JP2021062993A - End face processing device and method for producing glass plate - Google Patents

Abstract

To convey a glass plate stably.SOLUTION: Conveyance devices 3a,3b of an end face processing device 1 have a pair of upper and lower, first and second conveyor belts 5 and 6 that hold a glass plate G therebetween to convey it, and each have a pressing mechanism 9 that presses the first conveyor belt 5 against the glass plate G. The pressing mechanism 9 has a plurality of pressing parts 17 that press the first conveyor belt 5 against the glass plate G, and an intervening member 19 that is provided between the pressing part 17 and the first conveyor belt 5 and extend along the conveyance direction X.SELECTED DRAWING: Figure 1

Description

The present invention relates to an end face processing device for a glass plate and a method for manufacturing a glass plate by the end face processing device.

As is well known, when manufacturing a liquid crystal display, a glass plate for an organic EL display, a glass plate for furniture, a glass plate for construction, etc., a glass plate cut into a rectangular shape with a predetermined size is used. A predetermined grinding process (including polishing process) is applied to the end face. In this end face processing process, in order to improve productivity and increase the speed accordingly, for example, while transporting a glass plate by an endless band-shaped transport belt, a processing tool such as a rotary grindstone deployed on the side of the transport path is used. The end face of the glass plate is processed.

For example, Patent Document 1 includes a pair of main belts on which both edges of a glass plate in a horizontal posture can be placed, and a pair of auxiliary belts arranged above each main belt. Discloses an end face processing apparatus that conveys a glass plate while sandwiching it.

In this end face processing device, a plurality of pressing members urged downward by an elastic body such as a leaf spring are arranged above the lower portion of the pair of auxiliary belts over substantially the entire length of the lower portion. ing. The lower surface of each holding member is in contact with the inner surface of the lower portion of the auxiliary belt. As a result, each auxiliary belt travels while the lower portion is pressed against the lower glass plate by each pressing member.

JP-A-2007-51029

In the conventional end face processing device, the lower part of the auxiliary belt is pressed by a plurality of pressing members. Therefore, when there is a difference in the pressing force of the pressing member, the lower part of the auxiliary belt is large or small depending on each pressing member. There was a risk of being pressed with different pressing pressure. In this case, the glass plate conveyed by the main belt and the auxiliary belt meanders, which hinders stable transportation.

The present invention has been made in view of the above circumstances, and it is a technical subject to stably convey a glass plate.

The present invention is for solving the above-mentioned problems, and is described in an end face processing apparatus including a processing tool for processing an end face of a glass plate and a transport device for transporting the glass plate along a predetermined transport direction. The transport device includes a pair of upper and lower first transport belts and second transport belts that sandwich the glass plate, and a pressing mechanism that presses a part of the first transport belt against the glass plate. Is provided between a plurality of pressing portions for pressing the part of the first transport belt against the glass plate, and between the plurality of pressing portions and the part of the first transport belt, and in the transport direction. It is characterized by including an intervening member extending along the line.

According to such a configuration, by providing the intervening member between the plurality of pressing portions and a part of the first transport belt, the plurality of pressing portions can be received by the intervening member. Therefore, it is possible to press a part of the first transport belt by one intervening member. As a result, it is possible to prevent a part of the first transport belt from being locally pressed and evenly press the entire pressing region of the first transport belt. Therefore, meandering and breakage of the glass plate can be prevented, and stable transportation and processing of the glass plate can be realized.

The intervening member may include a recess into which the pressing portion fits. By fitting the pressing portion into the recess of the intervening member, it is possible to prevent the intervening member from being displaced during transportation of the glass plate.

The intervening member may include a resin main body portion that comes into contact with the part of the first transport belt, and a metal rib that is fixed to the main body portion.

According to such a configuration, the wear of the first transport belt can be reduced by making the main body portion in contact with a part of the first transport belt made of resin. Further, by providing the metal ribs on the main body portion, the intervening member can secure sufficient rigidity for pressing the first transport belt, and can evenly press the entire pressing region of the first transport belt.

