KR20110051183A - Device and method for working splitting line for glass ribbon - Google Patents

Abstract

It is the division cutting line processing apparatus of a glass ribbon, and conveys a glass ribbon, and presses the upper surface of a glass ribbon with respect to the some conveyance roller arrange | positioned in the direction orthogonal to the conveyance direction of the said glass ribbon, and the glass ribbon in conveyance. It is equipped with the cutting tool which processes the dividing cutting line orthogonal to the conveyance direction of a glass ribbon on the upper surface of a glass ribbon by meanderingly moving together. The conveying roller is divided at least in the range in which the cutting tool meanders, and a running path of the backup roller in contact with the lower surface of the glass ribbon of the cutting tool is formed between the divided conveying rollers. By the traveling means, it is driven along the traveling path in the same direction and at the same speed as the cutting tool.

Description

Apparatus for split cutting line processing of glass ribbon and split cutting line processing method for glass ribbon {DEVICE AND METHOD FOR WORKING SPLITTING LINE FOR GLASS RIBBON}

The present invention relates to a split cutting line processing apparatus for glass ribbons and a split cutting line processing method for glass ribbons, which are manufactured by the float method and process splitting lines on a strip-shaped glass ribbon continuously conveyed from a slow cooling furnace. will be.

In glass plates, such as a building plate glass, an automobile plate glass, and a display plate glass, the manufacturing method of the glass ribbon by the float method using a float bath is known conventionally.

The manufacturing method of the plate glass by the float method supplies a molten glass on the molten tin surface of a float bath, and shape | molds a molten glass into continuous sheet shape on a molten tin bath, and continuously It is a manufacturing method which cut | disconnects the strip | belt-shaped glass ribbon conveyed continuously from a slow cooling furnace with the rectangular glass plate of predetermined magnitude | size by a cutting device after taking out a high temperature glass ribbon from a molten tin surface and slow cooling this by a slow cooling furnace. .

The division cutting line processing apparatus which processes the division cutting line orthogonal to the conveyance direction of a glass ribbon on the surface of a glass ribbon among the said cutting devices, conveys a glass ribbon, and arrange | positions in the direction orthogonal to the conveyance direction of a glass ribbon. The dividing cutting line is processed on the upper surface of the glass ribbon by having a plurality of conveying rollers, and pressing the upper surface of the glass ribbon being conveyed on the conveying roller and meandering relative to the glass ribbon being conveyed. A cutting tool is provided (patent document 1 below).

Japanese Patent Laid-Open No. 8-231239

In the conventional divided cutting line processing apparatus, as shown in the top view shown in FIG. 6A and the side view shown in FIG. 6B, the some conveyance roller 2 is arrange | positioned in the direction orthogonal to the conveyance direction of the glass ribbon 1, And the cutting tool 3 which presses on the upper surface of the glass ribbon 1 which is conveying on these conveyance rollers 2 is provided. When this cutting tool 3 is meandered with respect to the glass ribbon 1 which is conveying like arrow A, the divided cutting line 4 orthogonal to the conveyance direction of the glass ribbon 1 is the upper surface of the glass ribbon 1. Is processed.

However, when the cutting tool 3 travels the clearance gap 5 between each conveyance roller 2, there existed a problem that a crack generate | occur | produced in the glass of the part by the processing pressure of the cutting tool 3. Such a problem can be solved by setting the working pressure of the cutting tool 3 to a low value. However, when the cutting pressure is set to a low value, the divided cutting line 4 is not processed to a predetermined depth, so that the cutting process is performed in the subsequent bending process. There was a problem that a shape defect occurred.

In addition, such a problem is unlikely to occur because the glass ribbon itself is rigid when the thickness of the glass ribbon is thick. However, as the thickness of the glass ribbon becomes thinner, the problem occurs remarkably. It was bundled with glass which is -1.0 mm.

This invention is made | formed in view of such a situation, The division cutting line processing apparatus of the glass ribbon which can process the division cutting line stably to the glass ribbon continuously conveyed by a some conveyance roller, and the division cutting of a glass ribbon It is an object to provide a line processing method.

