JPH02248235A - Sticking method for mersheet - Google Patents

Abstract

PURPOSE:To surely melt-stick a mersheet along the uneven shape of a panel even when heating temp. is made low by melt-sticking the mersheet on the panel by a high frequency heating coil and also pressing the mersheet on the panel by an elastic and deformable pressing member. CONSTITUTION:A mersheet 9 is allowed to butt on one surface 11 of a panel 4 constituting one part of a vehicle body. A high frequency heating coil 1 approaches the other surface 12 of the panel 4 to heat this panel 4. Simultaneously or just after it, the mersheet 9 is pressed and melt-stuck on the panel 4 by an elastic and deformable pressing member 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is mainly directed to a vehicle body component panel such as a dash board lower panel, which is attached to a vehicle body component panel to prevent the transmission of noise and vibration to achieve quietness in the interior of the vehicle body. This article relates to a method for stretching Melsheet.

[Conventional technology]

In the conventional Melsheet installation method, the Melsheet is applied to a predetermined part of the panel, and in order to soften the Melsheet so that it follows the uneven shape of the panel, the entire panel is heated in a near-infrared oven at a high temperature for a relatively long length. It was heating up for an hour. There was also a method of using an atmospheric furnace, but this required a relatively long heating time.

(Problems to be Solved by the Invention) In the conventional tensile force method for Melsheet, - As mentioned above, in order to soften Melsheet, it was necessary to heat it at a high temperature and over a long period of time (for example,
'C for 2 minutes).

Furthermore, since it takes a considerable amount of time to air-cool the panel, there is a problem in that industrial efficiency is reduced.

Additionally, the parts without Melsheet were also heated, wasting fuel costs.

Therefore, an object of the present invention is to solve such problems.

(Means for Solving the Problems) In order to solve the above-mentioned objects, the present invention abuts a Melsheet on one side of a panel constituting a part of the vehicle body, and brings a high-frequency heating coil close to the other side of the panel. The panel is heated, and at the same time or immediately after the heating, the Melsheet is pressed and fused to the panel using an elastically deformable pressing member, and
In addition to this configuration, a lining plate is brought into contact with the Mel sheet, the lining plate is welded to the panel by spot welding, and the whole is heated in a paint drying oven to bond the lining plate, Mel sheet, and panel together. Unify.

[For production]

The Melsheet was brought into contact with a predetermined part on one side of the panel, and the predetermined part on the other side of the panel was heated by a high-frequency heating coil, and at the same time, the Melsheet was pressed against the J2 panel by an elastically deformable pressing member to fuse it. Therefore, Melsheet easily follows the uneven shape C of the panel even if the heating temperature is low.

In addition, since only the contact area of melter 1- can be locally heated, thermal efficiency is good.Also, if the melter is first fused to the panel as described above, and then the lining board is stacked, Melsheet does not shift position.

〔Example〕

The present invention will be described below based on the illustrated embodiment.

FIG. 1 shows an example of a high-frequency heating coil used in the present invention. As shown in the figure, the high-frequency heating coil is a spiral-shaped Ctern plane coil with an outer diameter of approximately 5 to 12+.
ms, preferably about 81 sI□q pipes. Both ends 2.2 of the coil I are connected to an oscillator 3. The frequency of the oscillator 3 is approximately 3 KHz
and has a transformer. Further, the coil l is insulated from a panel 4 (see FIG. 5) constituting a part of the vehicle body, which is an object to be heated, and is buried in an insulator 5 so as to follow the shape of the panel 4. . Note that the coil 1 may be wrapped with glass tape or further coated with Teflon, and a part of the coil 1 may be fixed with an Oaken core.
A coolant such as water flows inside the coil 1, and the coolant cools the coil 1.

FIG. 2 shows a pressing member used in the present invention, and the pressing portion 4A6 is made of foamed urethane, elastically deformable heat-resistant rubber, or heat-resistant plastic, and has an integrally dense skin on its outer surface, and Made of the same material. As a result, the asphalt-based Melsheet 9 is pressed against the panel 4. Further, in order to make the contact surface 7 of the pressing member 6 follow the uneven shape of the panel 4, uneven portions 8 that follow the above-mentioned uneven shape are formed on the corresponding contact surface 7. This uneven part 8
In order to form this, an accurate uneven shape can be easily obtained by performing foam molding using the abutting portion of the target panel 4. Further, in order to prevent the uneven portions 8 from losing their shape, the corresponding contact surface 7 is formed densely with the above-mentioned dense skin portion.

