JP6955194B2 - Glass article manufacturing method and glass article manufacturing equipment - Google Patents

Description

The present invention relates to a method for manufacturing a glass article having an axial direction and an apparatus for manufacturing a glass article.

Conventionally, there is known a method for cutting a glass tube by forming a scratch on the glass tube and advancing the scratch to cut the glass tube to a predetermined length (see Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2009-132580 Japanese Unexamined Patent Publication No. 2009-132581

The present invention has been made by finding a method suitable for cutting glass having an axial shape such as tubular glass or bar-shaped glass.
An object of the present invention is to provide a method for producing a glass article and an apparatus for producing a glass article, which can suitably cut glass having a shape having an axial direction.

The method for manufacturing a glass article that solves the above problems is a method for manufacturing a glass article that obtains a glass article by cutting glass having an axial shape, and applies an ultrasonically vibrated scriber to the outer peripheral surface of the glass. A crack is formed in the glass in contact with the glass, and the crack is propagated to cut the glass.

As described above, by utilizing the cracks formed on the outer peripheral surface of the glass by the ultrasonically vibrated scriber, the glass having an axial direction can be suitably cut.
In the method for manufacturing a glass article, the glass is tubular glass or bar-shaped glass, the scriber has a cutting edge longer than the outer diameter of the glass, and the longitudinal direction of the cutting edge of the scriber is the axial direction of the glass. It is preferable to arrange the scriber in a direction intersecting with the outer peripheral surface of the glass.

According to this method, it is possible to allow the glass to be displaced with respect to the scriber when the scriber is brought into contact with the outer peripheral surface of the glass.
In the method for manufacturing a glass article, it is preferable that the scriber ultrasonically vibrated along the direction in which the scriber is brought into contact with the glass abuts on the outer peripheral surface of the glass.

According to this method, since the ultrasonic vibration of the scriber propagates suitably to the glass, cracks that easily propagate in a predetermined direction can be formed on the outer peripheral surface of the glass.
In the method for manufacturing a glass article, the glass is transported in a transport direction along an axial direction to bring it into a transport state, the scriber is moved along the transport direction of the glass to be in a moving state, and the scriber is moved to a moving state. Therefore, it is preferable to bring the glass into contact with the outer peripheral surface of the glass in the conveyed state.

By abutting the moving scriber on the conveyed glass as described above, a plurality of glass articles can be continuously obtained.
In the method for producing a glass article, it is preferable to form a crack in the glass in the moving state and then move the scriber to the downstream side of the crack in the transport direction of the glass.

According to this method, it is possible to avoid a collision between the glass conveyed from the upstream side and the scriber.
In the method for manufacturing a glass article, it is preferable to move the scriber in an orbit in the moving state.

According to this method, for example, the moving speed of the scriber in the moving state can be easily increased according to the carrying speed of the glass.
In the method for manufacturing a glass article, the scriber can be linearly moved along the transport direction of the glass in the moving state.

In the method for producing a glass article, it is preferable that the glass is brought into the conveyed state by a traction device that continuously pulls the glass from a molding machine that forms the glass.
According to this method, the glass can be cut continuously on the glass forming line.

In the method for manufacturing a glass article, the scriber may be brought into contact with the planned contact portion in a state where the glass is arranged so that tensile stress is generated at the planned contact portion where the scriber is to be brought into contact with the glass. preferable.

According to this method, cracks formed on the outer peripheral surface of the glass can be immediately propagated to cut the glass.
In the method for manufacturing a glass article, it is preferable that the glass is sandwiched between the scriber and a receiving member, and the receiving member receives a load transmitted from the scriber to the glass.

According to this method, since the ultrasonic vibration of the scriber propagates suitably to the glass, it is possible to form cracks that easily grow in a predetermined direction on the outer peripheral surface of the glass.
The glass article manufacturing apparatus that solves the above problems is the glass article manufacturing apparatus used in the glass article manufacturing method, and the scriber that is in contact with the outer peripheral surface of the glass and the scriber are ultrasonically vibrated. It is provided with an ultrasonic vibrating unit to be made to operate.

According to the present invention, glass having an axial shape can be suitably cut.

