material 5 and the skin 4 of the door trim 1 is performed by pressing the tips of the needle electrodes 14 and 14' tightly against the lining 6 and the skin 4 due to the elasticity of the pad material 3. It is welded.

6 and 7 show still another embodiment of the high-frequency welder electrode device according to the present invention, in which 17 is a resilient needle-like electrode, and 27 is a resilient needle-like high-frequency welder electrode device.

The elastic acicular high-frequency welder electrode device 27 is composed of an insulating material 16, an elastic acicular electrode 17, and an electrode substrate 13. This elastic needle-like high-frequency welder electrode device 27 uses the needle-like electrode 14' as the elastic needle-like electrode 17 having elasticity in the wire-like high-frequency welder electrode device 26 shown in FIG.
The tip of the needle tip portion 2o is slightly protruded from the surface 16a of the insulating portion 16.

This elastic needle-like electrode 17 is attached to an outer cylinder 18 as shown in FIG.
A spring 19 is provided inside the spring 19, and a needle tip portion 20 is attached to the upper end of the spring 19.Since the tip of the needle tip portion 20 slightly protrudes from the surface 16a of the insulating portion 16, the decorative material 5 The decorative material 5 can be welded to the skin 4 by closely pressing the lining 6 and the skin 4.

Such a high frequency welder electrode device 25.2a27 is replaceable depending on the material of the decorative material 5, etc., and the lower electrode part 12 is
You can use the most suitable one.

Effects of the Invention As described above, the present invention consists of a high-frequency welder electrode device consisting of a large number of needle-like electrodes, and the decorative material is welded directly to the skin. To make it possible to weld a decorative material easily and reliably in a simple work process without staining the surface of the decorative material or the skin without using adhesives or the like.

In addition, since welding is performed using needle-shaped electrodes, door trims can be designed by taking advantage of the characteristics of materials such as fabric and brushed tricot, without creating stripes or other weld line dents in decorative materials, making the interior of the car even more luxurious. Tailored fabrics can add individuality.

Furthermore, since the area of the tip of the needle-shaped electrode is small, the total area of the electrode for high-frequency welding is also small, and therefore a small, inexpensive high-frequency generator can be used, which keeps costs low in terms of equipment. be able to.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view of a high-frequency welder device for explaining the joining method using a high-frequency welder of the present invention, and FIG. 2 is a perspective view of a door trim obtained by applying the joining method using a high-frequency welder of the present invention. , Figure 3 is A of Figure 2.
- A sectional view, FIG. 4 is a partial perspective view of an electrode showing an embodiment of the high frequency welder electrode device according to the present invention, and FIG.
The figure is a perspective view of a partial electrode showing another embodiment of the high frequency welder electrode device according to the present invention, and FIG. 6 is a perspective view of a partial electrode showing still another embodiment of the high frequency welder electrode device according to the present invention. 7 is an enlarged sectional view showing the main parts of the high frequency welder electrode device shown in FIG. 6, FIG. 8 is a sectional view of the conventional door), and FIG. 9 is a sectional view of the conventional high frequency welder electrode device. FIG. 1... Door trim 2... Base material 3... Pad material 4... Outer skin 5... Decorative material 6... - Lining 13... Electrode substrate 14.14'... Acicular electrode 15... Outer electrode 16... Insulating material 17...・Elastic needle-like electrode 18...Outer cylinder 19...Spring 20...Needle tip

Claims (5)

[Claims] (1) In a method of joining a decorative material laminated with a dielectric heat-weldable lining to a base material laminated with a pad material and a dielectric heat-weldable skin using a high-frequency welder, the back surface of the base material and The decorative material is placed on top of a high-frequency welder electrode device that has a needle-like electrode and an outer peripheral electrode that have the same shape as the surface of the skin and match the shape of the decorative material, facing an upper electrode portion of the same shape, with the lining facing upward. A bonding method using a high-frequency welder, in which a base material on which a pressure-resistant and heat-resistant pad material such as polypropylene and a skin are laminated is layered so that the skin contacts the lining, and the decorative material is welded to the skin. (2) A needle-like high-frequency welder electrode device, characterized in that a large number of needle-like electrodes are provided on a replaceable electrode substrate in the lower electrode portion of the high-frequency welder device. (3) A needle-shaped high-frequency welder electrode device according to claim 2, wherein an outer peripheral electrode is provided on the outer periphery of the needle-shaped electrode. (4) A wire-like high-frequency welder according to claims 2 and 3, in which an insulating material is filled between each needle-like electrode, and the tip of the needle-like electrode and the surface of the insulating material are on the same plane. Electrode device. (5) In claims 2 and 3, the needle electrode is an elastic needle electrode composed of an outer cylinder, a spring, and a needle tip, and there is insulation between each elastic needle electrode. fill with material,
A flexible needle-like high frequency welder electrode device with the tip of the needle slightly protruding from the surface of the insulating part.