JP2005112666A - Apparatus for cutting laminated glass - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for cutting laminated glass, whereby the laminated glass can be easily and quickly cut. <P>SOLUTION: The apparatus 1 for cutting the laminated glass is composed of a work bench 2 on which the laminated glass 7 to be cut is placed, slits 6 formed on the work bench 2 and a flat cutting member 4 which can move vertically by penetrating through the slits 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a laminated glass cutting device for cutting laminated glass, and more particularly to a cutting device used for collecting laminated glass used for a windshield (windshield) of an automobile.

  Laminated glass is used for the windshield of automobiles to ensure the safety of passengers in the event of damage. Laminated glass is obtained by bonding two glass plates through an intermediate film serving as an adhesive layer, and even if the glass plate is crushed by impact, fragments are not scattered because they are bonded to the intermediate film. When collecting and reusing such a windshield made of laminated glass, it is inconvenient to handle and difficult to transport if it is as it is, so it is desirable to cut it to a predetermined size and transport it to the collection site. It is rare.

  As a method for cutting the windshield, a cutting method using a cutting tool is known (see, for example, Patent Document 1 and Patent Document 2). However, in the cutting methods described in Patent Documents 1 and 2, since the operator performs a cutting operation while moving the cutting tool along the cutting line using the cutting tool, it takes time and requires a lot of time for cutting. Therefore, it is inefficient as a glass recovery method for cutting and transporting laminated glass for reuse of laminated glass. In particular, it is inefficient as a cutting device when the windshield already removed from the vehicle body is further divided.

Japanese Patent Laid-Open No. 10-236840 Japanese Patent Laid-Open No. 11-236235

  An object of this invention is to provide the laminated glass cutting device which can cut | disconnect a laminated glass simply and rapidly.

  In order to achieve the above object, in the invention of claim 1, a work table on which the laminated glass to be cut is placed, a slit formed in the work table, and a plate-like cutting that is vertically movable through the slit. A laminated glass cutting device characterized by having a member.

  According to a second aspect of the present invention, the lower edge of the cutting member has an inverted V shape that inclines downward from the center in the slit longitudinal direction toward both ends.

  According to the invention of claim 1, the laminated glass is placed on the work table, the plate-like cutting member on the slit is lowered, the laminated glass is pressed along the slit, and the slit is passed through the slit. Since the laminated glass is cut at the edge, the laminated glass can be cut easily and quickly. Thereby, especially when reusing the glass, it is possible to efficiently make the large laminated glass into a small shape that is easy to handle and transport in a short time.

  As the cutting mechanism, when the cutting member pushes the laminated glass through the slit, the laminated glass is pushed into the slit, the glass plates on both sides of the intermediate film are broken along the slit, and the sharp film is broken by the sharp edges. It is thought to cut.

  According to the second aspect of the present invention, when a curved laminated glass such as a windshield of an automobile is placed on the work table in a convex state and cut, the inverted V-shaped cutting member is convex. The laminated glass is sandwiched from both sides, and can be cut while being pressed from above by the cutting members on both end sides protruding downward from the center of the V shape. Therefore, after the laminated glass is once placed on the work table at the time of cutting, it is prevented from shifting when the cutting member comes into contact with the laminated glass.

FIG. 1 is a side view of a laminated glass cutting device according to the present invention, and FIG. 2 is a front view of FIG.
A laminated glass cutting device 1 according to the present invention includes a work table 2, a lifting device 3, and a cutting blade 4. The lifting device 3 is composed of an oil cylinder 13 driven by a hydraulic pump 12. 11 is a battery, and 14 is a hydraulic tank. The oil cylinder 13 is connected to an elevating member 5 that moves up and down along the column 15. The cutting blade 4 is attached to the lifting member 5. Therefore, the cutting blade 4 is moved up and down by the oil cylinder 13 of the lifting device 3.

  A slit (gap) 6 (FIG. 2) is formed in the work table 2 at a position where the cutting blade 4 moves up and down and passes through the work table 2. The cutting blade 4 is made of a durable hard steel plate such as chromium molybdenum. The cutting edge may be processed so as to be sharpened by inclining both or one side of the lower edge of the plate material after cutting the plate material, or it may be in a state of cutting the plate material (while the plate thickness surface is left open) (see FIG. Then, the plate thickness surface is cut off and unprocessed flat state). The lower edge of the cutting blade 4 is gradually lowered from the longitudinal center toward both ends, and is inclined in an inverted V shape. Note that the cutting edge may be linear without being inclined in an inverted V shape. Or the curve or V shape which the center part protruded below may be sufficient.