It is a schematic front view which shows the manufacturing apparatus of the glass article in embodiment. (A) is a schematic plan view showing a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a glass article manufacturing apparatus. (A) is a schematic plan view showing a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a glass article manufacturing apparatus. (A) is a schematic plan view showing a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a glass article manufacturing apparatus. (A) is a schematic plan view showing a modified example of a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a modified example of a glass article manufacturing apparatus. (A) is a schematic plan view showing a modified example of a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a modified example of a glass article manufacturing apparatus. (A) is a schematic plan view showing a modified example of a glass article manufacturing apparatus, and (b) is a schematic side view showing a main part of a modified example of a glass article manufacturing apparatus. It is the schematic front view which shows the modification example of the manufacturing apparatus of a glass article.

Hereinafter, a method for manufacturing a glass article and an embodiment of an apparatus for manufacturing a glass article will be described with reference to the drawings. In the drawings, for convenience of explanation, a part of the configuration may be exaggerated or simplified. In addition, the dimensional ratio of each part may differ from the actual one.

First, the apparatus for manufacturing a glass article of the present embodiment will be described.
As shown in FIGS. 1, 2 (a) and 2 (b), the glass article manufacturing apparatus 11 is an apparatus for cutting the glass G1 having an axial direction to obtain the glass article G2. The glass article manufacturing apparatus 11 includes a scriber 12 that comes into contact with the outer peripheral surface of the glass G1 and an ultrasonic vibration unit 13 that vibrates the scriber 12. The glass article manufacturing apparatus 11 in the present embodiment advances and retreats to the orbital moving mechanism 14 that orbits the scriber 12 and the ultrasonic vibrating portion 13, and the position where the scriber 12 is in contact with the glass G1 and the position where the scriber 12 is separated from the glass G1. It is further provided with an advancing / retreating mechanism 15.

The glass G1 of the present embodiment is a tubular glass, and is in a transport state in which the glass G1 is transported in the transport direction D1 along the axial direction (tube axial direction). Hereinafter, the X-axis in the XYZ-axis in the drawing represents a horizontal direction along the transport direction D1 of the glass G1, the Y-axis represents a horizontal direction orthogonal to the X-axis, and the Z-axis is orthogonal to the XY plane. It represents the vertical direction (upward).

The glass G1 can be molded by a well-known molding machine. Examples of the molding method include a Dunner method, a down draw method (bellow method), and a redraw method. The glass G1 formed by the molding machine is continuously conveyed by being towed by the traction device 16. The glass article manufacturing apparatus 11 can be suitably used as an apparatus for producing the glass article G2 from small diameter glass having an outer diameter of 0.5 mm or more and 6 mm or less. The length of the glass article G2 obtained by cutting the glass G1 is, for example, in the range of 100 mm or more and 1600 mm or less.

As shown in FIGS. 3A and 3B, the scriber 12 (blade) in the glass article manufacturing apparatus 11 is connected to the ultrasonic vibration unit 13. The scriber 12 has a cutting edge longer than the outer diameter L1 of the glass G1. The glass article manufacturing apparatus 11 is configured so that the scriber 12 can be arranged so that the longitudinal direction of the cutting edge of the scriber 12 intersects the axial direction of the glass G1. The glass article manufacturing apparatus 11 of the present embodiment is configured so that the scriber 12 arranged so that the longitudinal direction of the cutting edge of the scriber 12 is orthogonal to the axial direction of the glass G1 can be brought into contact with the outer peripheral surface of the glass G1. .. The ratio (ratio = L2 / L1) of the cutting edge length L2 of the scriber 12 to the outer diameter L1 of the glass G1 is preferably 1.2 or more, and more preferably 1.5 or more.

The tip angle of the cutting edge of the scriber 12 is preferably in the range of 10 ° or more and 160 ° or less. The thickness of the scriber 12 is preferably in the range of, for example, 0.5 mm or more and 10 mm or less. Examples of the material of the scriber 12 include cemented carbide and diamond.