In order to achieve the above object, the invention of the divided cutting line processing apparatus of the glass ribbon of the present invention is a plurality of conveying rollers and conveying rollers arranged in a direction orthogonal to the conveying direction of the glass ribbon while conveying the glass ribbon. By pressing the upper surface of the glass ribbon with respect to the glass ribbon and meanderingly, the splitting line processing apparatus for the glass ribbon provided with a cutting tool for processing the divided cutting line orthogonal to the conveying direction of the glass ribbon on the upper surface of the glass ribbon. The conveying roller is divided at least in a range in which the cutting tool meanders, and a running path of a backup roller in contact with the lower surface of the glass ribbon of the cutting tool is formed between the divided conveying rollers. The backup roller travels along the traveling path in the same direction and at the same speed by the traveling means integrally with the cutting tool. And that is characterized.

In order to achieve the above object, the invention of the splitting line processing method of the glass ribbon of the present invention conveys the glass ribbon by a plurality of conveying rollers arranged in a direction orthogonal to the conveying direction of the glass ribbon, The cutting line of the glass ribbon which processes the divided cutting line orthogonal to the conveyance direction of a glass ribbon by pressing a cutting tool to the upper surface of a glass ribbon, and meandering the said cutting tool with respect to the glass ribbon conveying to the upper surface of a glass ribbon. The processing method WHEREIN: The said conveyance roller is divided | segmented at least in the range which the said cutting tool meanders, and the running path of the backup roller which contacts the lower surface of the glass ribbon of the said cutting tool is formed between each divided conveyance rollers. And the backup roller is integrated with the cutting tool in the same direction and at the same speed by the traveling means. While traveling along a path, and wherein the processing for the divided section line.

According to this invention, the some conveyance roller which conveys a glass ribbon is divided | segmented at least in the range which the said cutting tool meanders, and between each divided conveyance roller of the backup roller which contacts the lower surface of the glass ribbon of a cutting tool. Form a driveway. And a division cutting line is processed to a glass ribbon, making this backup roller run along the said traveling path in the same direction and the same speed integrally with a cutting tool by a traveling means. Thereby, since a backup roller is always located under a cutting tool, a division cutting line can be stably processed to the glass ribbon continuously conveyed by a some conveyance roller. Moreover, after processing one divisional cutting line, a cutting tool retracts upwards from the upper surface of a glass ribbon, and returns to the upper position of a cutting process starting position. And similarly, after a back-up roller processes one divisional cutting line, it retracts downward from the lower surface of a glass ribbon, and returns to the position below the cutting start position. Then, the cutting tool and the backup roller are simultaneously moved out toward the glass ribbon immediately before the start of processing.

In addition, by supporting the backup roller rotatably in the bearing portion of the traveling means, the backup roller traveling on the travel path is driven while being rotated by frictional resistance with the glass ribbon. Thereby, since the contact resistance of a glass ribbon and a backup roller is reduced, generation | occurrence | production of an abrasion resulting from a contact of a backup roller with the lower surface of a glass ribbon can be suppressed.

Moreover, according to this invention, it is preferable that the said backup roller is made of nitrile rubber. When processing a split cutting line with a cutting tool on a glass ribbon, since oil, such as cutting oil and kerosene, is used, the material of a backup roller is preferably made of nitrile rubber having excellent oil resistance.

Moreover, according to this invention, it is preferable that the said glass ribbon is 1 mm or less of plate | board thickness.

If the thickness of the glass ribbon is thick, since the glass ribbon itself is rigid, cracking due to the pressing force of the cutting tool is unlikely to occur, but in the case of a glass ribbon having a sheet thickness of 1 mm or less, the cracking tends to occur. Therefore, it is preferable to apply the division cutting line processing apparatus of this invention to the division cutting line processing apparatus for glass ribbons of 1 mm or less of plate | board thickness. It is further more preferable to apply especially to the dividing line processing apparatus of the glass for liquid crystal displays whose plate | board thickness is 0.3-0.7 mm.

