Welding device

Abstract

To provide a welding device that forms a single resin film into a tubular shape by welding an overlapped portion without providing heating members on both sides of the overlapped portion of the resin film.SOLUTION: A welding device comprises a placement surface on which a resin film is placed, a double portion where both sides of the resin film placed on the placement surface are folded and both end portions are overlapped, a heat insulating material sandwiched between the double portion and the resin film portion placed on the placement surface, and a heating member that heats the double portion from the side opposite to the heat insulating material with respect to the double portion.SELECTED DRAWING: Figure 4

Claims

1. The mounting surface on which the resin film is placed, A double portion formed by folding both sides of the resin film placed on the mounting surface and overlapping the ends, and an insulating material sandwiched between the resin film and the portion placed on the mounting surface, The system includes a heating member that heats and welds the double portion from the opposite side of the insulating material to the double portion, The aforementioned double portion is formed extending in one direction, The heating element is provided with a moving member for moving it in the one direction. The heating element has a roller that is pressed against the double portion and rotates due to movement by the moving element, The system includes a release plate positioned between the double portion and the roller, with a release agent applied to the double portion side. Welding device.

2. Viewed from the aforementioned one direction, the system comprises a pair of pressing members positioned on both sides in the direction along the surface of the mounting surface with the double portion in between, for pressing the release plate toward the mounting surface. The welding apparatus according to claim 1.

3. Viewed from the aforementioned one direction, the thermal insulation material is positioned on both sides in the direction along the surface, with the thermal insulation material in between, and comprises a pair of magnetic members that are magnets or magnetic metals, The pressing member is attracted to the magnetic member by magnetic force. The welding apparatus according to claim 2.

4. The mounting surface on which the resin film is placed, A double portion formed by folding both sides of the resin film placed on the mounting surface and overlapping the ends, and an insulating material sandwiched between the resin film and the portion placed on the mounting surface, The system includes a heating member that heats and welds the double portion from the opposite side of the insulating material to the double portion, The aforementioned double portion is formed extending in one direction, The heating element is provided with a moving member for moving it in the one direction. The heating element has a roller that is pressed against the double portion and rotates due to movement by the moving element, The resin film comprises a substrate and a surface layer formed on the surface of the substrate. The system includes a release member that, while being placed on the mounting surface and unfolded, peels off a portion of the surface layer of the resin film from the substrate by moving the moving force of the moving member, such that the pair of substrates are in direct contact at the double portion where both sides of the resin film are folded and the ends overlap. Welding device.

5. The peeling member is a rotating polishing member having a polishing portion that rotates in a direction that stretches the resin film, which is placed on the mounting surface and unfolded, to peel the surface layer from the substrate. The welding apparatus according to claim 4.

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