Transport device for an electrical resistance welding machine
US4162382A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1977 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Oct 31, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/0876
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A transport device for use with an electrical resistance welding machine producing longitudinal seams at workpiece bodies or the like which, prior to reaching the welding rolls of the machine, are transported at a desired welding speed by means of the transport device. The transport device comprises at least one endless chain revolving above the workpiece bodies to be transported and having workpiece body-engaging members in the form of pawls hingedly connected in spaced relationship with the endless chain. Each pawl has oppositely extending pawl arms, of which one arm possesses a contact or impact surface intended to bear against the end of a workpiece body engaged thereby and the other arm possesses a control surface which bears against a guide rail stationarily arranged above the lower chain run of the endless chain which revolves over at least two sprocket wheels. The guide rail is constructed at both ends of a linear section thereof so as to have two sections extending in an arc-shaped or curved configuration at the region of the sprocket wheels in such a manner that upon arrival of a pawl in a workpiece feed plane the pawl arm having the contact surface is pivoted in a contro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.