JP2021109814A - Method for removing foreign matter from tube glass, foreign matter removal device, and method for producing tube glass - Google Patents

Abstract

To provide a method for removing foreign matter from tube glass, a foreign matter removal device, and a method for producing tube glass that make it possible to suitably remove foreign matter from tube glass.SOLUTION: A method for removing foreign matter from tube glass G includes an air blowing step for blowing air into tube glass G from a first end G1 side of the tube glass G, which has openings at both ends of the first end G1 and a second end G2. In the air blowing step, from the second end G2 of the tube glass G, foreign matter inside the tube glass is discharged to outside. In the air blowing step, a movement restriction member 13 is provided that restricts the movement of the tube glass G by coming into contact with the second end G2 of the tube glass G.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for removing foreign matter from a tube glass, a foreign matter removing device, and a method for manufacturing a tube glass.

As disclosed in Patent Document 1, a method of removing foreign matter in a tube of a tube glass using a gas ejected from a nozzle is known. In this method, foreign matter in the tube is discharged from the opening at the other end of the tube glass by blowing air into the tube through the opening at one end of the tube glass.

Japanese Unexamined Patent Publication No. 2014-009105

When the foreign matter in the tube is removed by blowing air into the tube of the tube glass as described above, the tube glass may move to the leeward side due to the wind pressure. When the tube glass moves in this way, for example, the work of transporting the tube glass to the next process becomes complicated. On the other hand, when the wind pressure received by the tube glass is suppressed, the ability of the tube glass to remove foreign substances in the tube may be reduced.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method for removing foreign matter from a tube glass, a foreign matter removing device, and a method for manufacturing the tube glass, which can suitably remove foreign substances from the tube glass. To do.

A method for removing foreign matter from a tube glass that solves the above problems includes a blowing step of blowing air into the tube from the first end side of the tube glass having openings at both ends of the first end and the second end, and the tube is blown in the blowing step. A method for removing foreign matter in a tube glass for discharging foreign matter in the tube of the tube glass from the second end of the glass. In the blowing step, the tube glass is moved by coming into contact with the second end of the tube glass. Place a movement control member that regulates.

According to this method, in the blowing process, the movement of the tube glass to the leeward side can be regulated by the movement restricting member. By restricting the movement of the tube glass in this way, it is possible to carry out a blowing process in which the wind speed is further increased. As a result, for example, it becomes easy to further improve the cleanliness of the inside of the tube of the tube glass and to remove the foreign matter from the inside of the tube of the tube glass more quickly.

In the method for removing foreign matter from the tube glass, it is preferable to apply vibration to the tube glass by using a vibration exciter in the ventilation step.
According to this method, since the floating of foreign matter in the tube of the tube glass can be promoted, the foreign matter of the tube glass can be removed more preferably. Here, when the tube glass is vibrated by using the vibration exciter, the tube glass is easily lifted and is easily moved by receiving the wind pressure in the blowing process. In the blowing step, since the above-mentioned movement restricting member is arranged, it is possible to restrict the tube glass from moving to the leeward side even when the tube glass is vibrated. Therefore, the foreign matter on the tube glass can be more preferably removed by using the vibration exciter.

In the method for removing foreign matter from the tube glass, the vibration device is brought into contact with at least one end of the first end side end portion and the second end side end portion of the tube glass to bring the tube glass into contact with each other. It is preferable to apply vibration to the glass.

Here, the end portion of the tube glass may be removed as an unnecessary portion in a post-process of the blowing process. By bringing the vibrating device into contact with the end of the tube glass, which is an unnecessary part, even if the end of the tube glass has a poor appearance due to the contact of the vibrating device, the product obtained from the tube glass. The appearance quality of is maintained.

In the method for removing foreign matter from the tube glass, the tube glass is arranged in a posture in which the tube axis is along the horizontal direction, the movement restricting member has an inclined surface, and the inclined surface is the second of the tube glass. It is preferably arranged so as to contact the edges.

