Patent ID: 11938685
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A welding machine for synthetic resins comprising:
a main body comprising a work table provided at a middle part of the main body so as to protrude toward one side and having a horn withdrawal hole formed there through, and a support arm provided at an upper part of the main body so as to protrude upwardly from the work table;
an elevating support provided on the support arm, and comprising a screw mount part protruded from one side of an upper part of the elevating support, and an elevating cylinder configured such that a cylinder rod is provided therein so as to be withdrawn downwards from the elevating cylinder;
an ultrasonic generator comprising a vibrator, a booster and an ultrasonic horn, provided under the work table, rotated vertically by driving a motor, and configured to generate ultrasonic vibration through a circumferential surface of the ultrasonic horn;
a welder provided on the elevating support, being configured to be elevated and lowered by operation of the elevating cylinder, and configured to press fabrics and to generate frictional heat in cooperation with the ultrasonic horn so as to join the fabrics; and
a hot air generator provided on the elevating cylinder, and rotated rotatable leftwards and rightwards to provide hot air to the fabrics,
wherein the ultrasonic horn comprises:
a body connected to the booster; and
a disc-shaped head protruded outwards from a front end of the body so as to radiate the vibration through a protruding circumference of the head,
wherein the head comprises:

a vibration guide plate connected to the front end of the body by a connection curve part, provided in a disc shape having a greater diameter than a diameter of the body, and having front and rear curve parts respectively formed at circumferences of front and rear surfaces of the vibration guide plate so as to expand a thickness of the vibration guide plate; and
a vibration radiation part connected to the front and rear curve parts, and having a welding surface formed on an outer circumferential surface of the vibration radiation part.