JPH0341653Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutter for cutting a portion of an interlayer film sandwiched between glass plates that protrudes from the area of the glass plates.

[Conventional technology]

Laminated glass for automobile front windows and construction uses an interlayer film made of a sheet of thermoplastic resin such as polyvinyl butyral or polyethylene terephthalate between two glass plates, and the adhesive strength of the interlayer film provides high strength and strength. Highly safe laminated glass is used that prevents shattering when broken.
This laminated glass is made by interposing the interlayer film cut into a shape slightly larger than the sheet glass between two sheets of glass that have been processed into a desired shape and dimension, and then stacking them together, with the ends of the interlayer film protruding from the area of the sheet glass. is cut and removed, and then heated and compressed.
Even after the treatment, the intermediate film slightly protrudes from the area of the plate glass, and in the final step, the protruding portion is cut and removed, and a laminated glass product is completed.

Cutting and removing the edge of the interlayer film protruding from the area of the plate glass requires a cutter that ensures that the cut end of the interlayer film is aligned along the edge surface of the glass and does not damage the periphery or end surface of the glass plate. , as prior art thereof, are disclosed in Utility Model Application Publication No. 58-180249 and Utility Model Application Publication No. 59-120593.

In this technology, a cutter with an internal blade and a U-shaped guide groove presses against the end surface of the glass plate and slides along the periphery of the glass plate to cut the interlayer film protruding from the area of the glass plate. , a jig is disclosed in which the blade can be moved in and out freely, and the blade support portion is made of a material softer than plate glass.

[Problems to be solved by the invention] In the above-mentioned conventional cutter for cutting the end of the interlayer film, the interlayer film is caught in by the guide groove having a straight portion while the cutter is sliding, and obstacles caused by the entrainment occur. The problem is that extra force is required by the cutter, which may damage the surface of the glass plate, and that with cutters that grip the handle and slide the blade support, the manual action is linked to fluctuations in the angle of the cutting edge, resulting in uneven cuts. The dot was hot.

An object of the present invention is to provide a cutter for cutting the end of a laminated glass interlayer film, which eliminates the above-mentioned problems and cuts the end of the interlayer film safely and efficiently.

[Means for solving problems]

A frame 3 provided with a handle 4, a blade holder 5 protruding from the frame 3, and a blade 6 clamped to the blade holder.
A grooved first roller 7 and a second roller 8 are provided which roll in contact with the glass end surface 1a of the laminated glass 1.

[Effect]

The blade 6 that cuts the interlayer film 2 protruding from the area of the plate glass is inserted into the slit 5 provided in the blade holding part 5.
a, and at two points on the end surface 1a of the laminated glass, the bottom of the single-step groove 7b provided in the first roller 7 and the outer periphery of the second roller 8, to prevent pitching that is likely to occur due to the pressing force during sliding of the cutter. In addition, a single groove 7b of the first roller 7 is formed on the peripheral edge of the laminated glass 1.
The entire cutter slides straight along the periphery of the laminated glass. In addition to preventing shaking, the contact height between the interlayer film 2 and the blade 6 is made constant,
This is intended to prevent meandering and entanglement of the interlayer film 2 due to the rotation guide groove.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Fig. 1 is a perspective view of the entire cutter assembled according to the present invention, Fig. 2 is an exploded view of the cutter of the present invention, Fig. 3A is a side view of the cutter assembly, and Fig. 3B is a partially cutaway view of the cutter. FIG. 4, which is a cutaway plan view from the back, shows a sectional view of the first roller.

As shown in FIGS. 1 and 2, the cutter placed on the glass end surface 1a of the laminated glass 1 has a handle member 4 mounted on the upper part of the frame 3 and a blade protruding from the frame 3. The holding part 5, the blade 6 held in the slit 5a of the blade holding part 5, and the frame 3 are mounted in shaft holes 3a and 3b arranged in parallel to the blade holding part 5 and provided in both side walls of the frame 3. A first roller 7 and a second roller 8 are provided inside the roller.

Next, the mounting structure of each member will be explained based on the illustrations.

The handle member 4 reinforced by the flat plate 4b has a shape and size that are easy to grip, and the grip portion 4a is lined with hard rubber to prevent slipping.

Next, the blade holding part 5 protruding from the frame 3 is provided with a slit 5a for holding the blade 6, and the fixed angle of the slit 5a is such that it presses against the bottom surface of the single-stage groove 7b of the first roller 7 and the second roller 8. laminated glass 1
The clamped blade is held at an angle of about 15 degrees, for example, as shown by the symbol A, and the center line of the first roller 7 is
The blade 6 is tilted at an angle of about 25 degrees as indicated by the symbol B with respect to X, and the cutting edge 6a of the blade 6
When each roller is set on the glass end surface 1a, the blade 6 is held at a height such that the cutting edge 6a maintains a minute gap from the glass end surface 1a.