The intervening member may be made of a metal plate. As a result, the structure of the intervening member can be simplified, sufficient rigidity for pressing the transport belt can be secured, and the entire pressing region of the first transport belt can be pressed evenly.

The method for manufacturing a glass plate according to the present invention is for solving the above-mentioned problems, and is characterized by including an end face processing step of processing the end face of the glass plate by any of the above end face processing devices.

According to such a configuration, in the end face processing step, a part of the first transport belt can be pressed only by the intervening member provided between the plurality of pressing portions and a part of the first transport belt. Therefore, it is possible to prevent a part of the first transport belt from being locally pressed and evenly press the entire pressing region of the first transport belt. Therefore, meandering and breakage of the glass plate can be prevented, and stable transportation and processing of the glass plate can be realized.

According to the present invention, the glass plate can be stably conveyed.

It is a top view of the end face processing apparatus which concerns on 1st Embodiment. It is a side view which shows the transport device of the end face processing apparatus. It is sectional drawing of the end face processing apparatus. FIG. 3 is a cross-sectional view taken along the line of the IV-IV arrow of FIG. It is a partial cross-sectional view of the end face processing apparatus which concerns on 2nd Embodiment. It is a partial cross-sectional view of the end face processing apparatus which concerns on 3rd Embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 4 show the first embodiment of the end face processing apparatus and the method for manufacturing a glass plate according to the present invention.

As shown in FIG. 1, the end face processing device 1 includes a plurality of processing tools 2 for processing the end face of the glass plate G, and transport devices 3a and 3b for transporting the glass plate G along a predetermined transport direction X. ..

In the present embodiment, the processing tool 2 is composed of a plurality of rotary tools, for example, a grindstone (grinding grindstone, polishing grindstone), but is not limited to this configuration, and may be composed of a polishing tape or other tool. The glass plate G processed by the processing tool 2 has a rectangular shape, and is conveyed in a horizontal posture by the conveying devices 3a and 3b. Each processing tool 2 is arranged on both sides of the glass plate G so as to process the end faces of the glass plate G along the transport direction X on two sides.

As shown in FIG. 1, the transport devices 3a and 3b include a first transport device 3a and a second transport device 3b arranged in parallel at predetermined intervals. A plurality of auxiliary rollers 4 for supporting the lower surface of the glass plate G are arranged at predetermined intervals between the first transfer device 3a and the second transfer device 3b.

Each of the transfer devices 3a and 3b includes a pair of upper and lower first transfer belts 5 and a second transfer belt 6, a first drive device 7 and a second drive device 8 for driving the respective transfer belts 5 and 6, and a first transfer belt. A pressing mechanism 9 for pressing a part of 5 against the glass plate G and a support mechanism 10 for supporting a part of the second transport belt 6 are provided.

Each of the transport belts 5 and 6 is formed in an endless band shape by an elastic material such as rubber. Each of the transport belts 5 and 6 has a plurality of protrusions (teeth) 5a and 6a on the inner surface. The first transport belt 5 is provided with a first transport portion 11 in contact with the glass plate G below the first transport belt 5. The second transport belt 6 is provided with a second transport portion 12 in contact with the glass plate G above the second transport belt 6. The first transport belt 5 and the second transport belt 6 transport the glass plate G along the transport direction X with the glass plate G sandwiched between the first transport section 11 and the second transport section 12.

Each of the drive devices 7 and 8 includes a drive wheel 13 and a driven wheel 14 arranged inside each of the transport belts 5 and 6. The drive wheel 13 and the driven wheel 14 are composed of pulleys having a plurality of teeth that engage with the protrusions 5a and 6a of the transport belts 5 and 6.