According to this method, the airflow flowing out from the second end of the tube glass can be guided along the inclined surface of the movement restricting member. That is, the foreign matter discharged from the inside of the tube glass can be flowed in a predetermined direction by using the movement restricting member.

In the method for removing foreign matter from the tube glass, the inclined surface may be inclined upward or downward as it is separated from the second end of the tube glass outward in the tube axis direction.
In the method for removing foreign matter from the tube glass, it is preferable to use an intake device that sucks gas flowing along the inclined surface of the movement restricting member.

According to this method, the foreign matter that has flowed along the inclined surface of the movement restricting member can be easily recovered.
In the method for removing foreign matter from the tube glass, the tube glass is arranged in a posture in which the tube axis is along the horizontal direction, and the movement restricting member is separated outward from the second end of the tube glass in the tube axis direction. Use an intake device that has an inclined surface that inclines upward as the tube glass is used, the inclined surface is arranged so as to contact the second end of the tube glass, and gas that flows upward along the inclined surface is taken in. Is preferable.

According to this method, the foreign matter that has flowed upward along the inclined surface of the movement restricting member can be easily collected. Further, the inclined surface of the movement restricting member is brought into contact with the lower side of the outer peripheral edge at the second end of the tube glass arranged in the above posture. Therefore, by arranging the second end of the tube glass on the inclined surface of the movement restricting member, the tube glass can be carried in before the blowing process is performed. In addition, the tube glass after the ventilation process can be carried out without changing the position of the movement restricting member. In this way, it is possible to smoothly carry in and out the tube glass.

The foreign matter removing device is a foreign matter removing device for removing foreign matter from the tube glass having openings at both ends of the first end and the second end, and is a blower device that blows air into the tube from the first end side of the tube glass. A movement restricting member that regulates the movement of the tube glass by coming into contact with the second end of the tube glass is provided.

In the foreign matter removing device, the tube glass is arranged in a posture in which the tube axis is along the horizontal direction, the movement restricting member has an inclined surface, and the inclined surface comes into contact with the second end of the tube glass. It is preferable that they are arranged so as to be used.

It is preferable that the foreign matter removing device further includes an angle adjusting mechanism for adjusting the inclination angle of the inclined surface of the movement restricting member.
According to this configuration, for example, the direction in which the foreign matter discharged from the tube of the tube glass flows can be easily adjusted.

The method for manufacturing a tube glass includes a step of removing foreign substances by the above-mentioned method for removing foreign substances from the tube glass.
According to this method, a tube glass with less foreign matter can be obtained.

According to the present invention, foreign matter on the tube glass can be suitably removed.

It is a schematic side view which shows the foreign matter removing apparatus in embodiment. It is a schematic plan view which shows the foreign matter removing device. It is the schematic side view which shows the modification example of the foreign matter removing device partially. It is the schematic side view which shows the modification example of the foreign matter removing device partially.

Hereinafter, an embodiment of a method for removing foreign matter from a tube glass, a foreign matter removing device, and a method for manufacturing a tube glass 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.

As shown in FIGS. 1 and 2, the tube glass G has openings at both ends of the first end G1 and the second end G2. The foreign matter removing device 11 for removing the foreign matter P of the tube glass G comes into contact with the blower device 12 that blows air into the tube from the first end G1 side of the tube glass G and the second end G2 of the tube glass G, thereby causing the tube glass G to come into contact with each other. It is provided with a movement restricting member 13 that regulates the movement of the glass.

As the tube glass G, for example, a straight tubular tube formed from molten glass by using a Dunner method or a down draw method (bellow method) and cut to a predetermined length can be used. For example, in the step of cutting a long tube glass to a predetermined length, foreign matter P such as glass fine powder may enter the tube of the tube glass G.

The blower device 12 of the foreign matter removing device 11 includes a blower nozzle that blows out a blower gas BG toward the inside of the tube glass G whose tube axis is arranged in a horizontal direction. Air or an inert gas can be preferably used as the blowing gas BG. The blower nozzle of the blower device 12 of the present embodiment is configured to blow air to a plurality of tube glasses G arranged in parallel along the horizontal direction. The blower device 12 may include, for example, a plurality of spouts corresponding to the plurality of tube glasses G, or may include spouts extending along the horizontal direction arranged in parallel with the plurality of tube glasses G. May be good.

