High-frequency welding apparatus for bonding corner of air mattress

A high-frequency welding apparatus for bonding a corner of an air mattress configured to adhere a shape maintenance member to each corner of the air mattress in which a sealing tape is adhered to edges of an upper part and a lower part configured to face each other, the high-frequency welding apparatus comprising:

• a housing equipped with a high-frequency oscillator installed therein;
• an electrode plate disposed at one side of the housing such that a positive power supply is connected to and in the electrode plate, configured to move a horizontal direction so as to press the shape maintenance member configured to surround the corner of the air mattress;
• a surface plate disposed to collinearly face the electrode plate with the shape maintenance member interposed therebetween, and configured to support the pressed shape maintenance member;
• and
• an electrode pushing block and a surface plate pushing block formed of a metal and fixed to front ends of the electrode plate and the surface plate, respectively, to apply high-frequency pressure to the shape maintenance member and to guide a melt of the shape maintenance member, the upper part and the lower part to be injected into a space between the edges of the upper part and the lower part adhered to the sealing tape,
• wherein a plurality of pushing protrusions and a plurality of guide inflow grooves are alternately formed at corresponding positions on facing surfaces of the electrode pushing block and the surface plate pushing block, the pushing protrusions come into first contact with the shape maintenance member and press contact areas during high-frequency pressing so that the melt of the shape maintenance member, the upper part and the lower part flows into the guide inflow grooves at sides of the pushing protrusions, and the guide inflow grooves guide the melt to be injected into the space formed between the edges of the upper part and the lower part.