JPS5815231B2 - Laser glass glass sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention fuses cut edges of glass fiber fabric to prevent fraying and fuzzing of the fiber structure.
The present invention also relates to a device for cutting glass fiber fabric by melting it without discoloring the glass fibers due to heat.

Conventionally, glass fiber fabrics have been cut mechanically using a cutter, but this method has the disadvantage that the cutter blade comes into direct contact with the fabric, resulting in fraying and fuzzing of the fabric structure.

Furthermore, in this method, the edges must be folded and sewn as a treatment after cutting, but the glass fiber fabric has poor abrasion resistance, so it has the disadvantage that the bent portions will wear away in a short period of time.

After cutting, the method of fusing the edges using a high-frequency sewing machine or cutting the edges using a gas burner results in a wide fused area due to the high thermal conductivity of glass fibers, which does not make the edges smooth and may cause discoloration of the fibers. There was a drawback.

Furthermore, in the method of focusing a laser beam and irradiating it to the glass fiber fabric to fuse it, the cutting speed can be increased if the diameter of the focused laser beam is small, but it is difficult to sufficiently fuse the cut edges. I can't.

On the other hand, when the beam diameter is large, not only the cutting speed becomes slow, but also the fusion area becomes too large, causing problems such as irregular fusion and discoloration of the fibers.

As a result of various studies, we found that in the method of irradiating glass fiber fabric with a laser beam to fuse it, we decided to irradiate the glass fiber fabric with a laser beam focused to an extremely narrow beam diameter and fuse it, and at the same time install it below the fabric. It was concluded that it is best to fuse the cut ears using a laser beam reflected by a reflective mirror.

In other words, the gist of the present invention is to irradiate a glass fiber fabric with a laser beam focused to an extremely narrow beam diameter to melt it, and at the same time, the laser beam reflected from a reflecting mirror installed below the fabric is applied to the fabric. This is a fusing device for glass fiber fabric, which is characterized by irradiating the back side and fusing the cut edges in a desired minute width.

To summarize the present invention, laser light focused into a small beam diameter has an extremely high energy density and can instantly melt and cut glass fiber fabric.

At the same time, a reflecting mirror provided below the fabric reflects the laser beam that has passed through the fabric back onto the fabric to fuse the cut edges.

Moreover, by changing the curvature and position of the reflecting mirror, the cut portion can be fused to any minute width depending on the type, quality, thickness, use, etc. of the glass fiber fabric, which is a drawback as mentioned above. It can be cut without causing any fraying of the tissues from the ears, fuzzing, or discoloration of the fibers as described above, and furthermore, the folding eliminates the need for post-processing such as sewing.

Next, an apparatus for carrying out the present invention will be explained with reference to the drawings.

In FIG. 1, a glass fiber fabric 1 to be cut is fed to a cutting area by a pair of guide rollers 2, 2'.

The guide rollers 2, 7 and 9, 9' communicate with each other to maintain a constant tension so that the glass fiber fabric 1 does not sag or wrinkle within the cutting area.

A laser beam irradiation device 3, a laser beam irradiation tube 4, a pair of rollers 5, and a reflecting mirror 6 are arranged in the vertical axis direction of the fabric (the direction in which the fabric is fed), the feeding rail 7, and the horizontal axis direction (the direction in which the fabric is fed). It is installed on the feed rail 8 (in the right angle direction), and the vertical and horizontal movement speed and amount of movement, as well as the fabric feeding speed, can be set arbitrarily, and it can be cut into complex shapes using numerical control and computer control. be able to.

In FIG. 2, a laser beam 10 taken out from a laser oscillator (not shown) is focused by a convex lens 11, and is irradiated onto the fabric 1 at a focal point 12, instantly fusing it.

Then, the laser beam that has passed through is irradiated onto the fabric 1 again by the reflecting mirror 6, and the cut edges are fused together.

Since the reflecting mirror 6 is movable in the vertical direction and can be replaced with a mirror having a different curvature, the diameter 15 of the reflected beam can be changed arbitrarily, and the welding can be performed at any minute width such as the cut edge. can.

A pair of rollers 5 is provided to prevent the fabric from sagging and shifting from the focal position of the laser beam.

Further, compressed air is sent from the air supply port 13, and air is blown out from the blow-off nozzle 14.

In order to prevent the glass fiber fabric that was melted by the laser beam from being fused again, the molten glass remaining between the melted parts is blown away, and at the same time, dust and glass fiber fragments enter and damage the lens 11. Preventing the problem.

The cut fabric is sent out from the cutting area by a pair of guide rollers 9, 9'.

The melt-cutting method according to the present invention differs from conventional glass fiber fabric cutting methods in that it instantly melt-cuts and at the same time fuses the cut edges in an arbitrary minute width. It can prevent the tissue from fraying and fraying.

Furthermore, since cutting into complicated shapes can be easily performed compared to conventional methods, high-grade glass fiber fabrics can be manufactured at a lower cost.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a laser irradiation device in the case of implementing the present invention, and FIG. 2 is an explanatory diagram showing the irradiation state of laser light and the irradiation state of a reflected beam by a reflecting mirror. The symbols in the drawings are as follows. 1: Ni glass fiber fabric, 2: Ni guide roller, 3: Laser light irradiation device, 4:
Laser light irradiation tube, 5: Anti-sagging roller, 6: Reflector,
7: Vertical feed rail, 8: Horizontal feed rail, 9 Ni guide roller, 10: Laser light, 11: Convex lens, 12:
Focus, 13: Air supply port, 14: Nozzle, 15: Reflected beam.

Claims (1)

[Claims] 1 In a device that condenses a laser beam and irradiates it to a glass fiber fabric to fuse it, the glass fiber fabric is irradiated with a laser beam from above. 1. A laser-based fusing device for glass fiber fabric, characterized in that a mirror is installed, the laser beam is used to cut the fabric, and at the same time, the reflected beam is used to fuse the cut edges of the fabric in an arbitrary minute width.