As shown in FIGS. 2 to 4, the pressing mechanism 9 includes a base portion 15, a plurality of link members 16 swingably supported by the base portion 15, and a plurality of pressing portions provided at one end of each link member 16. A portion 17, an urging member 18 for urging the link member 16, and an intervening member 19 arranged between the pressing portion 17 and the first transport portion 11 of the first transport belt 5 are provided.

The base 15 is located inside the first transport belt 5 and supports the link member 16 and the urging member 18. As shown in FIG. 3, the base portion 15 includes a first support portion 20 that swingably supports the link member 16 and a second support portion 21 that supports the end portion of the urging member 18. The first support portion 20 is a shaft portion that supports an intermediate portion of the link member 16. The second support portion 21 is a protrusion that locks one end of the urging member 18.

The link member 16 is made of metal and has a long plate shape or a rod shape. The link member 16 includes a first end portion 16a connected to the pressing portion 17 and a second end portion 16b connected to the urging member 18. The first end portion 16a is connected to the pressing portion 17 via the connecting shaft 22. The second end portion 16b includes a locking portion 23 that locks a part of the urging member 18.

The plurality of pressing portions 17 are made of stainless steel or other metal, and have a plate shape or a block shape. The pressing portion 17 has a contact surface 17a that comes into contact with the intervening member 19.

The urging member 18 is composed of a coil spring, but is not limited to this configuration, and may be composed of a leaf spring, a fluid cylinder device, or other actuator. The coil spring as the urging member 18 is composed of a tension spring. One end of the urging member 18 is connected to the second support 21 of the base 15. The other end of the urging member 18 is connected to the locking portion 23 of the link member 16.

The intervening member 19 is a long plate member or bar member which is made of nylon (registered trademark) or other resin, or stainless steel or other metal, and extends along the transport direction X. The length dimension L1 (length dimension along the transport direction X) of the intervening member 19 is larger than the length dimension L2 of the glass plate G in the transport direction X, and the first transport belt 5 (first transport) in the transport direction X. It is smaller than the length dimension L3 of the part 11) (see FIG. 2).

The intervening member 19 has a first surface 19a that contacts the first transport portion 11 of the first transport belt 5 and a second surface 19b that contacts the pressing portion 17 of the pressing mechanism 9. The first surface 19a is arranged so as to face downward and comes into contact with the protrusion 5a of the first transport belt 5. The second surface 19b is arranged so as to face upward. All the pressing portions 17 are in contact with the second surface 19b.

Of the plurality of pressing portions 17 shown in FIG. 2, some pressing portions 17A are locked in the recess 24 of the second surface 19b as shown in FIGS. 3 and 4. The recess 24 has a side surface 24a that contacts the side portion of the pressing portion 17A and a bottom surface 24b that contacts the contact surface 17a of the pressing portion 17A.

As shown in FIG. 4, a through hole 25 is formed on the side surface 24a of the recess 24 along the width direction of the intervening member 19 (the direction orthogonal to the longitudinal direction of the intervening member 19). A fixture 26 for fixing the pressing portion 17A to the recess 24 is inserted into the through hole 25. The fixture 26 is composed of a screw member such as a bolt.

The pressing portion 17A fixed to the recess 24 is formed with a screw hole 27 into which the shaft portion of the fixture 26 is fitted. The pressing portion 17A is fitted in the recess 24 so that the screw hole 27 coincides with the through hole 25 of the intervening member 19. The pressing portion 17A is fixed to the recess 24 by screwing the shaft portion of the fixture 26 into the screw hole 27 through the through hole 25. The pressing portions 17B and 17C shown in FIG. 2 are also locked and fixed in the recess 24 in the same manner as the pressing portion 17A.

The support mechanism 10 includes a base 28 and a support 29 that supports the second transport portion 12 of the second transport belt 6. The base portion 28 is arranged inside the second transport belt 6, and supports the support portion 29 at the upper portion thereof. The support portion 29 is a long plate-shaped member or rod-shaped member made of resin or metal. The support portion 29 has a support surface 29a that the protrusion 6a of the second transport belt 6 comes into contact with so as to slide.

