A method of producing a golf ball applies ultrasonic welding on two half shells to form at least one intermediate layer, at least one cover layer, or at least one intermediate layer and at least one cover layer. The ultrasonic welding may include pressing the two half shells together, delivering a high power electrical signal to a welding stack, and converting the high power electrical signal at the welding stack to ultrasonic energy. The converting may include converting the high power electrical signal into a mechanical vibration, modifying an amplitude of the mechanical vibration to generate a modified mechanical vibration, and applying the modified mechanical vibration to an interface of the two half shells to weld them together ultrasonically. Aspects also relate to golf balls, or one or more layers thereof, made using ultrasonic welding.

A system includes a first horn, a first ultrasonic transducer, a second horn, a second ultrasonic transducer, a memory, and a controller. The first horn includes a first part-interfacing surface. The second horn includes a second part-interfacing surface and is positioned relative to the first horn such that a part to be welded can be positioned between the first and second part-interface surfaces. The controller is configured to cause a first ultrasonic energy to be applied through the first horn via the first transducer to cause the first part-interfacing surface to vibrate, cause the first horn to move in a first direction at a first time, cause a second ultrasonic energy to be applied through the second horn via the second transducer to cause the second part-interfacing surface to vibrate, and cause the second horn to move in a second direction at the first time.

The method of bonding a first object (1) to a second object (2) uses a connector, the connector having a first sheet portion and a second sheet portion (32). The first sheet portion has at least one outwardly protruding first attachment portion (33), and the second sheet portion has at least one outwardly protruding second attachment portion (34). The connector (3) further has a spacer between the first and second sheet portions. For bonding, the first and second objects (1, 2) and the connector (3) are positioned relative to each other so that the connector is placed between the first and second objects. Then the first and second objects (1, 2) are pressed against each other while mechanical vibration energy impinges on the first and/or second object until a first flow portion of thermoplastic material of the first object in contact with the first attachment portion(s) and a second flow portion of thermoplastic material in contact with the second attachment portion(s) become flowable allowing the respective attachment portions (33, 34) to be pressed into material of the first and second object, respectively. After re-solidification of the flow portions, a positive-fit connection between the first and second objects via the connector results. The spacer defines a width (w) of a gap between the first and second objects (1, 2) after bonding.

A sonotrode includes multiple layers of a material melted to one another to form a structure. The structure provides a base that has an attachment feature that is configured to operatively secure to an ultrasonic converter. The structure includes a shaft that extends from the base to a terminal end that provides a working surface that is configured to selectively engage a workpiece. The structure has at least one shaft that includes a first shaft that extends from the base to a first terminal end that provides a first working surface that is configured to selectively engage a workpiece. The first shaft is integrally formed with the base from the multiple layers to provide an unbroken, monolithic construction.

In a method for producing a rail-shaped hybrid component, in particular for an aircraft or spacecraft, a second rail component made of a titanium material is positioned on a first bar of a first profile rail that is made of a carbon-fiber reinforced plastic material and moved in an advancing direction, in a fixed position relative to the first profile rail, such that a bar portion of the first bar is arranged between a first connecting portion of the second rail component and a second connecting portion of the second rail component, and the second rail component is cohesively connected to the first profile rail. Furthermore, the hybrid component has a first profile rail made of a carbon-fiber reinforced plastic material and a second rail component made of a titanium material.

An ultrasonic bonding apparatus includes a stage having an upper surface on a plane defined by a first direction and a second direction crossing the first direction, a head part spaced apart from the stage in a third direction crossing the first direction and the second direction, a first ultrasonic generator which vibrates in a direction parallel to the first direction, and a second ultrasonic generator which vibrates in a direction parallel to the third direction, where each of the first ultrasonic generator and the second ultrasonic generator may be coupled to the stage or the head part.

Methods and systems for no-glue pocketed spring unit construction. Rows of pocketed springs, preferably arranged into modules of more than two pocketed springs surrounding a central hole, are ultrasonically welded together when paired vibrating probes and anvils press layers of pocketed spring fabric from the rows of pocketed springs together and a welding pulse is transmitted to the vibrating probe.

The present invention concerns an apparatus for ultrasonic welding of at least two material webs comprising a processing sonotrode which can be excited with an ultrasonic vibration, a processing counterpart tool and a material web guide which is so designed that the material web can be passed through between the processing sonotrode and the processing counterpart tool, in which there is provided a device for heating at least one material web prior to the welding operation. To provide an ultrasonic welding apparatus which avoids the stated disadvantages and which nonetheless provides a high processing speed it is proposed according to the invention that the device for preheating at least one material web has a preheating sonotrode which can be excited with an ultrasonic vibration.

An ultrasonic systems and methods for sealing complex interfaces or for metal forming. Complex interfaces, such as a Gable top, have multiple and a variety of layers across the interface, or an oval or round spout having a complex geometry. An example system includes two ultrasonic horns arranged opposite a gap between which the interface is provided. The frequency and phase of the ultrasonic energy are synchronized as the energy is applied simultaneously while the interface is pressed between a jaw and the energy is applied to both sides of the interface. Another example system includes two ultrasonic transducers synchronized in frequency and phase and used to vibrate a horn mechanically to facilitate a sealing or welding interface or to assist in a metal-forming process.

An ultrasonic welding system. The system includes an ultrasonic transducer assembly having a horn and a first transducer and a second transducer arranged to impart ultrasonic energy into the horn. The horn has a first part-interfacing surface and a second part-interfacing surface opposite the first part-interfacing surface. An actuator assembly is operatively coupled to the ultrasonic transducer assembly and configured to cause rotation of the horn. A controller is configured to: cause the actuator assembly to rotate the horn so that the first part-interfacing surface applies the ultrasonic energy to a first part along an entire length of the first part-interface surface while a first ultrasonic energy is applied through the horn via the first transducer to cause the first part-interfacing surface to vibrate back and forth along its entire length as the first ultrasonic energy is applied by the first transducer to the horn.