Control method for a tufting machine

• US 4,267,787 A
• Filed: 04/16/1980
• Issued: 05/19/1981
• Est. Priority Date: 06/29/1979
• Status: Expired due to Term

• Current Assignee: Tapistron International, Inc.
• Original Assignee: Tsutomu Fukuda
• Inventors: Fukuda, Tsutomu
• Primary Examiner(s): Hunter, H. Hampton
• Application Number:
  US06/140,833
• Time in Patent Office: 398 Days
• Field of Search: 112/266.2, 112/79 R, 112/79 A, 112/272, 112/277, 112/266.1, 112/262.1
• US Class Current: 112/475.23
• CPC Class Codes: D05C 15/14 Arrangements or devices for holding or feeding the base material D05C15/26 takes precedence
• CPC Class Codes: D05C 15/18 Thread feeding or tensioning arrangements
• CPC Class Codes: D05D 2205/16 Display arrangements

Abstract

A method of controlling a tufting machine including preestablishing a selected stitch number and a selected yarn feed length for a predetermined unit feed length of ground fabric, determining stitch number and yarn feed length for the unit feed length of ground fabric by means of measured values respectively obtained from a ground fabric feed detector, a yarn feed detector and a stitch number detector, comparing the measured values with the preestablished stitch number and the preestablished yarn feed length, and automatically controlling the rotation speeds of a spiked roller and a yarn roller respectively to correct the ground fabric feed and the yarn feed to the preestablished values whenever the measured values depart from a predetermined tolerance from the selected values.

Claims

1. A method of controlling a tufting machine comprising:

preestablishing a selected stitch number and a selected yarn feed length for a predetermined unit feed length of ground fabric;

determining stitch number and yarn feed length for the unit feed length of ground fabric by means of measured values respectively obtained from a ground fabric feed detector, a yarn feed detector and a stitch number detector;

comparing the measured values with the preestablished stitch number and the preestablished yarn feed length; and

automatically controlling the rotation speeds of a spiked roller or a yarn roller respectively to correct the ground fabric feed and the yarn feed to the preestablished values whenever the measured values depart from a predetermined tolerance from the selected values.