Cutting device for tag web
AssigneeKabushiki Kaisha Sato
InventorTakehiko Miyamoto
Life of this patent
Estimating the term…
Abstract
Herein disclosed is a cutting device for use in a tag printer or the like, in which a tag web being fed is cut, while its cut position is continuously corrected by a rotary blade so that it can cut a variety of price tag webs having different cutting pitches or intervals. The rotary blade is rotated continuously through a differential gear mechanism by a first motor. Its cutting timing is suitably corrected by a second motor which is connected to the differential gear mechanism. Before the cutting operation, moreover, both the price tag web and the rotary blade are positioned at their respective reference positions. During cutting, information as to the positions of the tags on the web and the rotary blade are fed to a processor which adjusts the rotation of the blade for effecting cutting at the proper positions along the web.
Claims13
A cutting device for cutting tags, or the like, from a continuous web thereof, the device comprising:
- means for feeding a tag web along a path;
- a rotary blade positioned at a fixed location along the path and being rotatable about a rotary axis, and including a cutting blade projecting outwardly thereof and extending generally axially thereof, the cutting blade being placed for engaging the web as the rotary blade rotates past the web, and the cutting blade being for severing the web as the blade engages the web;
- a first motor for continuously rotating the rotary blade about its axis;
- a first power transmission mechanism connected to the first motor for transmitting the rotation of the first motor;
- a differential gear mechanism connected between the first power transmission mechanism and the rotary blade for rotating the rotary blade when the differential gear mechanism is operated through the first power transmission mechanism;
- timing control means for adjusting the rotation of the rotary blade, thereby to correct the cutting timing;
- the timing control means including a second motor operable independently of the first motor, a second power transmission mechanism connected between the second motor and the differential gear mechanism for operating the differential gear mechanism to change the rotation of the rotary blade;
- and
- reference position means including tag positioning means for positioning the tag web at a reference position thereof, and a rotary blade positioning means for positioning the rotary blade at a respective reference position thereof, the tag positioning means including a limit switch for detecting whether the tag web is in its reference position, and the rotary blade positioning means comprising a brake for braking the rotary blade when it is controlled.
A cutting device for cutting tabs, or the like, from a continuous web thereof, the device comprising;
- means for feeding a tag web along a path;
- a rotary blade positioned at a fixed location along the path and being rotatable about a rotary axis, and including a cutting blade projecting outwardly thereof and extending generally axially thereof, the cutting blade being placed for engaging the web as the rotary blade rotates past the web, and the cutting blade being for severing the web as the blade engages the web;
- a first motor for continuously rotating the rotary blade about its axis;
- a first power transmission mechanism connected to the first motor for transmitting the rotation of the first motor;
- a differential gear mechanism connected between the first power transmission mechanism and the rotary blade for rotating the rotary blade when the differential gear mechanism is operated through the first power transmission mechanism;
- timing control means for adjusting the rotation of the rotary blade, thereby to correct the cutting timing;
- the timing control means including a second motor operable independently of the first motor;
- a second power transmission mechanism connected between the second motor and the differential gear mechanism for operating the differential gear mechanism to change the rotation of the rotary blade;
- a first detector for detecting when a tag on the web attains a predetermined position along the path of the web;
- encoding means connected with the rotary blade for generating pulse signals in accordance with the rotation of said rotary blade;
- and a control circuit for receiving the signal of the first detector and the signals of said encoding means for controlling the rotation of the second motor for correcting the cutting timing of the rotary blade, the control circuit including an address counter for counting up the number of the pulse signals of the encoding means for generating a signal indicating the rotation position of the rotary blade, a drive circuit for controlling the rotation of the second motor when it is controlled, and a central processing unit for receiving both the counted-up number of the address counter and the signal of the detector for calculating a corrected value to control the drive circuit;
- and
- reference position means including tag positioning means for positioning the tag web at a reference position thereof, and a rotary blade positioning means for positioning the rotary blade at a respective reference position thereof, the rotary blade positioning means including a second detector for detecting whether the rotary blade is in its reference position, and a second brake for braking the first power transmission mechanism when it is controlled.
Dependencies are inferred from the claim text.