The ultrasonic vibration unit 13 in the glass article manufacturing apparatus 11 includes an ultrasonic vibrator that generates ultrasonic vibration and a horn that amplifies the ultrasonic vibration. The vibration direction VD that ultrasonically vibrates the scriber 12 is a direction along the direction in which the scriber 12 is brought into contact with the glass G1. That is, the scriber 12 is vibrated (longitudinal vibration) in the direction from the base end side (fixed end) to the tip end side (free end). The frequency of ultrasonic vibration given to the scriber 12 by the ultrasonic vibration unit 13 is preferably in the range of, for example, 15 kHz or more and 60 kHz or less.

The orbiting moving mechanism 14 in the glass article manufacturing apparatus 11 includes a support portion 14a for supporting the advancing / retreating mechanism 15 and a rotating shaft 14b for rotating the supporting portion 14a. The rotating shaft 14b is arranged laterally with respect to the axial direction of the glass G1. The orbital movement mechanism 14 is configured to move the scriber 12 in an orbital orbit (circular orbit). The orbital movement mechanism 14 includes a drive unit that rotationally drives the rotary shaft 14b and a control unit that controls the rotation speed. The rotation speed of the orbiting moving mechanism 14 (cycle of the scriber 12) can be adjusted according to the length dimension of the glass article G2. The shape of the support portion 14a in the orbiting movement mechanism 14 of the present embodiment is disk-shaped, but may be changed to, for example, an arm shape.

The advancing / retreating mechanism 15 in the glass article manufacturing apparatus 11 advances / retreats the scriber 12 together with the ultrasonic vibrating unit 13. More specifically, the advancing / retreating mechanism 15 advances / retreats the scriber 12 along the axial direction of the rotating shaft 14b of the orbiting moving mechanism 14. The advancing / retreating mechanism 15 includes a cylinder and a drive unit that drives the cylinder. The advancing / retreating mechanism 15 can be configured to control a drive unit such as a servomotor based on the position information of the scriber 12 to be rotated, for example. The advancing / retreating mechanism 15 can also be used as an adjusting mechanism for adjusting the position of the scriber 12 according to the outer diameter dimension when cutting the glass G1 having a different outer diameter dimension.

The glass article manufacturing apparatus 11 of the present embodiment further includes a receiving member 17 that receives a load transmitted from the scriber 12 to the glass G1. The receiving member 17 is arranged at a position where the glass G1 is sandwiched with the scriber 12 when the scriber 12 comes into contact with the glass G1. The receiving member 17 can also be used as a fulcrum when cutting the glass G1. The receiving member 17 of the present embodiment is composed of a roller having a rotation axis orthogonal to the axial direction. The receiving member 17 may be a free roller or a drive roller that is rotationally driven at a predetermined speed. Further, the receiving member 17 is not limited to the roller, and may be changed to a receiving member which has a sliding contact surface to which the glass G1 is slidably contacted and is arranged so as not to rotate.

The glass article manufacturing apparatus 11 includes a pressing member 18 that presses the glass G1 so that a tensile stress is generated at the planned contact portion where the scriber 12 is to be brought into contact with the glass G1. More specifically, the pressing member 18 is arranged on the downstream side of the glass G1 in the transport direction D1 from the above-mentioned planned contact portion. The pressing member 18 may be a free roller or a driving roller that is rotationally driven at a predetermined speed. Further, the pressing member 18 is not limited to the roller, and can be changed to a pressing member which has a sliding contact surface to which the glass G1 is in sliding contact and is provided so as not to rotate.

Next, the method of manufacturing the glass article will be described together with the operation of the glass article manufacturing apparatus 11.
As shown in FIG. 1, in the method for manufacturing a glass article, the glass G1 is towed by the traction device 16 to convey the glass G1 in the conveying direction D1 along the axial direction to bring the glass G1 into a conveying state. At this time, by using the pressing member 18, the glass G1 is arranged so that a tensile stress is generated at the planned contact portion where the scriber 12 is to be brought into contact with the glass G1. Further, as shown in FIGS. 2A and 2B, in the method for manufacturing a glass article, the scriber 12 is moved by the orbiting moving mechanism 14 along the conveying direction D1 of the glass G1 to bring it into a moving state. ..

