METHOD AND APPARATUS FOR THE ULTRASONIC JOINING OF MATERIALS ACCORDING TO A PATTERN

• US 3,562,041 A
• Filed: 10/26/1967
• Issued: 02/09/1971
• Est. Priority Date: 10/26/1967
• Status: Expired due to Term

• Current Assignee: Cooper Lasersonics Incorporated
• Original Assignee: Clifford A. Robertson
• Inventors: Robertson, Clifford A.
• Application Number:
  US04/678,435
• Time in Patent Office: 1,202 Days
• US Class Current: 156/73.1
• CPC Class Codes: B29C 2793/00 Shaping techniques involving a cutting or machining operation
• CPC Class Codes: B29C 2793/0009 Cutting out
• CPC Class Codes: B29C 65/08 using ultrasonic vibrations non-plastics element to plastics elements B29C65/645
• CPC Class Codes: B29C 65/086 using a rotary anvil
• CPC Class Codes: B29C 65/7441 for making welds and cuts of other than simple rectilinear form
• CPC Class Codes: B29C 65/7443 by means of ultrasonic vibrations
• CPC Class Codes: B29C 65/749 Removing scrap deburring welded articles B29C37/04
• CPC Class Codes: B29C 66/1122 Single lap to lap joints, i.e. overlap joints B29C66/45, B29C66/472, B29C66/52272 take precedence
• CPC Class Codes: B29C 66/24244 forming a rectangle
• CPC Class Codes: B29C 66/43 Joining a relatively small portion of the surface of said articles B29C66/45 takes precedence
• CPC Class Codes: B29C 66/53461 joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
• CPC Class Codes: B29C 66/71 characterised by the composition of the plastics material of the parts to be joined welding bar compositions B29C65/125
• CPC Class Codes: B29C 66/729 Textile or other fibrous material made from plastics
• CPC Class Codes: B29C 66/7392 characterised by the material of at least one of the parts being a thermoplastic
• CPC Class Codes: B29C 66/73921 characterised by the materials of both parts being thermoplastics
• CPC Class Codes: B29C 66/8167 Quick change joining tools or surfaces
• CPC Class Codes: B29C 66/8226 Cam mechanisms; Wedges; Eccentric mechanisms
• CPC Class Codes: B29C 66/8227 using springs
• CPC Class Codes: B29C 66/832 Reciprocating joining or pressing tools B29C66/834 takes precedence
• CPC Class Codes: B29C 66/8322 Joining or pressing tools reciprocating along one axis
• CPC Class Codes: B29C 66/83411 : Roller, cylinder or drum types B29C66/83431 takes precedence; rollers, cylinders or drums moving relative to and tangentially to the parts to be joined B29C66/8362
• CPC Class Codes: B29C 66/83511 : jaws mounted on rollers, cylinders or drums
• CPC Class Codes: B29C 66/83521 : jaws mounted on bands or belts
• CPC Class Codes: B29C 66/83531 : jaws mounted on chains
• CPC Class Codes: B29C 66/92611 : by controlling or regulating the gap between the joining tools
• CPC Class Codes: B29C 66/93451 : by controlling or regulating the rotational speed, i.e. the speed of revolution
• CPC Class Codes: B29C 66/94 : by measuring or controlling the time
• CPC Class Codes: B29K 2067/00 : Use of polyesters or derivatives thereof, as moulding material
• CPC Class Codes: B29K 2105/0854 : in the form of a non-woven mat
• CPC Class Codes: B29K 2311/10 : Natural fibres, e.g. wool or cotton
• CPC Class Codes: B29K 2313/00 : Use of textile products or fabrics as reinforcement B29K2105/06 takes precedence

Abstract

A METHOD AND APPARATUS FOR THE ULTRASONIC JOINING OF MATERIALS ACCORDING TO A PATTERN, AT LEAST ONE OF WHICH CONTAINS A THERMOPLASTIC. THE ELEMENTS TO BE JOINED ARE ENGAGED BETWEEN AN ULTRASONICALLY VIBRATING MEMBER HAVING AN ELONGATED WORKING TIP AND A BACK-UP OR ANVIL MEANS HAVING A NARROW RAISED SURFACE CORRESPONDING TO THE DESIRED PATTERN. THE PATTERN IS FORMED BY MOVING THE BACKUP OR ANVIL MEANS AND THE MATERIALS CONJOINTLY RELATIVE TO THE WORKING TIP SO THAT THE MATERIALS ARE JOINED IN ACCORDANCE WITH THE PATTERN; AS SUCCESSIVE PARTS OF THE PATTERN SURFACE TRAVERSE THE WORKING TIP. THE ELONGATION OF THE WORKING TIP IS IN A DIRECTION ANGLED TO THE DIRECTION OF MOTION SO AS TO MINIMIZE THE AREA OF CONTACT AT ANY INSTANT OF TIME BETWEEN THE WORKING TIP AND THE RAISED PATTERN SURFACE.

Claims