Hereinafter, a method of manufacturing the glass plate G using the end face processing apparatus 1 having the above configuration will be described. This method includes an end face processing step of processing the end face of the glass plate G by the end face processing device 1. If necessary, as a pre-process of the end face processing step, a cutting step of cutting out the glass plate G by cutting the glass original plate is provided. Further, if necessary, as a post-process of the end face processing step, a cleaning step of cleaning the glass plate G that has undergone the end face processing step, an inspection step of inspecting the glass plate G that has undergone the cleaning step, and a glass plate G that has undergone the inspection step A packing process for packing may be provided.

In the end face processing step, the end face processing device 1 processes the end face of the glass plate G by the processing tool 2 (grinding and / or) while transporting the glass plate G along the transport direction X by the respective transport devices 3a and 3b. Polishing).

In the end face processing step, each of the transport devices 3a and 3b exerts a force for pressing the intervening member 19 on the pressing portion 17 via the link member 16 by the elastic force (tensile force) of the urging member 18 in the pressing mechanism 9. I'm letting you.

In the end face processing step, the first transport portion 11 of the first transport belt 5 is driven in the transport direction while sliding with respect to the first surface 19 a of the intervening member 19 by the rotational drive of the drive wheels 13 in the first drive device 7. Move along X. Further, the second transport portion 12 of the second transport belt 6 moves along the transport direction X while sliding with respect to the support surface 29a of the support portion 29 by the rotational drive of the drive wheels 13 in the second drive device 8. To do.

The intervening member 19 presses the first conveying portion 11 of the first conveying belt 5 against the glass plate G by the pressing force of the pressing portion 17. Further, the glass plate G is supported by the support surface 29a of the support portion 29 via the second transport portion 12 of the second transport belt 6. As a result, the first transport unit 11 transports the glass plate G together with the second transport unit 12 in a state of sandwiching the glass plate G at a constant pressure.

According to the method for manufacturing the end face processing apparatus 1 and the glass plate G according to the present invention described above, in the end face processing step, the end face processing apparatus 1 is provided between the plurality of pressing portions 17 and the first transport portion 11 of the first transport belt 5. By pressing the first transport portion 11 with only one intervening member 19, it is possible to prevent the first transport portion 11 from being locally pressed, and the entire pressing region of the first transport belt 5 can be pressed evenly. Therefore, it is possible to prevent meandering and breakage of the glass plate G to be conveyed, and it is possible to realize stable transportation and processing of the glass plate G.

FIG. 5 shows a second embodiment of the end face processing apparatus according to the present invention. In the present embodiment, the configuration of the pressing mechanism 9 is different from that of the first embodiment. In the present embodiment, the intervening member 19 of the pressing mechanism 9 has a through hole 25 formed in the vertical direction on the bottom surface 24b of the recess 24. A screw hole 27 is formed on the contact surface 17a of the pressing portions 17A to 17C.

In the pressing mechanism 9 according to the present embodiment, in a state where the pressing portions 17A to 17C are fitted into the recess 24, the through hole 25 of the recess 24 and the screw hole 27 are matched with each other, and the fixture 26 is passed through the through hole 25. The intervening member 19 and the pressing portions 17A to 17C are connected by screwing the shaft portion of the above into the screw hole 27.

Other configurations in the end face processing apparatus 1 are the same as those in the first embodiment. The components common to the present embodiment and the first embodiment are designated by the same reference numerals as those of the first embodiment.

FIG. 6 shows a third embodiment of the end face processing apparatus according to the present invention. In the present embodiment, the configuration of the pressing mechanism 9 is different from that of the first embodiment. The intervening member 19 of the pressing mechanism 9 includes a long main body portion 30 and ribs 31 that reinforce the main body portion 30.