According to the split cutting line processing apparatus of the glass ribbon which concerns on this invention, and the split cutting line processing method of a glass ribbon, since a split cutting line can be stably processed to the glass ribbon conveyed continuously by a some conveyance roller, Cracking and cutting shape defects can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS The structural diagram of the glass plate manufacturing installation in which the division cutting line processing apparatus of embodiment is provided.
FIG. 2 is a plan view of the divided cutting line processing device shown in FIG. 1. FIG.
3 is a perspective view of the divided cutting line processing apparatus shown in FIG.
4 is a structural diagram of traveling means of a cutting tool;
It is explanatory drawing which chamfered the edge of a roller.
5B is an AA arrow view of FIG. 5A.
It is a top view which shows the structure of the conventional division cutting line processing apparatus.
It is a side view which shows the structure of the conventional split cutting line processing apparatus.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of the dividing cut line processing apparatus of the glass ribbon and the dividing cut line processing method of a glass ribbon of this invention is demonstrated according to an accompanying drawing.

1: is sectional drawing of the glass plate manufacturing installation 12 by the float method to which the division cutting line processing apparatus 10 of the glass ribbon which concerns on this invention was applied. In addition, in the following description, a downstream side refers to the same direction side with respect to the moving direction of the glass ribbon 14 of FIG. 1 (the arrow X direction of FIG. 1), and upstream the opposite direction side. It is called side.

In the glass plate manufacturing installation 12 shown in FIG. 1, the float bath 20, the dross box 22, the slow cooling furnace 24, and the dividing cut line processing apparatus 10 are arrange | positioned toward the downstream side from the upstream side. .

In the float bath 20, the glass ribbon 14 is formed by continuously supplying molten glass to the bath surface of the molten tin 28. The glass ribbon 14 is pulled out of the molten tin 28 by the lift out roll 30 of the dross box 22, passes through the dross box 22, and is slowly cooled by the slow cooling roll 26. It is conveyed in 24 and is cooled gradually.

The glass ribbon 14 which passed the slow cooling furnace 24 is cut | disconnected in the width direction of a glass ribbon by the division cutting line processing apparatus 10 of embodiment and the bending division apparatus which are not shown in figure. A bending dividing apparatus is a well-known apparatus which adds a bending moment to the glass ribbon 14 to which the dividing cutting line was processed normally, and divides the glass ribbon 14 by bending along a dividing cutting line. In addition, before a split cutting line is processed in the width direction of the glass ribbon 14, a split cutting line is processed to the both ends of the glass ribbon 14 by the split cutting line processing apparatus which is not shown with respect to the advancing direction of a glass ribbon. Put it. It is preferable that the dividing cut line processing apparatus with respect to this advancing direction is being fixed to the position of the conveyance roller upper side. After the glass ribbon is cut in the width direction, both ends of the glass ribbon are cut by a bending dividing device (not shown).

As shown in FIGS. 2 and 3, the divided cutting line processing apparatus 10 includes a plurality of conveying rollers 32, 34, 36, 38, 40, and 42, a cutting tool 44, and a backup roller 48 to be described later. It consists of. The conveyance rollers 32-42 convey the glass ribbon 14 carried out from the slow cooling furnace 24 (refer FIG. 1), and are arrange | positioned in the direction orthogonal to the conveyance direction of the glass ribbon 14. As shown in FIG. In addition, the number of conveying rollers 32-42 is not limited. On the other hand, the cutting tool 44 is pressed against the upper surface of the glass ribbon 14 which is conveying on the conveyance rollers 32-42, and meanders with respect to the glass ribbon 14 which is conveyed by the traveling means mentioned later. Thereby, the dividing cut line 46 orthogonal to the conveyance direction of the glass ribbon 14 is processed to the upper surface of the glass ribbon 14. As the cutting tool 44, a wheel of cemented carbide or the like is used. In addition, when the conveyance speed of the glass ribbon 14 is v, the speed of the cutting tool 44 is w, and the traveling angle of the cutting tool 44 with respect to the conveyance direction of the glass ribbon 14 is (theta), this speed w By making w = v / cosθ, the dividing cut line 46 is processed in the direction orthogonal to the conveyance direction of the glass ribbon 14.

Here, the running trace of the cutting tool 44 is called A (refer FIG. 2, FIG. 3).