The movement restricting member 13 of the foreign matter removing device 11 regulates the movement of the tube glass G toward the leeward side in the blowing of the blower device 12 by contacting the second end G2 of the tube glass G. The movement restricting member 13 has an inclined surface 13a, and the inclined surface 13a is arranged so as to come into contact with the second end G2 of the tube glass G. The inclined surface 13a of the movement restricting member 13 is inclined upward as it is separated from the second end G2 of the tube glass G outward in the tube axis direction. More specifically, the inclined surface 13a of the movement restricting member 13 comes into contact with the lower side of the second end G2 of the tube glass G arranged in the above posture. The movement restricting member 13 guides the airflow flowing out from the opening of the second end G2 of the tube glass G. The inclined surface 13a of the movement restricting member 13 preferably extends above the second end G2 of the tube glass G from the viewpoint of expanding the range for guiding the air flow. The inclined surface 13a of the movement restricting member 13 preferably has a width dimension larger than the diameter dimension of the tube glass G in a plan view from the viewpoint of expanding the range for guiding the air flow.

The overall shape of the movement restricting member 13 of the present embodiment is plate-shaped, but the shape is not limited to this shape, and may be, for example, a columnar shape or the like. Examples of the material of the movement restricting member 13 include metals, polymer materials, glass, ceramics, and wood-based materials.

The foreign matter removing device 11 further includes an angle adjusting mechanism 14 for adjusting the inclination angle of the inclined surface 13a of the movement restricting member 13. The angle adjusting mechanism 14 includes, for example, a rotation shaft connected to the movement restricting member 13 and a motor for driving the rotation shaft. The angle adjusting mechanism 14 may be a mechanism for manually adjusting the angle without using a motor.

The foreign matter removing device 11 further includes an intake device 15 for sucking a gas (gas for blowing air) flowing along the inclined surface 13a of the movement restricting member 13. By using this intake device 15, foreign matter P such as glass fine powder discharged from the opening of the second end G2 of the tube glass G can be sucked. The foreign matter removing device 11 is arranged so as to take in the gas flowing upward along the inclined surface 13a of the movement restricting member 13. More specifically, the intake device 15 includes a hood 15a arranged so as to cover above the inclined surface 13a of the movement restricting member 13, and a duct 15b connected to the hood 15a. The duct 15b of the intake device 15 is preferably connected to a dust collector (not shown).

The foreign matter removing device 11 further includes a vibrating device 16 that applies vibration to the tube glass G. The vibrating device 16 vibrates the tube glass G by being brought into contact with the tube glass G. The vibrating device 16 is preferably arranged so as to be in contact with at least one end of the tube glass G on the first end G1 side and the second end G2 side. The vibrating device 16 of the present embodiment is in contact with the end portion of the tube glass G on the second end G2 side. From the viewpoint of suppressing the application of an unnecessary external force to the tube glass G, the vibration exciter 16 is preferably arranged so as to be in contact with the lower side of the tube glass G in the above posture. As the vibrating device 16, for example, a vibrating device 16 including an ultrasonic vibrator or a vibrating device 16 including a vibration motor can be used. The frequency of vibration by the vibration device 16 is preferably in the range of, for example, 15 kHz or more and 25 kHz or less. The amplitude of the vibration by the vibration device 16 is preferably in the range of, for example, more than 0 mm and 1 mm or less.

The foreign matter removing device 11 includes a support member S that supports the tube glass G, and the tube glass G is supported by the support member in a posture in which the tube axis is along the horizontal direction. The support member of the present embodiment is configured to support a plurality of tube glasses G in a parallel state. The support member S preferably has a recess for holding the lower side of the outer peripheral surface of the tube glass G so as to restrict the movement of the tube glass G in the horizontal direction orthogonal to the tube axis.

