Method and apparatus for controlling welding temperature of wrapping material
US6458228B1 · kind B1 · utility
10Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 2001 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/93431
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hammer (14) coupled to an ultrasonic vibrator (15) is actuated to apply vibrations to a wrapping material (10) with irregularities in composition and thickness so that the wrapping material (10) can be fusion-bonded with uniform strength. The surface temperature of the wrapping material (10) measured by an infrared sensor (30) is sent to a control unit (22), and a controller (23) sends a control signal (24) to a variable-voltage source (25). The variable-voltage source (25) controls the amplitude of vibrations of the hammer (14) by temperature feedback to make uniform the generation of heat in the wrapping material (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.