  When the laminated glass 7 such as a windshield of an automobile is cut using the cutting device 1, the laminated glass 7 removed from the vehicle body is first placed on the work table 2. Next, the lifting device 3 is operated and the cutting blade 4 is lowered by the oil cylinder 13. At this time, the cutting edge 4 of the cutting blade 4 collides with the laminated glass 7 to cause a crack (crack) in the glass plate on the upper side (the collided side) of the laminated glass 7. The edge of the plate cuts polyvinyl butyral (PVB), which is an intermediate film of the laminated glass 7, and the cutting blade 4 descends and pushes the portion that has not been completely cut. The cutting blade 4 is lowered and passes through the slit 6 as it is.

  When the laminated glass 7 is cut, the cutting blade 4 is raised by the lifting device 3, and only the cut laminated glass 7 remains on the work table 2, and this is recovered and transported. At this time, since the laminated glass 7 is cut and has a size that is easy to carry, the carrying work during glass collection can be performed efficiently. Further, since the glass fragments are bonded to the intermediate film, they do not scatter and are easy to handle and the recovery rate does not decrease.

  Moreover, it is preferable that the laminated glass 7 mounted in the work table 2 is two or more in order to improve efficiency. At this time, if the oil pressure of the oil cylinder 13 is too low, the cutting blade 4 cannot push the laminated glass 7, so that it is necessary to adjust the oil pressure of the oil cylinder 13 according to the number of laminated glasses 7. If the slit 6 width is too narrow or too wide, the crack edge of the glass plate does not contact the intermediate film effectively, and the intermediate film cannot be cut. Therefore, the width of the slit is adjusted according to the thickness of the laminated glass. It is necessary to adjust the thickness of the cutting blade.

  In addition, by using two or more cutting blades 4, preferably three or more as shown in the figure, the laminated glass 7 serves as a presser when cutting a curved laminated glass 7 such as a windshield of an automobile. Can be prevented from moving at the moment of contact, and can be efficiently divided into a plurality of pieces. Further, if the cutting edge of the cutting blade 4 is inclined in an inverted V shape as described above, both ends of the cutting edge serve as pressing members for the laminated glass 7, so that the laminated glass 7 can be further prevented from shifting. Therefore, it is preferable to determine the inclination angle of the inverted V shape of the cutting edge of the cutting blade 4 in consideration of the curvature so as to contact the laminated glass 7 at two points. Although three cutting blades 4 are used in the figure, one, two, or four or more cutting blades may be used.

Examples of laminated glass cutting using the laminated glass cutting device 1 according to the present invention are shown below.
Laminated glass 7 (thickness 5) using a single cutting blade 4 having a length of 1000 mm and a thickness of 4.5 mm, and bonding two glass plates having a thickness of 2.2 mm through polyvinyl butyral having a thickness of 0.76 mm. .16 mm). In addition, the used cutting blade 4 used what the edge of the edge part was 180 mm, and the blade edge | tip with the center part height of 120 mm inclined in reverse V shape.

The load is
(Reading of hydraulic gauge) x (Cylinder cross section)
= 150 (kgf / cm ² ) × (2.5 cm × 2.5 cm × 3.14)
= 2994 kgf.

  When the width of the slit 6 was 7 mm under these conditions, two laminated glasses 7 were cut simultaneously. When the slit width was 20 mm, 6 sheets of laminated glass 7 were cut simultaneously, and 2 sheets were cut simultaneously with a slit width of 25 mm.

The side view of the laminated glass cutting device which concerns on this invention. The front view of FIG.

Explanation of symbols

1: Laminated glass cutting device, 2: Work table, 3: Lifting device, 4: Cutting blade,
5: Lifting member, 6: slit, 7: laminated glass, 11: battery
12: Hydraulic pump, 13: Oil cylinder, 14: Hydraulic tank,
15: Prop.

Claims (2)

A work table on which the laminated glass to be cut is placed;
A slit formed in the workbench;
A laminated glass cutting device comprising a plate-like cutting member that passes through the slit and is movable up and down. 2. The laminated glass cutting device according to claim 1, wherein the lower edge of the cutting member has an inverted V shape inclined downward from a central portion in a slit longitudinal direction toward both end portions.

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