Next, a method for removing foreign matter from the tube glass G and a method for manufacturing the tube glass G will be described together with their main actions.
The method for removing foreign matter from the tube glass G includes a blowing step of blowing air into the tube from the first end G1 side of the tube glass G. In this blowing step, the foreign matter P in the tube of the tube glass G is discharged from the second end G2 of the tube glass G. In the blowing step, the movement restricting member 13 that regulates the movement of the tube glass G by coming into contact with the second end G2 of the tube glass G is arranged. According to this method, the movement of the tube glass G to the leeward side can be regulated by the movement restricting member 13 in the blowing process. By restricting the movement of the tube glass G in this way, it is possible to perform the blowing process in which the wind speed is further increased. As a result, for example, it becomes easy to further improve the cleanliness inside the tube of the tube glass G and to remove the foreign matter P from the inside of the tube of the tube glass G more quickly. Further, according to the method for manufacturing the tube glass G including the step of removing the foreign matter P by such a foreign matter removing method, the tube glass G having a small amount of the foreign matter P can be obtained.

The movement restricting member 13 used in the blowing process of the present embodiment has the above-mentioned inclined surface 13a. As a result, the gas (gas for blowing air) flowing out from the second end G2 of the tube glass G can flow upward along the inclined surface 13a of the movement restricting member 13. Further, in the ventilation step, by using the intake device 15 that sucks the gas flowing upward along the inclined surface 13a of the movement restricting member 13, the foreign matter P that has flowed upward along the inclined surface 13a of the movement restricting member 13 is removed. It can be easily recovered.

In the blowing step, it is preferable to apply vibration to the tube glass G by using the vibration exciter 16 from the viewpoint of promoting the floating of the foreign matter P in the tube of the tube glass G. The tube glass G may be continuously vibrated or intermittently vibrated in the blowing step.

In the blowing process, the movement of the tube glass G is regulated by the movement restricting member 13 as described above, so that the tube glass G after the blowing process is arranged at a predetermined position. Therefore, the tube glass G after the blowing process can be easily carried out by a moving mechanism such as a robot arm. In the present embodiment, since the second ends G2 of the plurality of tube glasses G are arranged so as to be on the same straight line in a plan view, the plurality of tube glasses G can be efficiently carried out.

The inclined surface 13a of the movement restricting member 13 is in contact with the lower side of the outer peripheral edge of the second end G2 of the tube glass G arranged in the above posture. Therefore, by arranging the second end G2 of the tube glass G on the inclined surface 13a of the movement restricting member 13, the tube glass G can be carried in before the blowing process is performed. Further, the tube glass G after the blowing process can be carried out without changing the position of the movement restricting member 13.

Next, the operation and effect of this embodiment will be described.
(1) The method for removing foreign matter from the tube glass G includes a blowing step of blowing air into the tube from the first end G1 side of the tube glass G. In the blowing step of the method for removing foreign matter from the tube glass G, the foreign matter P in the tube of the tube glass G is discharged from the second end G2 of the tube glass G. In the blowing process, a movement restricting member 13 that regulates the movement of the tube glass G by coming into contact with the second end G2 of the tube glass G is arranged.

According to this method, the movement of the tube glass G to the leeward side can be regulated by the movement restricting member 13, so that the blowing process in which the wind speed is further increased can be performed. Thereby, the foreign matter P of the tube glass G can be suitably removed.

Further, by using the above-mentioned movement restricting member 13, the movement of the tube glass G can be restricted without using a holder having a complicated structure. Therefore, the tube glass G is carried in before the blowing process and after the blowing process. The tube glass G can be smoothly carried out.

(2) In the blowing step, it is preferable to apply vibration to the tube glass G by using the vibration exciter 16. According to this method, the foreign matter P in the tube glass G can be promoted to float in the tube, so that the foreign matter P in the tube glass G can be removed more preferably. Here, when the tube glass G is vibrated by using the vibration exciter 16, the tube glass G is easily lifted and is easily moved by receiving the wind pressure in the blowing process. In the blowing process of the present embodiment, since the movement restricting member 13 described above is arranged, it is possible to restrict the tube glass G from moving to the leeward side even when the tube glass G is vibrated. can. Therefore, the foreign matter P in the tube glass G can be more preferably removed by using the vibration exciter 16.

