JP3035749U - Earth plate movable high-frequency heating device - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the welding of sheets with attached parts 12 (for example, eyelets and rope loops) of large membrane structures. [Structure] The ground-side power supply line 11, which is a component of the high-frequency heating device 2, is structured to be movable in an expandable and contractible manner, and the ground plate 8 is fixed to the tip thereof.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention facilitates the production and processing of large membrane structures such as tent sheets.

[0002]

[Prior art]

 In the conventional high frequency heating device, as shown in FIG. 1, the high frequency generating device 2 and the press device cylinder 3 are mounted on the outer frame 1 to suspend the beam, and the metal plate of the lower electrode 9 is placed on the table 7.

The power supply line 10 from the high frequency generator 2 is connected to the bonding upper electrode 5 mounted on the press device cylinder 3 via the insulator 4, and by the vertical movement of the press device cylinder 3, the bonding upper electrode 5 and the outer frame are connected. The earth plate 8 attached to the earth side power supply wire 11 attached to the press machine cylinder 3 grounded to 1 holds down the welded material 6 (vinyl sheet), and through the lower electrode metal plate 9 on the table 7 below it. A high frequency circuit is configured.

[0004]

[Problems to be solved by the device]

 Since the ground plate 8 is fixed to the ground-side power supply line 11, the effective welding width is restricted from the inside to the inside of the left and right ground plates 8.

This means that when welding a sheet having accessory parts 12 (for example, eyelets or rope loops) of a large membrane structure, if the accessory part 12 is below the earth plate 8, the part is burned. In some cases, such as sparking, it could not be welded. Therefore, in order to perform welding, it is necessary to wind the sheet so that the accessory 12 is avoided from below the ground plate 8, which is a difficult task.

In order to solve these inconveniences, it is necessary to make the earth plate 8 movable and, if the welded object 6 has an accessory 12 attached thereto, have a structure that avoids the accessory 12. .

[0007]

[Means for Solving the Problems]

 As shown in FIG. 2, the earth side power supply line 11 attached to the press machine cylinder 3 is made to extend and contract, and the earth plate 8 is fixed to the tip thereof.

[0008]

[Action]

 The ground-side power supply line 11 is movable to the width set by the ground-side power supply line 11 so that the ground plate 8 fixed to the tip of the ground-side power supply line 11 can be expanded and contracted.

[0009]

【Example】

 As shown in Fig. 3, when welding the sheets to which accessory 12 (eyelet, rope thread, reinforcing cloth) is attached, the width to avoid accessory 12 is determined by ground-side power supply line 11. For example, the welding position of the material 6 to be welded is aligned with the upper electrode 5 for adhesion. At this time, if the accessory 12 of the object to be welded 6 hits under the earth plate 8, determine the position where the accessory 12 avoids the earth plate 8 and move it to the side of the upper electrode 5 for adhesion or move it far away. Decide Next, the ground plate 8 is fixed to the tip.

Next, when the power of the high frequency generator 2 is turned on, the high frequency flows from the power supply line 10 to the upper electrode 5 for adhesion, and the sheet is pressed by the downward movement of the press device cylinder 3, and the lower electrode metal plate 9 on the table 7 is pressed. The welding is completed by the upward movement of the press device cylinder 3. At this time, since the earth plate 8 avoids the accessory parts 12 of the seat, it can be easily welded without burning or sparking.

[0011]

[Effect of the invention]

 The width between the ground plate 8 and the bonding upper electrode 5 is arbitrarily moved by making the ground side power supply line 11 expandable and contractable and fixing the ground plate 8 to the tip thereof.

This effect not only facilitates the welding of the sheets with the accessory 12 but also simplifies the work of winding and welding the sheet in order to avoid the accessory 12, and reduces the number of work steps. Also, the workability is improved and the product reliability is increased.

As shown in FIG. 4, the width between the earth plate 8 and the upper electrode 5 for adhesion can be arbitrarily moved, so that conventionally, only parallel electrodes (welding type) having a maximum width of 100 mm can be welded. What did not exist could be welded even at 200 to 400 mm according to the moving width of the ground side power supply line 11.

[Brief description of the drawings]

FIG. 1 is a conventional high-frequency heating device.

FIG. 2 is a structural diagram of a ground side power supply line 11.

FIG. 3 is an example of movement of a ground side power supply line when an accessory 12 is provided.

FIG. 4 is a diagram of parallel electrodes.

[Explanation of symbols]

 1 Outer Frame 2 High Frequency Generator 3 Press Machine Cylinder 4 Insulator 5 Adhesive Upper Electrode 6 Welding Material 7 Table 8 Earth Plate 9 Lower Electrode Metal Plate 10 Power Supply Line 11 Earth Side Power Supply Line 12 Accessories

Claims (1)

[Utility model registration claims] 1. A high-frequency heating device comprises a high-frequency generator, a pressing device, a power supply line, an insulator, an upper electrode, and an earth side plate (hereinafter referred to as an earth plate) having a ground capacity ten times larger than that of the lower and upper electrodes. It is configured. A high-frequency heating device characterized in that the earth plate is movable.