SU1528752A1 - Method of breaking glass sheets - Google Patents

Abstract

The invention relates to the glass industry and can be used in in-line high-performance mechanized and automatic lines for cutting glass sheets. The purpose of the invention is to improve the quality of the edges. A method for breaking glass sheets cut line lies in the fact that the fault is carried out on a cylindrical support surface by exerting a force on the glass edge emy separated at cutting line offset from the axis of the line support roller by the amount of L = ^R. TGΑ / 2, where L is the offset value of the cutting line from the center line of the support roll

R is the radius of the cylindrical support surface

α is the fault angle. The method provides an increase in productivity due to the possibility of using it in flow mechanized and automatic lines. 4 il.

Description

The invention relates to the glass industry and can be used in high-flow mechanized and automatic lines for cutting glass sheets.

The purpose of the invention is to improve the quality of the edges.

Figure 1 is a diagram of the application of the cutting line; 2 is a diagram of the movement of the sheet and the displacement of the cutting line; on fig.Z - the scheme of the fault-fragments of the workpiece; figure 4 is a fragment of the fault pattern.

The essence of the method is as follows.

Flat glass 1 or a sheet of glass is placed on the cylindrical support surface 2, the cut line 3 is applied.

Shift the cutting line from the centerline

About support roll 2

by the value of L R tg i (/ 2,

where R is the radius of the cylindrical reference

surface;

o / is the fault angle. Then, a bending force R. is applied to the offset edge 4 of the glass.

Example. A sheet of glass 1 is placed on a cylindrical support surface 2 in the form of a roll, at a given distance from the edge is applied a cutting line 3 with a cutting tool 5 along the axis of the support roll. After that, the glass sheet is moved, and the cutting line is displaced relative to the axis of the support roll by an amount L, determined depending on the roll radius R and the break angle o (.

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the fracture angle is defined as the angle through which the sheet must be bent to provide a guaranteed break. The fracture is produced by applying a load O to the edge of the sheet 4, which bends the sheet to an angle o

The fault line divides the fault angle in half, forming two equilateral right triangles f (FIG. 4) with angles A, B, C and sides a, b, c, where the side (b is the support roll radius, side a - reflects the path traversed by the cutting line from the reference line of the cylinder to the fault, and the angle A of the triangle, formed by sides b and c, is a half fault.

It is known from the properties of rectangular triangular-20 NIKOV that a b-tg-A, therefore at values a L, b R the angle

15287524

The breaking of the glass sheets by the proposed method can be carried out both with discontinuous and uninterrupted supply of notched glass sheets to the place of fracture and separation. When breaking a continuously moving glass, it is necessary to synchronize the speed of the transporting rollers 6 and the support roll 2 and the rollers 7 of the load unit.

The proposed method of breaking glass sheets ensures a high quality of the edges of the Tia, thereby eliminating mechanical damage to the edges of the used glass blanks.

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Claims (1)

Invention Formula The method of breaking glass sheets along the cutting line with application of force on the cylindrical bearing surface and displacement of the cutting line from the centerline of the support roll, characterized in that, in order to improve the quality of edges, the amount of displacement of the cutting line L is determined by the formula the linear dependence of the path is determined by the line of R-t g The edge of the sheets is of high quality, since contact between the edges of the workpieces to be cut when cutting is prevented. five Invention Formula The method of breaking glass sheets along the cutting line with application of force on the cylindrical bearing surface and displacement of the cutting line from the centerline of the support roll, characterized in that, in order to improve the quality of edges, the amount of displacement of the cutting line L is determined by the formula L R tg / 2, where R is the radius of the cylindrical bearing surface, c, (is the angle of fracture. FIG. 2 p y j Fi5. five