When the blade 6 clamped in this state cuts the interlayer film 2 with the blade edge 6a, the blade edge 6a is wedged by the angle A of the slit 5a, and the force generated on the blade edge 6a by the angle B causes the blade edge 6a to If the sharpness increases due to the synergistic effect with the sliding effect, and the sharpness decreases due to wear of the temporary cutting edge 6a, use the slit 5.
It is possible to extend the life of the blade by shifting the blade 6 in a. Further, the upper and lower surfaces of the blade holding part 5 along the inclination angle of the slit 5a have a structure in which the tip on the side of the first roller 7 is made at an acute angle so that the cut intermediate film 2 can be easily discharged along the upper surface of the blade holding part 5. There is.

Next, the first roller 7 and the second roller 8, which are provided with shaft holes 7a and 8a, are made of a hard rubber material that does not damage the glass. A single-stage groove 7b having a slightly larger groove width and a two-stage groove 7c having a width of about 1/2 of the width of the single-stage groove 7b are provided inside the single-stage groove 7b.
The single-stage groove 7b may have a V-shaped structure.
Although the shape of the adjacent second roller 8 is cylindrical, it may be a grooved roller for the same purpose as the single-stage groove 7b of the first roller 7.

To assemble the cutter with the above-mentioned main components, first, the blade 6 is held in the slit 5a of the blade holding part 5, the first roller 7 is loosely inserted into the frame 3, and the shaft holes provided on both side walls of the frame 3 are inserted. 3a is the shaft hole 7 of the first roller 7
a, the shaft 9 is inserted into the hole, and the cotter pin 10 is inserted into the pin hole 9a provided at both ends of the shaft 9 to open the end of the cotter pin. 1
The roller 7 is now able to roll, and the second roller 8 is loosely inserted into the frame 3, and the shaft hole 8a of the second roller 8 is inserted into the shaft hole 3b provided on both side walls of the frame 3. The shaft 11 is inserted into the hole, and the cotter pin 12 is inserted into the pin hole 11a provided at both ends of the shaft 11, and the end of the cotter pin is opened and the shaft 11 is fixed to the frame 3. The roller 8 can also roll.

The next assembled cutter is the first roller 7
The inner edge of the laminated glass 1 is sandwiched in the single-step groove 7b and set on the glass end surface 1a, and with the interlayer film 2 inserted in the two-step groove 7c, each roller presses the top of the glass end surface 1a to form a frame. Handle portion 4 provided on body 3
When the grip part 4a is pulled, each roller rolls, and the two-stage groove 7c pulls up the interlayer film 2 that has been knocked down by the second roller 8, and the guide function of the single-stage groove 7b further moves the periphery of the laminated glass 1. It becomes possible for the cutter to advance along the glass end surface 1a, and it is supported at two points by the pressure rolling of each roller on the glass end surface 1a, which increases the stability against swinging not only for straight shapes but also for curved shapes.
By this effect and by maintaining the gap between the cutting edge 6a and the glass end surface 1a, there is no contact between the glass and the cutting edge 6a, and no cracks or scratches occur on the glass.

[Effect of idea]

In this invention, the grooves provided on the rollers with the above structure provide a guide function, and each roller is pressed and rolled to prevent rocking during sliding. Furthermore, the unique structure of the blade holding part prevents the interlayer film from getting caught up, making it extremely easy to obtain a cut surface with no unevenness, preventing contact between the blade edge and the glass, and placing the blade downstream of the first roller. Because of this, the blade follows the shape of the laminated glass and cuts regardless of whether the surface to be cut is straight or curved, which is extremely effective for product stability and work safety. It is something.

[Brief explanation of the drawing]

What is shown in the drawings is the cutter according to the present invention. Figure 1 is a perspective view of the entire cutter assembly during cutting, Figure 2 is an exploded view of the cutter, and Figure 3A is a side view of the cutter assembly. 4 shows a partially cutaway plan view from the back, and FIG. 4 shows a sectional view of the first roller. DESCRIPTION OF SYMBOLS 1... Laminated glass, 2... Intermediate film, 3... Frame, 4... Handle member, 5... Blade holding part, 6...
Blade, 7...first roller, 8...second roller.

Claims (1)

[Scope of utility model registration request] A cutter for cutting an interlayer film end of a laminated glass that protrudes from a peripheral area of a glass plate sandwiched between two glass plates, the cutter having a frame body having a handle, and a blade holding part protruding from the frame body. , consisting of a blade held between the blade holding parts and two rollers that are arranged in parallel inside the frame and roll in contact with the end surface of the peripheral edge of the glass, and the circumference of the roller that is close to the blade is An end portion of a laminated glass interlayer film, characterized in that a single-stage groove with a groove width for sandwiching the periphery of the laminated glass is provided on the top thereof, and a two-stage groove with a width narrower than the groove width is disposed within the single-stage groove. Cutter for cutting.