(3) In the ventilation step, the vibration device 16 is brought into contact with at least one end of the tube glass G on the first end G1 side and the end on the second end G2 side to vibrate the tube glass G. Is preferably added. Here, the end portion of the tube glass G may be removed as an unnecessary portion in a post-process of the blowing process. By bringing the vibration device 16 into contact with the end of the tube glass G, which is such an unnecessary portion, even if the end of the tube glass G has a poor appearance due to the contact of the vibration device 16, the tube glass The appearance quality of the product obtained from G is maintained. Therefore, for example, the yield of the product obtained from the tube glass G can be improved.

(4) In the blowing process, the tube glass G is arranged so that the tube axis is aligned in the horizontal direction. Further, the movement restricting member 13 used in the blowing step has an inclined surface 13a that inclines upward as the distance from the second end G2 of the tube glass G to the outside in the tube axial direction, and the inclined surface 13a is the tube glass G. It is arranged so as to come into contact with the second end G2 of the.

In this case, the airflow flowing out from the second end G2 of the tube glass G can be guided upward along the inclined surface 13a of the movement restricting member 13. That is, the foreign matter P discharged from the inside of the tube glass G can be flowed upward by using the movement restricting member 13. Further, by using the movement restricting member 13 having the inclined surface 13a inclined upward, it is possible to smoothly carry in and out the tube glass G.

(5) In the blowing step, it is preferable to use an intake device 15 that sucks gas flowing upward along the inclined surface 13a of the movement restricting member 13. In this case, the foreign matter P that has flowed upward along the inclined surface 13a of the movement restricting member 13 can be easily recovered.

(6) The foreign matter removing device 11 includes an angle adjusting mechanism 14 for adjusting the tilt angle of the tilted surface 13a of the movement restricting member 13. In this case, for example, the direction in which the foreign matter P discharged from the tube of the tube glass G can be easily adjusted can be adjusted. Thereby, for example, the foreign matter P can be suitably sucked by the intake device 15 by adjusting the inclination angle of the inclined surface 13a of the movement restricting member 13 according to the arrangement and structure of the intake device 15.

(Change example)
This embodiment can be modified and implemented as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

-The vibration device 16 in the foreign matter removing device 11 can be omitted. Further, the position where the vibration device 16 is brought into contact with the tube glass G is not limited to the end portion of the tube glass G, and for example, the vibration device 16 may be brought into contact with the central portion of the tube glass G in the tube axial direction. ..

-The intake device 15 in the foreign matter removing device 11 can be omitted.
The angle adjusting mechanism 14 in the foreign matter removing device 11 can be omitted.
The movement restricting member 13 in the foreign matter removing device 11 is in contact with the lower side of the second end G2 of the tube glass G, but is in contact with a portion other than the lower side of the second end G2 of the tube glass G. It can also be changed to. For example, as shown in FIG. 3, the movement restricting member 13 may be arranged so as to be in contact with the upper side of the second end G2 of the tube glass G. Note that, like the movement restricting member 13, the inclined surface 13a of the movement restricting member 13 may be an inclined surface 13a that inclines downward as it is separated outward from the second end G2 of the tube glass G. In this case, the foreign matter P discharged from the inside of the tube glass G can flow downward.

As shown in FIG. 4, the inclined surface 13a of the movement restricting member 13 in the foreign matter removing device 11 can be omitted. In this case, the movement of the tube glass G can be restricted by arranging the movement restricting member 13 so as to come into contact with the end surface of the second end G2 of the tube glass G. However, from the viewpoint that the positioning of the movement restricting member 13 and the tube glass G is less complicated, the movement restricting member 13 preferably has an inclined surface 13a that contacts the outer peripheral edge of the second end G2 of the tube glass G. .. Further, since the inclined surface 13a in contact with the outer peripheral edge of the second end G2 of the tube glass G does not partially block the opening of the second end G2 of the tube glass G, the second end G2 of the tube glass G It is unlikely to be a resistance to the outflow of gas from the opening.