The main body 30 is made of nylon (registered trademark) or other resin in a plate shape or a rod shape. The main body portion 30 includes a first surface 30a that contacts the protrusion 5a of the first transport belt 5, a second surface 30b that contacts the pressing portion 17 of the pressing mechanism 9, and a side surface 30c to which the rib 31 is fixed. Has.

The rib 31 is made of stainless steel or other metal and has a plate shape or a rod shape. The rib 31 is fixed to the main body 30 by a fixture 32 such as a bolt. A screw hole 33 into which the shaft portion of the fixture 32 is screwed is formed on the side surface 30c of the main body portion 30. The rib 31 is formed with a hole 31a through which the shaft portion of the fixture 32 is inserted. The rib 31 is fixed to the side surface 30c of the main body 30 by matching the screw hole 33 of the main body 30 with the hole 31a of the rib 31 and screwing the shaft portion of the fixture 32 into the screw hole 33 through the hole 31a. Has been done.

As shown in FIG. 6, the lower end portion of the rib 31 may protrude below the first surface 30a of the main body portion 30. The rib 31 is not in contact with the protrusion 5a of the first transport belt 5 and the glass plate G, and there is a gap between the rib 31 and the protrusion 5a and between the rib 31 and the glass plate G. Is formed.

In the end face processing step, when the position of the first transport belt 5 is displaced in the width direction, the lower portion of the rib 31 may come into contact with the side surface of the protrusion 5a on the first transport belt 5. In this way, the rib 31 may function as a position regulating portion for preventing the misalignment of the first transport belt 5 in the end face processing step.

Other configurations in the end face processing apparatus 1 are the same as those in the first embodiment. The components common to the present embodiment and the first embodiment are designated by the same reference numerals as those of the first embodiment.

The present invention is not limited to the configuration of the above embodiment, and is not limited to the above-mentioned action and effect. The present invention can be modified in various ways without departing from the gist of the present invention.

In the above embodiment, the pressing mechanism 9 in which some of the pressing portions 17A to 17C are fixed to the recesses 24 of the intervening member 19 among the plurality of pressing portions 17 has been exemplified, but the present invention is limited to this configuration. It's not something. For example, all the pressing portions 17 may be fixed to the recesses 24 of the intervening member 19. Further, a recess is formed in the pressing portion 17, a protrusion is formed on the second surface 19b of the intervening member 19, and the recess and the protrusion are fitted to fix the pressing portion 17 to the intervening member 19. May be good. Further, the pressing mechanism 9 can adopt a configuration in which the pressing portions 17A to 17C are simply fitted into the recess 24 without being fixed by the fixture 26.

1 End face processing device 2 Processing tool 3a 1st transfer device 3b 2nd transfer device 5 1st transfer belt 6 2nd transfer belt 9 Pressing mechanism 17 Pressing part 17A Pressing part 17B Pressing part 17C Pressing part 19 Intervening member 24 Recession 30 Main body part 31 Rib G Glass plate X Transport direction

Claims (5)

In an end face processing device including a processing tool for processing the end face of a glass plate and a transport device for transporting the glass plate along a predetermined transport direction.
The transfer device includes a pair of upper and lower first transfer belts and second transfer belts that transfer across the glass plate, and a pressing mechanism that presses a part of the first transfer belt against the glass plate.
The pressing mechanism is provided between a plurality of pressing portions that press the part of the first transport belt against the glass plate, and between the plurality of pressing portions and the part of the first transport belt, and the above-mentioned. An end face processing apparatus including an intervening member extending along a transport direction. The end face processing device according to claim 1, wherein the intervening member includes a recess into which the pressing portion fits. The end face processing apparatus according to claim 1 or 2, wherein the intervening member includes a resin main body portion in contact with the part of the first transport belt and a metal rib fixed to the main body portion. The end face processing apparatus according to claim 1 or 2, wherein the intervening member is made of a metal plate. A method for manufacturing a glass plate, which comprises an end face processing step of processing the end face of the glass plate by the end face processing apparatus according to any one of claims 1 to 4.

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