As shown in FIG. 3, the method for stretching the Mel sheet 9 according to the present invention involves fixing or placing the panel 4 on a support stand 10 or the like, and applying the Mel sheet 9 to a predetermined portion of one surface 11 of the panel 4. The coil l is brought into close contact with the predetermined portion of the other surface 12 of the panel 4. The gap T between panel 4 and coil 1 is approximately 3
~10mm, preferably 51XI11, zero order;
The pressing member G lightly presses (pre-pressures) the Mel sheet 9, and as shown in FIG. , -1 The Melsheet 9 is pressed onto the panel 4 by the pressing member 6 (main pressing) to fuse it. At this time, the time of the above-mentioned high frequency heating may be several seconds, and the fusion temperature is about IfO°C ~
The temperature may be set within the range of 180°C, but it is preferably around 130°C. In addition, it is sufficient for the main pressurization to be less than 2g/c+a.Then, the panel 4 is air-cooled and the 5th TA
As shown in FIG. 2, the Melsheet 9 is integrally fused and stretched on the panel 4.

FIG. 6 shows another embodiment 1. After completing the process of the previous example, the melt sheet 9 is fused in the state shown in FIG. Lining plate 13 called steel plate
and at the end edge 14.14 of the lining plate 13 or at an appropriate position (preferably, a through hole is provided in the Mel sheet in advance and a convex spot weld is provided in the lining plate 13). is welded to the panel 4 by spot welding, and the whole is heated in a drying oven (so-called main heating) for the subsequent painting of the whole +ljl, so that the lining board 13, Mel sheet 9, and panel 4 are integrated.

It should be noted that the present invention is not limited to the above-described embodiments, but may be freely modified without departing from the gist of the present invention.

For example, as a method of continuously stretching Mel sheet 9,
The coil 1 and the pressing member 6 may be installed at fixed positions on the line and the panel 4 may be moved, or conversely, the panel 4 may be moved.
The coil and the pressing member 6 may be moved while being fixed.

In addition, in Figure 5, panel 4 is the dash board lower panel, and the center Mel sheet 9 blocks engine noise, and the left and right melters 19.9 block noise from the tires. Melsheet 9 may be applied over substantially the entire surface of the sheet.

〔Effect of the invention〕

Since the present invention is configured as described above, it achieves the remarkable effects described below.

Melsheet 9 is fused to panel 4 using high-frequency heating coil 1, and Melsheet 9 is pressed against the panel by elastically deformable pressing member 6. Therefore, it is useful for preliminarily fixing the Mel sheet 9 to prevent it from shifting on inclined or vertical surfaces such as the lower panel of the dash board or the left and right side parts of the car body. In addition, thermal efficiency is good because the contact area of Melsheet 9 can be locally heated.Furthermore, since it is high frequency heating, it only needs to be heated for a very short time (several seconds), and since the heating temperature is low, no air cooling time is required. This improves work efficiency.Furthermore, since the heating temperature is low and short, the panel 4
is less likely to rust.

In claim 2, since the lining board 13, the Melsheet 9, and the panel 4 are integrated, a significant soundproofing effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a sectional plan view of the high frequency heating coil, Fig. 2 is a sectional view of the pressing part 10A, Figs. 3 and 4 are sectional views showing an embodiment of the present invention, and Fig. 5 is a plan view of the panel. Figure 6 is another real hil! It is a sectional view showing an example. 1... High frequency heating coil, 4... Panel, 6...
Pressing part 10A, 9... Melsheet, 11... - side, 1
2...Other surface, 13...Lining board, 14...Edge portion.

Claims (1)

[Claims] 1. Mel sheet 9 is brought into contact with one side 11 of a panel 4 constituting a part of the vehicle body, and the high frequency heating coil 1 is brought close to the other side 12 of the panel 4 to heat the panel 4, A method for stretching Melsheet, which is characterized in that, at the same time as or immediately after the heating, the Melsheet 9 is pressed onto the panel 4 by an elastically deformable pressing member 6 and fused. 2. Melsheet 9 is brought into contact with one surface 11 of a panel 4 that constitutes a part of the vehicle body, and the high frequency heating coil 1 is brought close to the other surface 12 of the panel 4 to heat the panel 4, and at the same time or immediately after the heating. Next, the Mel sheet 9 is pressed against the panel 4 by the elastically deformable pressing member 6 to fuse it, and then the lining plate 13 is brought into contact with the Mel sheet 9, and the lining plate 13 is spot welded. A method for installing Mel sheet, which is characterized in that the lining board 13, Mel sheet 9, and panel 4 are integrated by welding to the panel 4 and heating the whole in a paint drying oven.