The foreign matter removing device 11 may include one movement restricting member 13 corresponding to a plurality of tube glasses G, or may include a plurality of movement restricting members corresponding to each of the plurality of tube glasses G. May be good.

The foreign matter removing device 11 may be configured to remove the foreign matter P of a plurality of tube glasses G, or may be configured to remove the foreign matter P of one tube glass G.
-The tube glass G may be arranged in a posture in which the tube axis is inclined with respect to the horizontal direction.

-The blowing step of the method for removing foreign matter from the tube glass G may be performed while the tube glass G is stationary, or may be performed while rotating the tube glass G around the tube axis.
By configuring the blower 12 of the foreign matter removing device 11 to blow air not only inside the tube of the tube glass G but also along the outer peripheral surface of the tube glass G, for example, the foreign matter P adhering to the outer peripheral surface of the tube glass G It is also possible to prevent the foreign matter P discharged from the inside of the tube glass G from reattaching to the outer peripheral surface of the tube glass G.

11 ... Foreign matter removal device, 12 ... Blower, 13 ... Movement control member, 13a ... Inclined surface, 14 ... Angle adjustment mechanism, 15 ... Intake device, 16 ... Vibration device, G ... Tube glass, G1 ... First end, G2 ... 2nd end, P ... Foreign matter.

Claims (11)

A blowing step of blowing air into the pipe from the first end side of the tube glass having openings at both ends of the first end and the second end is provided, and in the blowing step, from the second end of the tube glass to the inside of the tube of the tube glass. It is a method of removing foreign matter from the tube glass that discharges foreign matter.
A method for removing foreign matter from a tube glass, wherein in the blowing step, a movement restricting member that regulates the movement of the tube glass by contacting the second end of the tube glass is arranged. The method for removing foreign matter from a tube glass according to claim 1, wherein in the blowing step, a vibration device is used to apply vibration to the tube glass. 2. The method for removing foreign matter from the tube glass described. The tube glass is arranged so that the tube axis is aligned in the horizontal direction.
The tube glass according to any one of claims 1 to 3, wherein the movement restricting member has an inclined surface and is arranged so that the inclined surface comes into contact with the second end of the tube glass. Foreign matter removal method. The method for removing foreign matter from a tube glass according to claim 4, wherein the inclined surface is inclined upward or downward as it is separated from the second end of the tube glass outward in the tube axis direction. The method for removing foreign matter from a tube glass according to claim 4 or 5, wherein an intake device for sucking gas flowing along the inclined surface of the movement restricting member is used. The tube glass is arranged so that the tube axis is aligned in the horizontal direction.
The movement restricting member has an inclined surface that inclines upward as it is separated outward from the second end of the tube glass in the tube axial direction, and the inclined surface comes into contact with the second end of the tube glass. Arranged as
The method for removing foreign matter from a tube glass according to any one of claims 1 to 3, wherein an intake device for sucking gas flowing upward along the inclined surface is used. A foreign matter removing device for removing foreign matter from a tube glass having openings at both ends of the first end and the second end.
A blower that blows air into the tube from the first end side of the tube glass, and
A foreign matter removing device including a movement restricting member that regulates the movement of the tube glass by coming into contact with the second end of the tube glass. The tube glass is arranged so that the tube axis is aligned in the horizontal direction.
The foreign matter removing device according to claim 8, wherein the movement restricting member has an inclined surface and is arranged so that the inclined surface comes into contact with the second end of the tube glass. The foreign matter removing device according to claim 9, further comprising an angle adjusting mechanism for adjusting the inclination angle of the inclined surface of the movement restricting member. It is a manufacturing method of tube glass.
A method for manufacturing a tube glass, comprising a step of removing foreign substances by the method for removing foreign substances from the tube glass according to any one of claims 1 to 7.

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