Patent TW-340826-B (TW)
Title: Computer controlled labelling machine for applying labels including stretch labels and tactiilely sensible indicia on articles and computer controlled labelling machine for carrying out the same
Inventor: BRIGHT LYN E
IPC: B65C9/40
Filed: 1996-07-05
Granted: 1998-09-21
Abstract: A sort of applying stretched labels on the surface of an article, being the method used on a computer-controoled labelling system, having the system a computer; carrier, including a turret and a tray for holding the article, having the article a circumference of any shape and surface circumference diameter showing an area of maximum diameter and one or more adjacent areas of smaller diameters, and a device for sensing corners, rotation and speed of the turret and the tray, while having the article to be labelled along a fixed route defined by the carrier of the article; as well as label stretcher and applier, including a cutter for curling and cutting an elastic piece of the plate from a material, and a rotary vacuum cylinder for supporting the material piece; including the method: provision of an elastic matgerial with a front end and a tail end, between which there is an unstretched length, which is shorter than the surface of the article coated by the piece; stretching of the piece for additional distance between the front and the tail end, so that the stretched piece is of a larger or equal length to that of the surface of the coated piece, and making the stretched piece be loosened and face the unstretched length and in case of restoration, the size of the circumference of the article is more than the unstretched length while preventing it from being reset to the unstretched length; by means of fast dry glue on the front end for having the front end of the stretched piece be attached to the article, with application of the stretched piece onto the piece to coat the area of maximum diameter and the adjacent areas; with the piece being stretched wrapping the article for coating the area of maximum diameter of the adjacent areas and by applying fast dry glue before loosening the stretched piece onto the tail end or area beneath it, for fixation of the tail end onto the front end or the article; and controlling the stretching of the piece and application by means of the following: having the carrier, the labelling device and the static and mobile mechanical property of the label be characterized, including the slastic label the turret and the physical tray size with the geometric property, nature of position of each of the turrets and the tray being sensed, rotary direction property of each of the turrets and the trays, speed property of each of the turrets and the trays, geomatric profile of the article, including an identical size of the article, a circumference property of the applied label, property for description of the label with respect to the application position, and description of property of movement of article to reach operation of the label; feeding of the article along the path; detection of the feeding speed; calculation of the control values for controlling the carrier and the label stretcher, including each of the cutters, rotary vacuum cylinder, turrets, and the tray, designated direction and designated rotation speed; generation of control signals corresponding the calculated control value; application of the control signals onto the carrier, and application of the label stretcher for the label to be stretched to a designated volume and be applied on the correct position on the article; and enough stretching, so that, when the applied stretching force is dropped, the part of parts covering the adjacent area or areas when tenioned would be attached tightly to the adjacent area or areas, or close enough to have the piece be heated and shunk onto said area or areas.