Next, as shown in FIGS. 3A and 3B, in the method for manufacturing a glass article, the moving scriber 12 is advanced to a position where it comes into contact with the outer peripheral surface of the glass G1 by the advancing / retreating mechanism 15. At this time, the scriber 12 is ultrasonically vibrated by the ultrasonic vibration unit 13 in the glass article manufacturing apparatus 11. In the method for manufacturing a glass article, a scriber 12 that has been ultrasonically vibrated is brought into contact with the outer peripheral surface of the glass G1 to form a crack in the glass G1, and the crack is propagated to cut the glass G1. By utilizing the cracks formed on the outer peripheral surface of the glass G1 by the scriber 12 ultrasonically vibrated in this way, the glass G1 having an axial direction can be suitably cut.

In the present embodiment, the glass G1 is sandwiched between the scriber 12 and the receiving member 17, and the receiving member 17 receives the load transmitted from the scriber 12 to the glass G1. Further, in the present embodiment, the scriber 12 ultrasonically vibrated along the direction in which the scriber 12 is brought into contact with the glass G1 (the direction in which the scriber 12 is advanced by the advancing / retreating mechanism 15) is brought into contact with the outer peripheral surface of the glass G1.

Here, the glass G1 before contacting the scriber 12 may be displaced in the radial direction of the glass G1. For example, the glass G1 in the transported state as in the present embodiment swings in the direction intersecting the transport direction D1, so that the above-mentioned misalignment occurs. At this time, in the method for manufacturing a glass article of the present embodiment, a scriber 12 having a cutting edge longer than the outer diameter L1 of the glass G1 is used, and the longitudinal direction of the cutting edge of the scriber 12 is in a direction intersecting the axial direction of the glass G1. The scriber 12 is arranged so as to abut the outer peripheral surface of the glass G1. According to this method, when the scriber 12 comes into contact with the outer peripheral surface of the glass G1, the displacement of the glass G1 with respect to the scriber 12 can be allowed.

As shown in FIGS. 4A and 4B, in the moving state of the scriber 12, after forming a crack in the glass G1, the scriber 12 is moved to the downstream side of the glass G1 in the transport direction D1 from the crack. .. That is, in the moving state of the scriber 12, the scriber 12 is moved at a speed capable of overtaking the planned contact portion where the scriber 12 is to be brought into contact with the glass G1. More specifically, the velocity of the orbiting scriber 12 can be decomposed into a velocity component in the transport direction D1 of the glass G1 and a velocity component orthogonal to the transport direction D1 of the glass G1. In the moving state of the scriber 12, in order to move the scriber 12 at a speed located downstream of the crack in the transport direction D1, among the speeds of the scriber 12, the velocity component in the transport direction D1 of the glass G1 is the transport of the glass G1. It may be set to be faster than the speed.

Here, the position of the scriber 12 can be represented by the central angle of the rotation shaft 14b of the orbiting movement mechanism 14. When the straight line connecting the center of the rotation shaft 14b of the orbiting moving mechanism 14 and the planned contact portion where the scriber 12 abuts on the glass G1 is set to a central angle of 0 °, the velocity component of the scriber 12 has, for example, a central angle. It can be set to be faster than the transport speed of the glass G1 in the range of −θ ° or more and + θ ° or less. In this case, θ ° can be set, for example, in the range of 5 ° or more and 20 ° or less.

Next, the scriber 12 after forming a crack in the glass G1 is retracted by the advancing / retreating mechanism 15, and the scriber 12 is moved by the orbiting moving mechanism 14. At this time, by repeating the above-mentioned transfer of the glass G1 and the operation of the scriber 12, the glass article G2 cut to a predetermined length can be continuously manufactured.

According to the embodiment described in detail above, the following effects are exhibited.
(1) The method for producing a glass article is a method of obtaining a glass article G2 by cutting a glass G1 having a shape having an axial direction. In the method of manufacturing a glass article, an ultrasonically vibrated scriber 12 is brought into contact with the outer peripheral surface of the glass G1 to form a crack in the glass G1, and the crack is propagated to cut the glass G1.

