Embroidering and laser processing machine

Details Embroidering and laser processing machine Embroidering and laser processing machine

1996-09-11

1999-06-29

Nerbun, Peter

Sewing

Special machines

Pattern controlled or programmed

11247006, 112155, 21912167, 21912182, D05B 2100, B23K 2608

Patent

active

059153164

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

This invention relates to laser processing machines and also to sewing machines with a laser processing function for performing processing such as cutting and engraving on a work by irradiating a work with a laser beam.
Japanese Patent Publication No. 6-33550 shows an embroidering machine with a plurality of sewing heads and laser heads each mounted on each sewing head. The embroidering machine further comprises an embroidering frame which can hold a cloth (or work). The embroidering frame is controlled for movement in X- and Y-axis directions according to drive data, while each laser head irradiates a laser beam to cut the cloth.
The above prior art embroidering machine has the following disadvantages. embroidering. The production of the drive data requires considerable man-hours. and the cloth (or work) to facilitate such operations as replacement of cloth for the embroidering frame. This means that no means for protecting the operator from a laser beam is provided between the laser head and the cloth. generator is relatively expensive, and an increase of the number of laser heads inevitably increases the cost. irradiated in the close vicinity of the sewing head. This means that a throat plate covering a shuttle receives the laser beam at a position below the sewing head. This may result in scorching of a lower thread wound on a bobbin in the shuttle by the heat of the laser beam or in adverse effects on the throat plate or the shuttle by the heat of the laser beam. plurality of laser heads that an imperfect cut is produced by any of the laser heads, the cutting operation by that laser head has to be performed afresh. In such a case, it is necessary to return the work frame (or embroidering frame) by the frame return control to a point from which the cutting is to be performed afresh, and make cutting afresh from that point to the point from which the work frame has been returned.
In this case, however, with a laser head which has made a proper cutting, the laser beam is overlappingly irradiated onto the cut portions between the cutting restart point and the work frame return point. In this case, no problem arises so long as the cloth is perfectly cut by the laser beam. However, when only the upper one of two overlapped cloths is to be cut, the repeated cutting may result in the cutting or scorching of the lower cloth which should not be cut. a plurality of laser tubes of a laser generator is made constant through feedback control according to a drive signal provided from a laser controller. However, the system for realizing the feedback control is expensive, thus inevitably leading to a cost increase of the embroidering machine. material of the work or like conditions, it is necessary to increase the laser beam output. With an increased output of the laser beam, however, a cut (particularly edges) of work may excessively be burnt, thus resulting in an unclean finish. Besides, while it is necessary to set an increased laser beam output to cut a work having a large thickness as noted above, the output (or capacity) of the laser generator is limited. cylindrical guide is used to ensure safety. For redirecting a laser beam, a mirror is used. The redirection of the laser beam requires accuracy. This means that the mounting angle of the mirror has to be finely adjusted. This operation is very difficult and time-consuming. focal point of the lenses. For example, this is required when laser processing two overlapped works to cut the upper work first and then cut the lower work, or when varying the width of scorching by the laser beam for providing a scorch pattern (or mark) on the surface of leather or like work.
Heretofore, in such cases, the focal point of a lens has to be adjusted whenever it is necessary to do so by manually vertically moving a cylindrical member after loosening bolts. This operation is very time-consuming.


OBJECTS OF THE INVENTION

The invention was made in order to solve the above problems, and it has an object of providing a laser processing machine and an

REFERENCES:
patent: 4752668 (1988-06-01), Rosenfield
patent: 5262612 (1993-11-01), Momany et al.
patent: 5293024 (1994-03-01), Sugahara et al.
patent: 5449881 (1995-09-01), Nakata et al.
patent: 5537939 (1996-07-01), Horton
patent: 5555827 (1996-09-01), Tanabe
patent: 5607606 (1997-03-01), Mori et al.

Affiliated with

Also associated with

Rating

Embroidering and laser processing machine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Embroidering and laser processing machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Embroidering and laser processing machine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1366445