In a downward position along the travel trajectory A of the cutting tool 44, a travel path C for the backup roller 48 to travel on the travel trajectory B along the travel trajectory A is formed. And in order to form this running path C, the conveyance rollers 32-42 are divided into two in the axial direction. That is, the conveying roller 32 is divided into conveying rollers 32A and 32B, and similarly conveying rollers 34A and 34B, conveying rollers 36A and 36B, conveying rollers 38A and 38B, conveying rollers 40A and 40B. ) And the transfer rollers 42A and 42B. As a result, a traveling path through which the backup roller 48 passes is formed. In addition, the conveyance rollers 32-42 are rollers arrange | positioned at least in the range which the cutting tool 44 meanders.

The backup roller 48 is in contact with the lower surface of the glass ribbon 14, and receives the working pressure (the pressing force with respect to the glass ribbon 14) of the cutting tool 44 through the glass ribbon 14. As shown in FIG.

This backup roller 48 travels at the same direction and at the same speed integrally with the cutting tool 44 by the traveling means 50 shown in FIG.

The traveling means 50 of embodiment is a feed screw apparatus, and is comprised from the motor 52, the feed screw 54 connected to the output shaft of this motor 52, and the nut 58. As shown in FIG. The upper part of the nut 58 is equipped with an air cylinder 60 constituting the retraction mechanism, and the upper part of the piston 62 of the air cylinder 60 is capable of rotating the backup roller 48 by the shaft 64. A holder 66 to support is provided. In addition, the motor 52 is controlled to synchronize with the drive part of the cutting tool 44 by the control part which is not shown in figure.

Therefore, according to the traveling means 50 configured as described above, the nut 52 is driven by driving the motor 52, and the backup roller 48 is moved to the a position, which is the standby position.

In addition, the cutting tool 44 is waiting in the upper position of this backup roller 48 at this time. Then, when the cutting tool 44 is lowered toward the glass ribbon 14 and processing of the divided cutting line is started, the piston 62 is extended in synchronization with the operation, and the backup roller 48 is moved to the b position. Thereby, the backup roller 48 contacts the lower surface of the glass ribbon 14, and receives the pressing force of the cutting tool 44 which is in contact with the upper surface. Thereafter, the backup roller 48 is processed in the same direction as the cutting tool 44 and at the same speed in the state in contact with the lower surface of the glass ribbon 14 by the transfer operation by the motor 52. The position is moved to position c. Thereby, the dividing cut line 46 is processed to the glass ribbon 14 like FIG. After that, when the piston 62 is contracted and the backup roller 48 is moved to the d position withdrawn from the glass ribbon 14, the backup roller 48 is returned to the original a position by the motor 52. It is moved and waits until the next machining operation. In addition, the cutting tool 44 is similarly retracted above the glass ribbon 14 when the dividing cutting line processing is completed, and returns to a processing start position. In addition, the traveling means 50 is not limited to a conveying screw apparatus, The conveying mechanism comprised from a rack and pinion may be sufficient, and the conveying mechanism by belt drive may be sufficient.

The diameter of the conveyance rollers 32-42 is 50-300 mm, Preferably it is 150-250 mm.

Especially from a viewpoint of conveying a thin plate (0.1-0.7 mm) stably and stably cutting, a conveyance roll diameter becomes like this. Preferably it is 100-250 mm, More preferably, it is 120-180 mm. Moreover, the clearance gap between the conveyance rolls (space | interval of the outer periphery of an adjacent conveyance roll and outer periphery) becomes like this. Preferably it is 75-260 mm, More preferably, it is 80-250 mm. Further, the backup roller diameter is preferably 130 to 270 mm, more preferably 150 to 250 mm, and the backup roller width is preferably 5 to 20 mm, more preferably 5 to 10 mm.

Since oil, such as cutting oil and kerosene, is used when the split cutting line 46 is processed by the cutting tool 44 on the glass ribbon 14, the material of the backup roller 48 is preferably made of nitrile rubber having excellent oil resistance.

In addition, it is preferable that the hardness (based on JIS K 6253 (2006) durometer type A) of a roller is 50-60 degrees. If the hardness of the roller is less than 50 °, the roller is too soft, so that the roller cannot resist the pressing force of the cutting tool 44, and the glass ribbon 14 may be broken due to the pressing force of the cutting tool. . Moreover, when the hardness of a roller exceeds 60 degrees, since a roller is too hard, there exists a problem that the scratch which arises by roller contact on the lower surface of the glass ribbon 14 arises. In addition, this roller diameter may be the same size as the diameter of the conveyance rollers 32-42, and may change size.