As described above, by utilizing the cracks formed on the outer peripheral surface of the glass G1 by the scriber 12 ultrasonically vibrated, the glass G1 having an axial direction can be suitably cut. That is, according to the method of the present embodiment, for example, the direction in which the cracks formed on the outer peripheral surface of the glass G1 grow can be stabilized. This makes it possible to increase the non-defective rate of the glass article G2 and improve the quality of the cut surface of the glass article G2.

(2) The scriber 12 used in the method for manufacturing a glass article has a cutting edge longer than the outer diameter L1 of the glass G1. In the method for manufacturing a glass article, the longitudinal direction of the cutting edge of the scriber 12 is arranged in a direction intersecting the axial direction of the glass G1, and the scriber 12 is in contact with the outer peripheral surface of the glass G1.

According to this method, when the scriber 12 comes into contact with the outer peripheral surface of the glass G1, the displacement of the glass G1 with respect to the scriber 12 can be allowed. Therefore, it is possible to more preferably cut the glass G1 having a shape having an axial direction.

(3) In the method for manufacturing a glass article, the scriber 12 ultrasonically vibrated along the direction in which the scriber 12 is brought into contact with the glass G1 is brought into contact with the outer peripheral surface of the glass G1.
In this case, since the ultrasonic vibration of the scriber 12 propagates suitably to the glass G1, cracks that easily propagate in a predetermined direction can be formed on the outer peripheral surface of the glass G1. Therefore, it is possible to more preferably cut the glass G1 having a shape having an axial direction.

(4) In the method for manufacturing a glass article, the glass G1 is transported in the transport direction D1 along the axial direction, and the scriber 12 is moved along the transport direction D1 of the glass G1 to be in the moving state. In the method for manufacturing a glass article, the scriber 12 is brought into contact with the outer peripheral surface of the glass G1 in the transported state in a moving state.

By abutting the moving scriber 12 on the conveyed glass G1 as described above, a plurality of glass articles G2 can be continuously obtained. Therefore, the productivity of the glass article G2 can be increased.

(5) In the method for manufacturing a glass article, in the moving state of the scriber 12, after forming a crack in the glass G1, the scriber 12 is moved to the downstream side of the glass G1 in the transport direction D1 from the crack. In this case, it is possible to avoid a collision between the glass G1 conveyed from the upstream side and the scriber 12. Therefore, it is possible to increase the productivity of the glass article G2 and improve the non-defective rate of the glass article G2 and the quality of the cut surface of the glass article G2.

(6) In the method for manufacturing a glass article, the scriber 12 is moved in an orbit while the scriber 12 is in a moving state. In this case, for example, the moving speed of the moving scriber 12 can be easily increased according to the carrying speed of the glass G1. Therefore, it becomes easy to increase the productivity of the glass article G2.

(7) In the method for manufacturing a glass article, the glass G1 is conveyed by a traction device 16 that continuously pulls the glass G1 from a molding machine that forms the glass G1. In this case, the glass G1 can be cut by a transport line continuous with the molding line of the glass G1. This makes it possible to simplify the manufacturing equipment for glass articles.

(8) In the method for manufacturing a glass article, the scriber 12 is brought into contact with the planned contact portion in a state where the glass G1 is arranged so that tensile stress is generated at the planned contact portion where the scriber 12 is to be brought into contact with the glass G1. There is. In this case, the crack formed on the outer peripheral surface of the glass G1 can be immediately propagated to cut the glass G1.

(9) In the method for manufacturing a glass article, the glass G1 is sandwiched between the scriber 12 and the receiving member 17, and the receiving member 17 receives a load transmitted from the scriber 12 to the glass G1. In this case, since the ultrasonic vibration of the scriber 12 propagates suitably to the glass G1, it is possible to form cracks that easily propagate in a predetermined direction on the outer peripheral surface of the glass G1. Therefore, it is possible to more preferably cut the glass G1 having a shape having an axial direction.

(Change example)
The above embodiment may be changed as follows.
-As shown in FIGS. 5 to 7, in the method for manufacturing a glass article, the scriber 12 may be linearly moved along the transport direction D1 of the glass G1 without being moved in the orbit. In this case, as shown in FIG. 5A, the orbital moving mechanism 14 of the glass article manufacturing apparatus 11 may be changed to the linear motion mechanism 19. As the linear motion mechanism 19, for example, a ball screw or a fluid pressure cylinder can be used. The linear motion mechanism 19 is configured to be reciprocating along the transport direction D1 of the glass G1. In the method for manufacturing the glass article, as shown in FIGS. 5A and 5B, the scriber 12 is moved by the linear motion mechanism 19 along the transport direction D1 of the glass G1.