In addition, as shown to FIG. 5A and FIG. 5B, the chamfering process a is performed in the edge part which opposes the divided conveying roller 32A, 32B (it is the same also about all the dividing rollers), and the backup roller 48 It is preferable to give chamfering b to the edge part of the roller of the roller from a viewpoint of preventing the damage by the roller edge on the lower surface of the glass ribbon 14.

As an example, after processing a split cutting line in advance at both ends of the glass ribbon which passed the slow cooling furnace, the conveyance roller which conveys this glass ribbon is divided, and the lower surface of the glass ribbon of a cutting tool between each divided conveyance rollers Forming a traveling path of the backup roller in contact with the cutting roller; and dividing the cutting line in the width direction of the glass ribbon while driving the backup roller along the traveling path in the same direction and at the same speed as the cutting tool by the traveling means. Processing. Thereafter, a bending moment is applied to the glass ribbon with a bending dividing device to cut the glass ribbon in the width direction, and then both ends of the glass ribbon are similarly cut. At the time of a split cutting line process, a split cut line is processed stably on the glass ribbon upper surface. The glass ribbon is stably cut | disconnected without the crack of the glass at the time of a split cutting line | work, and the cut shape defect at the time of a cut | disconnection.

Although this invention was detailed also demonstrated with reference to the specific embodiment, it is clear for those skilled in the art that various changes and correction can be added without deviating from the mind and range of this invention. This application is based on the JP Patent application (Japanese Patent Application No. 2008-183117) of an application on July 14, 2008, The content is taken in here as a reference.

1: glass ribbon
2: conveying roller
3: cutting tool
4: split cutting line
5: gap between rollers
10: split cutting line processing device
12: glass plate manufacturing equipment
14: glass ribbon
20: float bath
22: dross box
24: slow cooling furnace
26: slow cooling roll
28: molten tin
30: lift out roll
32 to 42: conveying roller
32A to 42A: divided conveying roller
32B to 42B: divided conveying roller
44: cutting tool
46: split cutting line
48: backup roller
50: driving means
52: motor
54: feed screw
58: nuts
60: air cylinder
62: piston
64: axis
66: holder

Claims (5)

A plurality of conveyance rollers which convey a glass ribbon and are arrange | positioned in the direction orthogonal to the conveyance direction of the said glass ribbon,
It is provided with the cutting tool which processes the splitting line orthogonal to the conveyance direction of a glass ribbon on the upper surface of a glass ribbon by pressing and moving meandering the upper surface of a glass ribbon with respect to the glass ribbon in conveyance. In the split cutting line processing device of one glass ribbon,
The conveying roller is divided at least in a range in which the cutting tool meanders, and a running path of the backup roller in contact with the lower surface of the glass ribbon of the cutting tool is formed between the divided conveying rollers,
The said back-up roller is traveling along the said running path in the same direction and the same speed integrally with the said cutting tool by a traveling means, The division cutting line processing apparatus of the glass ribbon characterized by the above-mentioned. The split cutting line processing apparatus for glass ribbon according to claim 1, wherein the backup roller is made of nitrile rubber. The said glass ribbon is conveyed by the some conveyance roller arrange | positioned in the direction orthogonal to the conveyance direction of a glass ribbon,
By pressing a cutting tool on the upper surface of the glass ribbon in conveyance and meandering the cutting tool with respect to the glass ribbon in conveyance, the glass ribbon which processes the divided cutting line orthogonal to the conveyance direction of a glass ribbon on the upper surface of a glass ribbon In the split cutting line processing method,
The conveying roller is divided at least in a range in which the cutting tool meanders, and a running path of a backup roller in contact with the lower surface of the glass ribbon of the cutting tool is formed between the divided conveying rollers,
The splitting cutting line processing method of the glass ribbon characterized by processing the said divided cutting line, running the said backup roller along the said traveling path integrally with the said cutting tool in the same direction and the same speed by a traveling means. . The method of claim 3, wherein the backup roller is made of nitrile rubber. The method for processing the divided cut line of the glass ribbon according to claim 3 or 4, wherein the glass ribbon has a sheet thickness of 1 mm or less.

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