Next, as shown in FIGS. 6A and 6B, the moving scriber 12 is advanced to a position where it comes into contact with the outer peripheral surface of the glass G1 by the advancing / retreating mechanism 15. Subsequently, as shown in FIGS. 7A and 7B, in the moving state of the scriber 12, after forming a crack in the glass G1, the scriber 12 is located downstream of the crack in the transport direction D1 of the glass G1. To move. Next, the scriber 12 after forming a crack in the glass G1 is retracted in the direction away from the glass G1 by the advancing / retreating mechanism 15, and is moved to the upstream side of the transport direction D1 of the glass G1 by the linear motion mechanism 19.

Even when the above changes are made, for example, the same effect as that described in column (5) of the above embodiment can be obtained. However, as described above, from the viewpoint that it is easy to set the moving speed of the scriber 12 faster, it is preferable to adopt the orbiting moving mechanism 14 rather than the linear motion mechanism 19.

-For example, as shown in FIG. 8, in the transport direction D1, after the glass G1 is transported to the downstream side, cracks in the glass G1 can be propagated. That is, with respect to the position where the cutting of the glass G1 is completed in the transport direction D1 of the glass G1, the support roller 20 serves as a fulcrum when the position of the pressing member 18 is changed or a tensile stress is generated in the crack formed in the glass G1. Can be changed by further providing.

-In the method for manufacturing a glass article, in the moving state of the scriber 12, after forming a crack in the glass G1, the scriber 12 is moved to the downstream side of the glass G1 in the transport direction D1 from the crack. Here, by moving the scriber 12 so that the speed component of the moving scriber 12 becomes the same as the transport speed of the glass G1 in the transported state, the glass G1 transported from the upstream side and the scriber 12 It is also possible to avoid collisions. However, if the moving speed of the scriber 12 is slightly reduced, the glass G1 conveyed from the upstream side and the scriber 12 may collide with each other, and the end portion of the glass G1 conveyed from the upstream side may be damaged. From the viewpoint of avoiding such breakage of the glass G1, it is preferable to set the speed of the scriber 12 as in the above embodiment.

-In the glass article manufacturing apparatus 11, the orientation of the scriber 12 with respect to the orbiting moving mechanism 14 can be changed. For example, the tip of the scriber 12 (the cutting edge of the blade) is arranged so as to protrude along the direction orthogonal to the axial direction of the rotation axis 14b of the orbiting moving mechanism 14, and the scriber 12 is brought into contact with the outer peripheral surface of the glass G1. You may. In this case, the advancing / retreating mechanism 15 in the glass article manufacturing apparatus 11 may be omitted.

-In the method for manufacturing a glass article, a pressing member 18 is used to generate a tensile stress at a contact portion where the scriber 12 is to be brought into contact, but the pressing member 18 is not used and the glass G1 is used to apply the stress. It is also possible to generate tensile stress in the planned contact portion.

-In the method for manufacturing a glass article, a crack can be formed in the glass G1 by bringing the scriber 12 into contact with the glass G1 without using the receiving member 17.
-In the method for manufacturing a glass article, the scriber 12 may be brought into contact with the outer peripheral surface of the glass G1 in a state where the longitudinal direction of the cutting edge of the scriber 12 (blade) is arranged so as to be inclined with respect to the axial direction of the glass G1. .. That is, the cut surface of the glass article G2 may be a cut surface orthogonal to the axial direction of the glass article G2, or may be a cut surface inclined with respect to the axial direction of the glass article G2. As described above, the method for producing the glass article can be applied as a method for obtaining the glass article G2 by cutting the glass G1 along the direction intersecting the axial direction.

-The vibration direction VD of the scriber 12 in the method of manufacturing a glass article can be changed to a direction inclined with respect to the direction in which the scriber 12 is brought into contact with the scriber 12.
-In the method for manufacturing a glass article, as the scriber 12 (blade), a scriber having a cutting edge length L2 shorter than the outer diameter L1 of the glass G1 may be used.

-In the method for manufacturing a glass article, a scribe wheel (wheel tip) may be used as the scriber 12. That is, the scribing wheel that has been ultrasonically vibrated may be brought into contact with the outer peripheral surface of the glass G1 by traveling along the direction intersecting the axial direction of the glass G1.

-In the method for manufacturing a glass article, the scriber 12 is in contact with the outer peripheral surface of the glass G1 in a conveyed state, but the scriber 12 may be in contact with the outer peripheral surface of the glass G1 in a stationary state without being conveyed. In this case, the scriber 12 may be brought into contact with the outer peripheral surface of the glass G1 after the glass G1 is supported by a support member that supports at least one end side of the glass G1.

In the method for manufacturing a glass article, the posture of the glass G1 is not limited to the horizontal posture in which the axial direction of the glass G1 is horizontal, and the vertical posture in which the axial direction of the glass G1 is vertical or the axial direction of the glass G1 is horizontal. The tilted posture may be tilted with respect to the direction and the vertical direction.

-The method for producing a glass article can also be applied to the production of a glass article obtained by cutting bar-shaped glass. Further, the bar-shaped glass may be a round bar or a polygonal columnar shape.

11 ... Glass article manufacturing device, 12 ... Scriber, 13 ... Ultrasonic vibrating part, 16 ... Traction device, 17 ... Receiving member, D1 ... Transport direction, G1 ... Glass, G2 ... Glass article, L1 ... Outer diameter, L2 ... Length, VD ... Vibration direction.

Claims (10)

A method for manufacturing a glass article, which is obtained by cutting tubular or rod-shaped glass to obtain a glass article.
A step is provided in which a scriber that has been ultrasonically vibrated is brought into contact with the outer peripheral surface of the glass to form a crack in the glass, and the crack is propagated to cut the glass.
The scriber has a linear cutting edge longer than the outer diameter of the glass, and is arranged in a direction in which the longitudinal direction of the cutting edge of the scriber intersects the axial direction of the glass and is viewed from the axial direction of the glass. A method for producing a glass article, which comprises arranging the cutting edge of the scriber so as to project from both side ends in the radial direction of the glass so that the scriber abuts on the outer peripheral surface of the glass. .. The method for manufacturing a glass article according to claim 1, wherein the scriber ultrasonically vibrated along a direction in which the scriber is brought into contact with the glass is brought into contact with the outer peripheral surface of the glass. The glass is transported in the transport direction along the axial direction to bring it into a transport state.
The scriber is moved along the transport direction of the glass to bring it into a moving state.
The method for manufacturing a glass article according to claim 1 or 2, wherein the scriber is brought into contact with the outer peripheral surface of the glass in the conveyed state in a moving state. The method for producing a glass article according to claim 3, wherein the scriber is moved downstream of the crack in the transport direction of the glass after forming a crack in the glass in the moving state. The method for manufacturing a glass article according to claim 3 or 4, wherein the scriber is moved in an orbit in the moving state. The method for manufacturing a glass article according to claim 3 or 4, wherein the scriber is linearly moved along the transport direction of the glass in the moving state. The glass article according to any one of claims 3 to 6, wherein the glass is brought into the conveyed state by a traction device that continuously pulls the glass from a molding machine for molding the glass. Production method. The first aspect of the present invention, wherein the scriber is brought into contact with the planned contact portion in a state where the glass is arranged so that tensile stress is generated at the planned contact portion where the scriber is to be brought into contact with the glass. Item 8. The method for producing a glass article according to any one of items 7. The production of the glass article according to any one of claims 1 to 8, wherein the glass is sandwiched between the scriber and a receiving member, and the receiving member receives a load transmitted from the scriber to the glass. Method. A glass article manufacturing apparatus used in the method for manufacturing a glass article according to any one of claims 1 to 9.
An apparatus for manufacturing a glass article, comprising: the scriber that comes into contact with the outer peripheral surface of the glass, and an ultrasonic vibration unit that ultrasonically vibrates the scriber.

Images